I N I S - m f — 1 1 2 6 8Government of India

Bhabha Atomic Research Centre

ANNUAL REPORT1986-87

December 1987

GOVERNMENT OF INDIA

BHABHA ATOMIC RESEARCH CENTRE

ANNUAL REPORT 1986-87

BARCANNUAL REPORT

1986-87

PREFACE

The research and development activities at BARC cover a wide range, primarily because it involveswork in the entire nuclear fuel cycle. In addition, production and utilisation of radioisotopes, safety andhealth research occupy a major part of our activities.

Basic research in several disciplines has contributed to our success in the applied fields, andcontinues to play the role of a stimulant. This can be seen from the characteristics of this report.

The detailed reporting of work is done through publications in scientific journals. This is necessarysince interaction with the international community is vital for working at the cutting edge of modernscience. This report attempts to give only a brief account of the work at this Centre to provide an overview.For those who may have further interest in any specific field, there is a list of publications relevant to thetopics covered in this report.

It is hoped that this report will be useful to other individuals and organisations to identify areas inwhich we may be able to help or collaborate in the years to come.

P. K. lyengarDirector

CONTENTS

1. PHYSICAL SCIENCES 11 • 1 Nuclear Physics 11 -2 Accelerator Programme *1 -3 Reactor Physics 11 -4 Fusion Related Research 21-5 Condensed Matter Physics 21 -6 Theoretical Physics 31 -7 Lasers and Spectroscopy 418 Computers 51 9 Seismology 5110 Nr.clear Research Laboratory, Srinagar and High Altitude Research Laboratory. Gulmarg 51-11 Variable Energy Cyclotron Centre, Calcutta 6112 Plasma Physics 71 13 MHD Generation 71 14 Pulse Power and Pratical Beam Technology 7115 Electron Beam Technology 9

Publications 102. CHEMICAL SCIENCES 21

2 1 Basic Chemistry 212 2 Water Chemistry 212 3 Fuel Chemistry 222 4 Radiochemistry 232-5 Analytical Chemistry 23

Publications 253. MATERIALS & MATERIALS SCIENCE 35

3 1 Materials 353-2 Materials Science 363 3 Process Technology 37

Publications 384. LIFE SCIENCES 41

4 1 Molecular Biology 414 2 Biochemistry 414 3 Bio Organic Chemistry 424-4 Nuclear Agriculture 434-5 Pest Control 434 6 Food Technology 434 7 Radiation Medicine 45

Publications 475. RADIOISOTOPES 56

5 1 Radioisotope Production 565 2 Radiochemicals 565 3 Radiopharmaceuticals 565 4 Tritium. Carbon-14 and Phosphorus-32 Labelled Compounds 565 5 Radiation Sources 565 6 Radioisotope Applications 57

Publications 59

6. REACTORS 606 1 Dhruva Reactor 606-2 Reactor Engineering 606-3 Reactor Analysis ' 626-4 Experimental Reactor Physics 626-5 Reactor Control 626-6 Reactor Operations, Services & Maintenance 64

Publications 657. FUEL CYCLE 68

7 1 Ore Dressing 687 2 Uranium Metal Production 687-3 Uranium Fuel Fabrication 687-4 Plutonium Fuel Fabrication 697-5 Fuel Reprocessing 707-6 Radioactive Waste Management 70

Publications 728. HEALTH AND SAFETY 76

8 1 Health Physics 768 2 Radiological Protection 76

Publications 789. ELECTRONICS AND INSTRUMENTATION 86

9 1 Electronics 869-2 Instrumentation 869-3 Computer Based Instrumentation 879-4 Process Instrumentation 87

Publications 8910. ENGINEERING AND GENERAL SERVICES 90

101 Civil Engineering 9010-2 Electrical & Mechanical Services 9010-3 Central Workshops 9010-4 Remote Handling and Robotics 9110-5 Technical Information 9110-6 Translation 9210-7 Landscaping 9210-8 Contributory Health Service Scheme 9210-9 Radiation Medicine Service 92

Publications 94

11. TECHNOLOGY TRANSFER 95

12. HUMAN RESOURCES DEVELOPMENT 96)

13. CENTRE FOR ADVANCED TECHNOLOGY, INDORE 97

1. PHYSICAL SCIENCES

BARCANNUAL REPORT

1986-87

1 • 1 Nuclear Physics

Charged particle beams from the 5-5 MV Van deGraaf accelerator, 2 MV Tandem accelerator and theVariable Energy Cyclotron were used to carry out anumber of new investigations in the areas of basicNuclear Physics, Atomic Physics and other disciplines.

Proton induced fission of 235U and 238U was studiedat extreme sub-Coulomb barrier energies (1 MeV < E< 4 MeV) for the first time. An anomolously largefission cross section was measured indicating thepossible presence of a shallow pocket in the deforma-tion potential energy at large deformations. Fissionfollowing inelastic scattering of 60 MeV alpha particleson 238U, elastic, inelastic and continuum scattering of50 MeV alpha particles on 209Bi, and 6Li breakup by45 MeV alpha particles are some of the investigationscarried out using the Variable Energy Cyclotron inCalcutta. From the excitation function measurementson the {•/, I2C) and (y., -/) reactions definite evidencehas been found for the existence of intermediatestructure resonances at high excitation energies in thecompound nucleus 2aSi. As a part of the BARC-IndianaUniversity (USA) collaboration, the giant resonanceregion excited in 90Zr and 208Pb through the inelasticscattering of 270 MeV 3He particles from the IndianaUniversity Cyclotron Facility were measured and thedata have been analysed to extract the sum rulestrengths for the various multipoles present.

Several new detector systems for experimentswith the Pelletron accelerator, now being installed inTIFR. Bombay, have been designed and taken up forfabrication. These include a deep ionisation chamberwith two dimensional position sensitivity and a splitanode for particle identification and a gamma ray sum-energy cum multiplicity spectrometer with 20 BismuthGermanate detector elements Making use of the massseparator in Trombay and a retarding beam technique,a slow ion facility has been set up to make directdeposits of enriched isotopes on thin carbon backingsof 10 to 100 gm/cm2 suitable for use as targets inaccelerator experiments. The proton induced x-ray

fluorescence spectrometer installed in the Van deGraaf beam line was used for a number of analyticalapplications. Oxygen ions from the 2 MV Tandemaccelerator have been used to study excitation functionsof transitions in Oil, 0III and 01V in the wavelengthregion 2000 A - 5000 A using the beam foil spectro-scopic technique. Mean radiative life times for cascadingtransitions in 0IV and other transitions in On have alsobeen measured

1 -2 Accelerator Programme

The installation of the 14 UD Pelletron acceleratorat the TIFR Campus is in the final phase. The civil,electrical and air conditioning work in the Pelletronbuilding has been completed. The accelerator beamtransport system has been installed. Its vacuum testingis in progress. The assembly of the user beam lines isunderway. The main electrical and electronic wiringfrom the accelerator, the wiring of remote controls forvarious magnet supplies and the installation of varioussafety monitoring and interlock systems are in pro-gress.

Fabrication of a RF resonator as an elcin«##ef thesuperconducting linac booster to the Pelletron accele-rator has now been undertaken after initial electronbeam welding trials and satisfactory formation ofcopper-copper welds. Facilities for lead coating andRF testing are being set up.

Design work on the cyclotron facility for theproduction of short-lived radio-isotopes to be used innuclear medicine is nearly completed. The acceleratoris designed to deliver 30 MeV proton beams havingmaximum internal and external beam currents of 100 nA and 50 /< A respectively. Beams of alpha particlesand deuterons of appropriate energies will also beavailable. The detailed plans for the building and theservices are underway.

1 -3 Reactor Physics

The nuclear design of the NAPP, to be commissionedshortly, was extensively reanalysed to prepare thePhysics Design Manual. In this connection, initial and

BARC• \ \ \ l \1 KKPOKI

1986-87

equilibrium core loadings, core reactivity coefficients,worths of various reactivity devices in diferent reactorstates and xenon transients were recalculated. TheLoss of Regulation Accident (LORA) was analysedboth for primary and secondary shut-down systemsseparately. For this analysis various reactivity inser-tion rates and different initial powers were assumed. Itwas shown that the two shutdown systems couldindependently shutdown the reactor in a satisfactorymanner.

For the 500 MWe PHWR, being designed, bankwiseworths of adjuster rod system were estimated fordifferent banking schemes. The rate of change ofreactivity with change in the levels of zone controlcompartments was calnilated. Also the startup of thereactor after a short shutdown for about half an hourwas simulated. Certain two-phase aspects of the dis-assembly regime of hypothetical core disruptive acci-dents in fast reactors were studied both analyticallyand numerically.

PURNIMA EXPERIMENTS : The U-233 fuelledPURMMAII reactor experiments were completed andthe reactor system was dismantled to make way forPURNIMA III critical experiments. PURNIMA III is a fullscale zero power mock up of the U-233 fuelledKAMINI reactor with 30 kW power under constructionat IGCAR, Kalpakkam.

KAMINI REACTOR : The four meire high stainlesssteel tank for housing the core-reflector assembly ofthe 30 kW KAMINI reactor was erected in position inthe basement vault at the Radiometallurgy Laboratoriesof IGCAR. Kalpakkam. Erection of the top structure hasalso been completed. Piping work for water system isin progress and biological shield installation has comm-enced Nuclear instrumentation channels are readyand the safety control devices are being assembledfor final tests. Control panel fabrication and wiring areunderway. Commissioning trials of various systemswould commence shortly.

1 -4 Fusion Related Research

For the high power glass laser under development

of the laser fusion project, five amplifiers, three opticalrelays, one Faraday Isolator and one pulse sheer havebeen commissioned. A two zone furnace for makingglass microballoons has been commissioned Glassmicroballoons of diameter between 50-250 micronsand wall thickness of 5-10 microns have been made inthe furnace. The one dimensional laser fusion computercode MEDUSA was updated to handle mutli-layeredshell targets. Analytical models were developed forthe analysis of Rayleigh-Taylor instability in solid orshell targets The formalism covers both planar andcurved geometry targets. Analytical profiles for thefree expanding plasma in vacuum were derived

An extension of the Fluid Theoretical Formulationhas predicted the new result that a perfectly symmetricplasma can generate a magnetic field spontaneously(using the ambient magnetic field for the breaking ofthe symmetry). Based on this theory a model ofZ-pinch experiments successfully explains some ofthe experimentally observed singular features in thecurrent waveform.

The prototype capacitors for the 500 kJ capacitorbank under construction at Trombay have been testedfor their full life and jitter tests are in progress Spe-ctroscopic plasma diagnostics measurements havebeen started on the poorly understood formationphase of "plasma focus" and "electric gun" devices.

1 -5 Condensed Matter Physics

Neutron diffraction and scattering activities werecontinued during the current year on dual fronts, vizinstrument development for Dhruva and experimentsat CIRUS. Prominent features in the former categoryinclude design and fabrication of several new techno-logically advanced components for neutron spectro-scopy. such as neutron guides, curved monochroma-tors linear position sensitive detectors, etc. On theexperimental side, diffraction experiments on a numberof mixed ferntes and alloys were carried out to under-stand their magnetic behaviour Magnetic quasi-elasticscattering experiments from the mixed-valence com-

BARCANM \\. REPORI

1986-87

pound UCu5 were also carried out at Institute LaueLangevin (France) in a collaborative experiment toelucidate the nature of the phase transition around 1K. Under the BARC-Rutherford Appleton Laboratory(UK) agreement, inelastic neutron scatteringmeasurements were performed leading to new resultsconcerning the higher rotational excited states ofNH',, in ammonium chloride, correlation splitting oflibrational modes of water in Ba (ClOJ/R.O andmolecular vibrations in glycine. Experiments relatingto variation of phonon width with temperature in anarrow gap semiconductor/ semimetal HgTe wereperformed using Raman Scattering technique.

The high pressure diamond cell based energydispersive x-ray diffraction set up has been commi-ssioned. The electrical resistance measurements ofheavy Fermion UPt3 at room temperature do not showany anomalies. The design of a gas gun for launchingprojectiles at velocities up to 12 km/sec, for shockwave studies, has been completed. The tranformationmechanism of high pressure body-centred tetragonalto hexagonal-close-packed phase change in mercurycadmium alloys has been interpreted in terms of aphonon mode softening. Valence 2 to 3 change hasbeen identified as the principle cause of shock anomalyin europium. Calorimetric and electron diffractionstudies were carried out to investigate the quasicry-stalline-to-crystalline phase transition in the Al6CuMgv Atheoretical basis was developed for labelling the obser-ved diffraction peaks in quasi-crystals. Investigationsinto various aspects of lattice dynamics, like dispersionrelations, thermal expansion, bulk modulus, anhormo-nicity etc. were undertaken through theoretical meansand/or using the technique of computer simulation onCRF,CIi.TlN0J.NH4Br.Mg,Si0v LiKSO, etc.

In continuation with earlier studies on interactionof the antileprosy drug DDS. with membranes, furtherNMR and calorimetric studies with micellar and modelmembranes have indicated that the drug resides at themembrane interface and interacts with the component phospholipid headgroups. X-ray diffraction studiesrevealed large bare coherence lengths in cybotactic

nematic liquid crystals in the vicinity of nematic tosmectic phase transition Frequency dependent specificheat measurements were performed on some polymersto elucidate their glass transition

The protein crystallography group Is engaged mthe studies related to understanding of the structureand function of biological macromolecules and theirinteraction with drugs. Analysis of the x-ray diffractiondata of crystals of human carbonic anhydrase comple-xed with powerful sulphonamide drugs have giveninsight into the mode of binding of some of these drugswith the receptor protein and the mechanism of enzymeinhibition by the drug. The refinement of the structureof native triclinic hen egg white lysozyme reported lastyear has been completed for the 2A' resolution x-raydiffraction data with one of the most accurate reportedenzyme structures.

Low temperature studies on superconductingNbTi wires, manufactured within the Centre, haveshown that "sausaging" in the filaments in the Cu-matrix is an important factor in affecting the perfor-mance of these wires

1 -6 Theoretical Physics

In Nuclear Physics, theoretical investigations rela-ting to phase transitions in nuclear matter, have shownthat the (p.pV ) reaction might exhibit pronouncedsignals for the precursors to the pion condensation inatomic nuclei The nuclear phase space model descri-bing pion production in nuclear collisions was furtherimproved to satisfactorily explain the most recent datanear the absolute thresholds. Direct experimental evide-nce for the occurence of "pre-equilibrium" fission, anew decay mode of composite systems formed inheavy ion reactions, was demonstrated by a study ofthe entrance channel dependence of fission fragmentanisotropies

In the area of Quantum Optics, the theoreticalstudies were centered around the behavious of atomsin a cavity, cooperative resonance fluorescence andoptical double resonance Squeezing and other quan-

4NNLAL REPORT1986-87

turn features of the sideband spectrum in coopera-tive resonance fluorescence were investigated. Theeffects of detuning and fluctuations in driving fields onoptical double resonance were analysed. A study ofan interesting phenomenon of intermittent fluores neeassociated with the quantum jump between the .ivelsin a three level system was carried out.

A variety of statistical phenomena are modelledusing stochastic differential equations. The noise termsin these models represent the influence of the rapidlyvarying degrees of freedom on the slowly varyingmacroscopic parameters of the system. Work done inthis area showed that the non-white spectrum of thenoise has a decelerating influence on the relaxation ofan unstable system. A recently proposed stochasticmodel for symmetry breaking in molecular synthesiswas also studied.

The versatile path integral method was used toobtain exact expressions for the two point distribu-tion function and end-to-end probability function, for apolymer chain involving harmonic interactions amongstall molecular units. Path integral technique was alsoapplied to study the nature of electronic spectrum in apositionally disordered system. Steiner symmetrizationof the potential for a particle in quantum mechanicswas shown to lead to a lower bound on the groundstate energy.

1 -7 Lasers and Spectroscopy

A tunable dye laser pumped by copper vapourlaser (CVL) finds many applications in spectroscopyand photochemistry Both the CVL and dye lasershave been developed in BARC. A technique to stabilizethe wavelength of the dye laser using a temperaturecontrolled Fabry Perot interferometer has been deve-loped.

A compact and portable optical data link forlinking a main frame computer to remote terminals hasbeen developed The data link uses infrared semiconductor lasers and can carry data over distances ofupto 1 km at the rate of 10 K bits per sec.

As a part of an effort to provide analytical servicesto the various units of DAE nearly one thousandsamples involving 8700 determinations were analysedby using Optical Emission Sp'ectroscopic and x-rayfluorescence techniques. Programmes in basic andapplied research on problems of relevance to therequirements of various DAE projects are also beingpursued. The studies carried out in the area of atomicspectroscopy include the evaluation of the variation ofnuclear mean square charge radii for all the evenmass number stabie isotopes of Erbium The infraredspectra of several ion exchange resins have beenobtained in order to correlate the cross linking withinfrared spectral features, it is observed that thedegree of cross-linking for any resin could be obtainedby the intensity ratios of the bands in the 800 -1000 cm ' region With a view to studying the molecularions generated in high voltage discharges as well asexcited states of simple molecular species, an optogal-vanic cell has been constructed and the optogalvanicsignals in low pressure NH3 discharges have beenmeasured at several wavelengths of a line-tunable CO2

laser. The electronic spectrum of the hydrogen iso-cyanide molecule (HNC), has been obtained for thefirst time in the flash photolysis of certain heterocyclicazoles. The photodissociation of the alkali dimersNaRb and NaCs molecules have been studied forvarious lines of the argon ion laser and it has beenfound that the cross-section for the photodissociationshows a resonance character around 4727 A" forNaRb while for the NaCs molecule such a resonancecharacter was not found. A one meter monochiomatorand the signal detection and processing systems re-quired for the Inductively Coupled Plasma Spectro-meter have also been designed and fabricated

Extensive single colour and two colour ionizationexperiments in uranium vapour with a tunable dyelaser, have been used for identifying a number of newhigh lying levels of uranium above 32.000 cm :. Inmany cases J assignments of the new levels could bedecided unambiguously. Instabilities and chaos havebeen investigated in a continuous wave (cw)COi laseroperating in a single or in two axial modes Investi-

BARCANNl M. KKPOR'I

1986-87

gations on the multiphoton excitation and dissociationof CDF3 have been continued. In-situ experiments,involving monitoring of IR fluorescence, have beencarried out to determine the isotope selectivity in themultiphoton dissociation of a 1:1 mixture of CDF3 andCHF3 using a TEA C02 laser. Real time characterizationof the CFj radical was monitored by optical absorptionat 249 nm. IR fluorescence studies on SFC and CF2C1,were also continued.

1-8 Computers

The computer network providing data processingservices to BARC scientists is functioning satisfacto-rily on round-the-clock basis. To enable a super-minicomputer system to act as a Remote-Job-Entry-Stationfor large computers, the necessary emulating soft-ware and synchronous modems have been developed.With the augmentation of the computer system, severalnew software and hardware projects have been under-taken to optimally use the increased computationalcapabilities. The following software projects havebeen started, (i) A 3D solid modelling package forstructural analysis applications, (ii) Materials-Mana-gement-Software for all consumables procured byBARC. Controlled-redundancy, preservation of database integrity and user oriented approach are some ofthe salient features of this system, (iii) A query systemthat supports floating point data types in Data BaseManagement Systems for use particularly with scienti-fic data bases.

BARC is participating in the experimental Packet-Switched Data Network (PSDN) being operated byDepartment of Telecommunications. Three stationshave been allotted to BARC, one station connected toeach of the three nodes at Delhi, Bombay and Madrasover leased lines at a speed of 1200 bits/sec. With thisset-up, the stations at Delhi and Madras would be ableto get linked to the computers in BARC.

A micro computer based statistical multiplexer formultiplexing four terminals on a single communicationline has been fully developed and is undergoing fieldtest

Development ol an advanced PC based Multi-channel Analyser system has been completed Theproduction of this unit would be carried at ECIL

1-9 Seismology

Continuous monitoring of globai seismicity wasearned out at the Gauribidanur Seismic Array and allseismic signals suspected to be due to undergroundnuclear explosions were analysed promptly to esti-mate their location and yield. Studies in source discri-mination based on spectral energy in the direct andcore reflected phases were continued to improve theconfidence in identifying seismic sources with encou-raging results. Local seismicity in Deccan plateau wasexamined as recorded at Gauribidanur with particularreference to a selected region around Kaiga. Technicalassistance was given to Kamataka Power Corporationto improve the seismic stations operated by them

An indigenously fabricated seismometer was insta-lled at RAPP and it has started giving very useful dataon seismic signals of local as well as teleseismicorigin.

The micro rockburst monitoring facility installedat the Kolar Gold fields as a joint BARC-BGML colla-borative project was in continuous operation andenabled the mining staff to locate accurately the activeregions in the area. The system has also providedvaluable data regarding the anisotropy and heter-ogeneity in the region.

1-10 Nuclear Research Laboratory, Srinagar andHigh Altitude Research Laboratory,Gulmarg

The Gulmarg Gamma-ray Telescope has beenfurther augmented to make a bank of three mirrors. Asky-patrol channel which monitors the sky transparencyconditions has also been added. A detailed feasibilitystudy is underway to better exploit the atmosphericCerenkov technique for gamma-ray astronomy workby the use of narrow-band optical filters (pass band <10 nm) and extending observations into the ultraviolet

BARCANM M RLPOKI

1986-87

region f300 i 10 nm ) The telescope was used totrack several cosmic sources including Cygnus X 3Geminga and the Crab pulset/nebular region Observations on Crab pulsar/nebular region are being madein time coincidence with similar observations by TIFRat Pachmarhi to study possible TeV ; -ray bursts fromthis region

The analysis of gamma ray data obtained fromSAS-II and COS-B satellites was undertaken and it wasshown that Loop I supernova remnant (age -4xlOr'years, distance -130 parsec) may be a source ofcosmic rays Gama-ray emissions in the Galaxy as awhole are shown to correlate with the known spatialdistribution of the supernova remnants, lending additior.al support to the origin of cosmic rays in supernova remnants The variation in the surface density ofmolecular hydrogen with Galocentric distance hasbeen computed and found to be significantly smallerthan that derived by radio astronomers This hasimportant implications on the origin of cosmic raysand the stability of the Oort Cometary cloud

The experiment on the detection of neutrons pro-duced in lightning discharges has been continued Arare bali lightning event was observed near the dete-ctor site at the same time when the system recordedtwentyone neutrons during 320 microseconds

A study of bone samples from the Shivaliks wasundertaken using the energy dispeision x-ray techni-que for correlating uranium concentration in boneswith various trace elements found in these samplesAs part of an R & D environmental programme anatmospheric ozone monitor with a sensitivity of - 0 1to 99 9 ppb and an atmospheric hydrogen peroxidesampier-cum-analyzer with a similar sensitivity havebeen fabricated At RAPS. Kota Unit 2. an on-line NOremoval tesi system has been successfully operatedfor purification of Calandria Vault air Work wascontinued on the radiation chemistry of tetracycline tounderstand the mechanism by which it degrades inaqueous solutions

In continued efforts to popularize the method of

Radiation Sterilization, various medical products fromthe institute of Medical Sciences. Snnagar. were steri-lized by ; radiation and supplied to different hospitalsThe irradiation facility was aiso provided 10 the S KUniversity of Agricultural Sciences & TechnologySrinagar

111 Variable Energy Cyclotron Centre. Calcutta(VECC)

The Variable Energy Cyclotron at Calcutta main-tained the schedule of ihree weeks round-the-clockoperation for utilisation followed by one week o;maintenance and development A fast acting gatevalve has been installed a! the exit beam line of thecyclotron, which enables isolation of the machinemain vacuum system from the beam transport systemin the event oi accidental air admittance at the usersend in the experimental cave area One 3000 l.'mtuibomoiecular pump was installed at the exit area oithe dee chamber in place oi the 30 cm oil diffusionpump for providing bettei oil free pumping oi theaccelerating chamber The large gasket between theresonatoi tank and the dee tank needed replacementwhich involved shifting the heavy resonatci tankaway from the magnet assembly and ialei leasse-mbiing the same

In the field of research. VECC has enjoyed laigescale participator, from more than 25 different researchinstitutions and universities throughout the countryExperiments covering almost all the aspects of currentinterest, especially in the field of nuclear science suchas elastic and inelastic scattering, resonance behaviourin heavy ion systems, one and two nucleon iransfoireactions fission dynamics and break-up and frag-mentation reactions, have been carried out

In the field of applied research VEC has been usedfor production of radiojsotopes for medical purposesand for Mossbauer studies, for radiation damagestudies m materials for developing techniques for theestimation of trace amount of oxygen in low Z-elementsand for .studying wear of moving machine parts

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1986-87

• A very useful aid to all the research activities hascome through the development of a sophisticatedCAMAC based on-line data acquisition system usingND-560 computer. This has already been used exten-sively by several research groups from various partsof the country.

1-12 Plasma Physics

Bhabha Atomic Research Centre has been engagedin the study of physics and technology of thermalplasmas in the temperature range 2000 - 20,000 K atatmospheric pressure. Several computer codes havebeen developed for the calculation of thermodynamicand transport properties and dynamics of thermalplasmas with and without the presence of condensedspecies. The thermodynamic and transport propertycodes developed earlier for combustion plasma systemsare being modified for arc plasmas in temperatureranges upto 30,000 K. The codes will be useful indesign of plasma torches, high temperature plasma-assisted reactions and material processing. Plasmadiagnostic equipment for the measurement of tempe-rature, electrical conductivity, species density, velocityetc. have been developed and tested.

Plasma jet devices based on high intensity electricarcs have been designed and operated in air andunder water. Recently, the 100 kW submerged plasmacutting torch was operated to cut uranium, stainlesssteel and other alloy plates under water. Plasmasprayed thin coatings have been developed for complexgraphite assemblies and internal combustion enginesin response to specific user requirements. In addition,plasma sprayed coatings of several mm thicknesshave also been developed.

1-13 MHD Generation

Under the Magnetohydrodynarnic (MHD) ResearchProject, sponsored by the Department of Non-conve-ntional Energy, BARC has developed the key compo-nents for setting up an experimental plant at Tiruchi-rapalli at a power level oi 5 MW (Thermal). Thisincludes the design, fabrication and on-line testing of

MHD generator, 300 T electromagnet, special plasmadiagnostic equipment, high temperature ceramic mate-rials and control and instrumentation system for theexperimental plant. The complete data handling systemcomprising six front end processors, one intermediateprocessor and microcomputer has been commissionedat the MHD pilot plant at Trichy. Besides, a micro-processor based alarm annunciator for 168 parametershas also been installed and commissioned at the MHDplant, Trichy.

After the initial commissioning of the plant in1985, two major milestones were achieved during thecurrent year. In April 1986, the plant was successfullyoperated at rated input parameters with the MHDchannel delivering an output electric power of appro-ximately 3 kW. During September 1986, a 2200 hourplasma run was carried out to test individual sub-systems.

BARC has trained BHEL engineers in variousaspects of the MHD generator and has transferredknow-how on the channel design, special processingtechniques and plasma diagnostic equipment.

Currently BARC is engaged in basic studies onclosed cycle magnetohydrodynamic systems basedon inert gas and liquid metal. A 100-kW seeded inertgas facility is currently under studies for plasma fluc-tuations and instabilities. A compact mercury-air liquidmetal MHD facility was commissioned and experi-ments are conducted with varying parameters. Opencircuit voltages of 15mV have been obtained corre-sponding to a velocity of 3-5 m/s of liquid metal.

1-14 Pulse Power and Particle Beam Technology

Pulse power techniques and particle beams havepotential applications in materials research, fusionresearch defence and industry. Pulse power systemsoperating at 300 kV and 50-100 ns duration withenergy upto 1000 Joule have been developed and arebeing used for Relativistic Electron Beam (REB) andplasma experiments. Capacitor banks upto 100 kJenergy have also been developed and are being used

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1986-87

for generating pulsed high magnetic fields and forspecial applications in nuclear research. Some of theindustrial applications where the technology deve-loped here has been put to use are flash x-ray dynamicradiography and impulse charging of permanent mag-nets. Using pulsed high magnetic fields feasibility hasbeen established for repositioning of garter springsand non-thermal joining of metals.

The insulation system of the Tesla transformer ofREB-200 pulse power system has been improved andthis system is being regularly used for REB/plasmaexperiments. The 1 kJ pulse power system (REB-1000)based on deionised water line was satisfactorily testedat 450kV. Further tests to operate it at the designrating of 600 kV are in progress. Charging supply tocharge a 5 kJ capacitor at the rate of 500 Joules/sec,has been built for the above system. Based on theexperience gained a scaled-up pulse power system of5 kJ at 1 MV has been designed and fabrication workis in progress. With some modifications operation offour of the eight modules of the 100 kJ capacitor bankhas been satisfactorily tested for producing pulsedhigh magnetic fields of 3 kG in a large volume of 120litres.

Based on the simulation experiments conductedon repositioning of garter spring located in the annularspace between pressure tube and calandria tube ofPHWRs, a detailed project report has been preparedand submitted to Nuclear Power Board for considera-tion. In view of the importance of ElectromagneticInterference (EMI) in research and defence, and anadvisory group has been formed to study the associatedproblems.

Pulse shaping results of REB generation in gasfilled diodes have been interpreted to yield data forformative time of electrical breakdown in gases. Amodel has been developed to explain the results ofpulse shaping in gas filled diodes.

Efficient transport of intense REB in gas andplasma channels is important in inertial and magneticfusion research. Transport experiments with 10" watt,

0 25 MeV REB in argon and hydrogen indicate maxi-mum charge transport of 75% at a distance of 1 metreat pressures of 0 25 and 2 torr respectively. Numericalcalculation of charge transport and plasma currenthave been carried out and the calculated parametersare in agreement with experimental results.

In view of the above successful experiments inbeam generation and transport in gases around 0-1torr pressure, a foil-less system that is free from foildamage and replacement is considered feasible. Henceexperiments in foil-less diodes have been conduc-ted with a copper mesh anode and superimposedmirror magnetic fields. The experimental results with 5kA REB at pressure around 01 torr are being analysed.

The target plasma required for REB-plasma studieshas been generated using coaxial plasma gun and theplasma produced has been characterised using cyli-ndrical Langmuir probes. The typical electron densityand temperature measured by the probe were in therange of 1-3 5 * 10' l cm 3 and 5-7 kV respectively.

An area of considerable interest in beam-plasmainteraction is efficient transfer of energy from beam tobeam. Experiments on REB-plasma interaction using x-ray, microwave and optical diagnostics are being setup to study and optimise beam energy coupling toplasma. A theoretical model for understanding plasmaheating by intense REB is also being developed

Collective ion acceleration and pulse neutrongeneration have important applications in nuclearresearch. Numerical studies of collective accelerationof ions by REB using single as well as multipleinjection has been carried out and the results indicatethe possibility of accelerating Fe'26 ions to 2-4 GeV ina transit distance of 10 metres using 300 keV. 25 kA.50 ns REB. REB-1000 system is being developed forthe study of collective acceleration of light and heavyions.

The 75 joule, 300 kV REB diode earlier developedis being modified and redesigned for pulse neutronsource applications.

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1986-87

115 Electron Beam Technology

Electron beam is a highly efficient heat source formetallurgical applications such as melting, weldingand evaporation and is almost indispensible whenworking with highly reactive and high temperaturematerials used in nuclear and aerospace industry.First of the two EBW machines being built for specialapplications has been assembled. This is a high vacuumchamber type machine with an electron beam gunrated at 150 kV and 6 kW and is to be used for weldingof end discs to long thin tubes of high strength steel.Design of second machine has been modified to makeit more compact by incorporating two electron beamguns to weld the discs at two ends of the tube. It ispresently under fabrication. All the major subsystems

of the 80 kW EB melting furnace for melting ofHafnium/ Niobium are ready and assembly work is inprogress.

Design of a 20 kW EB evaporation system formetallurgical applications has been completed and allthe major subsystems are under fabrication. An indi-genously built EBW machine available in BARC hasbeen put to extensive use for various applications forusers within DAE family and outside.

Industrial Design

The ultra high vacuum system for the gravitationexperiment being carried out by TIFR was completedand is being set up.

Publications

BARCANNUAL REPORT

1986-87

Alok Saxena and V.S. Ramamurthy, "Surface diffuseness of defor-med and rotating nuclei", Pramana (J. Phys.), 27, 679 1986.

SX Kataria, R. Govil, A. Saxena and H.N. Bajpei. "Chemical Effects inX-Ray Fluorescence Analysis", X-Ray Spectrometry. 15, 49,1986.

S.K. Kataria, V.S. Ramamurthy, V.G. Gaonkar and Surendra Kumar"Personal Computer-based CAMAC system for data acquisitionsystem". Bull of Materail Science, 8, 225 1986.

C. Jacquemin and S.K. Kataria, "Exact Calculation of nuclear leveldensities for many non-interacting fermion systems in large

• model spaces.". Z. Phys., A329, 261 1986.

S..K. Kataria (Ed), "Micro, mini and personal computers in theLaboratory", Oxford-IBH, Delhi 1986.

Hashima Hasan and B.K. Jain, "Energy Dependence of the 6Li(P,A + +) 6He! Reaction", Phys. Rev., C 33, 1020 1986.

M.K. Mehta and S.Kailas, "Proton-nucleus optical model potential atlow energies - a review". Pramana (J. Phys.) 27, 139, 1986.

P.P. Singh/Q. U, P. Schwandt, W.W. Jacobs, M. Saber, E.J. Stephenson, A.Saxena and S. Kailas, "Elastic and inelastic scattering of270 MeV He particles from 5SNi, 90Zr, "6Sn and 20SPb". Pramana(J. Phys). 27, 747 1986.

S Kailas and S.K. Gupta. "Nucleus-nucleus potential from fusionand elastic scattering", Phys. Rev., C34, 357 1986.

S. Kailas. "Thermonuclear reaction rates from (p. n) reactions ontargets with A - 92-122". J. Astrophysics and Astronomy, 7, 531986.

D.J. Hinde. R.J. Charity, G.S. Foote, J.R. Leigh, J.O. Newton, S. Ogaza andA. Chatterjee, "Neutron Multiplicities in Heavy-Ion-InducedFission : Time scale of Fusion-fission", Nuclear Physics, A452,550 1986.

R.J. Charity, JR. Leigh, J.J.M. Bokhorst, A. Chatterjee, G.S. Foote. D.J.Hinde, J.O. Newton, S. Ogaza and D. Ward, "Heavy-Ion InducedFusion-Fission Systematics and the Effect of the Comp-ound-Nucleus Spin Distribution on Fission-Barrier Determi-nation", ibid, A457, 441 1986.

Kuldeep and Animesh K. Jain, "Stopping Cross-sections of He' ionsin the Metallic Glass Fea2 B1B", Nucl. Instrum. Meth., 815, 101,1986.

Kuldeep and Animesh K. Jain, "Artefacts in RBS Analysis of LaserTreated Surfaces", ibid, B15. 250 1986.

N.N. Ajitanand, G. La Rana, R. Lace, David J. Moses, Louis C. Vaz,G.F. Peaslee, DM. de Castro Rizzo, Morton Kaplan and John M.Alexander, "Clues to the shapes of very hot nuclie : Calcuttapatterns for evaporative emission from deformed nuclei", PhysRev., C 34, 877 1986.

N.N. Ajitanand, R. Lacey, G.F. Peaslee. E. Duek and John MAlexander, "GANES : A computer program for the simulation oflaboratory spectra of evaporative light particles in heavy ionreactions", Nucl. Instr. & Meth., A 243, 111 1986.

M. Kildir, D. Logan, DO. Eriksen, D.J. Moses, Morton Kaplan, E. Duek,Louis C. Vaz, N.N. Ajitanand, John M. Alexander, M.S. Zisman,"Fission reactions of 469-MeV S6Fe + 2MU : Detection of 4He/'Hemission from pre- and post- fission sources", Z. Phys., A 317,291 1984.

N.N. Ajitanand. John M. Alexander, H. Delagrange, E. Duek, DOErikoen, D. Guerreau, Morton Kaplan. M. Kildir, L.K. Kowalski. R.Lacey, D. Logan, D.J. Moses, G.F. Peaslee, Louis C. Vaz and M.S.Zisman, "Multiplicities for evaporative 4He emission in heavy ionreactions : Relationships to spin and lifetime expectancy of thecomposite nucleus", ibid, A 316, 169 1984.

David J. Moses, Morton Kaplan, John M. Alexander, D. Logan. M.Kildir, Louis C. Vaz, N.N. Ajitanand, E. Duek and M.S. Zisman"Particle spectra from reversed kinematics : Powerful probes ofhot rotating nuclei", ibid, A 320, 229 1985.

K.N. Iyengar, R.P. Anand, N.N. Ajitanand. D.M. Nadkarni. A.K.Mohanty. "Measurement of proton induced fission cross-sectionof 235U at sub coulomb barrier energies". Nuclear Tracks. 12.

(1-6)333 1986.

A.K. Mohanty, K.N Iyengar. N.N. Ajitanand. "Automatic scanning ofenlarged fission tracks in lexan polycarbonate", ibid, 12. (1-6)227 1986.

M. Lahanas. D. Rychet. P. Singh, R. Gyufko, D. Kolbert. B.V. Kruchten.E. Madadakis and C.A. Wiedner "Inelastic scattering from MZr and96Zr". Nucl. Phys , A455, 399 1986 (MPI, Heidelberg).

P. Singh, D. Rychet, R. Gyufko, B.V. Kruchten, M. Lahanas and C.A.Wiedner, Alpha Scattering from 92Zr and 9*Zr", ibid, A458, 1 1986.

P.K. Bhattacharya. M.J. Kansara, T.P.S. Nathan, P. Singh and A.G.Wagh, "Investigation of Laser-Annealed Antimony Implanted Siby Ion Back Scattering and channeling and structure analysis."App. Phys., A39, 147 1986.

R.K. Choudhury et. al. "The correlation of linear and angularmomentum transfer in the reactions of 310 MeV 16O With '"Sm."J.de. Phys.. 47, C4, 101 1986.

V.S. Ramamurthy and S.S. Kapoor. "Entrance Channel Effects onfission fragment anisotropy-a direct experimental signature offission before full equilibration, (pre-equilibrium fission)". Inter-national Nuclear Physics Conf., Harrogate, Aug. 1986.

B.K. Jain. S.K. Gupta et al., "A study of ^(P. ,'. • *) 'He reaction in 400-500 MeV range using cooled beam", Exptl. Proposal accepted byIndians University Cyclotron Facility.

B K. Jain. "A(P. P n ') /I reaction, a pion-precursor probe in nuclei".DAE NP Symposium, Waltair, 1986.

10

BARCANNl/AI. RKPORI

1986-87

AB Santra and B.K Jajn. The pC'He. 1) ' ' reaction". Int. Conf onNuclear Physics. Harrogate. 1986

A B. Santra and B K Jain. "Energy and momentum spectrum of p('He. t) reaction". DAE NP Symposium Waltair. 1986.

K Kumar. S.K Katana and VS. Ramamurthy. "Classical TrajectoryModel with Asymmetric friction for Heavy Ion Fusion". N.P.Symposium. Waltair 29B. 241 1986 * ..

A K Mohanty. V S. Ramamurthy. and S K Katana. "Role of neckdegree of freedom in sub barrier fusion enhancement", ibid.29B 25 1986

S K Kalaria. Chemical effects in EDXRF and PIXE studies". Proceeding of National workshop on XRF studies. Sept 1986

S.K. Katana. "Data Acquisition Systems". IP A Seminar on NuclearInstrumentation for Heavy Ion Laboratories : May 1986. _ .

S Kailas and S K Gupta. Comparison of nucleus nucleus potential ,determined from analysis of fusion and elastic scattering ..H1C0IED Conference. Caen. France 1986 V;

SK Gupta. A Chatteriee. S Kailas and SS Kerekafte. "Fraunhofferdiffraction pattern in the large background of Fresnei diffractionillustrated by alphas scattered by Bismuth 209 at 50 5MeVincident energy Int Conf on Nuclear Physics Hanogale UK282 1986

A Saxena. S Kailas P P Singh. P Schwanrit. EI Slephenson QCher, and DN t'nesel. "Excitation of giant resonances m ' Zrinelastic scattering of 270 MeV 'He particles", ibid 85. 1986

A Chatteriee SK Gupta. S. Kailas and S S Kerekatte. Continuumspectra for Bi (•/ •/) reaction at 50 MeV '. Symposium on NuclPhys . W.iitaii 29B 47 1986

S Kailas. A Saxena. P P Singh. P. Schwandt. E J Stephenson. QChen. Inelastic scattering of 270 MeV He particles to the giantresonance region in Pb". ibid. 29B 87

P Singh, S Kailas. D Rychel. R Gyusko. B.V. Kurchten and C AWiedner. "Elastic Scattering of 35 4 MeV alph particles from•' '•••••••••••zr". i b i d . 2 9 B 1 0 7

S Kailas, "Cooled detector systems m scattering chamber". IPAConf. on Instrumentation for Heavy Ion Laboratories. Bombay1986

S.K Gupta and S. Kailas. "Some aspects of light-ion optical potentialsSymposium on Nuclear Physics Waltair 1986.

A Chatteriee. SK Gupta. S Kailas and S.S. Kerekatte. "A simplemethod of determining Beam Energy". Workshop on Utilisationand future programme of Variable Energy Cyclotron. CalcuttaFeb 1986

S K Gupta. Elastic and Non Elastic Reactions with Alpha Particlesat VECC Energies . ibid

A. Chatterjee. "4.- Neutron Multiplicity Defector IPA Conference onInstrumentation for Heavy Ion Laboratories. Bombay 1986.

V P Salvi. S.V Vidwans. A.A. Rangwala. B M. Arora Kuldeep andAmmesh K Jam. Formation of Titanium Silicides by High DoseIon Implantation . 5th Intl Conf. on Ion Beam Modification ofMaterials. Italy June 1986.

• S K. Sharma. Kuldeep and Animesh K. Jam. Effect of Relaxation andCrystallization on diffusion of Au and Sb in Amorphous Fe. B .

' . Solid State Physics Symposium. Pant Nagar, Dec 1986

• .NN Ajitanand. K.N. Iyengar. DM. Nadkarm. RP Anand and AK'."• Mohanty. "Proton of coulomb excited target state7". Nucl Phys

Symp(DAE)29B. 133 1986

N N Ajitanand and DM Nadkarni, "Evaporation model foi LCP• . emission in low energy fission . ibid . 29B 269 1986

* . R K Choudhury. B K Nayak. DC. Biswas and M Lai. L X ray lineintensity ratios in Au and rare earth elements for incident proton

• energies of 1 0 to 2 5 MeV". Nineth International Conferences onApplication of Acceletors in Research and Industry. 1986

R Vanna. G.K Mehta. A Saxena A Nijasure. D M Nadkarni. R KChoudhury. S.S Kapoor and V.S Ramamurthy. Study of thereaction (v / f) by 60 MeV -/ particles on "U Nucl Phys Symp(DAE) 29B. 137 1986

M N Rao A Nijasurp and R K Choudhury. Fission fragment massenergy and angle measurements in •' U (n . f) using back toback gndded lonisatinn chamber ibid . 29B 139

D C Biswas. V S Ambekar R.V. Srikantiah. S R S Murthy and R KChoudhury. A position sensitive gas proportional counter tele-scope for heavy ions . ibid 97

M. Lai. RK Choudhury and BB Singh Investigations of toxicmetals in Ayurvedie drugs by energy dispersive X ray fluorescenceanalysis . Nation^ Seminar on EDXRF technique and its applications1986

RK Choudhury BK Nayak. S Gupta VR. Rao. M Sudarshan andD T Khating Multielement analysis of trace elements m streamwater by PIXE'. ibid

M Lai. RK Choudhury, B.K Nayak and HN Bajpai, "Energydispersive X ray analysis of rare earth elements in IndianMonazifes by radio isotope excitations . ibid

R K Choudhury. Methods of data analysis in EDXRF studies" ibidM A Eswaran Suresh Kumar. N L Ragoowansi and E T Mirgule.

"Resonant Stiiictures in the excitation functions of the reactions•Mg(He ' C ) " 0 a n d Mg ( He He1) 'Mg m the range E 26 to

37 MeV International Nuclear Physics Conf Harrogate (UK)Aug 1986

P Singh and PK Bhattacharya Design of a MeV Ion BeamMictoprobe Pioc Geiman Physical Society Meeting HeidelbeigMarch 1986

R Gyufko, D Kolbert. UV Kiuchten M Lahanas. E Madadakis. DRychel P Singh and C A Wiednei Simultaneous measurementof Elpcttomagnchc and Isosral.n ti.msition lates from (v ; \experiments ibid

11

BARCANNUAL REPORT

1986-87

R. Gyufko, D. Kolbert, B.V. Kruchten. M. Lahanas. E. Madadakis, D.Rychel. P. Singh and C.A. Wiedner. "Inelastic 2-scattering from9096Zr". ibid.

R. Gyufko, D. Kolbert, B.V. Kruchten. M. Lahanas, E. Madadakis. D.Rychel. P. Singh and C.A. Wiedner, "Construction and testing of amultiwire parallel plate detector", ibid.

R. Gyufko, B.V. Kruchten. P. Singh and C.A. Wiedner. "Field measure-ments of magnet of Heidelberg Test storage Ring", ibid.

P. Singh, S. Kailas, D. Rychel, R. Gyufko. B.V. Kruchten and C.A.Wiedner. "Elastic Scattering of 35 4 MeV Alpha particles from9092949eZr. Proc. Nucl. Phys. Symp 29B, 107 1986.

P. Singh and P.K. Bhattacharya. "Design of a Microprobe for MeVProton Beams", ibid 275.

P. Singh. "Magnetic Spectrographs for Nuclear Reaction Studies",IPA Workshop cum seminar on Instrumentation for Heavy IonLaboratories, BARC. Bombay May. 1986.

P Singh. "DC. Quadrupoles", Workshop on Ion optics, T(FR. Bombay,Sept. 1986.

P. Singh, "2 MV Tandem Accelerator", National Seminar on Teachingand Research in Nuclear Sciences and Technology (In Hindi).BARC, Bombay Dec, 1986

S.K. Paranjpe, R. Chakravarthy, H.S Bisht and D.K. Kulkarni, "NeutronDiffractions Study of mixed Li-ferntes. Physica Status Solidi,98 (a) 1986.

R. Chakravarthy S.K. Paranjpe. S.K. Kulshreshtha and L. MadhavRao. "Magnetic Structure of Fe0 „ Mo 2 Sn (M-Mn. Co). Solid StatePhysics (India) 29C, 148, 1986.

Saibal Basu and I. Madhav Rao. "Computer Simulation of NeutronGuide Tube Performance at Dhruva Reactor, ibid . 29C 254 1986.

K.R. Rao, "Atomic Energy in India : An Historical Perspective". "TheCultural Heritage of India" Vol. VI. Science and Technology Ed. P.Roy and S.N. Sen, Published by the Ramaknshna Mission.Institute of Culture, Calcutta 1986.

S L. Chaplot and K.R. Rao, "Molecular Dynamics Simulation of NH4

Reorientation in NH4C1, Phys. Rev. B 33. 4327 1986.

N. Choudhury, S.I. Chaplot and K.R. Rao, "Phonon Density of States,free energy and anharmonicity of LiKSOV. ibid . 8507 1986

S I. Chaplot and R. Mukhopadhyay. "Monoclinic-amorphous-cubicphase transitions in tetracyanoethylene under high pressure",ibid., 5099 1986.

S.I. Chaplot. "Computer simulation of dynamics in solids (InvitedReview Paper)". Current Sc 55, 949 1986.

R. Mukhopadhyay. S.I. Chaplot and K.R. Rao, "Phase transormationsintetracyanoothylene". Orientational Disorder in Crystals 6(1). 91986, Newsletter ed. R 0 Weir. Ontario, Canada

P S. Goyal. J. Penfold and J. Tomkinson. "Observation of neutronincoherent inelastic spectioscopy of split higher harmonics ofthe NH4 ion librational mode in the cubic phase of NH4Br". Chem.Phys. Lett 127,483 1986.

R. Mukhopadhyay, S.K. Paranjpe. and S. Bhakay-Tamhane. "Powderneutron diffraction study of low temperature phase transition inLiKS04. Solid State Commun. 58. 203 1986.

G.P. Das, "A Position space analysis of electron momentum density",Indian J. Phys. 60A. 11 1986.

G.P. Das and V.C. Sahni, "Determination of band occupanices fromFourier transformed Compton profiles", Chem. Phys. letter, 174,227 1986.

G.P. Das and V.C Sahni. "On the use of Fourier transformedCompton Profile for the determination of band occupancies incertain solids", Pramana-Journal of Physics 27, 585 1986

R. Subramanian and V.C. Sahni, "Vector Spaces and the labelling ofdiffraction peaks in crystals and quasicrystals", Phys. Stat. Sol.(b) 135, K95 1986.

N.C. Jain. "Resolution function of CMA systems used for Augersignal measurements", Ind. J. Pure Appl. Phys. 24, 399 1986.

SB. Ota and V.C Sahni. "Study of tetragonality parameter ofmartensitic transition in A15 compounds". J. Phys. C . Sol. St.Phys. 18. 6471 1985.

SB Ota. "Martensitic transition and superconductivity in A15compounds", Physica 1418 159 1986.

SB. Ota. "Theoretical study of the structural transitions and relatedanomalies in A15 pseudobinary alloy Nb3 Sn, -Sbx". J. Phys. C19. 6563 1986. ~X

M K. Sanyal. V.C. Sahni and G.P. Das, "Multiple microprocessorbased data acquisition system for some condensed matterphysics experiments". Physics. News. 16(2). 53 1985.

K.R.P M Rao and P.K. Iyengar. "A static and Dynamical MossbauerStudy of Photochemical Biological Switch of Valence states in theRespiratory Pigments of Rhodospirillum Rubrum Bacterium".Phys Letters 115. 187 1986.

K. V. Bhagwat. DC Khandekar and S.V Lawande. "Nature of ElectronicSpectrum in Positionally Disordered systems with Weak Electron-Ion Potential, Phys. Rev B34. 8979 1986.

M L Bansal and A P. Roy. "Raman study of phonons and intrabandelectronic excitations in antimony. Phys Rev B33. 1526 1986.

SK Deb. ML Bansal and A P Roy. "Raman scattering investigationsof the onentational dynamics of methyl iodide". Chem. Phys. 110.391 1986

M L Bansal and A.P Roy. "Phonon damping in Hg0 8,Cd017Te". SolidState Physics 29C 125 !986

S K Deb Correlation function for Molecular Reorientation inLiquids Generalized M-diffusion model". Physics Teacher 28,70 1986

12

BARCANNUAL REPORT

1986-87

N. Choudhury. S.L. Chaplot and K.R. Rao, "Specific heat, bulkmodulus and thermal expansion of forsterite", Solid State Phys.(India) 29C, 119 1986.

S.L. Chaplot, "Lattice dynamics and pressure dependence in C6C1313",Solid State Phys. (India) 29C. 120 1986

R. Mukhopadhyay, M.S. Somayazulu and S.L. Chaplot, "Latticedynamics of TLN03: rigid molecular-ion model", Solid StatePhys. (India) 29C, 134 1986.

S.L. Chaplot and K.R. Rao, "Computer simulation and lattice dynamicsof NH4Br", ibid., 29C, 135 1986.

P.S. Goyal, B.C. Boland, J. Penfold, and J. Tomkinson, "Higherlibrational modes of NH4 ion in ammonium halides : High resolutionneutron incoherent inelastic spectra". Int. Conf. on "Dynamics ofMolecular Crystals". Grenoble, France 1986.

B.A. Dasannacharya. P.S. Goyal, C.L. Thaper, J. Penfold, and J.Tomkinson, "Dynamics of H2O in Ba(C103)2 H20", Solid StatePhysics (India) 29C, 132 1986.

P.S. Goyal, B.A. Dasannacharya, C.J. Carlile and R.C. Ward, "Reorien-tation of NH., ions in Ferroelectric phase of (NH4)2 So4",ibid., 1891986.

TV. Chandra Shekhara Rao and V.C. Sahni, "Analysis of-different

schemes for estimating peak strengths in AFS". ibid., 284 1986.

Hemant Salunke and V.C. Sahni, "Effect of off-axial source locationon the resolution function of CMA". ibid., 268 1986.

M.K. Sanyal, S.B. Ota and V.C. Sahni, "New scheme for minimizingdigitization error in a PSD system", ibid., 256 1986.

G.P. Das, K.V. Bhagwat and V.C. Sahni, "Reconstruction of ElectronMomentum Density using Compton profiles", ibid., 112 1986.

M.K. Sanyal, G.P. Das and V.C. Sahni, "A Rietveld fitting program forenergy dispersive X-ray diffraction", ibid., 270 1986.

S.B. Ota, V.C. Sahni, G.P. Das, T.V. Chandra, Sekhar Rao, M.K. Sanyaland H. Salunke, "Measurement of frequency dependent specificheat", ibid.,269 1986..

S.B. Ota, "Effect of stress on superconducting transition in A15compounds", ibid.,195 1986.

P.S. Goyal, "Use of pulsed Neutron Sources in Condensed MatterResearch : Some recent results", ibid., 1986.

K.R.P.M. Rao, "Mossbauer Spectroscopy in Biology, Medicine andIndustry", ibid.,1986.

P. Chaddah, "Disorder in superconductors-a study on Cu2Mo6 Sa,Indo-Soviet Symposium on Low Temperature Physics. Moscow,May 1986.

G. Ravi Kumar, P. Chaddah, K.L. Patel and Y.D. Dande, "Resistivemeasurement of critical current in superconducting composites,Solid State Physics (India) 29C, 142 1986.

P. Chaddah, "Experimental methods in superconducting materialsresearch", Workshop on Physics. Metallurgy and Technology ofSuperconducting Materials, Kalpakkam, Jan 1986.

M.R.L.N. Murthy, "Crystal Growth Apparatus for preparation ofneutron monochromatic crystals and other alloys", Symp. onCrystal Growth, Calcutta, Jan 1986.

Y.D. Dande. "Critical Current Measurements in Practical Supercon-ductors", Workshop on Physics. Metallurgy and Technology ofSuperconducting Materials, IGCAR, Madras, Jan 1986.

G. Ravi Kumar. P. Chaddah, K.L Patel and Y.D. Dande, "ResistiveMeasurement of critical current in superconducting composites",Sol. State Phys. (India) 29C, 142 1986.

S.B. Ota, "Structural instability and superconductivity in A15 com-pounds", Fourth Colloquim for Young Physicists. SJNP, Calcutta,1986. Seminar given in SERC School in Condensed MatterPhysics, Sannniketan 1986 and at Institute of Physics, Bhubaneswar1986.

S.B. Ota, "Structural instability and superconductivity in A15 com-pounds". Thesis. Bombay University 1986.

P.S. Goyal, J. Penfold and J. Tomkinson. "The influence of multiplescattering on the inelastic neutron scattering spectra of molecu-lar vibrations", RAL 86-070 Report of Rutherford AppletonLaboratory.

L. Madhav Rao, "Neutron Guide Elements", Topical Review meetingThin Film. Instrumentation Society of India, S.V. University.Tirupati", (Invited talk) Aug. 1986.

G.P. Das and S.K. Ghosh, "Exchange-correlation energy densityfunctional in momentum space", Proceedings of "Symposium onCurrent Trends in the Physics of Materials", Ed. M. Yussouff.World Scientific Publishing Co., Singapore, 1986.

S.B. Ota, "Band Jahn-Tellen effect and Superconductivity in A15compounds", Proc. of 2nd International Conference on phononphysics, Budapest, (World Scientific : Singapore) 862 1985

Ml. Bansal and A.P. Roy, "Raman study of the phonon spectra inHg,, K,Cd ,, Te from 10K to 250K". Proc. Xth Int. Conf. RamanSpectroscopy, Edited by W.L. Peticolas and B. Hudson (Univ. ofOregon), 7 1986.

V. Vijayakumar, CM. Sharma, S.K. Sikka and R. Chidambaram, "BCT-HCP transformation in Cd-Hg alloys under pressure", J. Phys. F16, 831, 1986.

H. Sankaran, S.M. Sharma and S.K. Sikka, "On observation of thevolume discontiniuty in the insulator to metal transition in Csl inX-ray diffraction experiments", Phys. Bev. B 33, 3543, 1986.

V. Vijayakumar, S.K. Sikka, B.K. Godwal and R. Chidambaram."Isostructural electronic anomoly in La and La-Th alloys".Physica, 139 and 14OB, 407. 1986.

H. Sankaran, S.M. Sharma. S.K. Sikka and R. Chidambaram. "HighPressure phase transitions in solids II: X-ray diffraction study of/i-dicholrobenzene," Pramana 27, 835, 1986.

13

BARCANNUAL REPORT

1986-87

B.K. Godwal. V. Vijayakumar, S.K. Sikka and R. Chidambaram,"Pressure reduced A1B2 to WgCu2 type transition in ThAl2", J.Phys. F 16. 1415, 1986.

S.K. Sikka and V. Vijayakumar. "On the structures of the distortedtec phase of rare earths and actinides. Some more possiblestructures", Physica B 144, 23, 1986.

S.K. Sikka. "Shock Hugoniot equation of state electron-band theoryapproach". "Shock Waves in Condensed Matter", ed, Y.M. Gupta71. (Plenium, New York) 1986.

B.K. Godwal. V. Vijayakumar. S.K. Sikka and R. Chidambaram.A1B2 to Laves Phase Transition in Th AI2 under pressure".Physica B144, 44, 1986.

S.M. Sharma, H. Sankaran and S.K. Sika, "Frozen Phonon calculationof soft mode : body centred tetragonal to hep transformation inHg and Cd Hg alloys", Solid State Phys. (DAE) 29C. 133, 1986.

S.M. Sharma, V. Vijayakumar. H Sankaran, B.K. Godwal. S.K. Sikkaand R Chidambaram, "An energy dispessive x-ray diffractionsystem for studies on polycrystalline samples under pressurewith a diamon'd cell", ibid, 267, 1986.

H Sankaran, S.M. Sharma, S.K. Sikka and R Chidambaram, "Highpressure phase transitions in /i-dichlorobenzene". XVm NationalSeminar on Crystallography, Jammu, 1986.

B.K. Godwal. "Shock Hugoniot calculations and shock velocity-particle velocity (Us Up) relations for molybdenum". Solid StatePhys. (DAE) 29C, 118. 1986.

S.C. Gupta and Y.M. Gupta, "Piezoresistance response of manganninfoils . Shock Waves in Condensed Matter", ed. Y.M. Gupta.Plenum, New York, 1986.

A. Sinha. SB. Garg and M. Srinivasan, "Sensitivity Studies of theNeutron Multiplicity Spectrum in the spallation of Pb Targets",Ann Nucl Energy, 13, 579, 1968; (A brief report also presentedat the 4th Int. Conf. on Emerging Nuclear Energy Systems held atMadrid Spain. 1986)

M. Srinivasan et al.. U-233 fuelled Homogeneous Reactor Experi-ments Purnima II : Experimental Results", Proc. Seminar on FastReactor Fuel Cycles, Kalpakkam. Tamil Nadu, Feb. 1986.

C S. Pasupathy et al., "Physics and Engineering Constraints in theDesign of U-233 Fuelled Research Reactor Kamiru". Sixth NationalSymposium on Radiation Physics. Kalpakkam, Tamil Nadu, March1986

K Subba Rao and M. Srinivasan, "Validation of Cross-section Dataused in the Design of U-233 Fuelled Reactor Experiment". IAEAInterregional Training Course on Preparation of Nuclear Data foruse in Reactor Calculations BARC. Bombay April 1986.

M. Srinivasan. K. Chandramoleshwar, C.S. Pasupathy. K.K. Rasheedand K Subba Rao, "U-233 Fuelled Experimental Reactors inIndia Purnia. II and Kamini, Proc. Fourth Int. Conf. on EmergingNuclear Energy. Madrid. Spain. lune 1986.

M. Srinivasan and T.K. Basu. "Fusion Breeder Concept . Proc.Seminar on Fast Reactor Fuel Cycle, Kalpakkam, Tamil Nadu.Feb 198R

V.R. Nargundkar. OP. Joneja, T.K. Basu and M. Srinivasan, "Neu-tronics of a Dense ZPinch Fusion Reactor, Proc. 4th Int. ConfEmerging Nuclear Energy Systems, Madrid. Spain 1986.

T.K Basil T Datta S.P Dange and M Srimvasn. "Experimental,mental Study of Neutron Multiplication in BeO the Shift RegisterCoincidence Technique". Ann. Nucl. Energy. 13 (10). 575. 1986.

SB Garg and R.P. Anand. "Neutron Induced Reaction CrossSections of Fe-56 in the Energy Range 1 to 20 MeV A WorkProgramme". First CRP Meeting Sponsored by IAEA Bologna.Italy. 1986.

SB. Garg and A. Sinha. "Pre-equilibrium Effects in Neutron Protonand Alpha Emission of Niobium", Radiation Effects. June 1986.

SB. Garg and A. Sinha. "Generation of ENDF/B-IV Based 35 groupNeutron Cross Section Library and its Applications in CriticalityStudies", ibid.

S.K.H. Auluck. "A mechanism for Taylor relaxation in Z-pinches. Part1. Dynamo mechanism", J. Plasma Physics. 35 2, 1986.

S.K.H. Auluck, "New terms in MHD equations and their implicationsfor the inertial confinement fusion concept", ibid. 36, 211 1986.

S.K.H Auluck, Rrelaxation of magnetic field in a plasma via thetearing mode", ibid, 35 (2), 311. 1986.

S.K.H. Auluck. Anurag Shyam and M. Srinivasan, "Role of "Diagnosticsin Unravelling the Physics of Plasma Focus Devices : A HistoricalPerspective", Proc. Workshop on Plasma Diagnostics, Indore.Madhya Pradesh, (Invited paper) Jan. 1986

A Shyam, M. Srinivasan and L.V. Kulkami, "Neutron DiagnosticsinPulsed Fusion Experiments", ibid.. (Invited Paper)

R.K. Rout. A Shyam and M. Srinivasan. "Diagnostics on a SquirrelCage Plasma Focus, ibid.

T.C. Kaushik and M. Srinivasan. "Diagnostics of an ElectricallyExploded Metal Foil Plasma Accelerator", ibid.

S.B. Garg, M. Srinivasan and K. Subha Rao. "Criticality Aspects ofReactor of Configurations Fuelled with Minor Actinides". Proc.Fourth Int. Conf. on Emerging Nuclear Energy Systems. Madrid.Spain. June 1986.

R.P. Patel. T.N Ranganathan and V.M. Padmanabhan. Structure ofbis (4 hydroxy-L-prolinate- N. 0) Palladium tnhydrate". ActaCrystallographica. C42. 1333. 1986.

V.M. Padmanabhan. VS. Yadav. R. Chadra and N.S. Poonia. "Crystalstructure o1 Qaicium bipyndyl Innilioplienolate National Seminaron Crystallography. Jammu. 1986.

V.M Padmanabhan and R.P. Patel. "Structure of L-prolate bipyndlyPalladim (II) chloride trihydrate". ibid.

14

BARCANNIAL RKPORT

1986-87

K. Swaminathan. U.C. Sinha. V.S. Yadava and V.M. Padmanabhan"Crystal structure pf Bipyridyl (N, N diacetatoanthranilato)Chromium (III) trihydrate", ibid.

V.K. Wadhawan and M.S. Somayazulu, "Atomic Mechanism ofFerroelastic Switching and Mechanical Twinning. Application toThahous Nitrate". Phase Transitions. 7, 59. 1986.

K.V. Bhagwat, V.K. Wadhwan and R. Subramanian, "A New Fourth-Rank Tensor for Describing the Acoustical Activity of Crystals".I. Phys. C. 19. 345. 1986.

V.K. Wadhwan, "Bicrystallography". Abstracts Book of XVm NationalSeminar on Crystallography. Jammu, 63, 1986.

V.K. Wadhwan, "description of Twinning in Terms of the Conceptsof Prototype Symmetry and Dichromatic Pattern" Abstracts Bookof XVIII National Seminar on Crystallography, Jammu, 56, 1986

R. Mukhopadhyay, M.S. Somayazulu and S.L. Chaplot, "LatticeDynamics of TINO3: Rigid Molecular-/! Model". Proc. DAE SolidState Phys. Symp., 29C, 134, 1986.

M.S. Somarazulu and V.K. Wadhawar, "Possibility of ReorientationalTransitions in Thallous Nitrate : : A Dielectric Study ", AbstractsBook, 4th National Seminar on Ferroelectrics and Dielectrics,Kharagpur, 1986.

T. Bandyopadhya and P.K. Sarkar, "Implement and com'parativedstudy of random sequences for nonlinear least square odatafittering", Pramana Physics) 28, 97, 1987.

S.K. Basu. T.K.Bhattachary and N.C. Bhattacharyya : "Analysisofmagnetic field data and computation of trim Coil Current forVEC", Proc. of 1 lth Int. CONF. on Cyclotrons and their applica-tions, Tokyo 1986.

S.K. Basu, R.K. Bhowmik et. al. "Gas-Jet coupled ISOL system atVECC", Proc. of 7th Tandem Conf. Berlin, 1977.

S.K. Basu, A. Chakroborty et. al. "Decay of 3 Sec 1<lOmHo". Proc. Nucl.Physics Symp 29B. 35 1986.

S.K. Basu. A. Chakraborty and S.K. Sana. "Optimum design of abeam transport system", Proc. of 11th Int. Conf. on Cyclotronsand their applications Tokyo, 1986.

A.K. Choudhuri, "Mass dependence of K /K' production and EMCeffect", Nuclear Physics Symp. Waltair, 29B, 1986.

A.K. Choudhuri "Hadron-nucleus scattering at large momentumtrasfer and anomalous A - dependence, ibid.

A.K. Choudhuri "A factorised density dependent interaction in thefolding model for heavy ion potential", Nucl. Phy. A459. 417.1986.

A.K. Choudhuriy and B. Sinha. "A microscopic optical model analysisof Heavy inns elastic scattering data using realistic NN interaction,

ibid. A 445,169. 1986.

A.K. Choudhuri 'A density dependent interaction in the folded alphanu-cleus potential, ibid, A449 243, 1986.

DP. Choudhuri, A Chakraborti et. al. the "The characterisation of semiconductor for oxygen impurity by Charge particle acivation analysisVI International Seminar on Semiconductor bs Devices. Dec. 1986.Calcutta.

D.P. Choudhuri. A Chakraborti et al, "The determination of lightelements impurity in high purity meterials by charge particleactivation analysis", Seminar on Physics and techology of parti-cle Accelerators and their applications, Jan. 1987.

DP. Choudhuri. J. Choudhury et al. "The study of wear betweenpiston ring and Cylinder housing of an internal Combustonengine by thin layer activation technique", ibid.

J.N. De. B C Samantha and M.M. Mazumdar "Vacuum Polarisationand nuclear mass formulae". Nucl. Phys. A451,160. 1986.

J.N. De and S.K. Samaddar "Nonequilibrium nucleon emissionaround the Fermi region.. Journal de physique, 47, C4-77 1986.

J.N. De. K. Krishan and S.K. Samaddar. "Isospin correlated exchangeversus cluster exchange". Zeitschrift fur Physik A325. 79. 1986.

Md. Ismail. "Measurement and analysis of Ta (al. 4n) reaction "Nuclear Physics Symp. Waltair. 2B 1986.

Md. Ismail. "Alpha-deuteron elastic scattering at 40 MeV". NuclearPhysics Symp. 28B 316. 1985 and International Few bodyConference, Sendai. Japan, 1986.

Md. Ismail "Absorption effects in alpha-deuteron elastic Scatteringat 40 MeV", Nuclear Physics Symp. 29B 231. 1986

B.K. Khasnabis, T. Bandyopadhyay et al, "Spectrum measurement ofneutrons from 40 MeV alpha particle bombardment of tantalum".Ind. J. of Phys. 61A 93 1987.

G. Muthukrishnan and D. Gopinath "Pion transport studies". PhysicsMed. Biology. 31 (1), 17, 1986.

P.K. Sarkar and MA. Prasad, "A comparative study of pseudo andquasi random sequence for the solution of integral equations", J.of Computational Physics, 68, 66, 1987.

R.P. Sharma and AS. Divatia "Fabrication of lithium drifted silicondetectors by constant temperature method. Pramana - J. Physics.26. (3), 191. 1986.

Bikash Sinha, "Thermometric Signals of Quark-Gluon Plasma". Nucl.Phys. A 459,. 1109. 1986.

From Nuclear matter to Quark-Gluon Plasma - Released on ThursdayMorning, May 1, 1986 for the Special Invited Talk by theAmerican Physical Society, Spring Meeting 1986.

A. Raha and B. Sinha. "Quark-Gluon Plasma • Measuring (n,,/y) Ratiowith Dilepton," Phys. Rev. Let.. 58. 101. 1987.

MR. Prasad. N S. Dixit. MN Trupti. N. Venkatramani and V.K.Rohatgi. "Spectroscopic method of temperature measurement inMHD plasmas". Research and Industry 30. 331. 1985.

15

BARCANM'AL REPORT

1986-87

N Venkatramani ar.d V.K. Rohatgi. "Dynamic thermocouple techniqueto measure high gas-stieam temperature". Research and Industry30. 494. 1985.

A V Bapat and S. Suryanarayanan, "Vibration of rectangular plateswith simple supports on two opposite edges and elastic restraintsand point supports on other edges". Nineteenth MidwesternMechanics Conference. Columbus. Ohio U.S.A. Sept 1985.

P. Satyamurthy. N.S. Dixit. N Venkatramani and V.K. Rohatgi."Liquid metal MHD generator system". BARC-1291. 1985.

PR. Dastidar. V.K. Rohatgi, and S Sridharan. "Commissioning of theIndian MHD Installation". MHD Theory. Power Generation andTechnology 2, 19. 1986.

P.V. Ananthapadmanabhan. SB. Menon. N. Venkatramani and V.K.Rohatgi. "Thermal shock behaviour of partially destabilizedzirconia". Ceramic International 12. 107. 1986.

P.B. Shrivastava. Y.N. Rao. N. Venkatramani and C.K. Mittal. "Ni-B, Ni-Palloy coatings on ceramic and metal substrates by electrolesstechnique". International Conference on Electrodeposition andElectroforming. Bangalore 1986

J. Karthikeyan. K.P. Sreekumar and V.K. Rohatgi. "Plasma sprayingof ceramics", Seminar on Thermal Spraying. Bangalore, May1986

B.K. Karan, Ramkumar Nair. N. Venkatramani and V.K. Rohatgi."Performance of magnesia as insulator in hot MHD generator".Ninth Int. Conf. on MHD Electrical Power Generation. Tsukuba.Japan No. 1986.

V.K. Rohatgi. N. Venkatramani. P. Satyamurthy. A.K. Das. DP.Chakravarthy, N.S Dixit and T.K. Thiagarajan. "Analysis ofthermal and gas dynamic parameters of blue water gas combustionproducts during the first plasma generation run of the IndianMHD facility", ibid.

P.V. Ananthapadmanabhan and V.K Rohatgi, "Structure and thermo-physical properties of"

0-9 (ZrOJ, ,<CeO2) 0 1 [Yfi,].

Third Int. Conf. on Zirconia-Zirconia 86. Tokyo, Japan, Sept. 1986.

G.P. Gupta and ML. Mittal.' Convective Alfven-ioncyclotron instabilityin aniostropic turbulent plasma with a Finite Beta", ThirteenthIEEE Int. Conf. on Plasma Science. Saskatoon. Canada. May 1986.

G.P. Gupta. "Electrodynamic problems of plasma in combustionMHD generators". Fourth Colloquium for Young Physicists. IndianPhysical Society. Calcutta. Aug 1986.

S N Sahasrabudhe. P.S.S Murthy. N. Venkatramani and V K. Rohatgi."Laser doppler anemometry measurements in a 500 kW MHDchannel". Proc. Workshop on Plasma Diagnostics, Centre for Adva-nced Technology. Indore 1986

S V Deshmukh. "Electron density, measurements by far infra redlaser interferometry". ibid.

N Venkalramani. ' Diagnostics of thermal plasmas", ibid. (Invitedtalk)

J. Karthikeyan. K.P. Sreekumar and V K Rohatgi. "Recent advancesm plasma spraying". Seminar on Thermal Spraying ApplicationsSecunderabad. Nov 1986.

J Karthikeyan et. al Status report on ceramic coating technology.Prepared by Expert Group on Ceramic Coating Technology. DST.Govt. of India 1986

PH. Ron and R P. Gupta. "Opening switches in pulsed powersystems I". Technical Report. National Research Council ofCanada (NRC). TR-GD-007. NRC No. 25437. 1985/10

V R. Jujaray. ST. Iyyengar. PH. Ron and V.K. Rohatgi. "Developmentof 100 KJ capacitor bank". Proc. Intnl Seminar and Exhibition onCapacitors CAPACIT-86. Bombay. Dec. 1986.

PH. Ron. "Breakdown in electrical insulation". Workshop on PulsePower Techniques and Applications. BARC Bombay. April 1986

K.V. Nagesh, "Energy Storage in Marx generator and Tesla trans-formers", ibid.

R.S. Kalghatgi. Energy Storage for particle beams . ibid

PH Ron Pulse diagnostics for voltage and current", ibid

PH. Ron. "Grounding and shielding for pulsed low level electricalsignals", ibid.

K.V Nagesh. ST. Iyyengar. J.A. Gokhale. R.S. Kalghatgi. P.H Ronand V.K. Rohatgi. "Fast response current, voltage and magneticfield diagnostics", Proceedings Workshop on Plasma Diagnostics,Centre for Advanced Technology. Indore. Ian. 1986.

AS Paithankar. P. Roy Choudhury, AC Saxena and V.K Rohatgi."Characterisation of target plasma required for REB-plasmainteraction studies". APS Bulletin. 31. No. 9. 1475. 1986.

T Vijayan. S K Iyyengar and V.K. Rohatgi. "Collective accelerationof ions using multiple injection in REB". ibid. 31. No. 9. 1464,1986.

S K. Iyyengar and V.K. Rohatgi. "Current neutralisation and chargetransport of a REB in low pressure Argon". IEEE Trans. PS 14.No 3. 277. 1986.

T Vijayan. S.K. iyyengar and V.K. Rohatgi. "Collective accelerationof heavy ions using REB". JPA Workshop Cum Seminar onNuclear Instrumentation for Heavy Ion Laboratories, Bombay.May 1986.

S.K. Iyyengar. G. Venugopala Rao. K.C. Mittal and V.K Rohatgi.•Diagnostics for intense pulsed particle beams", Workshop onPlasma Diagnostics at CAT. Indore. Jan. 1986

A C Saxena. A S. Paithankar and V.K Rohatgi. "Microwave interfero-metry for electron density measurements in plasmas", ibid

16

BARCANNLAL REPORT

1986-87

A S Paithankar. P Roy Choudhury and V.K. Rohatgi. 'Characterisa-tion of flowing plasma produced by coaxial plasma gun usingLangmuir probe", ibid

KC. Mittal. ' Gigawart pulsed relativistic electron beam generationstudies in vacuum and gas filled diodes". Ph D thesis. BombayUniversity. Dec 1986

V C Deniz. The Theory of Neutron Leakage in Reactor Lattices".Handbook of Nuclear Reactor Calculations. Vol. II. CRC Press.Inc. 1986.

S.S Joshi. K K. Arora. and fl.V. Koparde. "Applications of NeutronNoise Analysis made at Tarapur Atomic Power Station (BWR) forCore Internal Vibrations". Symposium on Vibration of PowerPlant Equipment. BARC. March 1986

S.L Mehta, AH. Mistry. C.S. GopaJakrishnan. and L.R. Ramaswamy."Micro-processor Based Scanner for Scanning of Reactor Shields".Symposium on "Indigenous Nuclear Equipment". BARC. Feb.1987.

G.S. Agarwal and R.R. Puri, "Exact Quantum ElectrodynamicaJResults for Scattering. Emission and Absorption from a RydbergAtom in a Cavity with Arbitrary Q". Phys. Rev. A 33, 1757. 1986.

R.R. Puri and G.S. Agarwal, "Collapse and Revival Phenomena in theJaynes-Cummings Model with Cavity Damping". Phys. Rev. A 33.3610. 1986.

S.V. Lawande, R.R. Puri and R. D'Souza, "Optical Double ResonanceSpectra and Intensity-intensity Correlations under Finite Bandwidth :Some Analytical Results. Phys. Rev. A 33. 2504. 1986.

S.V Lawande.DC. Khandekar, K.V.BhagwatandB.N. Jagtap, "ExactAnalysis of the Critical Behaviour in the Driven Dicke Model ofInteracting Atoms", Physcia 134A. 598. 1986.

DC. Khandekar and S.V. Lawande, "Feynman Path Integrals : SomeExact Results and Applications, Phys. Reports 137, 115, 1986.

A.K. Dhara and S.V. Lawande, "Time-dependent Invariants andQuantum Mechanics in Two Dimensions. I. Math. Phys. 27, 1331,1986.

DC. Khandekar. V.A. Singh. K.V. Bhagwat and S.V. Lawande."Functional. Integral Approach to Posirionally Disordered Systems"Phys. Rev. B 33. 5482, 1986.

•M.K. Srivastava and S.V. Lawande, "The Rarefaction Effect duringCoalscence of Converging shocks in a Laser-driven Fusion".Atomkernenergie 48. 45. 1986.

N.K. Gupta and S.V. Lawande. "Effects of Density Gradients onRayleigh-Taylor Instability in an Ablatively Accelerated InertialConfinement Fusion Target", Plasma Phys. & Controlled Fusion,28. 267, 1986.

N.K. Gupta and S.V. Lawande. "Rayleigh-Taylor Instability in SphericalGeometry". Phys. Rev. A 33. 2813. 1986.

N.K. Gupta and S.V Lawande. "Rayleigh-Taylor Instability in Multisti uctured Spherical Targets". Plasma Phys & Controlled Fusion.28.925. 1986

S VG. Menon. Vinod Kumar and DC. Sahni. "Green's FunctionApproach to the Solution of the Time Dependent Fokker-PlanckEquation with Absorbing Boundary". Physica 135A. 79. 1986

Ashok Kumar and MR Gunye. "MicroscopicStructure Calculationsin Ru. Pd and Cd Nuclei". Journal of Physics G12. 85. 1986

V.K. Jain and HP. Gupta. "Analysis of Super Delayed-Crincal Transients in Thermal Reactors Using 2D and 3-D Adiabatic andImproved Quasistatic Models". Ann. Nucl Energy 13.115. 1986.

HP. Gupta and M.S. Trasi. "Asymptotically Stable Solutions of Point-Reactor Kinetics Equations in the Presence of Newtonian Tempera-ture Feedback", ibid 13. 203. 1986

S.R. Swivedi and H.C. Gupta. "Biasing Parameter Limits for SynergisticMonte Carlo in Deep Penetration Calculations". Nucl. Sci. & Engg.92. 545. 1986.

Subhash Chandra. "The Influence of Particle Phase Size on theDisassembly Accident Transient in Fast Reactors". NuclearSafety 74. 189. 1986.

S.K. Arora. and T.K. Basu. "A seismic event on August 20.1983 : doubleexplosion or a single earthquake". Phys. Earth Planet. Inter.40(4), 309. 1985.

T.K. Basu and S.K. Arora. "Complexity-TMF patterns of presumednuclear explosions in USSR as an aid to source discrimination",BARCJ-846. 1985.

T.K. Basu and S.K. Arora. "Characteristics of Core reflected P wavesfrom known and presumed explosions in Soviet Russia. BARC I-860. 1986.

A.R. Banghar, "Synthesis of Seismograms for earthquakes a paperpresented at a Seminar on Emerging trends in theoretical seis-mology held at Calcutta University" March 1985.

Falguni Roy, "Source depth Estimation by Prediction Error. Filteringof Synthetic Explosion signals". BARC-1337. 1986.

Falguni Roy, "Depth of source from Long period P-Waves". BARC-1338. 1986.

Falguni Roy. "Identification of depth phase onsets from somepresumed underground explosion signals using prediction errorfiltering". BAC-1340. 1986.

Falguni Roy. "Detection ot depth phase onsets by prediction errorfiltering of synthetic signals in presence of additive noise afteTprefiltering the noise". BARC-1341. 1986.

Falguni Roy. Studies in forensic seismology with emphasis onsource depth estimation. Ph.D. Thesis, Bombay University. Sept.1986.

17

BARCANNl'AL RKPORT

1986-87

A.R. Banghar. "Seismotectonics of the Andaman-Nicobar islands,Tectonophysics", 133. 1987.

Vijai Kumar, "An instrument for strong ground motion measurements.Conference on Transducers". Delhi. 1985. (BGML)

KR Subbaramu. BSS Rao and R. Krishnamurthy "Establishmentol Surface and underground seismic network and monitoringof Rockburst activity at Kolar Gold Fields 4th Conferenceon accoustic emission/micro seismic activity in Geologiesstructure and activity Pennsylvania State University. 1985

R Krishnamurthy. C, Srinivasan (BGML). S.S Rao. Bora. K.RSubbaramu and A G Kulkami. "Study of stability of undergroundworkings by Seismic Tectonics". 1985.

A.R. Banghar, "Synthesis of Seismograms". VI Indian GeologicalCongress, held at Roorkee during Feb. 21. 1987.

C.L. Bhat. ML. Sapru and H. Razdan. "Estimate from Gulmargof PeVPhoton Flux from Cyg. X-3 and its Relevance". Astrophys. J.. 306.587. 1986.

C.L. Bhat. C.J. Mayer and A.W. Wolfendale. "A New Estimate of theMass of Molecular gas in the Galaxy and its Implications". Trans.Royal Society. 319. 249. 1986.

C.L. Bhat. T. Kifune and A.W. Wolfendale. "Implications of theObservations of PeV gammarays-II. The Production of HighLatitude Compton Photons". Astron, Astrophys.. 159. 299. 1986.

C.L. Bhat. C.J. Mayer. M.J. Rogers and A.W. Wolfendale. "TheAcceleration Cosmic rays in Supernova Remnants-I : Gamma-ray evidence for Cosmic Ray Intensity Variations on the Scale of0 1-3 kpc". J. Phys. G. 12. 1067. 1986.

C.L. Bhat. C.J. Mayer. M.J. Rogers. A.W. Wolfendale and M. Zan. "TheAcceleration of Cosmic Rays in Supernova Remnants-II : Long-Scale Intensity Variations". J. Phys. G. 12. 1087. 1986.

H. Razdan and R. Koul. "Cosmic Gamma-ray Telescope at Gulmarg".Nuclear India. 25. 2. 1986.

A Mitra. "A Novel Method of Solving for the Orbit of a ClassicalIsotropic Oscillator". European I. Physics, 299. Nov. 1986

A. Mirtra. "The Equation of State of a Self-Gravitating Gas Sphere".Astrophys. & Space Science. 124. 295. 1986.

A Karnal. V Prakash and K.C. Tripathi. "Fuse Replacement byVariable Semiconductor". Electronic Engineering. U.K.. 34. Nov.1986

R Koul. "RC Circuit Detects Phase Sequence Reversal". ElectronicEngineering. U.K.. 38. Feb. 1986

H.S.Vora. M.N. Kumbhare and MM. Bemalkhedkar. "A Novel MainsLow/Normal High Indicator and Trip-off". IETE Tech. Rev. 3(2).60. 1986

L.M. Kukreja. S K Sehgal. U.K. Chatterjee and D.D Bhawalkar. "Obobtaining well defined transverse-mode and turung of a long cw-CO, laser". I Phys D Applied Physics. 426. 19. 1986

L.M. Kukreja. S.K Sehgal. U.K. Chatterjee. B.L Gupta and D.DBhawalkar. "125 Watt longitudinal cw-CO, laser, its tuning andpulsed operation" BARC/I 8^6 1986

L M Kukreja. R K Khardekar and U K Chatterjee "Longitudinal CO,laser operating directly at line vc-JJage with hollow cathode dis-charge Rev Sci Instrum 57. 1989. 1966

SK Sehgal LM Kukreia and UK Chatierjee. "Theoretical Invest!gations on the efficiency ol a longitudinal pulsed CO. laserProc V Svm on Quant Electron 1987

S.K. Sehgal. UK Chatterjee. D.D Bhawalkar and V.B. Joshi. AMBhagwat. "Laser Induced enhancement in sensitivity oJ a poly-meric nuclear track detector CR-39'. Appi Phys. Lett. 42. 181.1986.

L.M Kukreja and Y VST. Sai. "Finite element analysis of thermaidistortions in Ce window for a cwCO, laser with TEM,,,, mode".Proc. V Quant. Electrons Sym. 1987

Vas Dev. U. Nundy. N.S. Shikarkhane. P.K Gupta and U.K. Chatterjee."Thermal Effect of intracavity optical components on the powertuning curve of a cw-C02 laser". Optics Commn Feb 110. 1986

Vas Dev, U. Nundy. D.J. Biswas and U.K. Chatterjee. "Heterodynefrequency stability measurement of a cw-C02 laser". Proc IVQuant. Electronics Symposium. Cochin. Dec. 1986.

D J. Biswas. L Abhinandan. U.K. Chatterjee and U. Nundy.' Operationof UV preionized TEA CO2 laser utilising nonconventonal elect-rodes". J. Phys. E Sci Instrum. 19. 374. 1986.

U. Nundy. N.S. Shikarkhane. and U.K. Chatterjee. "A simple methodfor aligning unstable resonators". Proc. IV Quantum ElectronicsSymposium. Cochin. 51. 1986.

N.S. Shikarkhane. U Nundy. and U.K. Chatterjee. "Thin polyethylenefilm as a window for pulsed CO, lasers". Proc. IV Quantum Elec-tronics Symposium. Cochin. 9. 1986.

P. Deb. U Nundy. and UK. Chatterjee. "Theoretical Modelling ofTransport of electrons through Aluminium foil". Proc. IV QuantumElectronics Symposium, Cochin. 15. 1"986.

R C. Bapna. and R L Verma. "Inspection of glass microballoons forfusion targets by refraction". Nat. Symp Optical and Opto-electronic Instrum. Chandigarh. Sept. 1986.

R.L Verma. R C. Bapana. D.N Joshi and D.D. Bhawalkar. "Fabricationof glass microballoons". Proc. IV Quantum Electronics SympCochin. 130. Dec. 1986.

H.C Bapna and R L. Verma. "A simple technique for estimating wallthickness of glass monitoring", ibid

18

BARCANMAL REPORT

1986-87

L G Nair and K Dasgupta. 'Amplified Spontaneous Emission innarrow band pulsed dye laser oscillators". IEEE J QuantumElectr QE-21. 1782. 1985

R C Khatlar. S L Makker. U C Bhartiya. "GaAs laser data communicator". Proc IV Quantum Electronics Symp Cochin. 134. Dec1986

Sucluinta Sinha and Prndec ^ K Gupta. "Longitudinal mode selectionin hybrid CO, laser for sub threshold operation of cw dischargesection". Applied Phys Letters. 17 Nov 1986.

Suchanta Sinha and Pradeep K. Gupta. "Parametric investigations ofa hybrid CO,, laser". Proc IV Qjantum Electronics Symposium.Dec 1986

PK. Gupta. Suchanta Dutta. V.P. Singhal. N.S Shikarkhane. S.Sasikumar. U Nundy and U.K. Chatterjee. " 16 urn CF, laser withpulse energies of upto 20 mJ". Proc. IV Quantum ElectronicsSymposium. Dec 1986.

Selvakumar V. Nair. Sucharita Sinha and K.C. Rustagi. "Excitons inspherical semiconductor microcrystals". Proceedings of SolidState Physics Symposium. 248. 1986.

J S Uppal. J.C. Monga and D.D. Bhawalkar, "Performance of a genralasymmetric unstable Nd : glass ring laser", Applied Optics, 25,

J.S. Uppal. J.C. Monga and D.D. Bhawalkar, "Analysis of an unstableconfocal ring laser with a thermally induced active medium".Applied Optics 25, March 1986.

T.P.S. Nathan. S.M. Oak. AS. Joshi and D.D. Bhawalkar. "Generationof Modulation-free pulses using an active Fabry-Perot'OpticsCommun . 57. 71. Feb. 1986.

T.P.S. Nathan. "Near IR Lasers". ISRAPS Symposium. BARC. Dec. 1986.

J.C. Monga. "Design of Antireflection coatings for grazing incidenceangles", Proc. IV Symposium on Quantum Electronics, CochinDec. 1986

J.C. Monga and J S. Uppal. "Birefringence compensation in a polari-zation flip Nd glass laser", ibid.

S.M. Oak. T.P.S. Nathan and D.D. Bhawalkar. "Relaxation spikes in aNd . YAG laser with active Etalon", ibid.

S M Oak and T.P.S Nathan "Self seeding in a Q-switched YAGlaser", ibid

N. Gopi. T.P.S. Nathan and B.K Sinha. "Temporal study of thermaldepolarization in a pulsed solid state laser", ibid.

S. Singh. S.M Oak and D.D Bhawalkar. "Development of picosecondstreak camera". Proc IV Quantum Electronics Symposium, 157Cochin Dec. 1386.

Sunita Singh. B.S Narayan. R.K. Khardekar and D.D. Bhawalkar."Electronic sweep drivers for streak camera", ibid. 159. 1986.

Sunita Singh. "Short pulse generation from a flashlamp-pumpedRh6G ring dye laser using the colliding pulse mode lockingtechnique". Applied Optics. 26. Jan. 1987.

L J Dhareshwar. PA Naik and H C. Pant. "Enhancement of ablationsmoothing in laser irradiated high Z coated thin foil targetsPramana 27. Sept 435 1986

TS Shirsat. SS Sharma and H C Pant. ' CaJonmetnc study of laserirradiated thin foil targets" PRAMANA 27. 701. Nov 19B6

PK Gupta, (a) "Lasers and their relevance to photochemistry"(b) "Mid Infrared lasers". Workshop on "Current trends in expen

mental technique in photo and radiation chemistry". Bombay,Dec 1986 (Invited ta'.)

K.C Rustagi. "Optical bistabilrty and Optical Phase Conjugation".Winter School in Engineering Optics. DT Kanpur. Nov 1986.(Invited talk)

G L Bnale. ST. Ahmad and S.P Reddy. "A study of variation ofelectronic transition moment of the B-X system of I2 from its laserexcited fluorescence spectrum". J. Phys. B. At Mol Phys. 18.545.1985.

LC Chandola and P.P Khanna, "Determinatioon oi rare earthimpurities in ytterbium oxide by X-ray fluorescence spectro-metry". Microchimica Acta (Wien) HI. 191. 1985.

K S.V. Nambi and A.V. Sankaran. "ESR dating of Laterite of Basalticorigin". ESR dating and dosimetry Ionics Tokyo. 175. 1985

S A. Ahmad. "Laser Spectroscopy of short-lived isotopes". Ind. JPhys. 60B. 255. 1986.

K.V.S.R. Apparao. "Dielectric mirrors for high power laser applica-tions". Bull Mat. Sci 8. 339. 1986.

K.VS.R. Apparao. N K. Sahoo and T.C. Bagchi, "Design and develop-ment of thin films dielectric beam combiner". Bull. Mater Sci. 8.343. 1986.

K.V.S.R. Apparao and T.C. Bagchi. "Optical constants in theultraviolet region of evaporated high index films'. Bull. Mater Sci.8. 347. 1986.

K.V.S.R. Apparao. N K Sahoo and T.C. Bagchi. "Optical constants ofZrO, films in the U.V. region". Ind. J. Phys GOA. 216. 1986

T.K. Balasubramanian and V.P. Bellary. "Rotational intensity factorsfor ' I - *I transition in diatomic molecules with "I displayingHund's case C tendency". Ind. J. Phys. 60B. 358. 1986.

LC Chandola and P.P. Khanna. "X-ray fluorescence analysis ofthulium oxide/oxalate for rare earth impurities". BARC-1304.1986

LC Chandola and V.S Dixit. "Optical emission spectrographicanalysis of Lutetium Oxide for rare earth impurities". BARC-1329. 1986

B.M. Dixit and S.S Deshpande. "Determination of Ti. Cr. Cu. and Ta inNiobium oxide by X-rav Fluroescence Method". BARC-1310.

V.A Job. SB Kartha. VB. Kartha and KB. Thakur. "Rotationalanalysis of the band of NH2D". J. Mol. Spectrosc. 120. 1986

19

BARC\ \ \ l M. KI.POK!

1986-87

V B Kartha. V.A. Job and P.K Chakraborty. "Applications of highresolution diode laser spectroscopy". J. Ind. Chem. Soc. 63. 22.1986

SLNG. Knshnamachari and R Venkatasubramaman. "Absorptionspectra of CCSH and CCSD radicals". Ind. J. Phys. 60B. 37. 1986

SL.N.u Knshnamachari and R. Venkatasubramanian. "Electronicabsorption spectra of HNC and DNC". Spectrarosc Letts. 19, 53.1986

MVRK. Murty and R.P. Shukla. "A simple method of detectingvibration on platform used for optical experiments". Ind. I Pureand Appl. Phys 24, 252. 1986.

PS Murty and M Barnes , "Determination of trace rare earthelements in uranium by-inductively coupled plasma AtomicEmission Spectrometry". J. Anal. Atomic Spectr. 1 (2). 149. 1986.

A Sharma. M.N Dixit and G.L. Bhale. "Relative photodissociationcross section of NaCs Moleculer using argon ion laser lines".Pramana 27, (5). 695. 1986.

S.D. Sharma. A.K. Ray and G.D. Saksena. "Constant energy differencetwo photon photo excitation of excited states". Chem. Phys.Letters 127. 319. 1986.

M. Singh. B.M. Suri. R. Kapoor. G.D. Saksena and P.R.K. Rao."Rotational structure in XeCl laser bands at 308 nm", Spectrosc.Letts. 19 (3). 249. 1986.

S. Urban. R. DCunha, J. Manheium and K. Narahari Rao. "High 'J1

transitions in the ,-2 bands of IJNH, and ' 5NH3", J. Mol. Spectrosc.118. 298. 1986.

K. Wendt. S.A. Ahmed, W. Klempt. R. Neugart, E.W. Often and H.H.Stroke. "On the hyperfine structure and isotope shift of radium".Z. Physik D3. 1. 1986.

K.V.S.R Apparao. "Design of Optical thin film coatings TopicalReview of thin Film Instrumentation and Devices S.V. University.Tirupati, (Invited talk) Aug. 1986.

R D Cunha. Investigations o! hot band transitions in Ammonia IXInternational Conference on High Resolution 1R SpectroscopyLiblice. Czeckoslovakia. (Invited talk). Sept 1986

PS Murty. "Separation ol some trace metals from high puritymagnesium using a chelating resin and iheir determination byICP AES . National Symp on Separation technique w;'h SaK-llitesump on Solvent Extraction and Ion Exchange Walta.r Ian1986

S.A. Ahmad. Pushpaa M Rao A Venugopal and G D Saksena"Evaluation of mean square nuclear charge radii o) stableisotopes of erbium". Int Conf on Hyperfine interactions. Bangalore.Sept. 1986

S.A. Ahmad. Pushpa M Rao and GD Saksena "Crossed secondorder field shift in T and "F terms of 4f" ("F) 6S configuration ofSm ' ". VI National Workshop on Atomic and Molecular PhysicsVaranasi. 1986.

V.P. Bellary and T.K Balasubramanian. "Collisional effects in oxygenafter glow; selective quenching of odd rotational levels in thea' ,. state". VI National Workshop on Atomic and MolecularPhysics. Varanasi. Dec 1986.

G.L. Bhale. MAN Dixit. MAN. Razvi and A Sharma. Laser inducedphotodissociation of NaRb molecule". VI National Workshop onAtomic & Mol. Physics, Varanasi. Dec. 1986

N.K. Sahoo and K.V S.R Apparao. "Measurement of Optical losses inthin films using a new laser calorim.eter". IV Symposium onQuantum Electronics. Cochin. Dec. 1986

R.M. Agrawal and P.P Khanna. "X-ray fluorescence analysis of rareearths All India two day Science Symp. in Hindi. NuclearSciences and Technology • Teaching and Research". Bombay,Dec. 1986.

L C. Cnandola and M.D Saksena. "Modem Spectroscopic methodsof trace analysis of nuclear materials", ibid.

20

2. CHEMICAL SCIENCES

BARCANNUAL REPORT

1986-87

2-1 Basic Chemistry

The activities were basically directed towardsfundamental research which included thrust areas ofradiation and photochemistry, laser chemistry reactiondynamics, isotope effects, interfacial phenomena, stru-ctural chemistry and materials science. Applied resea-rch and development work on reactor-oriented progra-mmes, high technology materials, catalyst develop-ment etc., essentially centered on development of newprocesses and products were also carried out. TheNanosecond Pulsed Electron Accelerator has beencommissioned. A 100 Nanosecond Pulsed TEA CO,,laser has been fully commissioned and integrated withthe Excimer Laser Kinetic Spectrometer.

Development of a series of materials which aresuperconducting at relatively higher temperatureswere successfully carried out. An yttrium based oxide,Y, , Ba,, K CaO4, was found to be superconducting at125 K and showed zero electrical resistance at about90 K. Studies carried out have also indicated that thismaterial displays 50% Meissner effect, which meansthat superconductivity in this material is not a super-ficial SKin effect but more or less a bulk property.

For the first time direct evidence has been obtainedfor the formation of CF2 radicals in the CO2 laserinduced multiphoton dissociation of fluoroform and anovel sigmatropic reaction was observed in the CO2laser induced dissociation of perfluorcyclopentane.

New chemiluminescent reactions between sama-rium and sulphur hexafluoride, and samarium andcarbon tetrachloride have been observed in molecularbeam experiments. A theoretical model involving theformation of micellar chain formation has been propo-sed to explain the viscoelastic behaviour of surfactantsolutions and it has been substantiated by detailedNuclear Magnetic Resonance (NMR) and fluorescencelife time investigations. Mossbauer studies have led toa better understanding of the roles of excess of tita-nium and oxygenstabilised ternary Fe-Ti phases in theactivation of the hydrogen storage material Fe-Ti. Anew and simple approach has been proposed to findthe hydrogen diffusion activation energy in metalsusing Mossbauer Spectroscopy.

Analytical Services were provided for variousother units and outside agencies. The technologydeveloped for the manufacture of bilirubin strips forthe early detection of jaundice is being widely Utilisedby manufacturers.

A laboratory scale process developed early isbeing tested in plant operating conditions at RAPS-2 toremove toxic and reactive nitrogen oxide gases gene-rated in the calandria vault area surrounding thereactor core, and it has shown encouraging results.Test runs have proved that the new hydrophobiccatalyst developed for deuterium exchange in liquidwater is suitable for continuous operation. A methodfor the preparation of aluminium nitride, the targetmaterial for making carbon-14 by neutron irradiation,has been standardised. CaSO^-(Dy) phosphor requiredfor the manufacture of TLD radiation dose measurementbadges was manufactured in sufficient quantities.

New research and development programmes sta-rted during the year include pulse radiolysis studies,investigation of physical phenomena associated withnarrow band formation in uranium-transition metalintermetallics, synthesis and single crystal growth ofmaterials for laser windows and synthesis of boronnitride, a high technology material.

2-2 Water Chemistry

Basic and applied research and developmentactivities pertaining to research and power reactorsand heavy water plants were continued to be carriedout. A weak acid cation exchange resin loaded withMg/Mg (OH)2 was effectively used to remove aluminiumturbidity and associated uranium and radioactivityfrom the heavy water coolant moderator of Dhruvareactor. The resin was specifically developed andmanufactured indigenously for this purpose.

Studies pertaining to the Task Force on Safety inIndian Nuclear Power Reactors was conducted. Theareas reviewed included the generation of hydrogenthrough metal-water reactions and radiolysis, the comb-ustion of hydrogen, and the influence of hydrogencontent of the steam on chemical speciation of theradionuclides released to the vapour phase were

21

BARCAWl/AL REPORT

1986-87

reviewed over the temperature range of 50CTC to2800C.

Chemical decontamination of some of the systemsurfaces in MAPS-2 and of the hot spots on fueltransport system were carried out using speciallydeveloped chemical formulations and significant re-duction in the radiation field could be obtained Chemi-caJ cleaning procedures were also developed to removethe scales in the heat exchangers of the Heavy WaterPlant. Kota

Other salient research problems tackled includedexperimentation on the relationship between chlorinedose, residual chlorine and the reaction time, anddetection of halomine species in the chlorinated seawater Water and Steam Chemistry Laboratory. Kalpa-kkam continued studies on sea water characteristics,marine fouling rates at MAPP Jetty, on water qualityat MAPP open reservoir and for FBTR cooling tower.To carry out activity transport measurements aroundthe PHT system of MAPS-I. a rig was designed forcalibrating the detector efficiency The rig will simu-late pipe surfaces of MAPS-I PHT system by using astandardised point source. Investigation on morpholinebased ion exchange resins required for condensalepolishing at MAPS were completed.

Thermal studies of mixed (La. Nd)CrO,and phasetransition studies of solid solutions of La. ,Nd, CiO.of varying composition were carried out under chilerent conditions. Fluorine-19 NMR ot ammonium oxy-flurovanadates in solution was studied to determinetheir structures. Scanning Electron Microscope (SEM)studies of sulphide coated carbon steel were alsocarried out to find the species formed with differenttime of exposure to sulphide environment. Mass tran-sport studies of cobalt-60. nickel 60 and copper-64 inIncoloy-800 have been carried out in different tempe-rature ranges and the diffusion coefficients wereevaluated.

Instrumental analytical facilities were augmentedand analytical services were provided to various unitsusing TG. DTA. DSC and XRD techniques. Advisoryservices were rendered to Central Board of Irrigationand Power and National Fertilizers Corporation on

problems related to process and cooling water systems

2-3 Fuel Chemistry

Basic investigations on acrinide and fission productsystems and applied chemical work related to nuclearfuel cycle were continued.

A programme has been undertaken to investigatethe chemistry of carbide fuels. The equilibrium carbonmonoxide pressures over UC, s,, • UC, ,0, phasefield have been measured in the temperature range1800 to 2000K. Studies were earned out for themeasurement of free energy of formation of Ni/re. • Niusing a solid state e.m f. technique to evaluate themechanism of stainless steel clad embrirtlement causedby the fission product, tellurium. Free energy offormation of NaCrO,, a corrosion product of Na(l)interaction with steel has been determined using thesame technique in the phase fieldNaCrO Na CrO, • Cr,0,.

Studies have shown that a macroporous resin.Amberlite XF, 270 has many advantages over theconventional gel type resin for the recovery and puri-fication of plutonium and it was used for the recoveryand recycling of Pu during the plutonium fuel fabrica-tion campaigns.

The need for importing enriched plutonium isotopeslor routine analysis of Pu was obviated by developinga method making use of indigenously available 70-90'!,, enriched Pu-239. Analytical methods based onalpha spectrometry. spark source mass spectrometry.atomic emission spectrometry, controlled potentialcoulometry and amperometry were developed andstandardised for the quick and accurate analysis ofuranium, plutonium. americium. curium, trace metallic,non metallic and gaseous impurities in nuclear mate-rials and fuels

Studies on reaction of U,OS with (NHJ,S0., at250 C suggest that the chemical formula of U.;OS

should be U'*UU.C\ Oxides of actinides and lanthani-des have been observed to catalyse the oxidation of

22

BARCANNUAL REPORT

1986-87

graphite in the order U,OS ThO, PuO, • • La,O3 =Nd 0,. Extensive catalysis by ThO,, indicate that redu-ction - oxidation may not be only mechanism for thiscatalysis

The expertise generated during post-irradiationstudies on nuclear fuels for rare earth isotopic andconcentration measurements has been used for thedetermination of l4 Sm and '-'•'Nd isotopes in graniterocks which is useful in geochronology

An engineering scale semi-continuous facility forthe preparation of uranium dioxide microspheres bysol-gel process on 500g/scale was operated to obtaindesign parameters for a smililar facility for plutoniumwork A sol gel microspheres pelletisation route forfuel fabrication is being developed. Preliminary resultsbased on dispersion of carbon at the gel formationstage and its removal in a subsequent calcinationstage gavo soft gel particles which could be readilypelletised Uranium-233 metal has been prepared tofabricate alloy fuel elements for KAMINI reactor.

2-4 Radiochemistry

Nuclear and chemical properties of actinides andfission products were extensively investigated. Neutroninduced fission of Pu-241 and alpha particle inducedfission of U-238 were studied to understand the rela-tionship between excitation energy and fragment angu-lar momentum Measurement of isomeric cross-sectionratio in alpha-induced nuclear reaction on Au-197showed the occurrence of pre-equilibnum multinu-cleon emission. Charge-transfer studies on molecularcomplexes using positronium as a probe gave impor-tant information about the charge-transferring electronand the mode of quenching of positronium in organic-solvent I system Perturbed angular correlation studiesshowed the existence of larger than tetrameric form ofhafnium at low acidity

Studies were carried out on the synergistieextraction of uranium, amencumi. curium and californiumwith various beta dikcioncs and crown ethers and the

nature of extracted species and equilibrium constantswere determined. Complexation of actinides with ligandsof environmental importance and complexation andhydrolysis of Americium (Am (III)) were studied in pre-sence of phosphate, acetate and tartrate over a widerange of pH. Electron paramagnetic resonance studiescarried out on americium doped barium carbonateand divalent americium was detected.

2-5 Analytical Chemistry

A project on "Advanced Instrumental AnalyticalChemical Services with a prototype facility for UltraTrace Analysis (UTAL)" was completed in two yearsusing indigenous materials and technology. This is aunique facility now operational in India with contro-lled clean environment for ultra trace analysis,-.theparticle density (;,- 0-5 /< diameter) at sample handlingsite is 100/cu.ft. compared to a density of • 10G/cu.ft in a normal laboratory environment. New andimproved.analytical methods were developed for deter-mination of zirconium in steels and monazite; aluminiumin Al Ni alloy: tungsten in low grade ores: vanadiumin ferrovanadium: silver and tellurium in silvertelluride: traces of impurities in high purity silver andlithium and plant growth regulators after HPLCseparation

A systematic investigation on the effect of conditionsof precipitation of ammonium diuranate on the qualityand consistency of the precipitate, along with othercharacteristics including thermal behaviour, was earnedout. The results and recommendations have beencommunicated to the end user who is making thenecessary modifications in the plant operation basedon these studies. Consultancy services were providedfor the modification of a normal laboratory area forreceipt of irradiated sampies and for radiation measu-rement and also in the procurement and commissioningof high resolution ladiation measurement systems forneutron activation analysis at the Pune unit of Geological Survey of India The first phase of the collabora-tive work with Department of Environment on quality

23

BARCANNUAL REPORT

1986-87

assurance of environmental elemental analysis was of DAE and to outside Institutions like Council ofcompleted. Scientific and Industrial Research, Geological Survey of

India, Defence Science Centre, Physical ResearchAbout 2,000 samples were analysed involving Laboratory, Vikram Sarabhai Space Centre, Air India,

more than 6000 determinations. Special analytical M/s. Brooke Bond India Ltd. (on the advice of Directo-senrices were also provided to various constitute units rate of Marketing and Inspection) etc.

24

Publications

BARCANNUAL REPORT

1986-87

C. Gopjiiathan and S. Kapoor. "Hydrogen peroxide yields in methanol-wafer mixtures.irradiated at room temperature and at 77K", J.Radioanal. and Nucl. Chem. 98, 105, 1986.

R D Saini and P.K. Bhattacharyya, "Flash Photolytic investigation onthe reaction between Pu (IV) and CO , in alkaline medium".Radiat. Phys. Chem 27. 189. 1986.

T. Mukherjee and J.P. Mittal. "Energy transfer from benzene to somearomatic hydrocarbons and their perfluorinated analogues'.Indian J. Chem.. 24A. 1008. 1985.

D.D. Bhawalkar, U.K. Chatterjee, J.P. Mittal, U. Nundy. V. Parthasarathy.K.V.S Rama Rao. S.K. Sarkar. N.S. Shikarkhane and A.A. Puretzky**IR MPD of CDF3 in two frequency IR fields. Laser chemistry, 6.

85. 1986. "*Inst. Spectroscopy Moscow

T. Mukherjee, K.N. Rao and Jai P. Mittal, "Photophysical and photo-chemical characteriztics of two heterocyclic dyes; possible laserapplications", Ind. J. Cnemistry. 25A, 509, 1986.

P.K Chowdhury. K.V5. Rama Rao and Jai P. Mittal". Infrared mulu-photon induced concerted : CF2 elimination in octafluorocyclo-pcntene . J. Phy. Chem. 90. 2877. 1986.

S K Sarkar. V. Parthasarathy. K.V.S. Rama Rao and Jai P. Mittal. IRmultiphoton excitation in CDF, probed by pulsed opoacoustictechnique. J. Photochemistry. 35. 13. 1986.

D K. Palit. T. Mukherjee and Jai P Mittal. "Photophysics and Laserflash photolysis of hydroxy quinones : studies on Juglone andNaphthazarine", J. Ind Chem. Soc. LXIII. 35. 1986.

S. Kapoor and C. Gopinathan. "Electron scavenging by solvents inethylene glycol-water", Radiat. Phys. Chem. 27, 199, 1986.

Manohar Lai. Jorg Monig*. and K.D. Asmus*. "Free radical induceddegradation of 1.2. Dibromoethane: generation of free Br atoms".Free Radical Res Comms.. 1. 235, 1986. *Hahn-Meitner Inst.,Berlin, W. Ger.

S. Dhanya, R.D. Saini and P.K. Bhattacharyya. "Reaction of electro-nically excited benzene molecule with nitrate ion". Chem. Phys.lett. 127,93, 1986.

L.V. Shastri. Lalitha J. Mittal and Jai P. Mittal. "Radiation chemicalseparation of europium from aqueous lanthanide mixtures". RadiatPhys and Chem 28, (4). 359. 1986

Lalitha J. Mittal and Jai P. Mittal. "Site of attack in the interaction ofhydrated electrons and hydroxy radicals in the pulse radiclysisof aryl alkylamines in aqueous solutions". Radiat Phys. andChem 28. (4). 363, 1986.

Sandhya Bhakay Tamhane. C. Karunakaran and S.N Vaidya. "Criticalpoint in the phase diagram of LiKSO4" High temperatures-highpressures. 18. 1986.

C.G.S. Pillai and A.M. George, "Thermal conductivity of La^CuO,,La2Ni04 and Nd2Ni04 in the semiconducting and metallic phases".Intl. J Thermophys.. 7. 1091. 1986

C.G.S. Pillai. M.D. Mathews, A.C. Momin and A.M. George. "Electricalconductivity of strontium uranates", J. Nucl. Mater.. 140, 285.1986.

S.K. Kulshreshtha. "Cation distribution and canted spin alignment inNiFeAlO,". J. Mat. Science Letters, 5, 638, 1986.

M.S. Gill, "Vapour pressure of bis-(l,l,1.5.5,5-hexafluoro-2, 4 pentane-dionato) dioxo uranium tetrahydrofuran'. Thermo Chimica Acta99, 87. 1986.

Vijay P. Oze 'and K.S. Bhakti, "Formation constants of adducts ofsome zink oxinate chelates with nitrogen bases, Indian J. Chem.,25A. 199, 1986.

K.S. Bhatki and V.P. Oze, "Adduct formation between zinc oxinateand some heterocyclic nitrogen bases : A Spectrophotornetricstudy", Indian J. Chem, 25A, 748, 1986.

S.C Jain, M.S. Gill and G S. Rao, "Coordination compounds ofuranium (IV) and dioxouranium (VI) with nitrogen containingheterocyclic ligands". J. Indian. Chem. Soc. 63. 195. 1986.

V.S Sagoria. M.S. Gill, S.C. Jain, H.S. Ahuja and G.S. Rao, "Volatilecompounds of /f-diketonates of dioxouranium (VI) with tetrahy-dropyran and tetrahydrothiophene", Inorg, Chim. Acta & 121,233. 1986.

R Visalakshi, V.K. Jain, S.K. Kulshreshtha and G.S. Rao, "Studies onsome diorganotin (IV) complexes of Bis-and Trispyrazolyl andBis-pyridyl Methanes and pyridyl pyrazoles", Inorganica ChimicaActa, 118, 119, 1986.

Hari Mohan and A.J. Singh, "Zone refined Tetraphenyl germane,Indian J. Chem. 25A, 587, 1986.

D.B. Naik, S.N. Guha, K. Kishore. P.N. Moorthy, R.M. Iyer and K.N.Rao. "A pulse radiolysis set up for time resolved studies inRadiation Chemistry", DAE Symp. on Radiochemistry and Radia-tion Chemistry. Tirupati, 1986.

K.I. Priyadarshini. D.B. Naik, P.M. Moorthy and R.M. Iyer, "Pulsedelectron beam induced light emission from Dye Solutions", ibid.

S N Guha. D B. Naik. K. Kishore. P.N. Moorthy and K.N. Rao. "Pulseradiolysis study of Redox Reactions of Thionine in Aqueoussolutions". ibid.

S Kappor. M. Kumar. M.S. Panajkar. V.G. Thomas, SB. Srivastava,C Gopinathan. M.H Rao and P.N. Moorthy. "Determination of OHradical Rate constants by competition Kinetics Employing thepulse radiolysis technique", ibid.

K Kishore and P.N. Moorthy, "Dosimetry of Pulsed Radiation fromElectron Linear Accelerator", ibid

M Kumar and M.H Rao. "Role of Electron andd Anion Scavengerson the Radiation PPolymerisation of Cyclohexyl Methacrylate"ibid.

M Lai. "Free Bromine Atom and Free Radical Reactions in theRadiolysis of 1. 2 Dibromoethane in Air Free Aqueous Solutions"ibid.

25

BARCANNl'AL RKPORi

1986-87

M Lai and H.S. Mahal, "Free Radical Induced Degradation ofBromoform (BF) in Air Free and Aerated Aqueous solutionscontaining O 1M t butanol'.ibid.

S Kapoor. C. Gopinathan and RM. Iyer. "Electron Scavenging inmethanol. isopropanol glass at 77K in presence of benzylchloride",ibid

L C T Shout and J P Mittal. "Conductivity studies on the transientsproduced in the , radiolysis of perfluorobenzene in glassymatrices", ibid.

K D. Saim and P K Bhattacharyya. "Studies on the oxidation of U(IV)sulphate by High LET radiation", ibid

C Gopinathan. "Radiation Chemistry and Biomedicines'. ibid.

P K Chowdhury. K VS. Rama Rao and J P Mittal. "Direct observation of retro Diels-Alder reaction product in the IR multiphotonexcited decafluorocyclohexene'. Int. Conf on Chem. of IR LasersCzechoslovakia. Sept. 1986.

P.K. Chowdhury. K.V S Rama Rao and JP Mittal. "Infrared inulliphoton dissociation of decafluorocyclopentene in a concertedsigmatropic pathway". 23rd Ann Conf of Chem AnnamalaiUniv Dec 1986.

S Dhanya. R D. S.iini and P K Bhattacharyya. "Laser Flash Photolysis ol 2 2 Bipyndine in solution". IVth Quantum ElectronicsSymp . Cochin. 1986 ibid

K Indira Priyadarsini J.T. Kunjappu and P.N. Moorthy. "Synthesis,purification and characterisation of some 7-Ammo CoumaimLaser Dyes . ibid

K K Pushpa Deoki Nandan and R.M Iyer. "A study ol Perfluorosulfonale Ion Exchanger (Nation 117) Membrane Water Systems at298K . 23rd Annual Convention of Chemists. Annamalai Univ..Dec 1986

RA Singh. AV S.ipre. SR Dharwadkar and K.V.S. Rama Rao.Preparation and characterisation of uranyl compounds withsurfactants". Vlth Conf. of Indian Council of Chemists. Dec. 1986

P N Moorthy and K N. Rao. "Electrochemical studies in surfactantsolutions". Vlth International Symp on Surfactants Solution NewDelhi . Aug 1986

C Manohar. V K Kolkar, BS Valauhkar. RM Iyei. U R.K Rao andN.C. Verma. "Specificity Effects in the viscoelasticity of dilutesurfactant solutions Proceedings of 6th Internationa) Symposiumon surfactants m solution. Delhi, Aug 1986

N M Gupta. Krishna Mishra and RM Iyer. Deuterium exchangebetween hydrogen and water over hydrophobic catalyst surface".Hindi Seminar on Nuclear and Industrial Science Teaching andResearch. BARC. Dec. 1986

VS. Kamble. N M Gupta and RM Iyer. "CO adsorption on supportedRu catalysts Hindi Seminar on Nuclear and Industrial ScienceTeaching and Research. BARC. Dec 1986

A.M. George. "A combustible Solid Seed to boost the efficiency ofopen cycle MHD generator". IX Intl Conf MHD Electrical Pov/erGeneration Tsukuba. (Japan). Nov. 1986.

P. Raj. A. Sathyamoorthy and IK. Rao. "Structure of (Fe, ,MJ-(B, ,Si,) metallic glasses [M - Co. Ni x - 0 or 20 Y - 0 or 10]using Mossbauer hyperfine parameter correlations". Int. Conf.on Metallic and Semi conducting glasses Hyderabad. Dec. 1986.

IK Gopalakrishnan. J.V Yakhmi and R.M. Iyer, "Electrical resistivityof chevrel phase compounds Cu;. .Ni.MOeS,,. DAE Solid StatePhysics Symp , Pantnagar. Dec. 1986.

K. Usha Deniz. J.V. Yakhmi. PS. Parvathanathan and A.V. Patankar."S, N transitions in S^, , BABA : evidence of mixed dimer formation". DAE Solid State Physics Symp.. Pantanagar. Dec. 1986

S K. Kulshreshtha. "Magnetically induced guadrupole interactionsand anisotropic hyperfine fields for Fe,, BM,, .Sn (M - re. Co amdMn)". ibid

R. Chakravarthy. S K. Paranjpe. S.K. Kulshreshtha and L MadhavRao. "Magnetic structure of Fe,, HM,, ,Sn (M - Mn. Co) . ibid

J V Yakhmi. I K. Gopalkrishnan R.M. Iyer and J L Stanford." "Magneticphase diagram of dilute Cr-Al system from electrical resistivitystudies on single crystals. 31st Annual Conference on Magnetismand Magnetic Materials. Baltimore. USA, Nov 1986

J.V Yakhmi. 1 K. Gopalkrishnan. R M Iyer and L C Gupta.' On themagnetic behaviour of transition metal impurities in chromiummatrix" 31st Annual Conference on Magnetism and MagneticMaterials. Baltimore. USA. Nov. 1986. "TIFR

C.V. Tomy" P. Ayyub". J.V. Yakhmi. L.C. Gupta." and R Vi|ayaraghavan" '"Fe Mossbauer studies of U(Fe, vCoJ, . VII Int ConfOP. Hyperfine Interactions. Bangalore. Sept 1986 "TIER

R P Agarwala. A K Dua and B.M Pande. "Surface ion damage onlefiactory coatings. Iicdo German Seminar on trends & terlini(|ues in modern materials research. Kalpakkam. Jan 1987

J V Yakhmi. "Synthesis & properties of chevrel phase compoundsand heavy fcrmion materials in particular, the uranium intermetallics . ibid

A J Singh. "Synthesis and growth of single crystals ol semiconducting III V compounds . Indo German Semmai or, trends& techniques in modern materials research. Kalpakkam Jan1987

F R a j A .O. i i l iy ; i i i iooi ' ihy. P . Siiry<iiic'ir<'iy;i)i;'i. A J Sir i t j ' i .iii<i Ji M

lyei. Hydnding behaviour ol FeTi. ,, and I'eTi ,. E.iso ofactivation and skipping of /; region . Int Symp onthopiop and,ippl ol met.il hydrides. Maubnisson Fiance. May 1986

P R.ii and A S.ilhyamooithv Hydrogen diffusion m (If. ) TiH.(' I 0) hydndc using Mossbauer spnetroscopy ibid

P R,i] .ind A S.iiliy.imoortliy. Hydrogen dillusion A siniplc appio• Klnihimi Mossb.i.iupi spnftroscopy Seventh Int Conl on HypIntel,ii•tions H.ingalore Sept 1986

26

BARCANNUAL REPORT

1986-87

A Sathyamoorthy, P Suryanarayana. P. Raj and R.M. Iyer. "The roleof ternary oxides in the activation of FeTi for hydrogen storage :Mossbauer Studies". DAE Solid State Physics Symp., PantanagarDec. 1986.

R.P. Patel and V.M. Padmanabhan. "Crystal structure of 1-prolinato22'-bipyridyl Palladium (II) chloride trihydrate", XVIII NationalSeminar on crystallography. Jammu Univ., Oct. 1986.

K. Swaminathan*'. R.P. Patel and V.M. Padmanabhan, "Crystalstructure of [N-(O carboxy phenyl) amino diaceto] 2-2' bipyridylchromium (III) trihydrate", XVIII National Seminar on Crystallo-graphy, lammu Univ., Oct. 1986. **IIT, Bombay.

P. Suryanarayana, K.B. Bhatt and A.I. Singh. "Rare earth inter-metallics for hydrogen storage". Symp. on Rare Earths Applica-tions and Technology, IRE. Bombay. Sept. 1986.

M.S. Panajkar, "Experience with the use of mass spectrometer inorganic chemistry". Workshop on the maintanance of massspectrometers. Indian Society for massspectrometry, Bombay,Mar 1986. (Invited talk)

K. Annaji Rao, "Dissolved Gas Analysis in Transformer oil", Work-shop on DGA of Transformer oils. Central Power Res. Inst..Bangalore. April 28, 1986. (Invited talk)

K.N. Rao and P.N. Moorthy. ' Photoprocesses in surfactnal solutions",Sixth International Symp. on surfactants in solution. New Delhi.Aug. 1986. (Invited talk)

C. Monohar. "Specificity effects in viscoelasticity in solution ofsurfactants. Sixth International Symp. on surfactnats in solution.New Delhi. Aug. 1986. (Invited talk)

R.P Agarwala. A.K. Dua ind'B.M. Pande. "Laboratory scale develo-pment of coating for improving characteristics of candidatematerials for fusion reactor". IAEA progress report for theresearch project.

M.B. Kokare. N.S. Krishnan. T. Kesavadas and A.J. Singh, "Crystalgrowth of cadmium selenide", BARC/I-866 1986.

U.B. Pavanaja. P.D. Naik. A.V. Sapre. J.P. Mittal, K.V.S. Rama Rao.R.M. Iyer and P N. Bajaj. "A molecular beam apparatus to studychemiluminescent reactions". BARC-I-848. 1986.

U R K. Rao. K.S. Venkateswarlu and B.N. Wani. "On the preparationand thermal stability of (NHJ, VOFr, and (NHJ3Nb0FB hydrates".J. Fluorine Chetn. 31. 29. 1986.

U.R.K. Rao. K.S. Venkateswarlu and B.N. Wani, "Phase transitions inammonium oxyiluoro Vanadates". Thermo Chimica Acta, 98. 31.1986

V. Ramshesh. "Thermal annealing and solid state exchange in cobalt(III) tris phenanthroline perchlorate dihydrate". J. Rad. Phys. andChem. 3. 185. 1986

M.S. Chandrasekharaiah and O.M. Sreedharan, "The thermodynsmicstability of LaFeO,". J. Mater. Sci.. 21. 2581, 1986.

D. Das and M.S. Chandrasekharaiah, "Platinum point reference inthe calibration of the visual disappearing filamen* optical pyro-meter", High Temp. Sci., 21, 161. 1986.

L.U. Joshi. "2-'5U- 2"Pa inequlibrium studies in coastal sediments ofthe Arabian Sea". Ind. J. Mar. Sc. 1986.

C.G.S. Pillai, M.D. Mathews, A.C. Momin and A.M. George, "ElectricalConductivity of strontium uranates", J. Nucl. Mater., 140, 285,1986.

C. Manohar. U.R.K. Rao, B.S. Valaulikar and R.M. Iyer. "On the originof viscoelasticity in micellar solutions of cetyltrimethylammoniumbromide and sodium salicylate". J. Chem. Soc. Chem.. Commun.379, 1986

PS. Parvathanathan. E.B. Mirza. GeetaDatta, S. Gurnariiand K. UshaDeniz, "Influence of the antileprosy drugs DDS on the phasetransitions in Lyotropic mixed lipid-water systems," Mol. Cryst.Liq. Cryst. 132, 105, 1986.

M.S. Chandrasekharaiah. S.R. Dharwadkar and D. Das. "Hightempe-rature phase diagrams of Re-U, Ta-U and W-U,". Z. Metalikade.77. 509, 1986.

S.R. Dharwadkar. "Free energy of formation of UMoO6 by thermo-gravimetry" J. Materials Sci. Letters. 7, 1003, 1986.

J.M. Mahajan. U.R.K. Rao and K.S. Venkateswarlu, "Thermal behaviourof Samarium nitrate and Oxide," Thermochmica Acta, 111. 391.1937.

K.S. Venkateswarlu, "Annealing of recoil effects in metal complexes,"International Symposium on artificial- radioactivity, Pune, Jan.1985.

K.S. Ver.kateswarlu and G. Venkateswaran, "Evaluation of andimprovements in the performance of zircoloy cladding duringand after its residence in water cooled nuclear power reactors,"Proc. Tech. Committee Meeting, IAEA. Cadarache. France.IWGFPT/24. 46. 1986.

A.C. Momin and M.D. Mathews, "Phase transition studies of mixed(Le. Nd)CrO,". Proc. XVIII National Seminar on CrystallographyJammu University. Oct. 1986.

S.V. Narasimhan and K.S. Venkateswarlu. "Modelling of WaterChemistry regime in the Secondary System of PHWR's." Proceed-ings of IV International Conference on Water Chemistry fornuclear reacior systems - British Nuclear Energy Society.Bournemouth. 217. 1986.

S V Narasimhan. A.G. Kumbhar. S. Rangarajan. P.K Mathur and K.S.Venkaieswarlu. "Evaluation of condensate demineralisation usingmorpholine form of cation exchanger." Proc IVth InternationalConference on Water Chemistry of Nuclear Reactor Systems.British Nuclear Energy Society. Bournemouth. 363. 1986.

P K. Mathur. "Maintenance of boiler water quality in thermal powerstations - Problems and remedies." Proc. National Seminar onThermal Power Station Problems. Bangalore. Nov. 1986.

27

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1986-87

A.K. Sriraman. "Cooling Water Treatement Problems of Scaling,Fouling and Corrosion," Pioc, National Seminar on ThermalPower Station Problems, Bangalore. Nov. 1986.

K. Usha Deniz, P.S. Parvathanathan, Geeta Datta and E.B. Mirza,"Calorimetric study of drug model membrane interactions," VIInternational Symposium on Surfactants in solution, New Delhi.1986.

C. Manohar. B.S. Valuahkar, U.R.K. Rao. R.M. Iyer and M.C. VermaSpecificity effects of visco-elasticity of detergent solutions",

ibid.

U.R.K. Rao. K. Usha Deniz. Geeta Datta and E.B. Mirza. "Drug modelmembrane interaction calorimetric and NMR Studies," 9th Inter-national Conference on liquid crystals. Berkeley, U S.A., lune,1986.

L.U. loshi, "Marine Corrosion," Proceedings of Winter School inMarine Chemistry, Waltair. Dec. 1986.

L.U. Joshi. "Microbial fouling and its control in Cooling WaterSystems." ibid, 303

LU. Joshi. "Characteristics of micro-organisms and microbiologicalinfluenced corrosion." ibid, 313.

L.U. loshi, "Corrosion due to micro-organisms in Marine Environ-ment." ibid. 315.

KM. Abubacker. C.T. Mehta and B.P. Pillai. "Material CompatibilityStudies for heavy water project, Kota," BARC-1232. 1986.

KM. Abubacker, C.T. Mehta and B.P. Pillai, "Corrosion Inhibitors forcarbon steel surfaces in contact with fresh water", BARC-1254.1986.

B.P. Pillai, C T. Mehta and K.M. Abubacker, "Studies on CorrosionInhibitors for the Cooling Water System at the Heavy WaterProject, KotaBARC-1226. 1986.

A.S.Kerkar and M.S. Chandrasekharaiah, "A kundsen effusion forthe study of thermal stability of Nuclear materials," BARC-1343,1986.

V Ramshesh and K.S Venkateswarlu, "Use of hydrazine fordeoxygenation," Central Eoard of Irrigation and Power, ReportNo. 53. Sept. 1986.

S.K. Aggarwal. G Chourasiya. R.K. Duggal, C.P. Singh, AS. Rawatand IIC Jain. "Determination of plutonium concentration byisotope dilution alpha spectrometry without purification from-'•" Am and a bulk of other impurities". Fres. Z. Anal. Chem.. 323.148 1986

U P Dntta and H.C. Jain, "Correlation of spark source mass spectro-metric sensitivity calibration factors with the element sensitivephysico-chemical properties". Int. J. Mass Spectrom. Ion Proa,68. 219. 1986.

S K Aggarwal. G. Chourasiya. R.K. Duggal. R.Rao and H.C. Jain,Experimental evaluation of: '"Pu spike for determining plutonium

concentration by isotope dilution - thermal ionisation massspectrometry". ibid. 69. 137 1986.

S.K Aggarwal and H.C. Jain. "Determination of the half-lives of tran-sactinium isotopes by the relative activity method". I. RadioanaJ.Nucl. Chem. - Letters. 103(4), 213 1986.

S.K. Aggarwal. R.K. Duggal. R. Rao and H.C. Jain, "Comparativestudy of ;l"Pu. M"Pu spikes for determining plutonium conce-ntration by isotope dilution - thermal ionisation mass spectrometry". Int. J. Mass Spectrom. Ion Proa. 71. 221. 1986.

N. Gopinath. G.A. RamaRao and P.R. Natarajan, "A new oxidant forthe potentiometric determination of Pu", J. Radioanal. Nucl.Chem. -Letters. 105(1) 7 1986.

V. Venugopal. N.K. Shukla. V. Sundaresh. K.N. Roy. R. Prasad andD.D. Sood. "Thermochemistry of Csl(s) and Cs2Cr04 (s)". J. Chem.Thermodynamics 18. 735. 1986.

J.P. Shukla. V. Shivarudrappa, P.D. Mithapara and P.R. Natarajan. "Ahighly sensitive Ext.-photometric method for the micro deter-mination of Am(III) from cone. HN03 media with Arsenazo-IH asthe chromogenic reagent", J. Radioanal. Nucl. Chem.-Letters.100(1). 83. 1986.

N. Gopinath and G.A RamaRao. "Oxidation of plutonium by Co(III)green". 1. Radional. Nucl. Chem-Letters, 104(1). 7. 1986.

K.L. Ramakumar. B.P. Datta. V.Q. Kavimandan. S.K. Aggarwal. V.A.Raman. P.A. Ramasubramanian. P.M. Shah. V.L. Sant and H.C.Jain. "Spark source mass spectrometry for the characterisationof plutonium bearing fuel materials". Seminar on Fast ReactorFuel Cycle 126. Kalpakkam. Feb. 1986

S.G. Marathe. Keshav Chander, R.B. ManoUkar and N.B. Khedekar,"Direct dissolution of mixed carbide fuel for chemical qualitycontrol", ibid, 119. 1986.

V V Ramakrishna, "Aqueous methods for plutonium recycling-areview", ibid. 33. 1986.

V Venugopal. K.N. Roy. Ziley Singh. R. Prasad. Dilip Kumar and G.L.Goswami. "Diffusion of hydrogen through stainless steel 316tubes", ibid. 38. 1986.

G.L. Goswami, A.K. Sengupta, O.L.D.'Souza, V. Venugopal, ZileySingh, K*l. Roy. S.P. Garg. Y.S. Sayi. J. Radhakrishna and D.D.Sood, "Activity of carbon in SS 316". ibid, 45. 1986.

A.K. Sengupta. G.L. Goswami, S.P. Garg, Y.S. Sayi. J. Radhakrishnaand D.D Sood. "Melting temperature of mixed carbide luel forFBTR". ibid, 50, 1986.

G.L. Goswami. A.K. Sengupta. M.S. Sargunam, V. Venugopal, ZileySingh, R. Prasad, S.P. Garg and D D. Sood. "Compatibility studiesof mixed carbide fuel with SS 316 clad tube at high temperatures",ibid, 53. 1986.

S.P. Garg. G.L. Goswami and D.D. Sood. "A thermodynamic analysisof fuel clad chemical compatibility in the FBTR". ibid. 56. 1986

S.P. Garg, G.L Goswami. R. Prasad and D.D. Sood. "Carbon potentialof FBTR fuel", ibid. 61. 1986.

28

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1986-87

Y.S. Sayi,.N. Balachander, J. Radhakrishna, S.P. Garg. G.L. Goswamiand D.D. Sood, "Measurement of equilibrium partial pressure ofCO(g) over U-Pu-C-0 systems", ibid. 63, 1986.

V.N. Vaidya, J.K. Joshi and D.D. Sood, "A study of chemical parametersfor internal gelation based sol-gel process", ibid, 19, 1986.

R.K. Sharma. N. Kumar, V.R. Ganatra, D.M. Naronha, V.N. Vaidyaand D.D. Sood, "Internal gelation process for ThO2 and (Th, U) 02,ibid. 23. 1986.

S.K. Mukherjee, J.V. Dehadraya, Y.R. Bamankar, V.N. Vaidya andD.D. Sood. "Use of vibratory nozzle for the preparation of 700micron sintered UO2 microspheres of uniform sizes", ibid, 26,1986

S. Suryanarayana, V.S. Iyer, J. Sharma, V.N. Vaidya and D.D. Sood,"Preparation of fine microspheres of uranium dioxide by jet-chopper dispersion technique", ibid, 30, 1986.

V.S. Iyer. S.K. Mukherjee, R.V. Kamat, N. Kumar, K.T. Pillai. V.N.Vaidya and D.D. Sood. "Oxidation behaviour of plutonium-uranium fuels", ibid, 41, 1986.

H.C. Jain. "Recent developments in the techniques of mass spectro-metry" Symposium on Isotope based studies on problems ofIndian geology held at Presidency College, Calcutta, March 1986.(Invited talk)

Keshav Chander, S.G. Marathe and H.C. Jain, "Application of electro-chemical techniques in nuclear fuel cycle", Symp. on Electro-chemistry. Kalpakkan, Dec. 1986.

V.V. Ramakrishna. D.G. Phal, R.D. Bhanushali and S.K. Patil, "Kineticsof absorption of uranium and plutonium on some anion exchangeresins", Symp. on kinetics & Reaction Mechanism, Jodhpur,1986.

S.K. Aggarwal, R.K. Duggal and H.C. Jain, "Precision and accuracy inthe alpha activity ratios for the simultaneous determination ofplutonium, americium and curium", Preprints Volume of theSymposium on Radiochemistry and Radiation Chemistry, Tirupati.Dec. 1986, Paper.

S.K. Aggarwal. R.K. Duggal, R. Rao and H.C. Jain, "Investigations forthe determination of plutonium and uranium in dissolver solutionof irradiated fuel using 233U", ibid, 1986.

S.K. Aggarwal and H.C. Jain. "Correlation between ""Pu/(21"Pu +:4"Pu) alpha activity ratio and alpha specific activity of plutonium",ibid. 1986.

S.A. Chitambar, A.R. Parab. PS. Khodade and H.C. Iain, "Determina-tion of isotope fractionation factor using a double spike ( :4!Pu +24"Pu) during mass spectrometric analysis of plutonium", ibid,1986.

S.A. Chitambar, A.R Parab, PS. Khodade and H.C. Jain, "Determina-tion of the half-life of 2i"Pu relative to the half-life of2 "U". ibid.1986.

H.S. Sharma. N.B. Khedekar. S.G. Marathe and H.C. Jain. "Studies onthe coulometric determination of plutonium in mixed carbidefuels", ibid. 1986.

PR. Nair, Mary Xavier and H.C. Jain. "Determination of uranium andplutonium by sequential amperometric titration", ibid, 1986.

S.P. Hasilkar, R B. Manolkar, Keshav Chander. S.G Marathe and H.C.Jain, " Titrimetric determination of microgram quantities ofuranium in presence of bulk of plutonium". ibid. 1986.

K.D. Singh Mudher, A.K. Chedha and N.C. Jayadevan, "Interaction ofUO3 and U3O8 with ammonium sulphate", ibid. 1986.

S. Sampath, N.K. Kulkarni and N.C. Jayadevan. "Catalytic effect ofPuO2 in oxidation of graphite in air", ibid, 1986.

R.R. Khandekar, N. Krishna, K.D. Singh Mudher and N.C Jayadevan,"Solid state reactions of monovalent sulphates with UO2". ibid.1986.

P.N. Iyer and N.C. Jayadevan "Plutonium(III) sulphate hydrates",ibid. 1986.

D.G. Phal. R.D Bhanushali. V.V. Ramakrishna and S.K. Patil. "Evalua-tion of some macroporous anion exchange resins for plutoniumrecovery", ibid, 1986.

MM. Charyulu, K.J. Satao, C.K. Sivaramakrishnan. and Patil. "Studieson the behaviour of plutonium (IV) in alkaline carbonate/bicar-bonate media", ibid, 1986.

MM. Charyulu, S.M. Pawar. M. Ray. S. Negi. and C.K.Sivaramakrishnan, "The plutonium loading and elution behaviour of

the resin Tulsion A-27 (MP)", ibid, 1986.

M.A. Mahajan, R.M. Sawant, N.K. Chaudhuri and S.K Patil, "Measu-rement of stability constants of Pu(III) fluoride using fluoride ionselective electrode", ibid. 1986.

PR. Nair, Vijaya Akileswaran. P. Venkatramana, Mary Xavier, S.Vaidyanathan and PR. Natarajan. "Specification analysis ofplutonium fuels- A bioamperometric method for the determinationof plutonium", B.A.R.C./I-882, 1986.

N. Gopinath, TV. Vittf.1 Rao and R.V. Kamat, "Some observations onthe behaviour of distribution of Pu(IV) between Dowex-1 andnitric acid", 2r>rd Annual Convention of Chemists, AnnamalaiNagar, 1986.

K.L. Ramakumar, V.A. Raman. V.L. Sant, V.D. Kavimandan and H.C.Jain, "Analysis of gases by spark source mass spectrometry",ibid. 1986.

A.V. Jadhav, K. Raghuraman, K.A. Mathew, P.S. Nair, and V.V.Ramakrishna. "Studies on the plutonium loading and elutionbehaviour with the resin Tulsion A-2X (MP)". Council of Chemists.Madurai, 1986.

A.G. Godbole, and Rajendra Swarup, "Synergic extraction of ura-nium(VI) by combination of 8-hydroxyquinoline and some neutraldonors", ibid, 1986.

29

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1986-87

K.V. Chetty. D.G. Phal. A.G. Godbole. R.D. Bhanushali and R. Swarup."Studies on the plutonium loading and elutin behaviour of theresin Tulsion A-27 (Gel)", ibid, 1986.

R.K. Rastogi and N.K. Chaudhuri. "Uranyl ion selectie electrodebased on thenoyltrifluoro-acetone in PVC matrix", ibid, 1986.

B.P. Datta, V.L. Sant. V.A. Raman, P.M. Shah. K.L. Ramakumar. V.D.Kavimandan and H.C. Jain, "Spark source mass spectrometricanalysis of thoria samples", Vlth Conference of Indian Council ofChemists, Madhurai, 1986.

N. Gopinath. J.V. Kamat. U.S. Sharma. S.G. Marathe and H.C. Jain,"Studies on the coulometric determination of uranium", ibid,1986.

V. Shivarudrappa. P.D. Mithapara. S.G. Marathe and H.C. Jain,"Distribution studies of plutonium(IV) using mono-octyl phenylphosphoric acid", ibid, 1986

J.N. Mathur and P.K. Khopkar. "Liquid-liquid extraction of trivalentactinides and lanthanides with N-benzoyl-N-phenyl hydroxyla-mine". Radiochimica Acta 39. 77 1986.

N. Gopinath, G.A. Rama Rao and P.R. Natarajan, "Ni(III)-A newoxidant for the potentiometric determination of plutonium", J.Radioanal. Nucl. Chem.. Letters, 105(1). 7, 1986.

G.H. Rizvi and P.R. Natarajan, "Determination of nitrogen in UO2 bykjeldahl spectrometry", J. Radioanal. Nucl. Chem., Articles. 102(12),515, 1986.

N. Goyal. A.R. Dhobale, B.M. Patel and M.D. Sastry, "Atomic absorp-tion spectroinetric studies of atomization of boron in carbon rodatomizer, Analytica Chimica Acta 182, 225 1986.

V. Natarajan. A.G.I. Dalvi and M.D. Sastry, "Traplevel spectroscopyof BaCO3 : Eu and BaCO3 :

:41 Am phosphors". Radiation Effects,88, 45. 1986.

M.V. Krishnamurthy. "Self irradiation effects in plutonium compoundsand the role of thermal spikes : EPR studies. J. Radioanal. Nuci.Chemistry. 104. 29. 1986.

A.G. Page. "Atomic absorption spectrometry-An analytical techniquefor trace metal assay". Instrumentation Bulletin. lst/2nd Quarter.16. 1986.

A.G C Nair. JM. Chakravarty. A. Goswami. B.K. Srivastava and SatyaPrakash. "Beta branching fraction of ""Cd isomers and thebranching of '' In". J. Radioanal. Nucl. Chem. 109. 1. 1987.

A Ramaswami. B K. Srivastava. S.M. Sahakundu. S.B. Manohar.Satya Prakash and M V. Ramaniah. Charge distribution studiesin alpha particle induced fission of -"''Th : Effect of excitationenergy". J. Radioanal. Nucl. Chem Articles. 102(2). 499. 1986.

T Datta. S.P. Dange. S.K. Das. Satya Prakash and M.V. Ramaniah.Influence of fragment nuclear structure on scission configura-

tion in •• Cf(SF)", Z. Physik A., 329. 81, 1986.

S.P. Dange. H. Naik. T. Datta, A.V.R. Reddy. Satya Prakash and M V.Ramaniah. "Dependent of fragment angular momentum of fissionfragment on their nuclear structure", Radiochirmca Acta 38.127.1986.

S.S. Rattan, R.J. Singh. S.M. Sahakundu. Satya Prakash and M.V.Ramaniah. "Alpha induced reactions of -'"Hi and "•'•"*Cu". Radio-chimica Acta 39, 61. 1986.

Alok Srivastava, A. Goswami. B.K. Srivastava. A.G.C. Nair. S.BManohar. Satya Prakash and M.V. Ramaniah. "Fragment shelleffect in low energy fission : Isotopic yield of technitiuni in Pu239(n.f)". Phys. Rev. C. 33. 216. 1986

A. Goswami, B.K. Srivastava. Alok Srivastava. S.B. Manohar. SatyaPrakash and M.V. Ramaniah. "Correlation between fractionalcumulative yields and neutron to proton ratio of fission productsin low energy fission", Pramana. 26. 179. 1986.

N.N. Mirashi, J.N. Mathur. Satya Prakash and M.V. Ramaniah."Studies on the electrodeposition of uranium on aluminium". Int.J. Appl. Badiat. Isotopes 37. 358. 1986.

M.S. Nagar, S.A. Pai. P.B. Ruikar and M.S. Subramanian. "Thesynthesis and characterisation of aliphatic long chain sulphoxides".BARC-1318. 1986.

G.H. Rizvi. A. De and P.R. Natarajan. "Use of bromophenol redindicator in the titrimetric determination of nitrogen in nuclearfuel materials". BARC/I-870 1986

P.R. Nair. V. Akhileswaran. P. Venkataraman. Mary Xavier.S. Vaidyanathan and P.R. Natarajan.-"Specification analysis ofplutonium fuels-A biamperometric method for the determination of plutonium". BARC/i-882 1986.

A.G. Page. S V. Godbole. M.J. Kulkarni. N.K. Porwal. S.K. Thulasidas.PS. Srimvasan and M.D. Sastry. "Setting up of a direct readingemission spectrometer and its adaptation for plutonium handling"BARC-1325, 1986.

A G. Page. A G.I Dalvi. S.V. Godbole. Y.Babu. T.K Seshagiri and M.D.Sastry, "Trace metal assay of fast breeder test reactor fuel usingDC-arc and plasma emission spectrometrv". BARC-1334. 1986

S.S. Rattan. "Development of a method to transfer counting datafrom series 88 imiltiparameter Canberra system to ND-560 com-puter" BARC 1333. 1986.

b.b. Rattan. "Development of a computer program to draw theenergy level diagram of a nuclide using calcomp plotter". BARC-1335. 1986

Renu Agarwal. K.N Roy. V Venugopal. R Prasad. D.D Sood. ML.Jayanth Kumar and MR. Ponkshe. "High temperature calvetmicro calorimeter". BARC/I-875. 1986

G.H Rizvi. R.K Rastogi and P.R. Natarajan. "Determination ofcarbon in uranium plutonium mixed carbide by conductivitymethod".

30

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1986-87

P.R. Natarajan, "Radiation effects on ion exchangers. Invited talk atthe Seminar1 on. Radiation & Photochemical Applications", BombayNov. 1986.

J.N. Mathur and P.K. Khopkar, "Extraction of transplutonium elementswith l-phenyl-3-methyl-4-trifluoro acetyl pyrazolone". Radiochem.& Radiation Chem. Symp.. Tirupati. Dec. 1986.

S.K. Mundra. S.A. Pai and M.S. Subramanian. "Thermodynamics ofsynergistic extraction of uranyl ion with l-phenyl-3-methyl-4-acetyl pyrazolone-5 (HPMAP) and some oxodonors". ibid. 1986.

G.M. Nair and D.R. Prabhu, "Synergism of crown ethers on the TTAextraction of Am(III) in benzene medium", ibid, 1986.

M.S. Nagar. P.B. Ruikar and M.S. Subramanian. "Chelates of 1-pheny]-3-methyl-4-trifluoroacetyl pyrazolone (PMAP) and 1-phenyl-3-methyl-4-trifluoroacetyl pyrazolone (PMTFP) with tetravalentactinides". ibid, 1986.

H. Naik. S.P. Dange, T. Datta, Satya Prakash and M.V. Ramaniah,"Influence of shell closure proximity on fission fragment angularmomentum", ibid, 1986.

A.G.C. Nair. A. Goswami, S.K. Das, B.S. Tomar, B.K. Srivastava, SatyaPrakash and M.V. Ramaniah, "Cumulative yields of short-livedruthenium isotopes in the thermal neutron induced fission of:4lPu". ibid, 1986.

N. Chakravarty, R.J. Singh, S.S. Rattan, A. Ramaswami, S.M. Sahakundu.Satya Prakash and M.V. Ramaniah, "Isomeric ratios for four andfive nucleon emission pathways in •'He ion induced fission ofprAu", ibid, 1986.

A.V.R. Reddy, S.M. Deshmukh. P.P. Burte, S.B. Manohar. SatyaPrakash and M.V. Ramaniah". "Isotopic yield distribution ofiodine in the thermal neutron induced fission of :45Cm". ibid.

S.K. Das. A.G.C. Nair. B.K. Srivastava. Satya Prakash and M.V.Ramaniah. "Absolute abundances of 434 KeV gamma line of'""Rh and its branching fraction from '""Ru". ibid, 1986.

G.K. Gubbi. P.P. Burte, A. Ramaswami, Satya Prakash, V.N. Vaidyaand K.T. Pillai. " A non-destructive technique for the measure-ment of axial distribution of smear density in uranium oxidespher-pac fuel pins", ibid. 1986.

A.G.C. Nair, A. Goswami, B.K. Srivastava. Satya Prakash and M.V.Ramaniah, "Chemical effect of the isomeric transition in telluricacid in solid and solution", ibid. 1986.

P.K. Pujari. T. Datta. S.P Dange. H. Naik, Satya Prakash and M.V.Ramaniah. "Positronium interaction with charge transfer complexes,ibid, 1986

V.K. Rao. G.R. Mahajnn and PR. Natarajan. "Bicarbonate complexation of Am(Ill) in neutral aqueous solution", ibid. 1986.

M D. Sastry. V. Natarajan and A.G.I. Dalvi. "Electron trapping andstabilisation of Am in 6f'7s' configuration", ibid. 1986.

M Kumar. MD Sastry. A.G.I. Dalvi and R.M. Kadam. "Chcmjcallyinduced dynamic nuclear polarisation in thermally stimulated(ree radical reactions in i irradiated U0;.'' SrSO,". ibid. 1986

V. Nataraian. A.G I Dalvi and MD Sastry. "Thermally stimulatedfree radical reactions in -'•"Am BaCO, . EPR and TSL inveshgations". ibid. 1986

V.R. Bhandiwad. B A. Dhawale. S. Rajeswari. T R Bangia and M DSastry, "Radiochemical studies in the chemical separation andspectrochemical determination oi Zr in (U. Al) system1 ibid.1986

R.M. Kadam. Y. Babu. A G.I Dalvi. and M.D. Sastry. "EPR investigationof Cu;" in LiKSO, single crystal". DAE Solid State PhysicsSymposium. Pant Nagar. Dec. 1986.

S.K. Mundra. S.A Pai and MS Subramanian. "Synergisticextractionof uranyl ion with some substituted pyrazolones and dicyclohe-xano-18 crown-6 ether", Convention of Chemists. Annamalainagar.Dec 1986

J.N. Mathur and P.K. Khopkar, "Extraction of trivalent lanthamdes byl-phenyl-3-methyl-4-trifluoroacetyl pyrazolone-5". ibid. 1986.

N. Goya], P.J. Purohit. A.G. Page and M.D. Sastry, "Reaction mechanismin the atom formation of Cd in graphite furnace", ibid. 1986

S.K. Mundra. S.A. Pai and M.S. Subramanian. "Synergistic extractionof uranyl ion with some substituted pyrazolones and oxodonors'.Council of Chemists. Madurai. Dec. 1986.

J.N. Mathur and P.K. Khopkar. "Extraction of trivalent actinides andlanthanides by mixtures of l-phenyl,-3-methyl-4-trifiuoroacety]pyrazolone-5 and neutral donors". ibid. 1986.

A.G. Page. N.K. Porwal, S.K. Thulasidas. A.A. Argekar. M J Kulkarni.M Kumar. S.V Godbole and M.D. Sastry. "Trace metal assay of(Pu. AI) matrix by AES'.' Indian Council of Chemists. Madurai. Dec.1986.

N.K. Porwal. S.K. Thulasidas, M.J. Kulkarni. A.G. Page and M.DSastry. "Determination of Be. Li. Pb and Zn in Th (NO3), solutionusing Et-AAS ". Council of Chemists. Madurai. Dec. 1986

T.R. Bangia, V.R Bhandiwad. B.A. Dhawale. S. Rajeswari and M.D.Sastry. "Solvent extraction studies in chemical separation andspectrographic determination of rare earths in high purity thoria "ibid. 1986

M.K. Bhide. A.R. Dhoble. N. Goyal. A.G.I. Dalvi and M.D. Sastry."Determination of chloride in uranium matrix by electro- thermalAAS". ibid. 1986.

A. Goswami. S.K. Das. B.S. Tomar. B.K Srivastava. T. Datta. SatyaPrakash and M.V. Ramaniah. "Influence of initial excitationenergy and angular momentum on fission fragment angularmomentum". Nuclear Physcis Symposium, Waltair. Dec. 1986.

B.K Srivastava. A. Goswami, A.G.C. Nair. B.S. Tomar. S.K Das. SBManohar, Satya Prakash and M.V. Ramaniah. "Isotopic yielddistribution of technitium isotopes in the thermal neutron inducedfission of MIPu", ibid, 1986.

31

BARCANNUL RKPORT

1986-87

R Parthasarathy. A V Murali. M Sankar Das. A M Nair and NarayanaSwamy. Trace, element studies of the zircon separates-Manimalariver. Kerala. Jour Geol. Soc. India 26. 390. 1985

R Parthasarathy. MM. Palrecha and M Sankar Das. "Chemical agesof zircons New results'. lour Geol Soc India. 27. 110, 1986

D.K Bose. M Sundaresan. R.P. Tangn. R. Kalyanaraman and G.Schumacher. "Some thermocherrucal studies of caesium uranate.molybdate and chromate". J. Nucl. Mat., 130, 122. 1985

A Sankaranarayanan. S.P. Awasihi and M Sundaresan. "An ammo-nium ion sensitive PVC membrane electrode based on cetyltnmethyl ammonium bromide". Transactions of SAEST, 20. 2.1985.

K.V. hajagopalan. R. Kalyanaraman and M. Sundaresan. "E.M.F.measurements using CaF2 cell-heats of formation of calciumchromite". J. Electrochem. Soc. of India 34. 229. 1985.

J. Rangaraian and P Sundaresan. "Polarographic study of zincthiocyanate complexes in mixed solvents". Pioc. Indian Acad.Sci 95, 327. 1985.

R.G Dhnneshwar. MR Dhaneshwar. S.N. Revankar. L.R Zarapkarand S.S. Dhaktoae. "Differential electrolytic potentiometnc titrations of thiourea, bromide and thiocyanate at trace levels ,Analytical Proceedings, 22, 346. 1985.

B.S. Chaudhari and T.P Radhakrishnan. "The uptake of catholichydrogen by shim steel". Corrosion bcience, 25. 1077. 1985.

T.P. Radhakrishnan. "Diffusion and electropermeation of hydrogenthrougn steel . Proceedings of Fundamental and Applied Electro-chemistry SAEST (Bombay) 1985.

C.K. Pillai, S. Natarajan and Ch. Venkateswarlu. "Determination ofniobium, tantalum and titanium in niobites and tantalites by flameemission and AAS', Atomic Spectroscopy 6. No. 2 531. 1985.

S.S. Dhaktode. R.G. Dhaneshwar and L.R. Zarapkar. "Electrochemicalstudies of thiourea on gold electrode". Proce. of the ATMpublished by Electrochemical Society of India. 28. Bangalore.1985

B Maiti. S Y. Shetty and R.M. Sathe. "Heterometallic BinuclearChelates of TTHA". Indian J Chem. 24A. 970. 1985.

H Parasurama Iyer. P Murugaiyan and Ch. Venkateswarlu, "Ionexchange preconcentration of cationnic impurities for testing thepurity of phosphorous". Proceedings of the National Symposiumon "Recent Irends in micronnalytical chemistry Pub 1985

R K. Malhotra ana M. Sundersanan. "Diluent etfects on synergism inextraction of uranium (IV)". Indian J. Chem 24A. 223. 1985

R K Malhotra. M Sudersanan and A.K Sundaram. "Synergism in theextraction of uranium (V) by a mixture of oxine and /; diketones .Proc. Indian Acad Sci (Chem Sci ) 94. 515. 1985

R K Malhotra and M. Sundersamn. Synergism in the extraction oflanthanides. Copper thorium in presence of HTTA and antipyrinc".Prog Indian Acad Sci. (Chem Sci ) 95. 333. 1985.

S Gang.idharan in Artificial Radioactivity. Eds KN Rao and HJArrhkur. Trends and Developments in the Application of NAATat.) McGiaw Hill 614. 1985

DG Iyer and Ch Venkateswarlu. "Sorption discrepancies of metalions in different batches of Chelex-100". Indian J of Chem 24A.805. 1985

Usha Manian. DP. Rao AR Chhokera and CSP Iyer Studies onboron controls in nuclear power reactors Significar.c <• andevaluation of basic resin properties . BARC/1 805 1984

Usrui Nathan. AR Chhokera. DP Rao and CSP Iyer "Paidiiietncstudies on boron controls in nuclear powei reactors'. HARC'l852. 1985

Rakesh Verma. S Gangadharan and S Yegnasubramaman Determinarion of lithium and oxygen using a chain of nuclear leactonInternational symposium on Artificial Radioactivity. Pune 1985

R Parthasarathy. H.B. DesaiandS.R Kayasth Individual rare earthelement determination in monazite by NAA '. International sympo.sium on Nuclear Analytical Chemistry. Halifax. Canada. June1985.

S Gangadharan. "Compositional characterisation and its mterpreiation for environmental applications". Workshop cum symposiumon Analytical and Environmental Instrumentation, JNU. NewDelhi. 1985

S.R. Kayasth. H.B. Desai and M Sankar Das. "Determination of tracesof rare earths in high purity thorium oxide by NAA'. Proceedingsof the Radiochemistry and Radiation Chemistry Symp. held at JITKanpur. Dec. 1985.

M Ramanamurthy and K.R. Knshnamurthy. "Intercomparison analysison simulated air filters by NA and AAS". ibid

S V. Burangey. L.R. Zarapkar. R.G Dhaneshwar and M. Sankar D;)S."Control of blank in the determination of lead in blood samplesby DPASV". International symposium on advanced electroanalytical techniques. Jodhpur. Dec 22. 1985

M M. Palrecha. *V. Kulkarni and R G Dhaneshwar. "Determinationof Cr(VI) in water and air by differential pulse polarography'.International Symposium on Advanced electroanaiyticai techniques. Jodhpur. Dec. 1985.

M A Rao. M R. Dhaneshwar and R G. Dhaneshwar. Electrochemicalstudies using tantalum wire electrode . ibid.

R Sundaresan and M.K TotJani. (Eds). "Proceedings of Workshop on Electrochemistry. Institute of Science, Bombay. Feb1985

PV Ravindran and A.K. Sundaram. (Eds). Proceedings of theAdvanced Workshop on Thermal Analysis ERDL. Pune.Nov 1984

R Sundaresan. M.K Totlam and K S V Santhanam (Eds). "Proceedingsof the Workshop on Electrochemical Instrumentation TIFRBombay. Oct 1985

32

BARCAWTAL REPORT

1986-87

CSP Iyer. High strength low alloy steels". Participation in Inter-companson Development of Low Alloy Steel SpectrographicStandards. Defence Metallurgical Research Laboratory. HyderabadMetals 1985

S Gangadharan. J. Arunachalam. K.R. Bhat. S. Yegnasubramanian."Neutron activation analysis in lite monitoring of healthrelatedtrace element pollutants". IAEA TECDOC-330. 147, 1985.

R K Iyer. Compilation o( lecture notes for the RCA workshop onneutron activation analysis '. BARC/I-842.

RK Iyer. "Workshop on Quality Assurance of Analytical Data".Lecture notes edited, July 1985.

MY. Josru. T.S. Krishnamoortny and Ch Venkateswarlu. "Erroneouscharacterisation of Zn/Cd citrate species by solvent extraction",Indian J Chem 24A, 991. 1985.

K V Iyer. S Ganapathy Iyer and Ch. Venkateswarlu, "Derivativespectrophotometric method for the simultaneous determinationof chromium and manganese in steel". Indian J. Tech. 24. 171.1986.

S Ganapathy Iyer and Ch Venkateswarlu. "Sorption discrepanciesof metal ions in different batches of Chelex 100". Indian J. Chem24A 805. 1985.

CSP. Iyer. "Lessons from Industrial Disaster". Chemical Engg.World. April 1986.

M.M. Paliecha. A.V. Kulkarni and R.G. Dhaneshwar. "Determinationof trace amounts of copper, lead, thallium, cadmium and zinc inpure aluminium by differential pult:e anodic stripping volta-inmetry". Analyst. I l l 375 et seq Marrh 1986

MM Palrecha and R.G Dhaneshwar. 'Voltammetric. cyclic voltamme-trie, chronopotentiometnc and chronoamperometric reductionof zinc at gold amalgam wire electrode". J Electrochem. Soc. ofIndia 35(3). 205. 1986

R K Malhotra and M Sudersanan. "Diluent effects in synergism inthe extraction of uranium (VI) . Indian J Chem 24A. 223. 1985

BS Chaudhan and TP Radhakrishnan. A study of hydrogentransfer reactions in steel by electropermeation". The Electro-chem Soc (India) 1985. p 91 Proc Annual Technical Meeting.Bangalore July 1985

M Sudersanan and A K Sundaram. Determination of stabilityconstants of non extractable complexes by solvent extractionmethod J Scient Ind Res 45. 147. 1986.

P V Ravindrnn. Algorithm for (lie calculation of kinetic parametersfrom thermoanalytical curves . Proc Fifth National Symposiumon Thermal Analysis. IIT. Kharagpur. Dec. 1985.

P V Ravindran Differential scanning calorimetry". Workshop lecture notes Thermal Analysis of Materials. IIT. Kharagpur. Dec1985 fifth National Symposium and Workshop on ThermalAnalysis Indian Thermal Analysis Soc

TP Radhaknshnan. Diffusion and electropermeation of hydrogenthirmgh steel . Symp on Fundamental and applied electrochemistry. Institution of Engineers Hall Bombay Dec 1985.SAEST (Bombay Chapter)

S Raghupathy. J Rangarajan and M Sudersanan Synerqism inextractnn o! europium in presence of antipynum and a /;•dikeslone". Indian 1 Chemistry 24A. 898. 1985

PVC Rao MC Eshwar and M Sudersanan Computation of kineticparameters from polarographic data using nncrocomputeis .Bulletin Electrochemistry 2.417. 1986

R G Dhaneshwar Electrochemical studies in mixed solvents" IntSymp on Advanced Electroanal Techniques Jodhpur Dec1985

R G Dhaneshwar. "Speciation studies employing electroanalyticaltechniques". National Seminar on Physico-chemical MethodsEnvironmentmolecular structure. Tirupati. Oct 1986

Ch. Venkateswarlu. "Surfactant sensitised metal dye systems".Dept. of Chem.. IIT, Powai. Feb. 1986.

Ch. Venkateswarlu. "Gases in metals". Indian Institute of Metals.Udaipur Branch. March. 1985.

S. Gangadharan, "Nuclear Analytical Chemistry". Workshop onUtilisation and future programme of Variable Energy Cyclotron.Calcutta. Feb. 1986.

S Gangadharan. "Utilisation of Research Reactors and Accelerators m Chemical Sciences". Radiochemistry & Radiation Chemi-stry Symposium. Dec. 1986.

S.S. Thantry. "Glass electrodes", Workshop on Glass to Metal Seals.BARC. 1986 and Workshop on Glass to Metal Seals at SmallIndustries Service Institute. Ministry of Industry. Govt. of India.Bombay. 1986.

P. Murugaiyan and R. Kameswaran. "Analysis of high purity samariumoxide by spark source mass spectrometry". Third NationalSymposium on Mass Spectrometry • Research. Applications andInstrumentation. 1986.

L.D Nair. P.K. Padmanabhan and Ch. Venkateswarlu. "Cation ex-change in Bio-Rex 63". National Symposium on SeparationTechniques with Satellite Symposium on Solvent Extraction andIon Exchange. Jan. 1986.

K.R Krishnamoorthy, P.K Padmanabhan and RK, Iyer. "Use oiChelex 100 resin for preconcentration of platinum from glassand determination by activation analysis", ibid.

SC Chaurasia. S. Ganapathy Iyer and Ch Venkatcswailu. Precipi-tation ion exchange reaction of calcium oxalate on amon ex-changers", ibid.

S C. Chaurasia. S. Gangapathy and Ch. Venkateswarlu. "Precipita-tion ion exchangesorption studies of metal oxalates on strongand weak anion exchangers". 5th Symposium on ion exchangeat Lake Balaton. Hungary. 1986.

33

BARCANM AL REPORT

1986-87

R.K. Iyer. K.R. Krishnamoorthy. M. Ramanamurthi. "Evaluation ofAnalytical Methods for the Determination of Toxic Elements infoodstuffs". IAEA Research Coordination Meeting on NuclearTechniques for Toxic Elements in Foodstuffs, June 1986,

K.R. Krishnamoorthy, P.K Padmanabhan and R.K. Iyer, "Use ofChelex 100 resin for preconcentration of platinum from glass anddetermination by activation analysis", Symp. on SepaiationTechniques. Andhra University. Waltair. 1986.

H.N. Bajpei and C S.P. Iyer. "Energy dispersive x-ray fluorescencemethod for the determination of dopants in solid electrolytes".Workshop on EDXRF Techniques and their applications, Srinagar,Sept. 1986

C.S.P. Iyer and S.M. Tnpathi. "Improvement in detection limits ofXRF analysis by preconcentration", ISAS 3rd National Sympo-sium. Waltair, Jan. 1986.

M.R. Navaratna and C S.P. Iyer. "A novel method for separation ofradionuclides Ra(D)-Ra(E)". ibid.

BS Chaiidluin and TP Raclhakrishnan. "Evaluation of hydrogendiffusivity in mild steel from electropenneation transients underconditions of galvanostatic charging". International Symposiumon Hydrogen in Metals. Queen s University. Belfast. NorthernIreland. March. 1985

S Chaudhan. "Low cost equipment for chemical educationInternational Workshop. CC Shroff Research Institute ExcelEstate. Bombay. Dec: 1985

BS Chaudhan and TP R.'idhaknshnan A study ol hydrogentransfer reactions in steel by electropermeation Annual Technica! Meeting. Electrochfimiral Society of India Indian Institute ofScience Bangalore. July 198b

BS Chaudhi'iri and R. Sundaresan. A kit for pH measurementdemonstration". Workshop on Electrochemical' Instrumentation.Indian Institure of Metals. Baroda Chapter. M S University ofBaroda. Baroda. Oct. 1986.

M Sankar Das. T.S Krishnamoorthy. P.V Ravindran and N Mahadevan."Precipitation o1 ammonium diuranate A reinvestigation AConfidential Report 1986.

R K Iyer. KR. Krishnamoorthy and M. Ramanamurtni. An evaluationof Spectruspan V DCP Emission Spectrometer . Internal ReportIEPHM. Dept of Environment. April 1986

P V Ravindran and A.K Sunciaram. "Proceedings of the fifth NationalSymposium on Thermal Analysis. IIT Kharagpur . Proceedings

34

BARCANNUAL REPORT

1986-87

High temperature superconductivity measurement

A

Gamma-ray telescope at Gulmarg.

BARCANNUAL REPORT

1986-87

Dye laser developed at BARC.

BARCANNUAL REPORT

1986-87

Pelletron tower at TIFR.

Neutron spectrometer in DHROVA reactor

BARCANNUAL REPORT

1986-87

Data acquisition system forneutron diffraction experiments.

Laser set-up.

BARCANNUAL REPORT

1986-87

Kamani reacts tank with core supportplate and studs for mounting detectors.

BARC Training School.

BARCANNUAL REPORT

1986-87

Electron microscope in metallurgy laboratory.

Reaction in progress :Fe-alloy production unit.

BARCANNUAL REPORT

1986-87

2MW in-pile loop.

Rnite element analysis of reactor components.

BARCANNUAL REPORT

1986-87

Internal view of the bituminisation plant of waste immobilisation plant at Tarapur.

5 axis articulated robot

BARCANNUAL REPORT

1986-87

Inside view of air pollution monitoring instrument.

Air pollution monitor.

BARCANNUAL REPORT

1986-87

Plant multiplication by tissue culture technique

Oil palm plant by tissue culture.

BARCANNUAL REPORT

1986-87

Microprocessor laboratoryat BARC Training School.

iLabelled compounds laboratory,

BARCANNUAL REPORT

1986-87

Radiation monitoring measuring instruments. £

Radiation monitoring measuring instruments.

r - I s ^

BARCANNUAL REPORT

1986-87

3. MATERIALS AND MATERIALS SCIENCE

3-1 Materials

Heavy Water

A heavy water final enrichment plant based onvacuum distillation process was successfully commi-ssioned with light water at Thai in Maharashtra. Con-struction of the final enrichment plant at Manuguru inAndhra Pradesh and the upgrading plant at Narora inUttar Pradesh are progressing satisfactorily. The heavywater reconcentration plant at BARC has been opera-ting successfully and the degraded heavy water fromDhruva reactor was reconcentrated to reactor grade.

Test run of the pilot plant set up at BARC for theproduction of high purity hydrogen sulphide gasdirectly from hydrogen and molten sulphur was conti-nued and the data gathered from these runs are beingused in the design of the commercial size plant. Afacility for testing larger diameter distillation columnsfor use in the heavy water upgrading plants to be usedwith the 500 MWe reactors, has been set up. Setting upof the laser laboratory for studying the feasibility oflaser isotope separation techniques for production ofheavy water is in progress. The national deuteriumsurvey for studying the variation of deuterium contentin different natural water sources was continued.

Operation of the facility set up for testing thecatalytic exchange of deuterium gas and tritiatedreactor heavy water using the hydrophobic catalystdeveloped in BARC, showed that more than 80% oftritium is removed at ambient conditions.

Rare Earths and Other Materials

At the request of M/s. Indian Rare Earths Ltd.(IRE), an alternate process, for the recovery of rareearths from the hydroxide cake obtained by monoziteprocessing has been developed. In this process mostof the cerium is separated out from the rare earthfraction. A process for selective oxidation of cerium,followed by acid leaching to obtain a rare earthchloride low in cerium has been worked out. As anextension of this work, further recovery of cerium aswell as uranium present in the cake has also been

tested. Plans are underway to carryout a large scaletesting of the process at IRE, Alwaye.

Studies were continued on the extraction andrefining of thorium and lithium, separation of stableisotopes, preparation of scintillation chemicals andfluorine gas, and recovery and purification of helium.The pressure swing adsorption unit for helium purification was operated to establish the feasibility ofpurification by this route.

N-15 enriched nitrogen compounds were suppliedto various institutions for use in agricultural research.Assistance was given for commissioning of the comm-ercial scale N-15 enriched nitric acid plant, at M/s.Rashtriya Chemicals and Fertilizers, Trombay. Theplant is based on the process developed in BARC.

Production of plastic scintillation materials andscintillation chemicals. PPO and POPOP, was conti-nued to meet the increasing requirements of variousresearch organisations and nuclear power plants.

Metallurgy

The molybdenum extraction and recovery pro-grammes made good progress. A 1 kW bipolar cell hasbeen installed and commissioned to process molyb-denite concentrates in 5 to 10kg batches. As analternate to the caustic fusion process, a reductionroastacid leaching process has been taken up fordetailed study for the recovery of tin, niobium andtantalum valves from the cassiterite deposits of Bastardistrict in Marihya Pradesh. The process is beingassessed in the rotary tubular furnace installed in theTin Demonstration Plant at Raipur. Investigations havealso been taken up to recover nickel from spentcatalysts generated by fertiliser industries. A processto recover silver from silver chloride residues hasbeen standardised and the entire amount of silverweighing about 85 kg was recovered in the pure formfrom the residues supplied by IRE. Alternate routesfrom the production of capacitor grade tantalumpowder, vanadium metal and nuclear grade zirconiumsponge are being investigated.

35

BARCANNUAL RKPORT

1986-87

In the field of electrometallurgy, substantial pro-gress has been made in the area of electroless coatingof nickel on ceramic bodies suitable for application inthe making of ceramic to metal seals. Coatings of Zn-Sn alloy are presently being developed with a view toreplacing the cadmium electroplating currently inpractice for many engineering applications. A progra-mme on the development of high strength compositesinvolving electroplating of thin films of alternate layersof copper and nickel was initiated this year.

High temperature refractory materials develop-ment programme has been reoriented to meet thegrowing demands of advanced technologies. Progra-mmes on the development of silicon carbide andsilicon nitride ceramics are being pursued to optimisethe processing conditions for improving their densityand strength characteristics Sintered sillimanite grogswith pore sizes ranging from 15-6 microns to 18 1microns have been successfully prepared and suppliedto IRE for evaluation.

The Tin Demonstration Plant at Raipur which wasinaugurated in June, 1985 has been operating regularlyat the rated capacity. Based on this experience aProject Report for setting up of a 100 ton/yr.Tin Extra-ction Plant has been prepared and submitted to M/s.MP State Mining Corporation.

Work on the development of Niobium-Titaniumsuperconductor wires was continued. About 100 kg.of 0-5 mm dia. 45 filament Nb-Ti wires were producedfor making prototype accelerator magnets.

The improved 500 A fluorine cell was operatedand the gas produced was used in the preparation ofcertain metal fluorides. A bigger cell of 1500 A capacitywas fabricated and is being installed. A fluorine gascompression system was commissioned and operatedsatisfactorily. A facility has been set up to developvarious carbon products for specialised applications.

A process was worked out for the recovery andrecycling of zirconium from process waste streamslike the acid pickle liquor generated by Nuclear FuelComplex (NFC). Hyderabad. In this method, nitric acid

and hydrofluoric acid are removed from the liquor bysolvent extraction process and the zirconium is preci-pitated out from the aqueous media.

A solvent extraction process for the recovery, ofcobalt from some of the waste streams from the plantsof M/s. Hindustan Zinc Ltd. has been developed undera collaboration agreement with them. The process wastested on a bench scale to produce significant quanti-ties of pure cobalt sulphate. The process is expected toundergo pilot plant trials shortly.

3-2 Materials Science

Thermophysical and thermodynamic propertiesof fuels

Important thermophysical properties like specificheat, thermal conductivity, and hot hardness of mixeduranium-plutonium carbide and oxide fuel pellets ofdifferent microstructural and chemical characteristicswere determined at different temperatures. A detailedthermodynamic computation has been done on the U-Pu-C-N-0 system for predicting the composition ofdifferent phases at different temperatures.

Microstructure and mechanical properties corre-lation studies were carried out on laser melted zircaloy-2and 17-4-PH stainless steel materials. Quantitativefractography was carried out on impact tested speci-mens of 17-4 PH steel to study correlation between thefracture surface characteristics and impact energyabsorbed in the ductile-brittle transition region.

A computer programme was developed for predic-ting the temperature distribution in the mixed carbidefuel pins for FBTR during the beginning of life utilisingthe thermophysical data generated.

Physical Metallurgy

The major thrust was on the studies of micro-structures and mechanical properties of Zr-2 5% Mballoy pressure tubes being processed in NFC forfabrication trials. The evolution of the microstructureand of the crystallographic texture of these tubes,during various fabrication steps, was established and

36

BARCANNUAL RHPORT

1986-87

the influence oi process parameters on the mechanicalproperties of finished tubes was studied- Based onthese results of investigations the fabrication scheduleoi Zr 25' ' I\Jb pressure tubes has been finalized andrecommended to NFC for prototype production. Re-search support was also provided to NFC in theireffort for perfecting the roiling procedure of Zircaloy-2sheets used for calandna tubes.

Studies on phase transformations and mechanicalproperties of steels and nickel base alloy used innuclear power stations and heavy water plants werecarried out Investigations were earned out on hydro-gen embnttlement of a martensitic stainless steel usedas end fittings of pressure tubes and the thermalstability of a nickel base alloy used for reactor tubes inheavy water plants

Basic i esearch work in materials science includedstudies on zirconium base and iron base metallicglasses, quasicrystalline structures of aluminium andmagnesium base alloys, the shape memory effect,diffusion in crystalline and amorphous alloys andinternal friction in zirconium alloys.

As desired by the Commission of Enquiry appointedby the Government of India to enquire into the causeof the crash of Air India Boeing 747 Kanishka'. on June23. 1985 over the Atlantic, detailed metallurgical exami-nation of the recovered parts of the aircraft werecarried out The findings were reported to the Commi-ssion Damage assessment and enquiries to ascertainthe cause of the Talcher Heavy Water Plant accidentoccurred on April 4.1986 were carried out. A reportand recommendations for future actions were sub-mitted to the DAE Enquiry Committee

3-3 Process Technology

DesalinationErection work of the 425 m'/day multistage flash

desalination plant is progressing. Most of the equip-ments were installed and installation of piping is underway The 30 rrr/day shipborne desalination plant is inthe final stages of tes(::;ig. Both the plants are expect-ed to be commissioned by April 1987. Efforts are beingmade to transfer the technology for multistage flashdesalination plants.

The reverse osmosis brackish water desalinationplants set up at Gujarat and Andhra Pradesh areworking satisfactorily, catering to the drinking waterneeds of the surrounding rural population. Reverseosmosis plants of different capacities ranging from 20-50 m'/day are being fabricated for various usesincluding effluent treatment in a public sector under-taking and for radioactive effluent treatment. Researchand development work pertaining to polymeric mem-branes suitable for sea water desalination as well asfor industrial applications are being continued.

BARC is represented in the "Technology Missionon Drinking Water in Villages and Water Management"constituted by the Department of Rural Development.Ministry of Agriculture, Government of India, for tech-nological inputs to solve salinity problems and isassociated with drinking water projects in Karnataka.Tamnnadu and Gujarat. Inputs, in terms of waterdesign and cost estimates for the reverse osmosisplants have been provided to the Technology Mission.

Hydrogen Production

Fabrication, erection and testing of equipment,electrical and ventilation systems and control panel ofthe 33 IMm'/hr eiectroiytic hydrogen plant are nearingcompletion.

37

Publications

BARCANNUAL RKI'ORT

1986-87

RG Parr. K Rupnik and S K Ghosh. Phase space approach to thedensity functional calculation of Compton profiles of atoms andmolecules". Phys Rev Lett 56 1555. 1986

U Lee and S K Ghosh. Density-gradient expansion of the kineticenergy functinal for molecules". Phys Rev. A 33. 3506. 1986.

R G Parr and S.K. Ghosh. "Thomas Fermi tneory of atomic systems".Proc Natl Acad Sci USA 83 3577. 1986

S K Ghosh and R G Parr. Phase spare approach to the exchangeenergy functional of density functional theory". Phys. Rev. A 34.785. 1986

WJ Mortier SK Ghosh and S Shankar. "The effective electronegativity of an atom in a molecule its equalisation and partialcharges J Amer Chem Soc 104.4315.1986

D Sathiyamoorthy and N Knshnam. rthy. Modelling of comparlmentaiisod gns fluidised bed reactor". National Symposium onApplication of Computers in Chemical engineering. Kalpakkam

1986

D K Bose 0 K Mehra and C K Gupta. "Preparation ol RE Si t'e alloyby meiallothPrmii' reduction J of Less Common Metals 110.239. 1985

JCSehraandPL Vijay. Electrorefining ol zircaloy scrap Achievements and prospects Electrometallurgy of Non ferrousMetals IIM Khetn Nagar Chapter 1986

D K Bose. "Processing of raw materials for commercial superconductmg Materials 1GCAR Kalpakkam. 1986.

M K Totlani Eloctroless deposition of metals'. International Workshop on Clectrodeposited functional Coatings and Electroreforming. IIT Bombay 1986

Sohan Singh A L Pappachan ana A K Grover. Studies on theelectrodeposition of aluminium from tetrahydrofuranaluminiumchloride electrolyte 1NCEF 86 II Sc . Bangalore. 1986

RS Dutta A Bose and P K De. Indexing degree of sensitization inaustemtic stainless steel by non destructive in situ metallographic and electrochemical technique NDT and Metalloqaphyand their Interaction BARC Bombay 1986

R Bhat S.K Roy and S V K Rao Sintering studies in magnesiamonticellite system 50th Annual Technical Session of theIndian Ceramics Society Calcutta. 1986

P. Bhat and S K Roy Microstructural evolution during the earlystages of sintering of almmnH powder compacts 12th NationalP/M Conference Hyderabad 1986

Ram Prasad. A Gulnar and S V K Rao Sintering behaviour andelectrical conductivity of ceria stabilized zirconia'. 50th AnnualTechnical Session of lnd Cer Soc Calcutta 1986

G P Kothiyal. M.K Rajpurkar and Ram Prasad. Measurement ofthermophysical properties of single crystals of germanium"ibid

P.K. Agnihotn. "Influence of minor additions of Cr2O, and Nb2O5 ondensification and grain development of U02", ibid.

B.R. Vyas and S.V.K. Rao. "Microstructural evaluation of muilitebodies". Metallography and NDT. BARC.

IG Sharma and T.K. Mukherjee. "A study on purification of metallu-rgical grade silicon by molten salt electrorefining", Met. Trans.B.. June 1986.

J.M luneja. K.P. Abraham and G.N.K. lyengar. "Thermodynamicstudy of liquid Mg-Al alloys by vapour pressure measurementsusing the boiling point method", Scripta Metallurgica, 20. 177,1986

JM Juneja. G.N.K. [yengar and K.P. Abraham. "Measurement ofvapour pressure of liquid magnesium by the boiling pointmethod". Trans I.I.M.. 38. 519. 1985.

Sohan Singh. A L Pappachan and H S Gadiyar. "Electrodepositionof cerium and Ce-Co alloy". J Less Common Metals, 120. 307,1986

Sohan Singh. I.e. Sehra and C K Gupta, "Preparation of rare earthmetals by molten salts electrolysis Chemical fundamentals, celldesign and limitations". Electrometallurgy. Karaikudi.

0 K Mehra. Sohan Singh. J C Sehra. T.S. Krishnan. D.K. Bose andC K Gupta. Extractive metallurgy of rare earth metals - develop-mental work at BARC". Rare Earths. Applications and Techno-logy'. Bombay

A C Bidaye. T K Mukherjee and C K Gupta. 'Recovery of molybde-num metal powder from spent acid", Annual Technical Meetingof IIM. Bombay. 1986.

R C Hubh. IG Sharma. T.K Mukherjee and C.K. Gupta. "A study onpreparation of Nb Ti alloy". ibid.

IG Sharma and C.K Gupta. "A study on electron beam meltpurification of hafnium", ibid.

K U Nair D Sathiyamoorthy and D K Bose. "OxychJorination kineticsof molybdenum sulphide in fluidised bed reactor". 40th ATM ofIIM. Bombay

N Krishnamurthy and D Sathiyamootihy. "Computer aided designof distributors for stable gas fluidisation". 39th Annual Session ofIIChE. Hyderabad. 1986

N Krishnamurthy. S.M Sherty, D.K Bose and C.K Gupta. "On thepreparation of vanadium metal". 40th Annual Technical Meetingof IIM. Bombay

IC Sehra P L Vijay V.D. Shah and R.H Rakhasia. "Iodide process •A route lor the preparation of high purity group IV metals . ibid

IM Juneja. M Karuppan Chetty. Sohan Singh and I.e. Sehra.Studies on the processing of molybdenite concentrate by soda

ash roasting", ibidJC Sehr.i PL Vijay and CK Gupta. "Application ot molten salt

electrolysis in reclamation of zircaloy scrap". Electrochemistryin Nuclear Technology. Kalpakkam

38

BARCANM Al. RKPORi

1986-87

J T John P R SincjJi ;uitl H S Gadiyar. Study of the diffusion olhydrogen through f'e 3 5 Ni alloy by electrochemical techniques40th Annual Technical Meeting of IIM. Bombay

5J K Giios.il P K De and H S Gadiyar. Localised corrosion of duplexstainless steei ibid

A Bo.se and P K De Pitting behaviour ol alloy 400". ibid

JT John PK D e a n d H S Gadiyar Studies relating to the hydndingof Zr 2 5 Nb alloy ibid

GC P.ilii.mdHS Gadiyar Pitting morphologies of zirconium basealloys in aqueous ami non aqueous chloride media Electrochemistry in Nuclear Technology. 1GCAR Kalpakkam

PR Singh and HS Gadiyar EPR lor assessing the degree ofsensiti7a1ion in nickel base alloys ibid

PK Cliauhan A Sharria and H S Gadiyai Application of computerprogramme in predicting the corrosion rates from electrochemi1 al rlata ibid

SS Cr.otitli.ii Kl) Gaonkar US Gadiyar SS Shinde and SV¥ 'IIM.II Galv,i;ii'' corrosion ol SS 304 L in cont.ict with zircaloy 2in nitric acid BARC I 880 198G

H U Nan I) S itluyamooiihy DK BoseandCK Gupta Chlormationc.nielli s of MoS in lluidised bed Annual Technic<il Meeting ofIIM Bombay 1986

Sh (Jiiosal and P K Uc Enviionmenl induced cracking of zircaloy2 fuel ( .addiii'i lubo IAEA Tethnital Comrtiittee Meeting enI'lopciiies of Maifii.iN loi Walei Ri'.ictoi luel Clements Vierv.a.AhSl l l . l

SV Phadni-and H s (Jadiyai Oxidation of zirconium alioys comparativi.' aspi-i t , Agueous iiicdium I 240 350 C) and High torn|n'Mt:i!i' 'JI'MIII i 900 (.'I Technical Meeting on Water ChemistryIAIJA CRP meeting on i lad coolant interaction on BARC. 1986

fJC Sfini .iiul C; P Tr.van A i omparative study of characterisationmethods f'»r UO Anniia! Terhnic.il Meeting of IIM Bombay

1986

S Snsai;.i and M H Baipa! Isotope Effect in Monolayer localisedI'hysir ,ii Ad.->oprtinn Pait I Theory Indian Journal of Chemistry

2'v\ 307 198G

S Snsaii.i and M M Bajpai Isotope Effect in Monolayer localisedP!'1, ,i( ii Adsorption Part II Neon Adsorption on Porous glass atCr/ugi-nii temperature Journal of Chemistry 25A 3111080

AH I) Sou/a l)r:tei ruination of N 15 by Mass Spectrometry .N.ilinriai Workshop on Use of N 15 as a tracer ion AgriculturalResearch M :, Rashlnya Chemicals (4 fertilizers 1986

Mahesh Singh Ke.shava Chandra and S Sen A Technical Assessmerit of Lali'pur Rock Phosphate for the Production of Phosphon:s BARC 1323 198G

Mahesh Singh Keshava Chandra and S. Sen. Technical Evaluationof Indian Rock Phosphates for Phosphorus Production', Transactions of Indian Institute of Metals. Regn. No 413/86, 1986.

Mahesh Singh. Keshava Chandra and S Sen. "Effects of grades ofRock Phosphates on the Conversion of Phosphorus slag to slagcement —A comparative technoeconormc assessment". First NCBInternational Semionar. New Delhi 6. Jan 1987.

Kesruwa Chandra. Mahesh Singh and S. Sen. "Technical ManpowerDevelopment for phosphorus plant . National Seminar at Lucknow.Dec 1986

CN Rao Transformation of Reference Axes of Pole Figures".Transactions of the Indian Institute of Metals. 39 No 4. 389. 1986

SA Mooithy CN Rao and M.K. Asundi. Internal Friction due tograin boundary relaxation in zirconium". Transactions of theIndian Institute ol Metals. 39. 232. 1986.

P K K Nayar and IS Batra. "On Thermal Analysis of Melt Spinning'.

Trans 1IM 39. 609 1986

I S Batra. P K K Nayar. V V Raman and P Das Gupta. "PrecipitationKinetics and Room Temperature Fracture Mechanics Parametersin 18 Ni (350) Steel". BARC/I 884. 1986

C N R.io. T R Ramachandran and G S Murthy. "Serrated Yielding inan Al 3 wt ". Mg alloy with trace additions of indium, cadmiumand tin . Journal of Materials Science Letters. 5. 93. 1986

G K Dey. E G Baburaj and S Banerjee. "Crystallization kinetics of Zr 33at ' Ni amorphous alloy . Journal of Materials Science. 21. 117.1986

H Venkatramam. Y J Bhatt. M Knshnamurthy and S P Garg. "Thermogravimetric Studies on the Silicothermine Reduction of UraniumTetrafluonde under Nitrogen '. Journal of Less Common Metals.118 281.1986

G K Dey and P Mukhopadhyay Precipitation in the Ni Cu basealloy Monek K 500 . Materials Science and Engineering 84. 177.1986

IK Chakravarty GE Prasad.TK Sinha and M K .Asundi. "HydrogenEmbntilement of ASTM A 203 D Nuclear Structural Steel". JNM138 107 1986

TG Chattopadhyay. Y J Bhati and S K Khera. Phase Diagram of thePd To System Journal of Less Common Metals. 123. 251. 1986

GB Kale K Bhanumurthy. K C Ratnakala and S.K Khera. "SolidState Bonding of Zncaloy 2 with Stainless Steel'. ibid. 138. 73.1986

G L Goswami A K Sengupta 0 L DSouza. V Venugopal ZileySingh. K N Hoy. S P Garg and D D Sood. "Activity of Carbon inSS 316 Proc Seminar on Fast Reactor Fuel Cycle". IGCARKalpakkam 45 1986

S P Garg G L Goswami. R Prasad and D D Sood Carbon Potentialof I'BTR Fuel ibid. 61 1986

39

BARCANNUAL REPORT

1986-87

Y S Sayi. M Balchander, J. RadhaKrishna. S.P. Garg. G.L. Goswamiand D D. Sood. "Measurement of Equilibrium Partial Pressure ofCo (g) over UPu CO System", ibid. 63. 1986.

A K Sengupta. G.L. Goswami. S.P. Garg, Y.S. Sayi. J Radhakrishnaand D D Sood. "Melting Temperature of Mixed Carbide Fuel forFBTR". ibid. 50. 1986.

G.L Goswami. A.K. Sengupta. M.S. Sargunam. V. VenugopaLZileySingh. R Prasad. S P. Garg and D.D. Sood. "Compatibility Studiesof Mixed Carbide Fuel with SS-316 Clad Tube at High Tempera-ture . ibid. 53. 1986

S P Garg. G L Goswami and D D Sood. "A Thermodynamic Analysisof Fuel-CJad Chemical Compatibility in the FBTR". ibid. 56, 1986

G L Goswami A K Sengupta. O L D'Souza. S P Garg and D.D Sood.' High Temperature Compatibility of Mixed Carbide Fuel with SS316 . Proc Intl Conference on "High Technique Ceramics". Italy.1986

GL Goswami. PKK Nayar. D Raj and GP Tiwari. "AcousticEmission Studies of Structural Relaxation in a Metallic Glass".Proc of the Second Int) Conference on Acoustic Emission Ed JPOhap S98-S101. 1986

M D Vora. M Unniknshnan and G E Prasad. "Field Metallographyas NDT Techniques", DAE Symposium Proc. "Metallography andNDT Interactions in Materials Evaluation". 80:01. 1986.

KL Thalor. A.K Saxena and M.P.S. Ramani. "Solutions to theproblem of Arc Revival in Phosphorus Plants". Symposium onElectrometallurgy Karikudi Nov 1986

V.K. Shnvastava. A.K. Saxena and M.P.S. Ramani. "Developments inthe Electrothermal Process for the production of ElementalPhosphorus. Furnace System Design", ibid.

V. Ramachandran. V.K. Agarwal. B.M. Misra and M.P.S. Ramaru."Search for New Polymeric membranes", BARC/J-885, 1986.

S. Prabhakar and B.M. Misra, "Studies on the Structural. Kinetic andThermodynamic Parameters of Cellulose Acetate Membranes".J. Membrane Sci 9 143 1986

S Prabhakar. B.M Misra and M.P.S. Ramani. "Relative Transport ofwater (H2O) and Tritiated water (HTO) across cellulose Acetate(CA) Membranes", Radiochimica Acta 39, 93, 1986.

R C Bindal and B.M, Misra, "Separation of Binany Liquid systems bySorption-A Comparison with Pervaporation". Separation Scienceand Technology, 21(10). 104-7-1058, 1986

P Raghunathan, M.G. Nayar and M.P.S. Ramani. "Porous nickelElectrodes by Alloy Electroplating Technique". Bull. Electrochem.2(3). 237, May 1986.

M.G Nayar. S. Suresh Rao. P. Raghunathan and S.K. Mitra. "AdvancedElectrolysis Cell for Hydrogen Production", Proceedings on"Innovations in Electro chemical processing and Reactor Design",11 T Bombay. 1986.

P K. Tiwari. R.K. Verma. M.P.S. Ramani and S.P. Mahajan, "Effect ofSurface Roughness and Polymeric Additive on Nucleate PoolBoiling at Subatmospheric Pressures", International Communi-cation. Heat and Mass Transfer. 13. 503. 1986.

40

4. LIFE SCIENCES

BARCANNUAL REPORT

1986-87

4-1 Molecular Biology

Four new mutations affecting UV-sensitivity ofbacterial cells were isolated from an 11-kb DNA clonecarrying gene uvrl for DNA repair. Gene for strepto-mycin resistance has been self-cloned. It was observedthat when a DNA clone of this was used in transforma-tion, plasmid-bome transformants are recovered onlyif the chromosomal DNA has also incorporated a copyof the gene.

Recombinant DNA technology was used to gettailored agrobacteria containing two structural genesinvolved in nitrogen fixation. These agrobacteria wereused to transfer nitgenes to tobacco plants for furtherstur' ss.

A maize cob isolated locally, which indicated thepresence of transposable elements, has been grownfor two generations and several mutations were obt-ained. Studies indicated that transposable elementsmay be active on chromosome 9.

During soil nitrogen deficiency cowpea roots sec-rete substances which induce the synthesis of Rhizobiumcapsular polysaccharides (CPS). These in turn induceearly symbiosis-specific plant proteins (nodulins). Host-induced synthesis of capsular polysaccharides wasfound to provoke root hair curling leading to enhancednodulation efficiency. Detailed genetic studies on thevarious aspects of nitrogen fixation in plants werecarried out.

Structure-function relationship of the photosyn-thetic enzyme (RuBP carboxylase) and effects of specificand limited modifications of spinach leaf enzyme bytrypsin were evaluated. Selective inactivation of NADP-Malic enzyme purified to homogeneity from maize leafindicated the presence of one histidine/subunit at ornear the active site involved in catalysis. The enzymed-aminolevulihic acid dehydratase from maize leafwas irreversibly inactivated by light in presence offlavin mononucleotide and the parameters favouringand inhibiting it were determined.

Electropermeabilisation of cells is being studied

for possible application in medical and bio-technologicalresearch. This can be utilised for the slow release oftherapeutic drugs whenever regular intake of drugs isrequired. Photoactivating enzyme from E. coli waspurified to homogeneity using an isoelectric focussingcolumn and its properties were determined.

Inhibition of amylase activity by chlorfluorenolwas reversed by simultaneous application of gibberellicacid in unsoaked embryoless half seed of barley. UV-sensitivity ot cyanobacteria (Anacystis nidulans) toultraviolet radiation (UV) has been correlated to theinactivation of the photosynthetic electron transportsystem n under conditions which allow maximal dark-repair of damage to DNA.

Computer technology was widely applied in mole-cular biology research and some software for thispurpose was also developed indigenously.

4-2 Biochemistry

Research programmes on information macromole-cules, cell control mechanisms,physiological and cel-lular response to radiation and environmental pollu-tants, metabolic basis of diseased states and bioche:

mical applications were continued.

Cellular control of enzyme biogenesis is beinginvestigated using diverse approaches. Studies on thesynthesis of the well-known extracellular thermonuc-lease in Staphylococcus aureus have revealed thatthe two intracellular nucleases (one heat-labile andanother heat-stable) are not the precursors of theextracellular enzyme despite similarities in Ca+ + requi-rements and actions on both DNA and RNA. Immuno-logical studies have revealed that the DNA polymerase,induced durinq aerobiosis of anaerobic S. cerevisiaecells, is mitochondrial DNA polymerase; this inductionprecedes mitochondrial DNA synthesis and de novobiogenesis of mitochondria.

Further studies on Corynebacterium gene for //-galactosidase, which was cloned in E. coli with lac Z-minus background, revealed that the product of the

41

BARCANNUAL REPORT

1986-87

cloned gene is a //galactosidase protein fused to anextra peptide fragment. The chimeric plasmid is un-stable during growth in media devoid of lactose due todeletion of the inserted gene.

Studies in Halobacteria have led to the detectionof the two enzymes ribulose bis-phosphate carboxylaseand ribulose 5-phosphate kinase which participate inCO2 fixation. This finding has significance from thepoint of view of bacterial evolution.

Studies on molecular mechanisms of chemicalcarcinogens have indicated that early carcinogenicresponse to benzo(a) pyrene, aflatoxin B, and nitrosa-mide could be modulated by potential anticarcinogensincluding vitamins, trace metals, phenolic flavonoidsand other derivatives. These dietary factors can con-tribute substantially to the body's defence againstcarcinogenic onslaught by environmental chemicals.

Studies on neuro-endocrine mechanisms in growth,development and differentiation processes have beencontinued. ATP-synthesizing potential of liver mito-chondria was found to be impaired in streptozotocin-induced diabetic rats on account of decreased ATPaseactivity. These changes could be effectively reversedby insulin administration. In the neonatal rat brain, theNa'. K' - ATPase acitivity is under direct influence ofcatecholamines. epinephrine and norepinephrine in-dicating their roles in nerve transmission

Programmes on development of newer diagnostictests are being continued. Significant elevation oflevels of urinary pteridine were observed in cancerpatients. Plasma zinc/copper ratios and platelet ag-gregation in whole blood were measured followed byfractionation of plasma lipoproteins for assessment interms of their densities and binding to cholesterol insubjects exposed to atherosclerotic risk factors.

A screening programme of human blood donorswas undertaken to quantitate the drug detoxificationprocess in terms of activity of lymphocytic glutathioneS-transferases. Three distinct categories of blood donorscould be identified in terms of glutathione S-transferase

levels. Studies on pre- and post-dialysis levels ofglutathione S-transferases have indicated that levelsof these enzymes could serve as indicators of thera-peutic efficacy during kidney malfunction.

An activator of plasminogen- which may have apotential in thrombolytic therapy- has been isolatedand purified from Yoshida ascites tumour cells.

Banana peel oxalate oxidase was found to beideally suited for the determination of urinary oxalatelevels. The enzyme also showed promise in the pre-vention of kidney stone formation.

Studies on the effects of dietary fat on the composition and physiology of biomembranes have beencontinued.

-KRa (a daughter product of natural 2'2Th) contentof the samples of placentae and teeth from individualsresiding in the monazite-bearing high natural back-ground areas of Kerala coast is being estimated inorder to determine their body burden of 2:"Ra. Samplesfrom individuals in control areas are also being ana-lysed.

4-3 Bio-Organic Chemistry

Search for more bioactive compounds were con-tinued with whole plants and cell cultures derivedfrom them. A number of natural products were isolated,characterised, their structure determined and bioac-tivities studied. Antifeedant and insecticidal activitiesof several natural and synthetic products were deter-mined Detailed study on the morphogenetic effects ofPlumbagin. isolated from the plant Plumbago zeylanicashowed that it causes retardation of growth, interfereswith cuticle formation and hatching of eggs and alsoselectively stains prothoracic gland cells.

Sex pheromones of different insects causing havocin cotton and okra and orchard plants were synthesi-sed by simple chemical methods using easily availablechemicals. New and simple methods were developedfor the synthesis of a plant growth regulator, n-triacantanol polyclic hetro compounds, complex chro-

42

BARCANNUAL REPORT

1986-87

menes, for acylation of phenol and for preparation of aseries of acyl compounds, some of which have showedsignificant bioactivity. Analytical methods were deve-loped for the separation and estimation of Rauwolfia,alkaloids, furocoumarins and sterol. Instrumentalmethods including 2 D NMR spectroscopy were usedto elucidate the structure of different compounds.

Micropropagation of economically important plantsusing tissue culture technique were continued. Exten-sive field trials of oil palm, mulberry and sandalwoodplants developed by the method were carried out incollaboration agencies like Central Agricultural ResearchInstitute, Mysore and Sandal Research Centre. Bangalore.Protoplasts from economically and medicinally importantplants were isolated and plants were regenerated.Increased yield of medicinally important alkaloidscould be obtained by further improving the cell culturetechniques Sorghum and oil palm plants were regene-rated in the laboratory using callus.

4-4 Nuclear Agriculture

New and improved strains of rice, pulses, oilseeds and jute developed at Trombay were tested infield trials carried out in different States and by theIndian Council of Agricultural Research (ICAR).Punjabrao and Mahatma Phule AgriculturalUniversities and Maharashtra State Seeds Corporation(MSSC) substantially increased the area undercultivation for seed multiplication of pulse varietiesdeveloped at BARC. Agricultural Department of theMaharashtra Government and MSSC distributed about150 ton of certified seeds of pigeonpea and mungbeanvarieties developed at Trombay to about 60,000farmers for cultivation.

A bacterial gene governing kanamycin resistancewas successfully transferred to tobacco leaf discs.Plants grown in tissue culture from leaf discs heritablytransmitted the character to the progeny. Evaluation ofnitrogenous and phosphatic fertilizers and sewagesludges were continued. Effectiveness of ammoniumpolyphosphate. a newly developed fertiliser for

cereal and pulse crops, was determined incollaboration with ICAR in different parts of thecountry. This fertilizer blended with micronutrient zincwas also evaluated in a variety of Indian soils.

Studies carried out have shown that green manu-ring can be effectively used as a decontaminationmethod to remove the residual insecticide hexachlo-rocyclohexane remaining in paddy fields. Salt uptakecharacteristic of rice cultivars sensitive and tolerant tosalt were estimated using radiotracer techniques. Theresults indicated cation adsorption in the salt tolerantcultivar was comparatively more though anion uptakewere identical in both.

4-5 Pest Control

An effective method was developed to controlpopulation growth rate among potato tuber moth bycreating confusion among feral males by placingsynthetic female pheromones in the field. A singleauthosomal recessive gene was found to be the causeof red eye character of a spontaneous mutant thatoccured in potato tuber moth. An extract obtainedfrom the fruit pericap of Thespesia populnea deterredfeeding and ovi position in spotted bollworm of cotton.Slow release of spores of Bacillus sphericus form ofsynthetic briquets in an aquatic environment couldbe effectively used to exterminate culex fatiganslarvae. Pest control studies using female sex phero-mones and hybridised insect species were continued.

4-6 Food Technology

Development and standardisation of methods forthe preservation of food and in-situ destruction ofpathogens in edible substances using irradiation tech-nology were continued. It was found that withoutintroducing ph'ytotoxicity and quality changes, gammairradiation of unripe mangoes with a dose rate upto 75krad can be used to destroy the insects which spoilsthe fruit during the ripening stage. Studies have shownthat ripe mango pulp could be kept without deteriorationin quality for four months when packed in Standipack

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BARCANNUL RKPORT

1986-87

flexible pouches at 93 C and under nitrogen. It wasobserved that pathogens of banana and mangoes cancross infect each other fruit, susceptibility of fruits toinfections depends on characteristics of peal phenolics.pectolytic enzyme complex oi.Aspergillus niger canbe used for effective masceration of various fruitssuch as mango, guava and banana and an aromaconcentrate oi ripe Totapuri mango was identical with.synthetic mango essence Ripening of tomatos couldbe delayed and shelf life could be enhanced byirradiation at 25 krad and storage at a temperature of15 C without affecting its vitamin C content and colourGamma irradiation of Bengal gram resulted in significantincrease m the polar hpids and fatty acids and reduc-tion in non polar lipids without aciverse effects on thesensory attributes An odourless, colourless and solublefish protein hydrolyzate (FPH) was prepared from atrash fish

A method based on the activities of peptidaseswas developed to assess the freshness of different fishvarieties during storage. Cathepsin B. an active proteiiicise of fresh water fish Tilapia mossambica,waspurified to homogeneity to study the properties. Analkaline protemase optimally active at pH 8 5. identifiedin kidney lysosomes. wa.\ found to be constituent oflysosomal membrane

Blackening of green pepper berry was found to beassociated with polyphenol oxidase and the precursorsas oithodihydroxy flavanones. The phenolase activityv/a.s found to be concentrated in skin as against thecorn where 1 he enzyme concentration appeared to benegligible

A new transportable moving bed onion irradiate-]'h.ts been designed and is under fabrication.

Strains of AspergiUus flavus/parasitcus group werefound to produce ethylenc glycol in idiopha.se concurrent with the formation of aflatoxins An inverserelationship between lipid and aflatoxin biosynthesiswas observed The presence of exogenous ethylene inthe medium suppressed adatoxin formation Aqueoussolutions of 2-chloro-ethylphosphonic acid (CEPA) were

sufficient to control aflatoxin formation in groundnutswhen stored at 28-30 C and 100% R.H. and also tocontrol the growth of mould.

Bacillus cereus BIS-59, an isolate from shrimpsproduced two toxins, hemolytic and non-hemolytic.both lethal to mice. Lipopolysaccharide (LPS) of Vparahaeinolyticus isolated from seafoods could bedetoxified by exposure to gamma-radiation, lipid A,separated from this LPS. could not be detoxified byirradiation. This component activated macrophages.LPS-P complex isolated from Salmonella typhimuriumwas found to be an effective immunogen.

Macrophages elicited by lipopolysaccharides weremore in number and larger in size, compared to thoserecovered following proteose-peptone (PP) or thio-glycolate (TG) elicitation. However, cathepsin D and />'•glucuronidase activities in LPS-elicited cells werehigher whereas arylsulfactase activity was lower thanin the other two groups. Thus, the response of thelysosomal enzymes to the stimulants was selectiveand specific Relative population of resident andTG-elicited peritoneal macrophages was reduced signi-ficantly in protein deficiency. Cells isolated from protein-deficient animals showed increased neutral lipids andcholesterol : phospholipid molar ratio and a significantreduction in long chain fatty acids, that serve asprecursors for immunoregulator eicosinoids, producedmainly in macrophages

Rat liver Kupffer cells isolated and purified usingpercoll density gradient endocytosed latex beads,when cultured in vitro

Erythrosine (FD & C Red 3). a widely used syntheticfood colouiant, or its metabolites formed after activa-tion with rat-liver or cecal microbial enzymes and inassociation with known co-mutagens did not showmutagenicity by the Ames test However, testing withBacillus subtilis multigen sporulation assay revealedi'ts mutagenicity in ail the above-mentioned conditionsconsistently. The magnitude of genotoxicity of thefood colourant was found to be dose dependentMutagenicity studies on curcumin. the active colour

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BARCANNUAL REPORT

1986-87

principle of turmeric showed that its alcohol extractdid not exhibit mutagenic activity with three Salmonellatester strains in Ames assay system. Quercetm. aflavanol present in foods of plant origin inducedsignificant loss in Tetrahymena cell population whichcould be attributed to injury to plasma membrane andto lysosomes. The insecticides endosulfan, phosalone.malathion and permethrin were observed to interferewith the sexual life cycle of Chlamydomonas reinhardtii.

Micronucleated erythrocytes persist in the peri-pheral blood of mice exposed to benzo(a)pyrene, aknown chemical mutagen/carcinogen. Mice exposedto ionizing radiation and lucanthone demonstratedmigration of such micronucleated cells from bonemarrow to peripheral blood in a dose dependentmanner thereby validating peripheral blood micro-nucleus assay as a suitable measure of inducedchromosomal damage in mice Feeding of butylatedhydroxytoluene (BHT) at 1% level in diet did not elicitany reproductive toxicity in mice However, the weightsof several organs including lungs, heart and spleenincreased significantly in parent and first generation

A simple method has been developed for therapid purification of D-amino acid oxidase from T.variabilis by hydrophobic chromatography on phenyl-sepharose and negative adsorption on DEAE cellulose.The immobilization of microbia! cells in gelatine byradiation induced polymerisation obviates the use ofglutaraldehyde for sensitive enzymes.

The immobilization of yeast cells on glass surfacecould be accomplished by coating with polythylemimine(PEI). The PEI coated cells were stable and efficientunder extreme conditions and repeated use. Glucoseoxidase immobilised in cotton cloth was found to besuitable for the desugaration of egg melanage and inthe conversion of glucose to gluconic acid.

A pure culture of ureolytic organism that cantolerate high concentration of urea and ammonia wasisolated, which could continuously hydrolyze ureaeven at 5% concentration..

Two novel enzyme activities were detected in the

chloroplast fraction from fresh spinach leaves Anoxidase which can oxidise Mn2' ion in the presence ofCl and 2-mercaptoethanol and a ferrooxidase whichexhibited ferrocynanide dependent oxygen evolutionwith H O,. as substrate.

4-7 Radiation Medicine

Under an ongoing programme for developing anaevaluating newer hepatobiliary agents """Tc-tnmethida,""•"Tc bromotrimethida, have been evaluated in ratsand rabbits Both the compounds appear to be verypromising.

"'""Tc-labelled thioglycolic acid as a possible renelimaging agent has been evaluated in animals. Techni-ques for radiolabelling blood cells and proteins with""'"Tc and ' ' (l"In using bifunctional chelates and oxinerespectively have been worked out. It appears thatmonoclonal antibodies can be labelled with """'Tcusing DTPA without damaging them and may proveuseful for immunoscintigraphy.

Monoclonal antibodies against thyroglobulin havebeen prepared and two stable clones have beenisolated and propagated. Work on further purificationand characterization of the monoclonal antibodies isin progress. These antibodies are very specific. It isproposed to radiolabel the antibodies and evaluatethem for immuno-scintigraphy for detecting metastasisfrom thyroid cancer, immunotherapy. radioimmuno-therapy and in vitro radioimraunoassay.

An enzyme linked immunosorbant assay has beendeveloped for estimating serum thyroglobulin. A RIAtechnique with indigenously available kits has beendeveloped, which will enhance the usefulness of theavailable kit and save considerable foreign exchange.

The specific crude antigen used for detection oftuberculosis in biological fluids is being purified andcharacterised. Attempts are now being made to standar-dise an assay for detection of tuberculosis of uterus,bones and joints.

Kits containing reagents for diagnosing tubercu-

45

BARCANNUAL RKPORT

1986-87

losis by detecting the presence of antigen or antibodyin biological fluids are being prepared. These kits willbe distributed to various laboratories and hospitals inBombay for field trials. Work is being done to standar-dise antigen assay for detection of leprosy PGL-1.

In vivo animal model -in mice for cultivation ofplasmodium Berghei is being established with anobjective to prepare antigen and antibody for develop-ment of an immunoassay for detection of the disease.

Studies on developing brain of neonatal rats indi-cate that thyroid hormones are involved in its matura-tion by influencing the malic enzyme activity. Theactivity of malic enzyme is markedly lowered in thebrain of neonates from hypothyroid mothers and issignificantly enhanced in the brain of neonates frommothers injected with thyroid hormone.

Radiation Medicine Centre is recognised by WHO

and IAEA as the regional reference centre for South-East Asia in Nuclear Medicine. The Centre has sixresearch contracts with IAEA and UN on Radioimmu-noassay of thyroid related hormones; Radioimmuno-assay procedures in filarial infections; Quality ControlSurvey of gamma cameras; Phannacokinetics of radio-label hepatobiliary radiopharmaceuticals; Quantita-tive evaluation of nuclear medicine imaging proceduresfor diagnosis of liver diseases; and Study on immuno-diagnostic techniques in the evaluation of tuberculosis.

Experimental studies on laboratory animals showedincreased effectiveness of radiation or hyperthermiain the presence of certain drugs in cancer therapy. Itwas observed that tumour growth was completelyreduced when this was applied along with drugs liketrimeprazine and melphalan. Five phenothiazine drugs-chloropromazine, promethazine, trimeprazine, prochlor-perazine and trifluoperazine which offered radiopro-tection to euoxic cells were evaluated upto 46°C.

46

Publications

BARCANNUAL REPORT

1986-87

S.K. Apte, and I. Thomas. "Membrane electrogenesis and sodiumtransport in filamentous nitrogen-fixing cyanobacteria", Eur.J. Biochem. 154. 395. 1986.

S.K. Apte. "Metal ions in Biological Nitrogen Fixation : In Currentstatus of Biological Nitrogen Fixation Research H.S. RandhirSingh. Nainwatee and S.K. Sawhney" (eds.) p. 97-99. H.A.U..Hissar. 1986.

A.A.Bhagwat. and J.Thamas "fl/iizoftju/rc-Induced plant proteins intarget root epidermal cells of Vignaunguiculata Proc. Thirdinternational symposium on the Molecular Genetics of Plant-Microbe Interactions (Montreal) Martinus Nijhoff Publishers TheNetherlands". July 1986.

A A Bhagwat. "Early interactions in legume-Rhizobium symbiosis.In Current Status of Biological Nitrogen Fixation Research RandhirSingh, Nainawatee. H.S. and Sawhney. S.K. (eds)". p. 39-40.H.A.U.. Hissar. 1986.

C.R. Bhatia. P. Viegas. A. Bhagwat. H. Mathews and N K. Notani."Genetic transformation of plants". Proc. Ind. Acad. Sci. (PlantSci.)96 : 79-112. 1986.

AS. Bhagwat and, K. Gopalakrishna. "0. phthalaldehyde as a probein the active site of Ribulose, 1,5-bisphosphate carboxylase"Biochim, Biophys. Acta 873. 45-51. 1986.

KC. George, M.A. Shenoy and B.B. Singh. "Radiosensitisation ofbypoxic bacterial cells and animal tumours by membrane activedrugs and hyperthermia", In Proc. Intl. Symp. on Radiotherapy indeveloping countries. IAEA-SM-290/74, Vienna. 1986.

K.C. George and B.B. Singh, "Response of fibrosarcoma to hyper-thermia and anticancer drugs as modified by phenothiazines".Proc. Biennial Conf. Ind. Soc. Oncology.' 392. 1986.

P.R. Khanolkar and N.K. Notani, "Homospecific and heterospecifictransfprmation with chimeric plasmid DNA in HaemopMusinfluenzae, J. Genetics. 65 : 31-36. 1986.

A.T. Lilani. R.K. Joshi. S.D. Mishra and B.K. Gaur, "Differential effectsof plant growth regulators (PGRs) on mungbean germinationand their macromolecular basis". In : J. Exptl. Biol. 24 : 717.1986.

M. Lai. R.K. Choudhary. B.K. Nayak. K.C. George and B.B. Singh."Trace element analysis of normal and cancer bearing biologicaltissues by proton induced X-ray emission". Proc. WorkshopApplications of Nuclear Techniques. Srinagar. 1986.

T. Mathew. S.D. Mishra and B.K. Gaur. "Hormonal mediation inchlorfluorenolinduced delay of morphogenesis in leaf explantsof Aalanchoe daigremontiana. Ind. J Exptl. Biol. 24 : 242. 1986

S.D Mishra and B.K. Gaur, "Improving kernel weight through delayin flag leaf senescence of Barley by plant growth regulators(PGRs)". Ind. J. Exptl. Biol. 24 : 328. 1986.

K.P. Mishra and B.B. Singh, "Temperature effects on resealing ofelectrically hemolysed rabbit erythrocytes". Ind. J. Exptl. Biol. 24.737.

N.K. Notani, "Some medical applications from recombmant DNAtechnology". The Indian Practitioner 647. 1986.

N.K. Notani. "Genetic transformation in bacteria and plants'. Proc.DAE. Symp. on Molecular Genetics : 1. 1986.

NK. Notani and PS. Chauhan, Eds.. "Environmental mutagenesisand carcinogenesis. Festschrift volume for". Dr. K. Sundaram.B.A.R.C.. 217. 1986.V

N.K. Notani. "DNA repair and mutagenesis in Haemophilus influen-zae. Festschrift Volume for". Dr K. Sundaram Environmentalmutagenesis and carcinogenesis' 1986.

J.K. Sainisand G.C. Harris. "The Association of Ribulose 1. 5-bispho-sphate carboxylase with phosphonboseisomerase and phos-phoribulokinase". Biochem. Biophys. Res. Commun. 139. 947.1986.

B.B. Singh, "New Chemo and Radiosensitising drugs". Int. J. Radiat.Biol. 50. 371, 1986.

P. Viegas. H. Mathews. C.R. Bhatia and N.K. Notani, "Monohybridand dihybrid segregations in the progenies of tobacco trans-formed for kanamycin resistance with Ti-vector system". IGenetics 6. 25. 1987.

M. Mathur. "Some applications of computers in gene manipulations.Proc. DAE Sym. Newer Approaches to Biological Applications".154. 1985.

MA. Shenoy and B.B. Singh. "Phenothiazine induced radioprote-ction of normal mice". Radiosens. Newsletter. 5(2). 1986.

V.T. Sriruvasan. B.B. Singh, P.K. Chidambareswaran and V. Sundaram.' Effect of hydrogen content on estimation of seed oil by NMR". J.Amer. Oil Chem. Soc. 63. 1059, 1986.

S.S. Ranade. S H. Bharde, G.V. Talwalkar, V.T Srinivasan and B.B.Singh. "Significance of histopathology in Pulse NMR studies onCancer". Mag. Res. Med. 2. 128. 1986.

M. Ramanadham. "Crystallography and its applications in Biology,in Physical Techniques in Biology", (ed) S.N. Chatterjee. IPS 67.1986.

Vinaykumar. K. Sankaran and K.K. Kannan. "Crystallization andpreliminary data of Indian buffalo erythrocyte carbonic anhydrase"I Mol Biol. 190. 129. 1986.

M Ramanadham, L.C. Sieker and L.H. Jensen. "Significance of highprecision in enzyme structures". Current Sci. 56, 172. 1986.

K.K Kannan, Vinaykumar. K. Sankaran, Padma Satyamurthy and S.Chakravarty. "How drugs effect enzyme function? A proteincrystallographic approach". Current Sci. 56. 173, 1986.

K.K. Kannan. "Macromolecular crystallography in Direct Methodsin Macromolecular Crystallography and Crystallographic Stat-istics", (eds.), H. Shenk, A.I.C. Wilson and S. Parthasarathy. 22.1987.

47

BARC\ \ M \I. Rhl'ORT

1986-87

A. Sequeira and M. Ramanadham. "Use of small computers forcrystallographic research XVIIIth National Seminar on Crysta-llography", University of Jammu, Jammu Tawi, 1986.

M Ramanadham. "On the importance of the R-factor in proteinrefinement", ibid.

Vinaykumar and K.K. Kannan. "Accessibility and contact surfacearea studies for human carbonic anhydrase B". ib.d

M V Hosur, T. Schmidt. R.C. Tucker. J.E. Johnson. B. Selling. T.GaJlaher and R.R. Ruckert. "Molecular architecture and functionoi black beetle virus", ibid.

M. Ramanadham. "Crystallography and its applications in biologyIndian Physical Society Workshop on Physical Techniques inBiology". Variable Energy Cyclotron Centre. Calcutta, (invitedtalk) Feb. 1986.

K.K. Kannan. "Current trends in enzyme research". Mahabaleshwar

Seminar on Modern Biology. 1986

K.K. Kannan. "Evolution of enzyme active sites", ibid

M.V. Hosur. "Protein structure'. ibid

K.K. Kannan. "How drugs affect enzyme function' A protein crystallographic approach". 52nd Annual Meeting of the Indian Academy of Sciences. Banaras Hindu University. Varanasi. (Invitedtalk) Nov. 1986.

M. Ramanadham. "Significance of high precision in enzyme structu-res", ibid

M. Ramanadham. "Studies on biomolecular structures with neutrons(in Hindi) A National Symposium in Hindi on Nuclear Research.Bhabha Atomic Research Centre. Bombay. 1986.

R K Bhattacharya and R S Bagewadikar. "Functional modificationof rat liver nbosomes by m vitro action of N methyl N' nitro Nnitrosoguamdme Chem Bio! Interactions. 57 235. 1986

T.P A Devasagayam Lipid peroxidation m rat uterus , BiochimBiophys Acta 507 1986

T.P A Devasayayam Lov: ,i-.i-ls of hpid peroxidntion in new bornrats Possible.1 factors m resistance m hepatic micro.soine.s .f'EBS Letters 199 203 1986

T P A Devasagayam Senescence associated decie.ise of NADPHinduced lipid peroxidatnn in r.it liver mirrosomes . FEBS Letters205. 246. 1986

T A Devasagayam ,md C K Piishpendran Changes m .iscorbaleinduced lipid peroxidation of hepatic rough and smooth microsomes during pnsl natal development and ageing in rates .Mecli Ageing Dev 34. 13. 1986

N M Dhar and Wi|aya Allekar "A class I (schifl base) FDP aklolaseo! halophihc archnebactenal origin . FEBS Letters 199. 151.1986

N M. Dhar and Wijaya Altekar. "Distribution of class I and class IIaldolases in halophilic archaebactena". FEMS Letts 35. 1986

P F Ferozi. V S Aboobaker and R K Bhattacharya Modulation bycertain factors and metabolic activation of aflatoxin B, asdetectedin vitro in a simple fluonmetnc assay" Chem BiolInteractions 58. 173. 1986

K V Inamdar. U Tarachand. T P A Devasagayam and K C Raghavan.Immune complex of Banana Oxalate Oxidase Use in quantitation ofurinary oxalate". Analytical Letters. 19. 1989. 1986

S.S Katyare. "Effect of carbonyl cyanide m chlorophenylhydrazineon oxidative phosphorylation in rat liver mitochondria Site-specificity of its action . Ind J Biochem Biophys 23.70. 1986

S tv. Kelkar. "Rat liver undone diphosphate glucose dehydrogenaseDual mechanism of regulation in vivo". Arch Biochem Biophys246, 301. 1986

S G Kshirsagar. "Strontium calcium discrimination mvitro by rattissues" I Biosci 9. 1985

S G Kshirsagar and K Sundaram. The placental and body burdenof Radium 226 in the rat . Bull Radiat Protection 9. 181 1986

R Miial. K Sen Ray. TJ Srivastava and R K Bhattacharya Study ofbinding of some anuno acid derivatives ot 2 2.' I Inorg B:ochem27. 135. 1986.

C K K Nair. "Microbes to Control Environmental Polluiion . Scavenger16. 1986

J.M Noronha. History of the Methyl Trap Hypothesis Fed of AmSoc for Exp Biol. iTASEB) Summer Conf on Fohc Acid. VitaminB,. and I C metabolism Vermont Academy. USA. June 1986

J M Noronha and V Kesavan. Tofate Absorption and Metabolim inalcohol fed rates Chemistry and Biology of Ptendine . (Watei deGrayter & Co Publishers) pp 445. 1986

JM Noronha and SV Koppikar. "The Fat Receptors , ScienceToday 75. Dec 1985

MV.Narurkar.JP Kamat. N A Mhdtre and LM Narurkar. Inductionol hepatic drug metabolising enzymes by normal metabolites m

tumour bearing animals .is an -nd lo c.vmcer chemotherapy 2ndBiennial Conl ot Ind Soc: ot Oncology Bombay Fob 1986

RK Bhatt.ichary.i Potfiiti.il .inticaicmogens Nutrient and nonnulnenl hir.lois lninbilmij i,iicino<jon DNA adduct fonn.ition

hii!

R K Bhaltacharya Potential ol Vit.imm A as a supprp-.M)i ol carcinogenirnty of atlatoxin 15, l l lhAnn Conl Environmental Mutafjon Society of India. Madias I'd) 1986

TK Snotty AR Ftancies and R K Bhatlachatva Uffvt of ceii.nndietary factors on the mutagenicity of aflatoxin B, in S typhimu-mini TA 100 ibid

D Bhatlachariee. Biochemical approach to detect gene mutationilud

48

BARC\ \ \ l \I. Kl I'OKI

1986-87

D Bhattacharjee. W Pretsch and U.H. Ehling. "Biochemical, genetical. geneticai and haernotologica! characterization of ethylnitrosourea induced Iactate dehydrogenase enzvme activity mutants '.i h id

S G Kshirsagar and K. Sundaram. "Placental and body burden of226Ra in the rat". 13th Conf Ind. Association for Rad. Protection.Calcutta. March 1986.

I M Noronha, "Historical background of the methyl trap hypothesis .FASEB Summer Symp. on "Folic acid. Vitamin BK, and on carbonmetabolism '. Vermont Academy. Saxtons River. USA . June1986

IM Noronha and V. Kesavan. "Folate metabolism in alcohol fedrats". 8th Inl Symp on ' Ptendines and fohc and derivatives".Montreal. Canada. June 1986

Wijaya Altekar and N.M Dhar. "On archabactenal class I and classJl aldolses from extreme halophiles". 8th Int Conf on "The Originot Life at Berkeley. California, US A.. July 1986

KU Dennis. PS Parvathanathan, G Datia and E.B Mirza. "Calonmetric study of drug model membrane interactions". 6th IntSymp on Surfactants in solution. New Delhi. Aug. 1986

GS Kaklij (i) Molecular mechanism of enzyme regulation : enzymedegradation", and (n) "Role of free NH, terminal in proteinbreakdown". Symp. on Molecular Enzymology . Recent Develop-ments Seminar" Mahabaleshwar. October 1986.

Wijaya Altekar and Gomathi Krishnan. "Nature of salt requirementsfor the enzymes from extremely halophikc bacteria". Int. Seminaron "structure and formation of enzymes". Varanasi. Oct 1986.

G S Kaklij and S M Kelkar. "Phospliorylation of erythrocyle membrane and its interaction with FDP aldolase". Int. Seminar onStructure and function of enzymes". Vaianasi. Oct 1986.

SM Kelkar. "Structure function relationship of rat liver UDPG-dehydrogenase in vivo . Int, Seminar on Structural function ofenzymes. Varanasi. Oct 1986

SS Katyare. "In vivo effects of thyroid hormone on oxidativeenergy metabolism in rat brain". 17th Annual meet. EndocrineS"c. of India. Bombay. Nov. 1986.

D Bhattacharjee. "Differential responsiveness in gene mutationinduced by chemical mutagen and radiation in mice". AsianRegional Conf. on Medical Physics. Bombay. Dec. 1986.

CKK Nair MS. Priyolkar and D.S. Pradhan. "Students on beta-galactosidase of Corynebacterium murisepticum: cloning ofthe gene and characterization of the enzyme". D5th Annual MeetSoc. Biol Chem.. Trivandrum. Dec. 1986.

J P Kamat. I.M Narurkar and M.V. Narurkar. "An inhibitor of hepaticdrug metabolising enzymes from Yoshida sarcoma ascites tumourcells", ibid.

T P A Devasagayam. "Low levels of lipid peroxidation in rat livermicrosomes during senescence - a special adaptation", ibid

R Sivabalan and U Tarachand. Influence of streptozotocm diabeteson morphogenesis and progression of rat deciduoma". ibid

KG. Raghavan and U. Tarachand. Feasibility of using immobilisedoxalate oxidase for degradation o! oxalate under in vivo condihons" . ibid

KV Inamdar. U. Tarachand. FR. Billimona and KG Raghavan."Determination of urinary oxalate using immune complex ofbanana oxalate oxidase". ibid

Gomathi Krishnan and W. Altekar. Glyceraldehyde 3-phosphatedehydrogenase from an extreme halophile Halobactenum valli-smortis", ibid

F.F. Firozi and R.K. Bhattacharya. "Effect of plant flavonoids on wvitro biactivation of aflatoxin B, and its adduct formation withDNA". ibid.

Shyamal D Desai. K. Pasupathy. KG. Chetty and D.S Pradhan."Induction of mitochondrial DNA polymerase during respiratoryadaptation of Saccharomyces cerevisiae".

L.P Badheka. Bharathi Prabhu and N.B. Mulchandam. "Dibenzyl-butyrolingnans from Piper cubaba. Phytochemistry". 25. No. 2.487. 1986

G S. Verma. V. Ramakrishnan. N.B. Mulchandani and M.S. Chadha."Insect Feeding Deterrents from the Medicinal Plant Tylophoraasthmatica". Entemel. exp. appl. 40. 99. 1986.

Beena Bakshi. N.B Mulchandani and J. Shankar. "A novel phenale-none from Salvia moorcraftiana". Planta Medical No. 5. 408.1986.

Beena Bakshi, N.B. Mulchandani and J. Shankar. "Abistane diter-pene quinnones and a new diterpene epoxide from Salviamoorciaftiana". Proc. Indian Acad. Sci. 97. No. 2. 167. 1986

A.V. Vyas and N.B. Mulchandani. "Bezzene induced 1H NMR shifts offlavone pretons : Detection of H-3 ". Magn. Reson. Chem. 24.421.1986

Ashok V. Vyas and N.B. Mulchandani, "Polyoxygenated flavonesfrom Ageratum conyzoides". Phytochemistry", 125. 2625. 1986

G.S. Verma. V Ramakrishnan. N.B. Mulchandani and M.S. Chadha.Effect of Tylophora asthmatica alkaloids on growth and develop-ment of Tobacco caterpillar". Spodoptera litura F. Proc IndianNatl. Acad. 52. No. 4. 405. 1986.

R R Iyer and V.R Mamdapur. A convenient Synthesis of n-Tnacontanol. a Plant Growth Regulator". Chemistry & Industry 398. 1986.

S V Tnvedi and V R. Mamdapur. "Terminal Olefin Oxidation A shortSynthesis of Himasecelone". Indian J. Chem. 25. 1160. 1986.

R R Iyer and V.R. Mamdapur. Plant Growth Regulators Synthesis ofn Tnacontynols. n Triacontenols and n Tnacontanol". Indian JChem 25. 1216. 1986

A Chattapadhay and V.R Mamdapur, ' A simple synthesis of Dihydrolasmone". Chemistry & Industry. 491. 1986

49

BARCANNTAL RKPORT

1986-87

S Mithran and V.R Mamdapur. "A Facile Synthesis oi Onential FruitMoth Sex Pheromone". Chemistry & industry. 711, 1986.

A.S.U. Choughuley. "Nitresamines in our environment". 73rdScience Congress. Chemistry Section. Delhi University. Delhi.Jan 1986. (Invited talk)

A.S.U. Choughuley. Food Carcinogens and Antjcarcinogens". ChemDept.. University oi Roorkee. Jan 1986. (Invited talk)

N.R Shenoy and ASU Choughuley. 'Betel Leaf Phenolics asinhinitors of nitrosamine formation". Environmental MutagenSociety of India. XI meeting held at Madras, February. 1986

A.S.U. Choughuley. "Nitresamines in food and environment". XIIEnvironmental Mutagen Society of India. Hisar. Feb. 1987 (Invitedtalk)

N R. Shenoy and AS U Choughuley. "Inhibition and Catalysis ofsome model amines nitrosation by some distary factors", ibid

S R. Udupa and M.S. Chadha, "Biodeagradation of EnvironmentalAromatic Pollutants". 73rd Session of the Indian Science Congress.Chemistry Section. Delhi. Jan. 1986.

V A Bapat. PS. Rao and MR Heble. "Immobilisation of cells andprotoplasts of Catharanthus roseus", Proc. Indian Acad. Sci. 96.413. 1986.

V.A. Bapat. M. Mhatre and PS Rao. "Regeneration of plantlets fromprotoplasts cultures of Pergulana pallida". J. PI Physiol. 124.413.1986.

B.D. Benjamin. AT Sipahimalani. MR. Heble and M.S. Chadha."Production of pharmacologically active alkaloids from cellcultures ot Catharanthus roseus. VI International Cong. PI. Tiss.Cell Culture Minneapolis. Minnesota. USA. 249. 1986.

C.R. Bhatia. P. Viegas. A. Bhagwat. H Mathews. and N.K. Notani."Genetic transformation of plants. Proc Ind. Acad. Sci. (PlantSci.) 96. 79. 1986.

C.R. Bhatia. P. Viegas. A. Bhagwat. H. Mathews and N.K. Notani."Promoter sequences for the expression of foreign genes in plantcells"; In. Abstr. Natl. Symp. Recent Advances in Plant Cell andTissue Culture of economically important plants. Hyderabad,India, 2. 1986.

S. Eapen and R Gill. "Regeneration of plants from cultured rootexplants of mothbean Vigna aconitifolia L.Jacq. Marechal)'Theor. Appl. Genet 72. 384. 1986.

S. Eapen. R. Gill and P.S. Rao. "Tissue culture studies in mothbean".Curr. Sci. 55. 707. 1986.

L. George. V. Abraham. D.R. Suryavanshi AT. Sipahimalani and V.T.Snnivasan. "Yield. Oil content and fatty acid composition evalua-ted in androgenetic plants in Brassica juncea. PI. Breed. 98. 72.1987.

R. Gill and S. Eapen. "Plant regeneration from hypocotyl protoplastsof mothbean" (Vigna aconitifolia) Curr. Sci. 55. 100 1986.

R.Gill, S.Eapen and P.S Rao, "Morphogenetic studies in Vignaaconitifolia Jacq. Marechal and V. Mungo L. Hepper. VI Inter-natle". Cong PI. Tiss. and Cell Culture. Minnesota. USA. 28. 1986

R Gill. S. Eapen and P S. Rao. "Tissue culture studies in MothbeanFactors influencing plant differentiation from seedling explantsof different cultivars". Proc. Ind. Acad. Sci. 96. 55. 1986

S.C Maheshwari, R. Gill and N. Maheshwan, "Isolation and regeneration of protoplasts in higher plants . Results and problems incell differentiation". Vol. 12. J. Reinert and H. Binding (Eds ).Springer Verlag. 1986.

H Mathews, P.S.Rao and C.R.Bhatia. "Transformation of Brassicajuncea by Agrobacterium tumefaciens harbouting plasmid pTiT37 14 a/a". J. Genet. 65, 37. 1986.

V.H. Mathews, P.S. Rao and C.R. Bhatia, "Somaclonal variations incotyledonary plants of mung bean". Z. Pflanzenzuchtung 96.169.1986.

M. Mhatre, V.A. Bapat and P.S. Rao, "Plant regeneration in proto-plast cultures of Tylophora indica and Pergularia pallida InAbs. Natl. Symp. Recent Advances in plant cell and tissue culiureof economically important plants", Hyderabad, India. 1986

D. Sreedhar. V.H. Mathews and P.S. Rao. "In vitro multiplication of oilpalm (Elaeis giiineensis Jacq)", In. Natl Symp. Recent advances inplant cell and tissue culture of economically important plants.Hyderabad. India. 1986.

V. Abraham and C.R Bhatia. "Development of strains with yellowseed coat in Indian mustard (Brassica juncea Czem and Coss)".Z. Pflanzcnzuchig 97. 86. 1986.

S.G. Bhagwat. R. Mitra and C.R Bhatia. "Variation in differentsources for high protein in sprinq wheat". Ind. J. Agnc. Sci. 56.404. 1986.

C.R. Bhatia, P. Viegas, AS. Bhagwat. V.H. Mathews and N.K Notani."Genetic transformation of plants", Proc. Indian Acad. Sci. (PlantSci.) 96. 79. 1986.

U N. Dikshit. R.G. Thakare. D.C. Joshua. N.S. Rao. N Mukerjee andAN. Datta Mahadev. "New tossa jute variety for Orissa". IndianFarming 36. 32. 1986.

S. Eapen. AN. Suseelan. S.G. Bhagwat. P.S. Rao and C.R. Bhatia."Grain yield and yield components of regenerated wheat plantsin Sc 4 generation'. Proc Indian Nata Sci. Acad B51 627.1986

DC Joshua and R.G Thakare. "A day neutral mutant in jute".Tropical Agriculture 633 : 316. 1986.

T G Krishna and C R. Bhatia. "Y-Protein. a sulphur amino acid richprotein from pigeon pea". (Cajanus cajan (L ) Millsp). J Bio-science 10 57. 1986

VH Mathews. PS Rao and C.R. Bhatia. "Somaclonal variation incotyledonary plants of mung bean '. Z Pflanzenzurhtg 96 169.1986

50

BARCANNTAL RKPORT

1986-87

V H Mathews P S Rao and C R Bhatia. Transformation of Brassicaluncea by Agrobactenum temelaciens harbouring plasmidpTiT37 and its rooty mutant pTiT37 14a/a ". I Genetics 65 37.1986

R Mitra and C R Bhatia Cylogenetics of wheat Characterization,chromosome location and evolution oi repeated DNA sequences".Indian J Genet 46 (Suppl ) 54. 1986

GSS Murty Cultural practices for increasing sesame yields'.Indian Farming 36 3 and 23 1986

GSS Murty DC Joshua N S Rao and CR Bhatia. Inducedmutations in sesame Sesame and Safflower Status and potentialF'AO plant production and protection paper No 66. 168 FAO ofUN Rome 1986

MS Raj.idhyaksha DS Joshi. GP Phondke. R Mitra and KSund.ir.iin Licti'- dehydrogenase isozyme distributions in lymphocyto.s from normal and leukemic mice . Cancer BiochemHiophvb 8 167 1986

K n Suscel.in MVP Rao and CR Bhatia. Transfer of a vanent• ilk-jf (Adh Alb) of .ncohoi dehydrogenase qene from durum to-ic'Mivuiri wli(;<i1 Cereal Res Comm 14. 1986

T G Krishna S C Pawar R Mitra and C R Bhatia. Biochemical andgenetic characterization of seed storage protiens in two tropicallegumes tCajanus c;ijan (L ) Millsp and Vigna radiata (L )Wilizaek ) In Gene structure and function in higher plants (edsG M Reddy and E H Coe Ir ) Oxford & IBH PubJ Co New Delhi181 1986

R Mitra and C R Bh.itia Repeated DNA sequences and polyploidyin cereal crops In DNA systematic^ V01 n plants", (ed SKDuttaj CRC Press Boca Raton Honda. 1986

M G Neufler D A Hoisington Walbot Virginia and R S E Pawar.Genetic control of disease symptoms In Gene structure and

function in higher piants (eds GM Reddy and EH Coe jr )Oxford & 1BH Pub Co New Delhi 123. 1986

T G Krishna and R Mitra Genetics and evaluation of arachinprotein in ground nut Proc Annual seed protein workshop.CSIRO Canberra. Australia Nov 1986

R E Pawar. R G Thakare and C R Bhatia Genetic improvement ofpulse crops Induced mutations and their use in cross brreding .Proc FAO/IAEA Workshop on improvement of grain legumeproduction using induced mutations Pullman. WA. USA. July1986

S E Pawar Development of high yeilding varieties o) crops usingrad'ations (in Hindi) In National seminar on teaching andresearches in nuclear sciences and technology". Bombay. Dec1986

V V Athalye and K B Mistry. Studies on the distribution of lead andfactors affecting its distribution and translocation in plants . IndI Plant Nutrition 3 65. 1986

B M Bhu|bal and KB. Mistry. "Studies on the dissolution of majorIndian phsphate rocks in an acid soil". J. Ind Soc. Soil. Sci38 568.1986

B M Bhujbal and K.B. Mistry. "Reaction products of ammoniumnitrate phosphate fertilizers of varying water - soluble phos-phorus content . Fertilizer Research 10 59. 1986

V B Yadav a,nd K.B. Mistry. "Studies on reaction products oftetraammonium pyrophosphate fotmed in soils'. J. Ind Soc. Soil.Sci 38 795. 1986

V B. Yadav and K.B Mistry. "Evaluation of reaction products ofammonium ortho- and polyphosphate fertilizers as sources ofphosphorus for plants". J. Ind Soc. Soil. Sci. 34 : 67. 1986.

V V Athalye and K B Mistry. "Studies on the mobility of selenium inthree major soils of India". Proc. National seminar on recentadvances in soil research. 50th Ann. Convention of Indiansociety of soil science Anand. Dec 1985

T J D'Souza and V Ramachandran. "Plant uptake of calcium zincand manganese from four typical soils amended with municipalsewage sludge and city compost Proc National seminar onrecent advances in soil research ". 51st Ann Convention ofIndian sociely of soil science. Coimbaiore. Sept 1986

BN Vyas. Assumptions, problems and errors involved in N15tracer techniques" In National workshop on use of N 15 tracerin agricultural research. Bombay Dec 1986

B N Vyas. Use of nuclear technique in soil and fertilizer research".(in Hindi) National seminar on teaching and research innuclear sciences and technology. Bombay. Dec 1986

S Kannan Influence of phenylalanine and indole acetic acid on therecovery from chlorosis in iron deficiency stressed sorghumcultivars . Indian J Bot 9 114 1986

S Kannan. Foliar absorption and transport of inorganic nutrients '.(invited paper) CRC criiical rev in plant sciences 4 341 1986

S Kannan and M S Shaikh. "Abscisic acid induced root-tip swellingin sorghum Biochem Physiol Pflangen 181 207. 1986

IC Dave and S Kannan. Regulation of 32 P and 86 Rb transportfrom cotyledon to embryo axis by GN benzyladenine in germinating sunflower (Helianthus annuus L) . In National seminar inplani physiology Dharvad campus. Karnataka. Dec. 1986

S Kannan Salinity a phenomenon. Radio isotope aided researchon the prospects of titling plants to the salt affected soilsRegional coordination mooting. IAEA Vienna Doc 1986

A J Tamhankar K K Gothi and G W Rahalkar. Influence of Temperaiure induced Larval Diapause on phermone production byfemale khapra beetle Trogoderma granerium Everts

S V Amoiihcir Microbial control of Insecf Pests of EconomicImportance using Racillus thunngiensis var Kenyae . BARC 1296.1986

51

BARCANNUAL REPORT

1986-87

Status of Insect Pathology and Microbial Control in South EastAsia 4th Internaitotidl Colloquium on Invertebrate PathologyKoemgshoff Netherlands 18. Aug 1986 (Invited paper)

MS Chadha. G S Verma V Ramaknshnan and N B MulchandamInsect Feeding Deterrent and Growth Relardants from some

Indigeneous Plants 6th International Congress of PesticidesChemistry IUPAC. Ottawa Canada Aug 1986

M S Chadha. K M Lathika N K Josru and A Banerji. BiologicalEffects of Plumbagin on Red Cotton Bug ibid

SD Kokate Plant Insecticides Insec: Control' Teaching andResearch in Nuclear Science and Technology. BARC. Dec 1986

G S Verma V Ramakrishnan. N B Mulchandaru and M S Chadha.Role of Tylophera in Crop Protection . mid

A BanerjiandNC Goemer Synthesis of Rubraflavane A TnmethylEther Indian I Chem 258 304 1986

A Banerji Protective Roie of Plant Micromolecular ConstitudentsNational Symposium on Mjcromolecular Ecology Boss Institute.Calcutta Dec 1986

GS Verma V Ramakrishnan N B Mulchandam and M S ChadhaInsect Antifeeriant from Medicinal Plant Tylophera asthmatics.

Entomotogia Ezpenmentales at Applicale 40 99 ! 986

GS Verma V Ramakrtshnan. N B Mulchandani and M S ChadhaAntifeedant Compounds from Tylophera asthmatics National

Symposium on Insect Physiology. Ecology & Behaviour Tnvandmm.Feb 1986

G S Verma V Ramaknshnan. N B Mulchandani and M S ChadhaEffects of TyJophera asthmatics alkaloids «n Growth and Deve

lopment of tobacco caterfillar Spodopiera litura Proc IndianNational Sci Acad 52 405 1986

A Banerji Minor Pathways to Isoprenoids National Symposiumon Advancement in Organic Chemistry, University of KalyaniKalyani WB Feb 1986

K M Lathika Biological Effects of Plumbagin on the development ofRed Cotton Bug Dysdercus Koenigh National Symposium onInsect Physiology Ecology and Behaviour Tnvandrum Feb1986

P M Nair Modern trends in photosynthesis research towardsharvesting solar energy and A novel pathway for the synthesisof solanidine in green potato tuber chloroplast Silver Jubileelect'ire series of Depi of Biochemistry Kerala University July1986 (Invited talk)

P M Nair Biochemical mechanism of extension of dormancy ingamma irradiated potatoes 55th Annual meeting of Society ofBiological Chermsis Tnvandrum Dec 1986 (Invited talk)

M S Netrawali Toxicology of food colours a need for reappraisalNational Conference on Environmental Mutagens and Carcinogens Environmental Mutagen society of India. University ofMadras Feb 1986 (Invited talk)

A A Lakdawalla and M S Netrawali. "On the mutagenic potentials ofErythrosine a synthetic food colourant", National Conference onEnvironmental Mutagens and Carcinogens. University o! Madras.Feb 1986

V Satyanarayan and P M Najr. "Purification and reaction mechanismof potato succinate semialdehyde dehydrogenase". 55th Annualmeeting of the Society of Biological Chemists. Tnvandrum. Dec1986

JP Machaiah and UK Vakil. "Effect of protein deficiency on lipidcomposition of peritoneal macrophages". ibid.

V S Rao and U K Vakil. "Enrichment of bread mix with bengal gramflour 19th Annual meeting of the Nutrition Society of India.Hyderabad. Nov 1986

SN Doke and V, Ninjoor. "Shrimp alkaline proteinase . isolationand characterisation". 55th meeting of 1he SBC. Tnvandrum,Dec 1986

S V Chadi. S B Warner and V IMinjoor. "Preparation and propertiesof fish protein hydrolysale from dhoma. an underutilized fish".Diversification of Post harvest Technology for Low Cost fishCIFT Cochin 1987

UK Vakil Enumeration and structural assessment-of peritonealmaciophages during progressive protein deficiency in rats".International Symposium on Nutritional regulation of immunityand infection . Toronto. July 1986

D P Nerkar J R Bandekar. "Biological activity of radiation detoxifiedendotoxin of S typhimurmm' . Proceedings of International Sym-posium on Endotoxins structural aspects and immunobiologyof host responses". Tiva del sole. Glov Glovinzzo. Italy. May 1986

P Thomas. SR Padwal Desaj. AN Snrangarajan, MR Joshi. M.T.Janave. S R Bhonde and SM.H Qadri. "Pilot scale storage testson the efficacy of gamma irradiation for spout inhibition ofonions under commercial storage conditions". J Food SciTechnol 25 79 1986

P Thomas and MT Janave. Isoelectric focusing evidence forbanana isoenzymes with mono and phenolase activity", ibid, 51.384 1986

P Thomas Radiation preservation of loods of plant origin Part 3.Tropical fruits Bananas mangoes and papayas". CRC Cnt RevFood Sci Nutr 23(2). 147. 1986

P Thomas H.idiation preservation of foods of plant origin part 4.subtropical fruits Citrus, grapes and avocados CRC Cnt Revfood Sci Nutr 24(1) 53 1986

A Sangeetha N K Ramaswamy and PM Nair. Partial purificationand some properties of a latent CO reductasc from green potatotuber r.hioroplasts Lur J Biochem 153. 509. 1985

V S Narayan and P M Nair. The 4 aminobutyrate shunt in Solanumtubersoum Phytochemistry 25. 977. 1986

52

BARCANM \ l . RII'OKI

1986-87

K K Usaf and P M rjair Evidence for the discrete synthesis of polyA ' RNA and new polypeptides in , irradiated potato bud tissueincompanson with wounding induced synthesis". Ind J BiochemBiophys 23 162 1986

V Satya Narayan and P M Ndir Enhanced operation on 4-arrunobutyr ;.e .shunt in irradiated potato tubers. Photochemistry 25.1801 1986

S G Shirsat arid P M Nair The mode of inhibition of the biosynthesisof phenyiaianine ammonia lyase by its product cinnamic acid inaging potato parenchyma J Biosciences 10. 393. 1986

A Sanyeetha and P M Nair An immobilized system for thecontinuous production of formic acid using thylakoid membrane.and carbon dioxide reductase from potato tuber chloroplastsPhoto Biochem Photo Biophys 13 73 1986

SC Tripathi A Ramanujam MN Nddkarni and C BandyopadhyayThin layer chromatographic separation and determination of

dibutyiphosphonc acid in a mixture of monobutyl phosphonracid and tnbutyl phosphate Analyst 111 239 1986

A S Gholap C B.indyopadhyay and G B Nadkarni. Aroma development in mango fruit J food Biochem 10 217 1986

B V K Rao and C Bandyopadhyay Changes in muscle lipid composition of -white Pomfrete (Stromateus cinereus) during icetemperature storage ) Food Sci Technol 23 334 1986

Aruri Shanna SR Padv/al Desai and GB Nadkarni Possibleimplications of recorocity between ethylene and aflatoxin biogenesis Appl Environ Morrobiol 44 79 1985

Arun Sharma and S R Padwai Dfsai. On the relationship betweenpellet size on afiatoxin yield in Asperqillus parasiticus Biotechnoi Bioenq 27 1577 1985

A run Shanna and S R PadwaJ Des.il Biogenesis of some antibioticsin presence of 2 chioroethylphosphonK; acid Appl EnvironMicrobiol 52(A). 605 1986

K Krishnamurthy KSS Sarma and DR Bonqirwar RadiationSafety features of transportable moving bed onion irradiatorBulletin of Radiation Protection 9 25 1986

P Hankumar and V Ninjoor Influence of starvation. Triton WR 139and ' "I HSA on rat liver ivsosomes J Bioscitnces 10 44 1986

SV Sherekar SN Dolr MS Gor<? and V Nirjoor Protemases oftropical fish and their role in autolysis Indian J L'xptl Biol 24440 1986

P Hankumar and JP Reeves Lysosomal proton pump NewI n s i ' l h t 1 - . i n t o i r i l . I I H I M i i i h r . u i f ' T I . I I I . | > o r 1 P r o c e s s e s <•&., G

Poste and ST Crooke Plenum Press New York 1986

R P Scott V Nmioor and P N Snvastava Isolation and character!zation of cathespm B from rabbit testes J Reprod Feri 71.67791987

V Ninjoor and P N Snvastava. Partial Purification and propertiesof lysosomes fiom rabbit testes' Andrologin 19. 80. 1987.

AS Kamat. Sequence of events during germination ol bacteria]spores not requiring heat activation'. Biome 1. 6, 1986.

A S Kamat. S P Nene. DP. Nerkar and G.B. Nadkarni. "The nature oftoxins produced by B. cereus BIS-59 . J Food Safety 8. 71. 1987.

A S Kamat N F Lewis and D S Pradhan. "Mechanism of Ca-"1' anddipicohnic acid requirement for L alamne induced germinationof B cereus BIS 59 spores Microbios 44. 33. 1985

A S Kamat and D S Pradhan, Involvement of calcium and dipicobnicacid in icsistance of B. cereus BIS 59 spores to ultraviolet andgamma radiations Int J Rad. Biol 51.7.1987

V Sen DP Nerkar DS Joshi.AS Kamat and N F Lewis in vivoeffect of Lipoteichoic acid on Biochemical function of peritonealmacrophages Ind J of Exp Biology 24. 159 162. 1986

J R Bandekar R Chandei and D P Nerkar. Radiation control ofVibrio parahaemolyticus in shrimp J Food Safety. 68. 83 881987

DP Netkar and JR Bandekar. Stimulation of macrophages andantitumor activity of radiodetoxified endotoxin'. Microbio. Immunol30 893 1986

R Chandct KB S.unis and NF Lewis. Role of thymus derivedlymphocytes in acquired immunity to salmonellosis in mice '.Microbiology & Immunology 30 9001 9006. 1986

R Ohander and NF Lewis. Lipopolysacchande protein complexas a potent vaccine agamM salmonellosis". J of Food Safety 889 1987

A C Pansare N F Lewis and V Venugopal Characterization ofextracellular proteases of Aeromonas hydrophila". Agri BiolChem 50 1743 1749 1986

V Venugopal M D Alur and D P Nerkar. "Storage stability of nonpackaged irradiated Indian mackerel (Rasurelliger Kanagurta)in ice I Food Science 52 507 509. 1987.

MS Netrawali and KAS Nair. Enhancement of DNA repair ingamma n radiated spheroplasts and nucleic of dark-grown Euglenacells by the supernatant of light grown Euglena cells or theirchloroplasts Environ Exptl Botany. (USA). 26. 271. 1986

MS Netraw.ih SR Gandhi and MD Pednekar. "Effect of endosulfannirilathion and permethnn on sexual life cycle of chlamydomonasremhaidti Bull Environ Contain Toxicol (USA). 36. 412. 1986

R Kaul SF DSouzaandGB Nadkarni. Co immobilized glucoseoxid.ise E coli coniugate system for the hydrolysis of lactose inmilk and its preservation '. J Microbiol Biotechnol I. J2. 1986

BS Kubal SS GodboleandSF DSouza. Preparation and charactenzation of magnetic hen egg white beads containing coimmobilized glucose oxidase. magnetite and MnO, . Indian )Biochem Biophys. 23 240. 1986

53

BARCANNUAL REPORT

1986-87

S F D Souza. I S Meio. A Deshpande and G.B. Nadkarni. Immobili-zation of yeas! cells by adhesion to glass surface using polyethyleneimine . Biotechnol Letts 8. 643. 1986

K Sankaran Endgoenous protein inhibitor of mitochondiral c AMPphosphodiesterase in tumor bearing rats" Indian J BiochemBiophys 23 66 1986

Vinay Kumar K Sankaran. and KK Kannan. "Crystallization andpreliminary data of Indian buffalo erythrocyte carbonir anhydrase'.I Mol Bio! 790.729 1986

A Deshpande SF D Souza and G B Nadkarru "Immobilization ofmicrobial cells in geltin using gamma irradiation" Indian JBiocherr, Biophys 23 353. 1986

JS Melo SF DSouza and GB Nadkarni. "Ocium basilicum seedsas a pellicular support for immobilizing cells Biotech Letts. 8.885 1986

A Debhpande K Sankaran. SF DSouza and GB Nadkarni. Ar.ipid method for the purification of D ammo acid oxidase ofTncjonopsis vanabilis by hydrophibic chromatography". Biotechnology Techniques 1. 55 1987

S R Ufiupa and S F D Souza. Microbial Adhesion and Aggregation(ed KC Marshall) Indian ! Experimental Biol 24.201 1986

GB Nadkarni Proceedings of the 16th FEBS Congress . (cd Yu AOvchmmkov/. Indian I Exp Biol 24 330. 1986

PS Chdiihan On the role of whole mammsls m Environmentalr/'jt.igenesis 15 years in retrospection. Environmental Mutagenesis and Carcinogenesis (Eds NK NotaniandPS Chauhan)BARC Bombay 1986

PS Chauhan RC Chaubey and K Sunaaiam. Bone marrowmicronucleus test in Swiss male mice International Programmeon Chemical Safety in vivo Assays (Eds J Ashby et al) CambridgeUniversity Press U K Vol 1. Chapter 31. 1 202 1986

PS Chauhan. M Aravmdakshan and K Sundaram. DominantLethal Mutation test in Swiss male mice'. International Programmeson Chemical Safety in vivo Assays (Eds J Ashby et al )Cambridge University Press. U K Vol II. Chapter 31. 2133 1986.

PS Chaunan ana K Sundaram "ScoDe of genetic toxicology indeveloping countries Bulletin of Sciences 2fl). 36. 1986

? S cnauhan and K Sun^aram Genetic Toxicology of environmentalchemicals A perspective Bulletin of Sciences 2(1). 41 1986

P S Chauhan Meeting the challenge of accidental chemical exposureviews of a Bilogist Working paper Meeting of the Intermirasterial Working Group on Prevention. Control and Management ofChemical Accidents. Ministry of Environme:;' and Forests. Govtof India. Baroda Oct 1986

P S Chauhan. "Scope of Genetic Toxicology Monitoring in developingcountries". IARC/IPCS/lAEMS/International Couse on Health Moni-toring of the Human Population exposed to Mutagens and/orCarcinogens. Bombay. Nov. 1986

M Aravindakshan. PS. Chauhan and K Sundaran. "Benzo(a)pyrene induced dominant lethal mutations in male germ cells ofSwiss mice'. National Conference on Environmental Mutagensand Carcinogens. Madras. Feb. 1986. (Book of Abstracts)

M Aravindakshan. PS. Chauhan and K. Sundaram. "Dcmmant lethalmutations based on scoring of uterine contents at mid andterminal stage of pregnancy. XII Annual Conf EMS1. Hissar. Feb.1987 (Book of Abstracts)

HN Bhilwade. RC Chaubay, P S . Chauhan and h Sundaram."Migration of nucronucleated erthrocytes from bonemarrow toperipheral blood in gamma irradiated mice", ibid

R C Chanbay. P S. Chauhan and K Sundaram. "The use of bone'marrow micronucleus assay to evaluate clastogemci y of ben2o(a)pyrene and its non-carcinogenic analogue pyrne in mice".National Conf on Environmental Mutagens and Carcinogens.Madras. Feb 1986 (Book ol Abstracts)

R C Chaubay. PS Chauhan and K Sundaram. Low do:;e-mutageniceffects of hycanthone. MMS and EMS in mouse bonemarrow",ibid

M Kumar M Seshadn. T.B Poduval. PS Chauhan and K SundaramChromosomal constitution and sister chromatid e> change ana-

lysis of munne lymphosarcome". National Conf on Environ.Mutagens and Carcinogens. Madras. Feb 1986 (Book of Absts.)

OPD Noronha. "Solvent extraction technology of "'""Mo "'""Tcgenerator system". An Indian experience Process design consi-derations Isotopenpraxis. 22. 53. 1936

OPD Noronha "Solvent extraction technology of ''''Mo "'""Tc generator system Radiation dose and personnel exposure considerations ibid. 22, 58. 1986.

OPD Noronha and A B Sewatkar. "Comparison of three RE agents'"""Tc phyiate. '"""Tc sulphur colloid and "'""Tc-Sb^S, colloid In

the rodent species". Nuclear Medicine Biology (InternationalJournal. Part B). 13 67 73. 1986.

OPD Noronha Biliary propensities of technetiurn-9Emi glucoheptonate I Nucl Med 37. 1647. 1986

AM Samuel G V Kadival. MD Ashterkar and AS Dhalla, "Evaluationof Nuclear Techniques in tuberculosis", Annals of National Acadof Med Sci-21. 150. 1986

GD Nadkarni KN Pestonjamasp and CS Soman, "Efficacy ofpropylthiouracil treatment in carbon tetrachloride induced livercirrhosis in rate". Indian I Gastroenterol. 5(3). 183. July 1986

54

BARCANNTAL RKPORT

1986-87

G D Nad<\arni and N B D souza. Hepatic superoxide dismutase,catalose system and lipid peroxidation dunng turpentine indusedacute inflammation in rats'. Indian ) Biochem Biophys . 23. 238.Aug 1986

G D Nadkarm and K N Pestomjamsp. "Effect of long term feeding ofeggs on liver and plasma protein". Indian 1 CUn Biochem 1. 8.1986

D H Shah and 0 P D Nuronha. (Eds) Proceedings of a seminar onThyroid Cancer. Role of radionuclides in diagnosis, managementand treatment". Radiation Medicine Centre. BARC. 1986

D H Shah. M N Devdhar. R D Ganatra. R N Kale. S S Virdi and M DDeshmukh. A combined detection and drug susceptibility testingof Mycobactenum tuberculosis in smear positive sputum samplesusing biphasic vial system '. Ind J Med Res 83 123 1986

R K leevanram. D H Shah. S.M. Sharma and RV Ganatra. Influenceof initial large dose on subsequent uptake of therapeutic radioiodine in thyroid cancer patients". Nucl Med Biol 13. 277. lnt 1Rad Appln Inst Part B. 1986

D H Shah. A Kumar. S R Dandekar. U Vijayan. B A Krishna andS M Sharma. Serum thyroglobulin in management of thyroidcancer . Proc of an International Symposium t>n Nuclear Medicineand related medical applications of Nuclear Technique m developing countries. Vienna. 1986

R K leevanram. D H Shah. S M Sharma and R D Ganatra "Usefulness of the determination of specific actvity of thyroglobulin inthe management of thyroid cancer". Proc of a seminar onThyroid Cancer Role of radionuclides in diagnosis, managementand treatment eds DH Shah and OPD Noronha. Pub RadMed Centre BARC 73 1986

A A Narkar R K leevanram P Sundercsan G P Phonclke R DGanatra and DH Shah Immune aspects of thyroid cancer",ibid 80 1986

DH Shah Ajay Kumar SR Dandekar U Vijayan. B A Krishna andS M Sharma Serum thyroglobulin in management of thyroidcarcinoma ibid 61 1986

SM Sharma and HA Krishna. Radioiodine therapy for cancer ofthyroid Proceeding of an International symposium on NuclearMedicine and related medical applications for nuclear techniquesin developing countries Aug 85. 335. IAEA, Vienna

S S Dewan. Incidence of thyroid cancer in solitary and multinodulargoitre'. Proc of a seminar on Thyroid Cancer . Role of Radionuclides in diagnosis, management and treatment eds D H. Shahand OPD Noronha. Pub Radiation Medicine Centre, BARC. 15.1986

P Ramanathan Nuclear imaging of thyroid nodules ". ibid. 33 1986

UR Raikar. Ultrasound imaging of nodules of thyroid' .ibid. 44 1986

B A Krishna. Large dose wholebody radioiodine scan in differentiatedthyroid cancer-concepts, usefulness and pitfalls", ibid, 159.

U R Thakare, D ri Shah and U Vijayan. "Increased Thymidinekinase level in firbosarcoma of swiss mice treated with thyroxine'Ind J Clin Biochem 1986

AM Samuel. AS Dhalla and T.MS Mazevello. "Myelin BasicPmteins determination in tuberculous meningitis " Proc of anInternational Symposium on Nuclear Medicine and related medicalapplication of Nuclear Techniques in developing countries Vienna.441 1986 IAEA

S M Sharma Radioiodine therapy for cancer of the thyroid".Proceedings of the seminar on Thyroid cancer; Role of radio-nuclides m diagnosis management and treatment held in March.1985 ods DH Sh.ih. &0PD Noronha. Pub Radiation MedicineCentre BARC 1986

S M Sharma and U H Raikar. Teaching and training programmesin nuclear medicine lor medical and paramedical personnel atthe Radiation Medicine Centre. Bhabha Atomic Research Centre".Proceeding of an International Symposium on nuclear medicineand related medical applications of nuclear medicine techniquesin developing countries. August. 1983. 587. IAEA-Vienna. 1986.

55

5. RADIOISOTOPES

BARCANNTAL RKPORT

1986-87

5-1 Radioisotope Production

During the year 1000 samples of various targetmaterials were irradiated in the Cirus reactor lorproduction of radioisotopes and for neutron activationanalysis

A total of 65.000 consignments of radioisotopesand related equipment valued at Rs 2 54 crores weresupplied to various users in the country and abroadImportant consignments were 11 cobalt-60 teletherapysources supplied to cancer hospitals. 4 gamma chamberuruts housing hjgh intensity cobalt 60 sources suppliedfor radiation research and a 9 25 • 10'4Bq (2 5 -10*Ci) cobalt 60 source supplied for a gamma irradiation facility set up at Sri Ram Institute for IndustrialResearch

Work on the project for the utilisation of Dhruvareactor foi isotope production has started an lnadiationcontainer for irradiating xenon gas under pressure forthe production of iodine-125 has been fabricated andtested Processing facilities incorporating a modifiedsequential scheme for fission products separation arc-being sot up

5-2 RadiochemicalsVarious reactor produced isotopes totalling 3 3 •

10 Bq (9 • 10Ci) of activity were processed in 215batches during this year About 100 consignments ofphosphorus 32 labelled fertiliser were supplied foruse in agricultural research 935 tritium filled lightsources and 927 consignments of promethium 147activated self luminous compounds were supplied todefence establishments

5-3 Radiopharmaceuticals

Production and supply of radiopharmaceuticalswas continued and over 48.000 consignments of diflerent products were supplied to hospitals and medicalresearch institutions It is estimated that about 500.000patients would have benefited from the diagnosticand therapeutic use of these products Uses includedynamic imaging of various organs, advanced inve

stigations in cardiology and nephrology. A series oftechnetium complexes of fatty acid derivatives havebeen synthesised and characterised for possible applica-tion in myocardial perfusion imaging. The radioimmu-noassay screening test for the detection of hypothyroidism was evaluated and 5000 samples have beenanalysed The method has been found to be highlyeffective for the timely detection of hypothyroidism innew born children. Extension services were continued tobe provided to several hospitals and medical institu-tions from the regional centres for distribution ofradiopharmaceuticals set up at Bangalore in Kamatakaand Dibrugarh in Assam

5-4 Carbon-14, Tritium and Phosphorus-32Labelled Compounds

Labelled compounds of carbon-14. tritium andphosphorus 32 were supplied to a number of researchinstitutions in the country (or the use in geneticengineering, biochemistry, drug research etc Twoimportant phosphorus 32 labelled nucleotides, whichhavf; significant demand, were produced on a regularbasis for supply to 40 users working in the field of bio-technology The construction of the new LabelledCompounds Laboratory at Vashi. New Bombay, isneaiing completion and the laboratory is expected tobo commissioned during 1987 The laboratory for theproduction of P 32 labelled nucleotides being set up atthe piemi.ses ol CCMB. Hyderabad, is at an advancedstage of construction and will be commissioned shortlyA wide range of labelled compounds and labellednuclcoiides required for research in biosciences willbe produced indigenously when these laboratoriesbecome fully operational

5 5 Radiation Sources

A total of 2350 consignments of sealed radiationsources with a total activity ol 3 03 - 10lsBq(8-2 -10'CO were supplied lo various users These include5 2 - 10"Bq M 4 • 10'Ci) of iridium 192 sourcessupplied for use in industrial radiography and 9 25 '10"Bf(l2 5 • 104Ci) of cobalt 60 sources for use inmdustiy and research and 15 • 10"Bq (4 25 -

56

BARCANMAI. RKPOKT

1986-87

104Ci) ol cobalt 60 teletherapy sources for cancertherapy Twenty three numbers of tritium targets andsources were supplied lor use in accelerators, electroncapture detectors etc

5-6 Radioisotope Applications

Tracer Applications in Industry and Hydrology

Radiotracer investigations were carried out at apetrochemical complex near Bombay to defect theleaks, if any in the heat exchangers of the DMT plantThe performance of the stripping column in the phenolproduction plant of a chemical factory near Bombaywas evaluated using radioiiacer techniques and themalfunctioning section was identified Residence timedistribution studies in the precalcinator of a cementplant were carried out using short lived radiotracers

The study of salinity of groundwaters in coastalMinjur aquifer near Madras. Midnapore district ofWest Bengal and in certain parts of Haryana werecarried out using isotope techniques The circulationof geothermal v;aters at Tatapani in Madhya Pradeshwas studied by measuring the environmental stableisotope and the tritium content of the geothermalv/aters

Radiation Technology

A cobalt 60 radiation facility housing 9 25 •10-Bq (2 5 • 10"Ci) of cobalt 60 was designed andcommissioned at Shn Ram Institute of Industrial Research Delhi The facility is being used for radiationpolymerisation studies The design of the radiationsterilization plant to be set up at the Kidwai MemorialInstitute for Oncology. Bangalore was completed Theconstruction of the building and fabrication of equipmentare in progress and the facility is expected to be readybefore mid 1987

Negotiations are underway for setting up of twomore radiation plants in the country for sterilisation ofdisposable medical products. The civil engineeringwork of Sewage Slucjge Irradiation Facility at Barodahas been completed and the installation of the processand control equipment is in progress. The facility isexpected to be commissioned by May 1987.

Radiation Sterilisation of Medical Products

The Isomed Plant continued to operate satisfactorilyand offered gamma irradiation service for sterilisationof medical products to about 300 user industries. Atotal of 5840 cu metres of a variety of medical productswere sterilised The sale value of radiation sterilisationservices rendered totalled Rs. 30 lakhs. In order topromote the use of radiation sterilised products inmedical practice, ready-for-use products such as dra-pes and surgical kits were produced and. supplied toseveral hospitals on a limited scale Research anddevelopment work for extending the scope of radiationsterilisation technique to pharmaceutical products wascontinued Physio-chemical investigations were carriedout on a number of pharmaceutical products and rawmaterials to establish the feasibility of sterilising themby radiation

Industrial Radiography/Nudeonic Gauging

Specialised radiography service was provided forinspection of welds on equalising line and bypass lineto the Tarapur Atomic Power Station. Dhruva. and toNeutron Physics Division for the installation of aneutron spectrometer being fabricated by them Agamma transmission gauge using cesium-137 sourcewas developed and successfully used for locating theposition of fuel element in the fuel channels of theDhruva reactor

57

RADIOISOTOPES AND IRRADIATION SERVICES FROM BARC (1986)

(Figures in Rupees Lakhs)

Medicine

(157-3)

Research &Agriculture

TOTAL SALE VALUE OF RADIOISOTOPES SERVICES OFFERED DURING 1986 :Rs 254 LAKHS

1980 1981 1982 1983 1984 1985 19B0

Teats

VOLUME OF MEDICAL PRODUCTS STERILISED AT ISOMED PLANT

1980 1981 198V. 198S 1«H'«

Tcart

Publications

BARCANNUAL RKPORT

1986-87

TS Murtliy Radiation Energy Sources and their availability mIndia Pruc National Seminar on Applications oi RadiationEneiqy in Industry and Research. Delhi.

C M.ithai. A Dash. KR Balasubramanian. TS. Murthy. Separationol Rn from Fission Product Solution". Proc of D A E Radio<:MM!i!stiy ,ind Radiation Chemistry Symposium. Tirupati

I S Murthy Status of Radiation processing in India". SpecialScinin.it on Radiation and Photoclieimstry. BARC

1 K Miirtiiy Status of Radiation processing in India" . -2nd meetingof i UNDP/RCA project) National Coordinators for RadiationpmcessiiKj Ku.ila Luinjnir Malaysia

h hii^iin.mr.iitliy KSS Sarma and DR Bongirwar "RadiationSafely of a Tiansportable Moving Bed Onion Irradiator' . Bulletinof Kadiation Protection. 9. No I & 2 Jan June 1986

K Kn^hMHiiiurtliy and K S S Sanna Mathematical and ComputersAids for the Optimisation of Gamma Irradiation systems . BARC1.865 1986

K Krishnamuilhy Irradiation Plants lor Medical Products Steril)sation and Material Processing". Nat Seminar on Appln of RadEnergy in Industry and Research Shn Ram Inst of Inci ResearchNow Delhi March 1986

K Knshnamurthy and AD Naik. "Irradiation Plant for SewageTreatment in India and Abroad", ibid.

D A Dabholkar and K. Knslinamurthy et al. "Radiation ProcessingResearch Review . ibid .

K Knshnamurthy Nuclear Techniques in Pollution Control-Workshopon The Ganga as a Resource. Allahabad". National Academy ofSciences. India. March . 1986

K Knshnamurihy. Parametric Relationships for Gamma Dose andIrradiation Homogeneity in a Sewage Sludge Irradiator". Int JRad Phy Chem . 28. No. 4. 381. 1986

h Krishnamurthy. Process Irradiators Techno Economic AspectsManagement Appraisal Seminar on Application of Radiation inIndustry". Bombay. BARC/NAARRI/OPPI Sept 24. 1986

K S Aggarwal. Gamma Irradiators for Research and Development"Paper presented at the National Seminar on Applications of Radiation Energy in Industry and Research. Sri Ram Institute forIndustrial Research. Delhi. March 1986

VK Iya. K Knshnamurthy and A B Majali Treatment of Hue gasesNeed and Poiential for advanced technology in India . ConsultantsMeeting on Electron beam processing of combustion flue gasesat Karlrushe. FRG. Oct 1986

SV Navada. SK Jain. K Shivanna and S.M. Rao. Application ofenvironmental isotopes in groundwater'. Indian J Earth Sciences13. 2. 223. 1986

NGS Gopal. KM Pate! and G Sliarma. Effects of Heat ETO &GriimiM Radiation on PsylmmHusk Indian I PharmaSci March1987

T V Ramamurthy and K V Viswanathan, Studies on :""C0. exchangereaction with p fiurophenyl acetic and Microsynthesis of Carboxyl:JC labelled p flurophenyl acetic acid ". J Radionaal Nucl ChemLettrs 104. 13. 1986

Harish Chander. T V Hamamurthy -and K V Viswanathan. "An.impioved synthesis of I4C labelled glycerol using sodium borohydride . J. Label Compds. Radiopharm.. 24. 49. 1987.

D Padmanabhan. R. Lakshmi. A.U. Garana and K.V. Viswanathan.' Studies on self radiolytic decomposition of tritium labelled ATPof different specific acitivity". Proc. DAE/BRNS symp. on Radio-chemistry and Radiation Chemistry Tirupati. 148. 1986.

S. Mallika. B Muralidharan and K V Viswanathan. "Degradation ofU MC D Glucose during displacement with dilute acid", ibid.194.

TV Ramamurthy and K.V Viswanathan. "Studies on reaction oftryptophan with hydroxylamine O sulphonic acid using I4Clabelled tryptophan", 23rd Annual Convention of Chemists.Annamalainagar. 1986.

S Mallika. B Muralidharan and K.V Viswanathan, "A new synthesisof uniformly MC labelled glucosamine". Sixth meeting of IndianCouncil of Chemists,, Madurai 1986

S Mallika. B. Muralidharan and K.V Viswanathan. "A facile prepa-ration of U 1JC i. /f-Metasaccharlnic acids". 1 lth RadiochemicalConference in Marianke Lazne. Czeckoslovakia. 1987

N Ramamoorthy. P. Vanaja. Saraswathy S. Iyer and R S Mani.Development of a new "Tc generator using neutron irradiated

titanium molybdate as column matrix'. IAEA's Seminar on Radio-nuclide Generator Technology. Vienna. Austria. Oct 1986

N Ramamoorthy. M K Das. B.R. Sarkar and R.S. Mani. "Productionof "Tc and "'"Tc via the "'Nb (-/ , xn) Reactions". Journal ofRadioanalytical and Nuclear Chemistry. Articles 98. 121. 1986

T. Jyotsna. M R A. Pillar N.Pal. J.H. Gupte. C.N. Desai and R.S. MamSimultaneous assay of Triiodothronine and thyroxine in serum 'ibid Articles 97. 45, 1986

Grace Samuel. MR A Pillai. U.K. Singh. CN Desai. RS. Mani. Radioimmunoassay of somatotropin using second antibody polyethylene glycol combination separation system". ibid Articles 97309. 1986

T Jyotsna MR A Pillai. JyotiH Gupte R S Mam Carbodimide usedin couphivi tniodothyronme antibody to cirboxymethyl cellulosepowder foi solid |)hase rariioimmunoassay . Clinical Chemistry32 229 1986

59

6. REACTORS

BARCANNUAL REPORT

1986-87

6-1 Dhruva Reactor

Based on the results obtained from detailed ana-lysis of fuel vibration from reactor and from mock uptests conducted on fuel element in the flow test stationin Dhruva. design of fuel assemblies was modified,since the earlier type of fuel suffered damage due toexcessive vibration. After loading the reactor withmodified fuel assemblies reactor operation was resumedon November 25, 1986 and power level was raised to25 MW. Performance of fuel assemblies and otherreactor systems was tested at this power level andwas found to be satisfactory. Power level was subse-quently raised to 40 MW, and will be further raisedprogressively after gaining experience. Radioisotopeproduction was also started soon after raising powerlevel to 25 MW.

During the initial operation phase of Dhruva, itwas observed that coolant heavy water was gettingturbid due to erosion of the aluminium cladding of fuelassemblies The turbidity also contained uranium andfission product activities. The turbidity and associatedradioactivity was successfully removed.

Design, fabrication and installation of special safetylock mechanisms in all fuel channels, commissioningof one of the main heavy water coolant pumps, with aprototype grease lubricated return stop unit, shiftingof check valves of main coolant pumps to a zone ofstreamlined flow, installation of split bulges in themodified fuel assemblies and installation of piping andinstrumentation for emergency core cooling systemwere some of the important activities carried outduring this year. Readability of the failed fuel detectingsystem was improved by direct display of linearisedsignals.

6-2 Reactor Engineering

Engineering R & D support to the 235 MWe and500 MWe Pressurized Heavy Water Reactor (PHWR)system in different areas ranging from analysis, design,experimental development and testing of several im-portant systems, equipment and components, to devi-

sing and proving schemes for solving some criticaloperating problems of our nuclear power plants wascontinued. Development of fuel handling system for500 MWe Prototype Fast Breeder Reactor and designand engineering of facilities for utilisation of Dhruvawere some of the other important activities pursued.

Zirconium-2 5% Niobium alloy is the pressuretube material chosen for future 235 MWe and 500MWe PHWRs. Experimental development of the rolledjoints between pressure tubes made of this alloy andend-fittings for 235 MWe PHWRs was continued. On thebasis of the results, the design of the joint was frozerto enable further machining of the end fittings for KAPP-2.A computer code was developed for carrying outcreep analysis of PHWR coolant channels. This codewas used to predict the limit on the life of some MAPP-2 coolant channels with displaced garter springs. Thisanalysis is useful in identifying the stage at whichrepositioning of these garter springs would need to becarried out. Experiments are being carried out todevelop a mechanical technique for carrying out suchrepositioning. Work has been initiated to examine thefeasibility of detection of garter spring movementthrough analysis of vibration signals measured onaccessible parts. A compact mechanical snubber wasdesigned and is being tested for incorporation in theenergy absorber devices of the PHWR coolant channels.Use of this snubber will eliminate the need for carryingout periodic creep adjustment of these energy absor-bers involving considerable expenditure of man-rems.

Development work on liquid poison shut-off systemfor NAPP was continued to increase its reliability.Assembly of the Zircaloy-2 to stainless steel transitionpieces to be incorporated in the liquid poison shut-offchannels of NAPP-1, was carried out by using thinsleeve rolled joint technique developed earlier. ThePrimary Heat Transport (PHI) pump test facility whichhad been used for qualification and acceptance testingof NAPP-2 PHT pumps was adapted for carrying outlong term endurance testing of these pumps. Thetesting of KAPP-1 PHT pumps is in progress. The firsttwo fuelling machines of NAPP are in an advancedstage of testing using the Integral Thermal Facility.

60

BARCANNUAL REPORT

1986-87

The engineering facilities set up earlier were usedto solve some critical operating problems of powerreactors. A special feeder isolation plug was designedand developed for blocking the flow in one of MAPP-2feeders to permit the repair of a leakage. An incidentcausing a prolonged shut down of MAPP-2 occurredwhen a pair of spent fuel bundles was trapped withinthe fuel transport port. This situation was analysed,and gadgets and procedures required to retrievethese bundles were developed and tested, and opera-tion personnel were trained on mock up facilities setup for this purpose. A special procedure was developedto solve another operational problem at RAPP-2, in-volving a fuel bundle caught in the snout region of thefuelling machine.

A proposal to operate RAPS-1 in a partial coremode which would eliminate hot coolant channelsaround and above the defect zone in the end shieldwas examined in detail with the objective of evaluatingits engineering feasibility. Detailed calculations onheat generation, temperature and stress distributionin various structural parts were carried out. Work is inprogress for developing a sealing scheme which doesnot call for removal of the endshield lattice tubes.

In the field of thermal hydraulics and safety studiesa computer code was developed, and validated bycomparing with experimental data for carrying outtransitient analysis of thermosyphon. An analysis wascarried out for a Standard Problem Exercise, sponsoredby IAEA, pertaining to a partial cold leg break accident.Design of a chamber for testing instrumentation andcontrol canbles under simulated loss of coolant accidentconditions was completed. Hot commissioning of theBoiling Water Loop is in progress

Safety and reliability analysis of a majority ofprocess systems and engineered safety features inNAPP was completed. In the context of the Chernobylaccident detailed safety evaluations of PHWR wascarried out. An exhaustive list of possible reactivityexcursions was drawn up and the worst cases werestudied in detail. The source term for Indian PHWRswas estimated for single, dual, triple and multiple

failure scenarios.

As a part of the design and analysis work for 500MWe PHWRs. the mechanical design of the pressurizerwas completed. Theoretical studies were carried outfor estimating the growth of liquid poison front afterinjection and corresponding negative reactivity inser-tion rates for various configurations. Preliminary as-sessment of the internal flow distribution in calandriawas completed. Flow coast down studies were carriedout. Detailed stress analysis of Primary Heat Transportsystem piping, reactor building under various loadingconditions, and several components-including calan-dria nozzles, end shields, header tee, seal disc andfuelling machine head-were completed.

For the first Prototype Fast Breeder Reactor, partof fuel handling system is being designed in BARC. Aquarter size model of the Inclined Fuel Translift Mecha-nism is under fabrication.

Work for the design and engineering of severalfacilities for utilisation of Dhruva was continued. Withthe completion of fabrication of the control systemboth the self serve facilities have been installed andare in the final stages of commissioning. Piping workof pneumatic carrier facility was completed. The PlugHandling Facility to be used with neutron beam holesis being assembled. Layout of the cold neutron guideshas been frozen and their design is in an advancedstage.

Detailed experimental investigations were carriedout on Dhruva system to simultaneously record vibra-tion signatures on a large number of points. Thesesignatures were analysed in detail with the objectiveof understanding the mechanism of vibration of Dhruvafuel.

Benefits that can be realised by recycling pluto-nium in RAPS and the possibility & usefulness ofirradiation of plain thorium oxide fuel in once-throughmode in a PHWR were evaluated through study of alarge number of cases. An IAEA Coordinated ResearchProgramme on 'Growth Scenario with PHWR usingThorium Cycle' was completed.

61

BARCANNUAL REPORT

1986-87

In connection with the setting up of the 2 MW in-pile loop in Dhruva reactor for carrying out fuelirradiation and other experiments, installation of equip-ment, piping, instrumentation control and electricalsupply work for out of pile testing were completed.Procurement of hanger supports, insulation etc. are inprogress Preparation of design and safety manualswere completed.

In the case of the 150 kW in-pile loop to be set upin Dhruva reactor, the flow sheet and control andinstrumentation logic were finalised. Some of theequipment like pumps, valves and pipes have beenreceived, (Th02-Pu02) cluster presently undergoingirradiation at Cirus has completed more than 8000MWd/Te burn-up and irradiation is still continuing.Design of container and handling assemblies for theirradiation of xenon in isotope tray rod position wascompleted.

6-3 Reactor Analysis

Development of the dynamic model for the NAPPsteam generator has been completed. This model hasbeen used to generate open loop dynamic responsesfor this type of steam generator for different disturbancesand to design the control strategies for feed watercontrol of these steam generators. Software develop-ment for the Training Simulator has been completed.System commissioning at the Nuclear Training Centre,RAPS, has commenced.

With the help of a comprehensive computer codedeveloped earlier, analysis of Loss of Coolant Accident(LOCA) in the PHWR has been undertaken. Simplifiedanalytical models have been developed to predict thetemperature transients in the core by accounting formetal-water reaction, clad melting etc.

The design response spectra and spectrum com-patible accelerogram for ground motion have beenevaluated for the seismic design of the proposedKakrapar Atomic Power Plant. Seismic design basis ofvarious other proposed PHWRs were reviewed.

For the proposed 500 MW(e) PHWR steady statecore thermal hydraulic analysis, the location of controlrods, shut off rods, and detectors were completed.

6-4 Experimental Reactor Physics

Shielding measurements with first laminar modelwere completed at Apsara, and measurements withtwo other models have been started. Design of shieldingmodel for advanced reactor was completed and feasi-bility of the measurement programme is being ascer-tained. Silicon ingots and discs were irradiated atCirus and Apsara reactors for studying neutron trans-mutation doping for the production of solid statepower devices by BHEL. The basic procedure forstartup of NAPP power reactor was finalized and somecheck quantifications are being examined. A systemfor on-line determination of coolant transit times inpower reactors is being tested. Improved methods forprocessing noise data from power reactor methodsand for assessing radiation damage in reactor materialsusing damage cross-sections and damage functionanalysis are being set up. Computation of capturecross-section of thorium was completed.

6-5 Reactor Control

A microprocessor based failed fuel detection systemcapable of detecting very small failures in fuel claddingand the control system for the pneumatic carrierfacility have been commissioned in Dhruva reactor. Aset of spare shut-off rod drive mechanism for Dhruvahave been manufactured, assembled and tested. Designof adjuster rod drivo-mechanism for Dhruva has beencompleted, and a prototype drive for functional testinghas been fabricated and assembled.

Kamini

Analysis for automatic power control of the reactorhas been completed and microprocessor based regu-lating and protection systems have been developed.Kamini would be the first reactor designed to haveDirect Digital Control scheme with a microcomputer

62

BARCVWl M RKI'OK I

1986-87

based reuulutinq system m which all operator comm.iP.ii.s iiii; entered through .1 colour CRT monitor andi-'.''.' bend combination All the required opeiator.ii nmis .in- prompted on. the CRT where the status of;iit' N'.irtui .states air also displayed When the operatorr'.'V's in ilie command to stall the reactor, a trip system'invk ;s automatically initiated and. upon its successfulcompletion the command is executed. The reactorprotection system (Trip Logic; System) also is microprocessor bused with exhaustive self-check featuresto enhance the safety of the reactor. Upon detection offault anywhere in the system it makes appropriateannunciation and bi incjs the 1 eactor to a safe shut ownstate An Integrated Process Information System usingthree microprocessors configured in two sybsystemsand two colour CRTs have been developed The firstsubsystem configured using dual redundant micro-processors, acquires plant trip, alarm and digital statusinformation, actuates the window annunciation andconveys change of status and event sequence infor-mation to the second subsystem The second subsys-tem acquires all process sensor information and pro-vides it to the opeiaior. organised as mimics, tablesand trend curves on one colour CRT It also providesalarm and event sequence information on anothercolour CRT and logs all events on a printer

Production of twenty mechanical shut-off roddrive mechanism for NAPP 1 reactor has been completed Design of shut off rod drive mechanism for 500MW(e) reactor has been completed and the fabricationof prototype mechanism is m progress.

A computer based control system along with themanual mode backup control system for testing twofuelling machines operating simultaneously in unisonor independently was developed and commissioned.The system built around a computer network of oneTDC 312 computer as master and two microcomputersas slaves, is being used for calibration and testing ofNAPP fuelling machine heads.

Fuel handling control system for NAPP-1 develo-ped around master-slave computer network with PDP

11 24 computer as master and microcomputer asslave has been developed and commissioned at site

A microprocessor based channel temperaturemonitoring system has been installed at MAPS II Thesystem, an improvement over the MAPS I system,provides channel to channel isolation among processinputs and uses non volatile storage for alarm limitsentered alter security checks through the CRT keyboardIn addition, it uses an improved algorithm for powercalculation and provides better presentation of infor-mation on the CRT

Design of four way solenoid valve for the purposeof indigenisation of MOROTTA valve has been comp-leted. A prototype valve for functional testing has beenfabricated and assembled

MHD Generation

The complete data handling system comprisingsix front end processors, one intermediate processorand a microcomputer has been commissioned at theMHD pilot plant at Trichy Besides, a microprocessorbased alarm annunciator for 168 parameters has alsobeen installed and commissioned at MHD plant, Trichy

Control Engineering

Thirty canned motors with special glass to metalseal have been fabricated and despatched for pressuretesting at Heavy Water Plant. Baroda Fiftyfour motorsare installed in HWP, Thai and these motors areoperating satisfactorily. Forty motors for shut off roddrive mechanism have been manufacured and mstalled. After successful testing of the first prototype 60kW canned motor, a canned motor of 96 kW rating forPHT pump has been fabricated.

Indian Railways have decided to equip 20 motorcoaches of the Bombay suburban train services withchopper controllers based on the know-how developedby BARC. This know-how is being transferred to M/sBHEL and M/s. ECIL for commercial exploitation Theengineering design has been finalised for regular

63

BARCANNUAL RKPORT

1986-87

production The development of microprocessor basedcontrol for chopper equipment has been taken up.Eight inverter systems each of 50 kVA capacity, havebeen fabricated and tested under simulated load con-ditions.

6-6 Reactor Operations, Services and Maintenance

Apsara and Cirus reactors continued to be operated in a safe and efficient manner. Apart from makingthe reactor facilii ss available for research radioisotopeproduction and irradiation, testing of fuels and1 othermaterials continued to be the major on-going activities.Fabrication of a spare calandria for Cirus was inprogress in Central Workshops. Over 2000 radioisotopesamples meant for irradiation in the Trombay reactors-

were evaluated for reactivity eifftct, heat productionand radiation shielding. Design assistance was provi-ded to users in industry for irradiation of silicon inCirus and trial irradiation of the same was successfullycarried out. For monitoring the transient status ofxenon-poisoning in Cirus reactor, a microprocessorbased xenon monitor system was developed andsuccessfully tested. Another microprocessor basedunit was designed, fabricated and commissioned inCirus for monitoring of gaseous fission products

Over 38.000 samples of water, heavy water, heliumand ion exchange resins were analysed for chemicalcontrol of Apsara, Cirus and Dhruva reactor systems.Assistance was also given to other units of DAE foranalysing over 200 samples of water, heavy water andion exchange resins

64

Publications

BARCANNUAL RKPORT

1986-87

V K M«-.'iu Ali MiiJ-hcr.c-i- and R R S Ycdav Parametric Study of\A(f%[.\i:v:-,fd Thermal Shock IAEA speciaiista meeting on ReactorPr'-sf-'iie Vf-ssel Behaviour under transient conditions caused!,y thermal shoct Prague Czechoslovakia. May 1986

J1 T.' '.'•,-.:> Anupani Sharma R Sugandhi and S Basu. Piping DataHi-tiK-..iJ System (PDRS; an integrated package to aid pipingMy.-.ijt BARC 1330 1986

D G BfiofT RB Gro.erar.dV VenkatRaj. Design and Development'A GditiDd rav D^nsitometer for Voil Traction Measurement inSteady Stale Two Pna^e flow Conference on TheimaJ SystemsBanaras Hindu University Varanasi 397. Veto 1986

7 V'T'^t Ra; and A W Date Analysis of Conduction ControlledRev.-etung oi Hu! Surface Based on Two Region Model 8thIrrt'Tii.itiun.jl Hcii Transfer Conference San Francisco Any!980

:-J K r/i-nl.i and V V-iiKit Raj Hc.it Transfer and Fluid DowB"!-f,iich Relevant to Indi.i s Nuclear Power Programmes'_u;r''Hi Rt^'virod in Heat and M.v.^ Transfer A Compendium anda !<-:,<v J>r;f! for Prol At- ,/, Rair.achandran 1986

Y .iit'.ila Bai iiru-.jm.ir i'Kitoni'iiti Recycling With Thormni in PHWRSeminar on f'.isi fv.xi ' .r lur-j Cycle 1GCAR feb 1986

YAW II.) B.ii.)riisiir;.ii S'-i! Sustaining Thorium Cyde in a High

Teniper.jiiiif yr.iprijV- R'.'.jctor IAEA Teciinicai Corninitiee

iT-.-tiriT on G;;s rrioiorl reactor and their application Julich Oct

AC I3.ibar.irri/. Kai-ccikar SUf.rj o1 PSA :n India !AEAAF:RAH7/orKh'ijjo:- PH'.VR SaMy Ar.aiy.sis May 1986

S K f/el.t-i .if»l Kaniaia iialaj< r ishnan Growth Scenario for HWR

v/irh-Tnoniim CyrJc:, JALA CRP Research Contract No 4025/RB

P K Vi)ayan D Sa.-.a rind V Vrnka! Raj "Studies on NaturalCcnvf-i.tiop ir> V'-rTicxl Annili H«-.i!rui fiotr. Bf low 8'h InlernatjonaiHeat Transfer Corference San f'rancisco Aug 1986

Kaniaia B.ilaKrishnar. Adequacy of Indian cross section libr.ines IT. the reactivity predictioii of thonum systems BARC 1297

A Y holili and P.d)esh Chandra luel Handling Concept fornunipi'im in pilr \",f\ mvr-ntory Seminar on last Rea'.ior fuel

Cy-i" IGCAR I'eh 1966

A K Kohii .inn Raiesii Chandi.i inclined Ti/ol Tiansiift MechanismNn PI BR Syi'iposriin r'ii Indifjcpoiis fJi;rn»,ir Crj'upment Troinlviy['•I. 1987

V '.' R.'inaiiri'ian /• K hohli .irvl Raiesh Chandra Iiici h>indiinq(iriMpF-r fo» PCRR ilm!

Ml, S'/i.i RG Af)i,i-.v.jl aliri Ra|cs!i Chandra lnciiq'-n<)iJb Dcsi'jnai.fl Dfvc.opnicn' nl I)itf''Tfiiti,ii Pressure Hcdurinn valves forPHV/R:, ii.id

N L Soru. R G Agrawal and Ra)esh Chandra. Performance Evaluationof Oil Hydraulic High Torque Low Speed Motors tor 500 MWePHWRs Fuelling Machines". Symp on Quality Assurance forSafety and reliability of Nuclear Power Plants. Trombay. March1987

RK Sinha. B B Rupani JN Kayal and V loeman. "An Overview ofProgiamme for Large scale Replacement of Coolant Channels inPHWRs'. Symposium on Indigenous Nuclear Equipment TrombayTeb 1987

V Muthuramalingam. A K Kohli and Rajesh Chandra. "Study ofabnormal conditions in transfer machine of PFBR fuel handlingsystem". Fuel Handling Workshop at MAPS. Kalpakkam Feb1986

V MthuramaJingam. A K Kohli and Rajesh Chandra. "Self orientationscheme and its implications in Fast Reactor fuel handling system 'ibid

A K Das. A K Kohli and Rajesh Chandra, "Abnormal conditions intransfer cell arrangement of PFBR and its inhtrent safety features",ibid

A K Das. A K Kohli and Rajesh Chandra, "Proposed transfer cellarrangement lor PKBR ', ibid

G K Agrawal and Rakesh Kumar, "Programme for development pre-commissioning & testing of Fuel Handling Sysiem components",ibid

RG Agrawal Rl Patel. D Panchapkesan and Rajesh Chandra.Procedure for retrieving fuel bundle, accidently fallen in snout

area with guide sleeve in retract position", ibid

D Panchapahesan. R G Agrawal and Rajesh Chandra, "Fuel bundleextraction from coolant channel", ibid

S Hoy R G Agrawal and Rajrsh Chandra. "Testing of seal discs ofPHWRs' ibid

R 1 Patel. S V Raul R G Agarwal and Rajesh Chandra.' Experimentto study the possible interference between magazine rotor andseparators and relaiion between magazine rotor movement andcam shaft relation ibid

N L Som and Rajesh Chandra. Design and Development of Differen-tial Pressure Reducing valve", ibid

R 1 Palel and Rajpsh Chandra Simple tools to increase the availabilityof fuel handling system (1) Separator calibration plug and (2)Remote Sensing Ram load calibration device . ibid.

1R Rege R J Patel R G Agarwal and Rnjeoh Chandra. Measurementof fuelling machine snout cavity temperature to safe guardoolenoiii valves of leak detector circuit and to monitoi the grossleal-aip through se-il plug ibid

S V Raul R G Agarwa) and R;i|es)i Chandra Modifications illcentral logics to safe ijuaid damage to separator tips ibid

65

BARCAYM'AI. RKrORT

1986-87

Piee : K D.is .wid H.IICS.N CI. .HKJF. . Operat ing Logging .mrl

Tol.m.-ji.'Kj System !o; Fijeiimq M.i'Twie Controls ibid

P iadeep Kumar (NAPP i ai.d Rajes!- C.'ur.dra The Computer Con

troiied Fuel Handling System lor '-.'APP ibid

Rakesh Kumar RJ Patei j n d Rjjesri O i a n d M Use of Magnetic

co-jpu',g in l'jfri!:ny ma', nine head 1o mf-re^se its a v a i l a b l y and

maintainability

AK Si'-^r, HS huvi/.-.m-. . m r i P S Bjn'iop.id-.y.i , , . f , ,n I P u d e e p

S:ngr F riaanuna!! ,ir. R G Aqarwai <i,'i<i R.iiesh O'.andr i Pail II

Etlect o! Nev; Refueling mode (Ambient temperatures operation i

on end fittings ibid

RG Agarwai and Rajesh Ch.indra Testing exper ience of fuelling

machine heads ibid

A Kakodkar H S K'jsmv.jha and A K Ghosh Structural Consult*

rations for PHWR internals and containment und'-r various

Populated :n;tialing events Presentation Workshop on Stiuctuies

for M'jcle/jf Power Reactor Technology Feb 1987

R S Soru HS kusrr.v.ih.jand A Kakodkai New improved Interference

lit design for TAPS Feedwater No?yl»» Sytup O^aiity Assurance

and Iridj'jrrrsoiis Huckzt Eq'jjprnent Teb ]98V

R S Son/ A. rjeeiv/arr.e H S Kushwaha and A K.ikodl-.ii Revis'-d

fr- if t ' i i" Analysis of TAPS I I'eeci W.Her No/ . / ' - usii.g 1980

n Cr.j ' c Gro-.'/tf' Rales ilwi

.S Kf o,

r 0 fJ Hap.it arid HS Kjsrn'.aha Loadfi! PHW 'Jut iejr Power Stations ibid

BK Dutfa HS r ;,:>/.•..'•. and A KaKodKar Modelling Methods ir.H'Tc-y, Ar.<i.y,iv --' ; i ;- ' C. rr>r»s 9!h SKIRT Coni^rencf inUKjsanr'j S-.v!t/'.-!!arr| A i'i I 37

BK Diift.1 J/S Mshv;.iha .tnd A Kakodkar Cffed o! Pressure offsi ' juai Strt-vses ir' ' «;JUOJ Rod drive Mechanism on ReactorSaloty ibid

•i K D'.tta '.VV Rarnana HS Ki-shwah,i anfi A Krfk.odkar Stress•>nd Fatigue Anaiysjs of Fuciiinq Machine housing of 500 MWePHWR ibid

RS Sor.i GR Redrfy HS K;ishr/aha GV Karandii-.ar UN Kulkarmand A Kar.odkar A Unified -ipproach Jcr the Seismic design of500 MWe PHWR Building ib.d

GR Reddy RS Sonj HS Ku~Jiv;aha A Kakodkar GV KarandikarDyanmir Analysis of Containment building of 500 MWe PHWR

Ansymmetnc Wodcl ibidRS Son-. GR Reddy HS Kushv/aha GV Karandikar A Kakodkar

Seismic Analysis of 500 MWe PHWR Reacior Building andGeneration of floor Response Spectra National Symposium on

Vibration oi Power Plant equipment BARC March 1986

N N Kuikarni IS Goray H S Kushwaha R S Soni and A RChandrasnekaran Standardised Earthquake Resistant Design of500 MWe Reactor Building 8th Symp of Earthquake Engineenng Roorkee Dec 19B6

H .S Soru G R.uiureddy HS Kushwaha GV Karandikar. A Kakodkar.and N N kuikarni Seismic Analysis of 500 MWe PressurisedH'-avy Water Reactor Building ibid

G R.imirtddy RS Soni HS Kushv^aha and A Kakodkar. SeismicAnalysis of Cajandrirt Vault ol 500 MWe. PHWR ibid

HS Kushwan.i RS Soni and A Kakodkar. "Modelling of ReactorBuilding in Seismic Analysis Earthquake Ground motion &Antiseismir Evaluation of Nuclear Power Plants. Moscow. March198G

V Venk..t R,i| HC Dhall. SG Markendeya and D N Shenrire.Design and fabrication of Some Special Equipment for a High

Pressure High Temperature Facility for Thermal Hydraulic Studies .Symposium on Indigenous Nuclear Equipment. Bombay Feb1987

Ak Pal 1) Sana and V Venakat Ra] Development of Simulaiois lorHoi! Cluster J'tir-i Hlement ibid

V V'-nk.il Raj and p. K Sinh.i Equipment foi Research and Development to suj)|iort Nuclear Programmes and Associated BasicRfsr-arrh ibid

\>Y Vijayan AW Date V Venkat Raj and S K Mehta. "TransientBehaviour o! Natural Convection in a Figure of Eight Loop Caseof Initiation from Res ASME/JSME Thermal Engineering Conference Honolulu. March 1987

R S Modak and S B Degwekar Convergence of the iterationscheme in the nodal expansion method for the solution of thediffusion equation Ann Nucl Engergy. 13. No 10 539 1986

DP Burte and SG Vaidya A sector symmetric core concept forBWRs Ann Nucl Energy. 13 No 6. 317. 1986

SK Gupta HG LeleandLGK Moorthy. NODE 1. A computer codelor PHWR LOCA analysis . IAEA AERB symposium on PHWRsafety analysis May 1986

KP Chakraborty and LGK Moorthy. Tarapur Dual cycle BWRAnalysis of steam generator by pass incident". BARC 1298.1986

A K Ghosh N Muralidaran and R.D Sharma. "Spectral shapes foraccelerograms recorded at rock sites" BARC 1314. 1986

S K Charagi and SK Gupta Accurate Relatives for nuclear masscalculation Symposium on Nuclear Physics, Waltair. 1986

D Das S K Parulkar. Y K Taly. Manjit Singh and B R Bain Microprocessor based testing of shut off rod drive mechanism lorDhruva Reactor IFAC Symposium. Bangalore during Dec

Manjii Singh YK Talya SK Paruikar. S S Talian. VR Nair. PBDesai Ajit Singh and G L Goswami. Design and Development ofan automatic resistance welding system for fuel rod production".JOM 3 proceedings. Denmark. Dec 1986

66

BARCANM AI. RKPORT

1986-87

D Dd P. Tdnc),) SK Paruikar iK Taiy <ind Manjit Singh Quality.insurance during testing o) shut oil rod drive mechanisms forDhr'jva reactor Symposium on Qudli'y Assurance for safetyand reliability of nuclear power plants Bombay March 1987

V K S:id>.la Kuclear data utilisation for saiety evaluation of pileirradiation r«juested via research reactor computer codeSHARDA'.IAEA Inter regional Training Course on Preparation of NuclearDaia for use in Reactor CaJcuiations Bombay. March 1986

H Bose and LK Prabhu. An Extraction -Stripping Procedure !orEnhanced Sensitivity in Trace Estimation ol Fiuonde Ion in water•as 'is complex with Lanthanum Alizar in complexan Third!«itir;nal Symposium on Separation Technique with Sa1eli!e

Symposium on Solvent Extraction and Ion Exchange. IndianSociety of Analytical Scientists. Waltair. 1986

S K Mishra. Break-down of Dhruva MCP. FW Radial Ball BearingsLubrication System related investigations". Indian Oil Corporation.Bombay 1986

MP Kem and MR Hardiya. 'Fabrication of Aluminium ThermalColumn plate ior APSARA Reactor". International Welding Conference. Delhi. 1987

P Ganeshan. K K Rathore. "Centrifugal Fans Selection and Perfor-mance . Indira Gandhi Centre for Atomic Research . Kalpakkam.Jan 1987

67

7. FUEL CYCLE

BARCANNl \ l . R1.P0KT

1986-87

7-1 Ore Dressing

An integrated gravity concentration flow sheetwas developed lo maxim.je the recovery of uraniumvalues from the tailings of copper plants in Singhbhum<tnd for exploiting low grade uraruuin ores fromJaciuguda Narwapahar and Turamdih and wassuccessfully tested It was found that substantialincrease in the recovery of uranium from thesesources could be effected Large scale testsconducted at Mosabani Plant Site in association withUCIL have shown that more than 40% ol uraniumvalues could be recovered from the MosabaniCopper tailings Low grade uranium ores respondedto benefit ation -.and about 60 to 75'J., ol uranium values' ouid be recovered at an enrichment ratio of 3 to 4Baich tests earned out on different types ol iow'jtride wolframite ores from Degana in Rajasthan lorrecover/ of tungsten showed encouraging ies'uits Arapid spectrophotometnc method lor the analysis oltungsten in low grade ores has also been standardised

Studies on the recovery ol copper values JromWalan;khtir ci copper ore and economic minerals fromthe beach s-snds ol Kerald 0'isja and Ratnagin byspirals and wet high intensity magnetic separatorswere earned out a? the request oi M/.% HindustanCopper Ltd and IRE respectively Petrornmeralogjca!study ol lead 7inc ores of Rajpura Danba and Zawar inRrffaslhdn has been earned out with particular reJerenceto mineralogy of silver Presence ol native salver andores of Silver have been observed Fundamentai studieson improving various aspects ol mineral benefjcitionand petrominerajogy of ores were continued

7 2 Uranium Metal Production

Production o! uranium metal in (he expandeduranium mrtai plant was continued and the melai wasmade available for fabricaJion ol nuclear luel forDhrrva and Cirus reactors

Since the recommissioning of (he expanded plant.only uranium oxide received from me luel fabricationshop was used as starting material so that the accu-

mulated reject oxide material could be recycled How-ever, during this year effort was made to recyclesome of the in plant recovered uranium in the form ofvarious concentrates and also a few batches of yellowcake received from Uranium Corporation of India Ltd ,Jaduguda It has been established that all the normallyexpected inputs for the plant operation can be conve-niently taken up.

7-3 Uranium Fuel Fabrication

About 100 metallic uranium fuel elemenis (x-rods) were fabricated and supplied to Cirus towardsreplacement charge In addition, more than 1000 x rodcomponents and 12 thorium oxide rods (1-rods) werealso fabricated and supplied to Cirus. For Dhruvareactor, 143 metallic uranium fuel clusters of modifieddesign. 136 modified aluminium shields. 1 tray rodand 50 ball guides were fabricated and delivered

Besides. 175 power reactor components werenitrided. 1 control-blade was fabricated for use in theTarapur Atomic Power Station (TAPS). 6 zircaJoy neutronbeam source assembly components were machinedand 6 assemblies were electron beam welded andsupplied to Karruru reactor. 12 stainless steel mechanicalshut off rod assemblies were fabricated for use in theNarora Atomic Power Station,about 230 thorium oxideelements were fabricated and supplied for experimentalwork on fission/fusion hybrid systems. 6 uraniumalloy rods were made and supplied to Defence Metal-lurgical Research Laboratory; and electron beam (EB)welding of tantalum protector tubes for acid recoveryplant was taken up for OSCOM project of IRE and 5 EBwelded tubes were supplied to them

Work was earned out on the development ofhollow uranium rods, fuel surface welding ol bearingpads and spacers on zircaloy fuel sheaths for PHWRfuel bundles, electropolishing of zircaloy elements,palladium silver foils and dispersion strengthenedcopper

About 400 kg zircaloy 4 strips from Nuclear Fuel

68

BARC\ \M \1. RKI'OKT

1986-87

Complex (NFC). Hyderabad were reduced from 3 4mm to 0 83 mm thickness by cold rolling in connectionwith the spacer grid development work for TAPS. Alarge number of tubular components made from specialalloy steel were electron beam welded

Trial production campaigns with around 400 kg'A UO powder were taken up to suggest ways of.mprovir.g the overall efficiency of PHWR fuel fabrica-tion at NFC Strict control in press tooling toleranceand addition of admixed lubricant were found to bevery effective

Quality Assurance

Quality surveillance on fuel bundles, zircaloy compononls coolant tubes calandna tubes lor PHWRs.fuei bundles for BVVRs. SS stops for HWP. forgedflanges and seam welded tubes for CHED and fuel pinsand some core assemblies for FBTR were earned out

Against specific requests from other DAE unitsand outside agencies, material evaluation jobs, speciahsed non-destructive testing (NDT). heat treatment.machining welding and mechanical forming jobs onvarious materials were aiso undertaken

Under an IAEA coordinated research programme.an eddy current testing technique for detection andclassification of cladding defects in irradiated nuclearfuel elements has been standardised

7-4 Plutonium Fuel Fabrication

An additional 194 stainless :."•" {6S 316) cladmixed uranium plutomurn carbide! jel pins were fabri-cated for FBTR This was the first time that high dosepiutonium was used at Trombay Special neutron and/;. . shieldings were provided in the glove boxes forkeeping the personnel exposure to a minimum

A process flow sheet using the melting castingroll bonding route, has been developed for fabricatingdluminuium cl3d Al 20% u711 fuel piates for the neutron

source reactur Kamini In this connection, a number ofNDT techniques based on radiography, ultrasonic andinfrared imaging have also been developed for evaluation of the fuel plates in terms of micro-homogeneityand bond quality Several dummy fuel plates and subas-sembhes have been fabricated using natural uraniumKamini core is likely to be delivered before the middleof 1987

Sol Gel Microsphere Pelletisation (SGMP) is anadvanced method for fabricating ceramic nuclear fuelusing sol gel derived calcined dust free and freeflowing fuel rmcrospheres (400-800 microns) for pelletpressing and sintering Unlike the currently followedroute using powder the SGMP process avoids generation and handling of fine powder thereby minimisingradiotoxic aeiosols and process losses Further, theJuel pellets prepared by the SGMP route have excellentrrucrohomogeneity and a pore structure suitable foipelletization The know-how on the SGMP process isbeing transferred to NFC. where a demonstration trialhas been successfully carried out with UO, microspheres prepared by the "internal gelation route

Post Irradiation Examination (PIE)

Post irradiation examinations of several Dhruvaluel assemblies, mixed uranium piutonium oxide (MOXIbundles containing fuel pellets prepared by the lowtemperature sintering (LTS) rouie. RAPS pressuielubes and some components of RAPS and TAPS havebeen carried out

The PIE of Dhruva fuel assemblies provided a database thai helped in arriving at several design modifi-cations for improved inpile performance

The performance ol MOX pellets prepared by theLTS route were found to be comparable to the enrichedUO, peliets for BWR j,""pared by the conventionalroute

The PIE of RAPS pressure tubes revealed increasedyield strength reduced ductility and no significanthydrogen pick up.

69

BARC\ \M \l RII'OKT

1986-87

7-5 Fuel Reprocessing

Reprocessing of spent fuel from Cirus reactor wascontinued in the Plutonium Plant at Trornbay Plans forreprocessing spent fuel from the new reactor. Dhruva.are being prepared At the Power Reactor Fuel Repiocessing Plant (PRERE) at Tarapur. reprocessing o).spent fuel from PHW power reactors is in prdgress ]nth • K.iipakkam Reprocessing Plant Project, detailedf r't;inopnnq fiosiyn procurement and labiication olm.i;or itei..., o! equipment HIP in progress Conductionof the iov.' bfj'-'r <•' 'lie mam plant bunding lias been• ornpi--'<jd <ii.d t h e c o n s ' r ; ; c 1 i o n o! lug!', b k n i- w h i c h

f / ' i h ' - h t h e lij ' ihly ;«)d)o<ic!iv'.- par* ol th<- plan? is in

;>:-;qri :,:, C o m ; J te r . s <;;e b e : n g w~c(i U> t h e :ii.mjmMT!

'•'';<•:';< for !h ' d<-si'j;i .ir.d ioi r i j o r i t n i i n g ' l i e p r o y n s s

7fic</;;r-r,ii'<;M.-> T< st Faci l i ty i«'i ! hc P' l j ion;; ; : ; ; PI,

issioiK^i A : r ; m b

< f < < • : : . . ; • f ' / t ( ; < - • ; ] > < • ' , . i V . ; v i p i . ; : '••

- • ' T : ' 1 :•••/; •'•- • i » - ' . v i , > i ^ > ' • J i w , - ; ' . ' - 7 Z ~ r , i < ; ' ' u * ^ o . u 1 i ' - n

:: i , \",; ; . i ' i - i r - ' i ' ' f j i v r r i ' ' i • < • f / > ; r j r - I n i ! - ; f i t i < - r p i < > ' <••

• : / ; . ) : • ! ! ! ' i - ' i ' i ' ' r r . i s ! • • ; « • : ! ' ; : ! h < - p r » , p f r . . ! i r > . j i ; i , p i

I X - s K - j ! : / . • / ' ! • •>? * h r P ! . « i n e e : ! r i r j j - ' ^ i e i - i ' s i j t y 1 0

r e p : i ' - ^ . - i s t ' i f . i r r - i d i . i f e d J h o r t u r n { l i e : r o - ' i . s f r o m ; h ' j

fO'.r.irr.i-, rc-iMors Cirus -anri Dhruva h^.s i>efn t.i!"'i.;;p --.nd i.s prorir^s-->mrj .•^fi.sJ^

7-6 Radioactive Waste Management

ConsirsKiion of the hurveill-mce anri chaiactff!sation hlock o! the Solid Storage Sutvoiilance Facilityv:hich lirfb br-rn |v.r.t» at Taiapur. made considor.'ibloprogress This block meant for lonq tcrrn productevaluation is expected fo be commissioned »>y middleof 1988 Design and detailing of the Waste immobiJisa

tion Plant (Trombay) lor treatment and conditioning ofhigh level i adioactive waste generated in the PlutoniumPlant (Trombay) is in progress and civil works havebeen started

Civil construction of Waste Management Plant atNarora (WMPN) is completed The installation oi equ-ipment and piping are in progress and are scheduledto be completed by the middle of 1987 Planning fortesting and commissioning activities is being doneThe facilily is expected to be ready by the end of 1987Design oi Wrisie management plants at Kakrapar forRAPP '5 & 4 and for Kaiga Atomic Power Project ispioqu'ssmq Design of the Tarapur Radwaste Augment.ition Plant Phase III(TRAPNI) lor immobilisation of:,pf%nt lesins find sludges is also progressing as scheAllied

Operation

Waste Management Facilities ai Ttombay. Tarapur.H i}.i^ih,ui Hyde iabad and Kalpakkam for low andiiii»-iitK-di.ito k'Vd waste: from power reac to r s fuelJ.ii>/i' ,iti';n fc-triiitjf»s and resr>a;ch facilities functioneds.itis!,ict(j:ily Th'- discti.drgo of activity dur ing Ihc yeai:..is b"cn less th.i.'i 8 of 1he maximum ppuniss ib lc:.nut:.

Research and Development

RosfHit.-b and development work on verification.m(i ( homjc.'il Ij-iiiieis in t,idii;active was te l epos i tonesv:-iy, continur-d In the o/prnmenls conneciecJ withtlieim;> mechanica! .studios in deep geological foima-"ions undei smiulatrd condition, design modificationin heater layout and insttumentaiion has been doneand 1he experiments are being started again The dataoi»i.iiiK<j will be useful in the development of a reposilory !oi immobilised waste in a deep undergroundyeoJoqjcal foi mation

Centralised Waste Management Facility

A proposal for sorting up an Alpha Waste Management facility at Kalpakkam incorporating the cost

70

BARCANNTAL REPORT

1986-87

estimates was prepared and submitted An interimfacility v/:th two glove boxes is being installed Studieswere continued to evaluate the phenol and ureaformaldehyde matrices developed for fixation of lowand intermediate level beta gamma wastes and tntiumconcentrates Biological fixation m Aspergillus Jigeris being tned for treatment of selenium bearing effluents

Nuclear Materials Accounting Database

A computer based data storage and retnevaJ system!or nuclear materials accounting from the fuel cycle{.iaijt.es jn DAE ha:-; been developed by the Nuclearf.'atenalb Accounting Cell (NUMAC) A genera] purposed-'jUiJ iKc- managenipni system (DBMS) software packh'le v/Hh interactive commands is used U is possible

to provide security at the file and data item level byassigning Security codes and Privacy levels Severalapplication and report generation programs have beendeveloped for processing information on the status ofmaterial flows and inventories of nuclear materials,and to generate accounting report. By giving simplecommands, the required information can be retrievedby an authorised user in any user-onented reportformat Application programs using a graphics softwarepackage have also been developed to provide graphicoutputs pertaining to the data All the applicationprograms and the database are available on-line Thesystem has been in operation for more than one yearThe database can be extended to accommodate newtypes of accounting data with minimal amount ofchanges to the existing software

71

Publications

BARCANNl'AI. RKI'OKT

1986-87

'.:•. ii,ir,.1.-; ,.'i:iy.;y .:.•.•: I . ' • : • . . - . r i ,H- . . I I Reliability of artificial

:<-!<.K-[,. ,- s! : : i i i' : . . i t : LYi. t ioni i Testing Plot of 3rd

.N.ii:wri.i, .'iviT.po-.;;.;- .,.. l ! . " • , .- , M NSU III i NP1. New Delhi

.•>!.• 198G

PH bt-..!i V G ! J . I ! I - . ! ! " i H V;;.iV-ir.)'j!!.iv,iti Developments in the

••>• r r . i - . ' / jy o! |'jin::iq of .ipp'-r.dages foi PHWR I'uei Plot <->!

IAEA Syi'iposKjr'. 'JJI lr';['rfi;'^]iH jn1s in Water Reactoi l ue l

I t - r r f j i o a / S:rx rho,;;i S.v<-d<-r. Sepl 1986

' / H.inO'j;j>j'J."y.jy.i and i. Veh.^t . j ia inan Ult iasonit Testing rif

T.'.«.r:ina Sit'*-, 'iVe.da Pro;, o! National Welding Seminar 86

<,V,75 80) ,;MJV7 ». j i j i . i . , O-! ]9B6

/ ?.' Hr1"'- Snjtif c«n(-r;i-!i( <'s in ' jnconventioriai uses of Eddy

C .rr« ;.' 1'".1;:.'J „• Iri'i jst:y Pro' of National 5"Miin.ir on NDT

i i p ; ,,'•') ' ' " '],'<••.•<•;•, ,; i fJ. j t iDn. j i G i iuv l j s C a i n - t t a Dei

'.: i;,,,: 1'f; r1 ,,r :•••: • ••" !• V i ( i y . i r . i ' i ) ; , i . , i n A p p l i c j t i o n ol

':r:u ^ ; ! . i [ . : . . .: ' i ; ] • .•' '.' y ,v\ t . V l h f r i l u f n . u c l i^i t i

": i ! ' • • ] , i ' H 1'i . i. i ' ! ' . ' ( ; j i. i '< !rifi'>..j*i.•< M^ l i ' i d 1 - . ir- H<" l s L i n c r

,',1'i' ; / . ' i t ; ' j ' ' 1 ' • i ' . i ; I 'I ( ; i " . i ! . i - i ! , P' •• lit I nK 'H i . i t x i n . i l

'.'.'• •) ' ; ' •••• . r r.. .-, !)• • , l , i : 198V

; > ' ; (• ,.- •. > . •', • , . i ; ( , i i i ' . . n u l l - ; V i | . i y . i r . ! ' ) ) i . n - . i n f ; H

' . ' , ' • '. • : ' ' i . > : ' ! • • j • • • • • ' ' • ; - i ; ' ] ' » r i i b i ' i

'.,", }'- • ; ' . ' I '.' j • i i ' , . i ; ' | - , i . ] • • ' ) • / M T ' I " " • • i n - l . i h i i . I V J I I

' -'- ! ,. , t ' ' ' , . ( ' "> • ' •' ' • . ; ; i i i i i i . : : i C' > ! V J I < - . • I J c v .

[ » - ' • • • ! • - - • /

'.-,',, '•'.", ' '.''"• ''•!'• V I", y , , f , i i n j n d f i V i > - i , ' - ! r . i ' ) l ' . ! i . ! i i 1 I I J ; I

:• .: • ' ( , • • •< • : . ; • : - ] •-»: j ' H 7 / H s ! - ,<« " ' S V I M | I . ^ ; - , I H m i

l : ! r ( - . ' i : • , : • •• : • •' V. ,',--.n f - f - i j . - i r • • ; . • • . H / - H ' '

.",• ' • : , ! , ' • : l i ? /

(' r; K , . - . : • . <,..••;•:. . . • • • • " . ' • ; / ' j ' i I . i : , ' ' . - • • " » , I c . j ; I , i i i t ;

iV : . - ?;•, •.' . , " • ; • ' • • ••• " r i).•>.•.; /- . . i . s r u <• m M c l . n

I ; - .- • <: d . ' ' >' ,f ; •','••• i . . i ; | V - i i ] ' W

- r B : - - : ' i : r : : / i , : H V R I : : . M ! }• f i h - . iS- . i r i ' . ; . ir-.f i Fl

• ; . . ! , ! ' ; ; • t • : • 0 " •• ' V •'• - • • • • • ' - , - • > • • • • • ' • • • ' - : M . ! t T i ! . i f i : : t < -

••if *.j i- ,t'-i' F1''.'.' ^ Pc' -' •*'-. 1 . , f""'>' f •' ^^yiT!]) v>; • j I'", ' j : * O';.)li1v

^ --. ;r-tr< - ^ ' i ' .V / - ' * y <# 1'^ .. '.ii ;,.;'v of !u ;' i f '-i1 p'v'.v*-' Fia:.1s

; ; i p r ; V ' " : -iv '. ' ••' • V-Ml

.". : ; . • ! ) • ; i ' : • ! ? .-• •• V V, i , - . i f f . ; -ir-.fi h V i n v . i t . i ' j h . ' V - i n

0 i-i . ' . ' - . • .:•"-• ' /'••:•' " > l '•' fT ' - - -~•» ' • T•;(>'•• f' i PH'.VP-- i l m l

P V S M i - r r - i R . f P r i f • ..f-itfi;-»r>rl P 7 n - i y . i ' . r i n . i v , i ! ; i;*-j»»-t i»Tif-*-r,

it 0 ..n;tv / -ss 1 ; : . ) 1 ! ' " *'.r f ' o t f , j - ' .crr ' - i i io- . >i ' f> r i ;>on"n) ' fr.t

I H T P i b i d

RS !:vi .ir d V H B.i'n-i pfr1<-rTn,-)r>'" fvaiuafmn of finp^f-ivily .inrthf-rf-fin,a;if<n iiro'""->s for 'Jtaru'im rp<"ovr?ry rjattr.nai .Sym;>f»;;i!inir>r. appii'^tion of Comp'!f«?r in Chernic^i nncjirwnnq JGCAR

•pT'i 1986

NPH P.idmanablwn M Manmadha Rao. S K Shukla.PS Muiihy.D Naiasimlian and N K Rao. "Laboratory investigations onM.il iiijkliand copper ore to optimise copper recovery. Part 1Benefications studies Part 11 Petiographic studies BARC /R 7.3 986

h K Das VH Bafna. PS Murthy and N K Rao "Feasibility studieson upgradation of activated carbon". Report submitted 1o IndianRare Earths July 1986

Pielimmary sludies on recovery of uranium from Narwapahar low<jt.«le ore by improved gravity concentration process . Reportsubimtted to Atomic Minerals Division July 1986

S K ShuMa and N K Rao Benefication of tungsten minerals Aiivicw (if studies earned out in Ore Dressing Seel ion BARC .Communii atfd lor publication in Tungsten in India a statusicpoti being puljlished by Sub CommiHee (Group XII) on StrategicMinci.ils G SI Oct 1986

Ch Hamb.ibi; Problems of beneficatmq slimes and the techniques.Piescnh-d ,il International Symposium on Beneficationand Ag<ll'imi'Mtioii Bhubaneswar Dec 1986

HS Jh.i R N.il,u.i)<i;i VH Balna KK Das U Sndhar. NPSubi.thmanyam Cli Rambabu and IM K Rao. Recovery ofui.iinum values from copper tailings by gravity process On sitetest I]" scale up sludies at Mosaboni Pilot Plant InvestigationR<-|ior! submitted 1o UCIL Teb 1987

IJ N.ir.jsitnh.in and N K Rao Nature of Occurrence of silver inH.iiptjia Dariba ores Raiasthan Investigation Report submitted\<i Hindustan Zm< Ltd Jan 1987

'I Y S Muiti'v .Hid SL Mishr.i Recovery of Copper and Nickel from.1 Complex Solution using Di(2 ethyl heryl) Phosphoric AcidiDIJMPA) !>ti,ic:t,inf Trans Indian Insl of Metals 39(2) 130

1 KS .hy KS KoppiK-i and C K Gupta .Solvent Extraction Inion Metallurgy Recent Develop S'-j>n S'K-h'e 8 1

Y Hh.ittai liary.j P HarnaMishnaii J 5 UilJ and U H Mar wan SoimAspects of tfie Decomposition of Isopropanoi ovet R.ne Cart)O'ides Syni|>osiuni on Raie T.arths Application and TechnologyIRE Bombay 1980

).S OifJ V Hlt.M.H li.ify.i P R.im.ibtihlwunanci U R M.irw.ih Study'if the !\lV k"i Clii'iii.i.j','af.ilyst for Hydrogen Watel Deuterium]'.>< h.iii'i" H'MCIIO'I !<<•' ''tit Advances In Catalysis and CatalyticRi-a'1jnp Iji'diieciirig Indo Soviet Seminat on Catalysis Hydeiabad1 '.m,

C c;.in.jiii; C,r. l.nn PV Hegde U Uasak RS Mehiotia SM.iMiind.ii .iiul PR Boy Developttient and fabtication of 7CPiC .'0 IJC fuel fot fast hreedei reacto) in India NuclearTf-r hn-.loqy 7'U 1) 59 1986

72

BARCANNUAL REPORT

1986-87

C Ganguly H Lanyen E Znnmer aiid E Merz. Sol gel microspherepelietization process lor labncation ol high density ThO 2~- UO(,,<=•; fur ,idv;ir.ct-d PHWRs Nuclear Technology 73. 1966

C Canguiy U Linke and E Kaiser Characterisation ol UO ThO.!'i*-i pellets prepared by the sol gel pelietization processP.-aMische f/etallographic April 1986

C G.uiu.ily U Linke and E Kaiser Mia ostr jctural characterizationof so; gel pehetized UO CeO peliets Metallography 20(1)i9SG

C G;>rvr.;y E Zimnte: and E Mer/ SJ I gel microsphere pelletization;>r'/'j.ss fo,' f.iJjfK .jtion of uranium and thorium base fueis'Ir i:i.,.tic: Ann-ii'••IJI N'J< <-i,ir Sot ifly 52 44 July 1980

A f S.-ri(j..j-\i (.' (J.ir':;:;y S M<i]urndar D S C PuiushoUiani andf'H it'.,' 1)( inn,in.itior. o! some important therrnophysical;-f.p'-r1i« '•• i UO . P-; )C fu«-i American Ceramic society.". ...c'iP f/>i7i 1057 1986

/' r1 .-<T"ri|>'.i r B Anna S Majuni'Mi C Gripyiiy and PR RoyT:<-nt n • f(:i(iuiii/iiy ol sintered piutcruurn caibidt- Journal of

•; .. ,.-.n t/.i).-n..;s iT;r» ?a? 1986

I \ {1' "•.,'. IP i'.ir .i»-r .i. .<r«i P R Roy Quantitative non 'icstructivo'. ..iri'ir. i,' .«-,!,i(i it.:;i ;<•.« fjeicli'incnts Internation.iJ:i'7 ' : ; s4 i 12 i960

IP P.,I...-- r.', !f GiK):,:! ,md PR Roy Analysis of o|>ii<,ij rUt.t;<•• • •r.it'-fl .;,' i.t- .'•:•.:• •arljo'jraphs of UMniwi :>liiior.iiiiii mixed

• ••:•',!• '•;< . |.<-,,<'t-> :;'S"1" ",'-ai«'f| ruif !car fuei pin fJucJe.ir instruin".,'--, -.:•'• mi'1' •>'!• ir- prv/si'-H i w . i i ' !i (HfUif-rUnrlsi Voi B14 '/JS6

T F-i fi f- • J 11>• Ki; rh.iMlr.cf-Hh.ir.jn )P P.in.ij'K.iii )K Ghosh?M't'.r<- t'ci jf-rif ,:> -ar-'J (r.idsj'f suif^ic etvt ' jy ol bint'^rcd.T-ir.i'.jrt. dm,;<'.<• Us-, y-,',i^u Journal 'A M.it'-n.u SCTTI^P lettersA> ' «'jiied fr>r piit/ii' .ilion

K Ch a"*-r ,*••'• S Ananttvir.ir^an UK Vir/.vari.ith.)1! KS H.ii.ic rishnan

K S Sivar.jrnakrjshnari and P f. Roy BV.'B pipss'it" vessel

r,ur«e'.;ance programme Puh.tshf-fi :r< A.STM STP 90? 1986

U Bas,ir ,ir .i C Ganqi;.'/ faljiir ,)1ion of TriO 4 PuO !uel peiieis!c: PHVr/R Trans PWAI 1986

GL Gosv/Hmi .irri P R Roy T/nntnrin'i 0? w-id defects and v/eldprocess by .r_Tjstu fr"issior' tr.'iiar W'-j'liri'jJourn.ii I .r;l ')80

C G.inq'iiv Advanced m"thof{5> n) !.ihrK.i?;on r/fThO 2 UO fuels

for PHV/R« Pror EfJC S6 Geneva 1986

C G.m.'jwiy Arlv.inrfd fi;f>; .ind .i-l/arirffl !.-jbri( alion rn'-thods in

India Pro; of 6fi CirUK Con) Mii/in Italy 193f

G I. («osv/.imi A K Sf-nqupt,i 0 1 ».Sr,-,i7^ SP GargaficlDD Sood

High temporature compatibility of (UO pi;, )C

Manjit Singh 1 ¥ Taliyan PB Desai Apt Singh SR Perulhar VRNair and G L Gosv/arru Design and development of an automatareistance weiding system for fuei rod production Pioc on

Joining of Metals 3 Helsinger. Denmark. 1986.

J K Ghosh IP Panakkal. V.D Pandey. S Muralidhar. K NChandrasekharan. T R G Kutty. A. Subramanian. "Quality controlot FBTR nuclear fuels An overview". Proc' of the Seminar onFast Reactor Fuel Cycle. Kalpakkam. Feb 1986

G C Jain C Ganguly. P V Hegde U. Basak. R S Mehrotra SMaiumdar DSC Purushotham and PR Roy, "Process controlsin mixed carbide fuel fabrication for FBTR'. 1986.

IP Panakkal S Mukherjee and J K Ghosh. Thermal non-destructiveevaluation ultrasonics and metallography their interactions inbond testing of composites . Proc of National symposium onMetallography and NDT Interactions in Materials Evaluation.BARC Bombay 1986

IP Panakkal S Muralidhar S Gangotra and J K Ghosh. Charade

nsation ot materials using ultrasonics ibid 1986

JP Panakkal KN Chandrasekharan A Subramanian and JKGhosh Role of m.crodpusitometry in quantitative evaluation ofladioiji.iphs ibid 198G

TRG Kutty VD Pandey and J K Ghosh Application of quantitativeimago analysis 11. microstructuial evaluation ibid 1986

AK Scnyupt.. Arun Kumar KBS Arora V D Pandey MP Nair andH S Kainath Effect of litarua addition on the thermal conductivityof UO luel ibid 1986

A K Scngupta U Basak S Majumdar and C Ganguly Hightemperature microhardness measurements Its application inHit- evaluation of nuclear material Preprints vol DAE 86 01on metallography and NDT Interactions in materials evaluationBARC Bombay 1986

GL Goswami and PR Roy. Location of weld delects by Acousticemission Proc of the seminar on Acoustic Emission. KalpakkamDec 1936

G t Goswaim and G P Tiwari Thermally induced relaxation behaviour in metallic glass ibid 1986

GL Goswami VR Nair MS Sargunam. SK Iha and PR RoyMonitoring of resistance welds Proc of the National Welding

symposium Madras 1986

E Rarnadasan ) K Hahl and K S Sivaramakrishnan Failure inveslibation of failed carbon steel plug from PHT pump outlet of RAPSunit 2 HARC 1 869 1986

L Ram,)(l.)-,,iii IK H.ihi and K S Sivaramakrishnan, Failure analysis• ' !•/•(• • • - .<••)• , „ , !„:<• T',73 212 BARC I 867 1986

HP Ram !J | i :>i;i)b.ii,ikshmi and SV Kumar Application ofOjvtiiiii/.iti'ir, !'•( iitngii'1 in 1hc Design and Operation of FuelR'-IM 1 >'•<•:. •.!!;() Plants 1 ast Read or I'uel Cycles Seminar. IGCAR

73

BARCANNUL RKPORT

1986-87

S c Trip.nhi A R,.iii.muiam M N NadKarni tind C BandopadhyayThin Layer Chromatographic Separation and Determination of

Dib;;tyl Phosphoric Acid m a mixture of Monobutyl PhosphoricAciri and Tnbi.iyl Phosphate Analyst Vol III I'eb 1986

S V Kumar Roie ol Computers in Radiochemical Plants NationalSymposium on Application ot Computers in Chemical EngineeringIndian Institute of Chemical Engineers 1GCAR April 1986

S Yuvr.i) PRR Piii.ii SV Kumar SK Bose and RK TalwarAppin ation of Computer Aided Drafting Package in the prepa

lalmfi "i Pi or <•!,.•, Instrumentation Diagram ibid

H.S Cnnorra and SV Kumar Computerised Data AcquisitionSystem for .i R I'IM" :"-!Tii' .si I'ia:»t ii«iri

1A Sid'.iiil'ii R S Chin<r I.I mil S V Kumar Application of Compu

' • • t r v f i G r a p h u i*i-»(•! .Jv — Hi (•'!•• - i i ' i i •<> P i i i n l ii>i<i

V V S f.' i i i i . i n l . . i i » ! r . i S I ' M a m D u i i ' i f - . i n d A D M u r t h y L » p e n e n c e

/ ! ' " i ' i," . j » > f i i l j u f i • ' ! ' tihn.i' Ti»••- s a m p i e s In' a n . i . / s i s I A E A

I i . ' ' - : r . S ' I I 11..11 S y t ' i j " ' . i . i t m i t | . e |> .n r a g i n g a n d T r a n s p o r t of

H i d i ' . j t , . < ! . ' . i i . - r ; . i , D A V O S S i . ' . ' i l / e : l . K . d J:;rif- J 9 8 6

Hi'. -S.r..• ?f t- K YI-I , !n(.ji r.".it!i'-//Thomas RK Singh VR Ramana:n! '.' y T '."a.: I..it«n.i!i/ry Stidie.-, on the in situ elect roiylxri-d . -in: ••! [.. ,'iiio'si1 m Mix-r S'-tt.'-rs SymposiuMi on Ck-ctro. !;.-!'•i-,!r/ ir 11 . ,< a; T<-r hlioluijy KX'AR iJr-r 1986

I'h D'-y V V Rariaii ,IM! M h T fJ.iu D''V(-,oj>mon' of t i e I ro iyse t sto: .arqi '. .lie prod i'lion uf ui.inrjus nitiat ' ' to meet Rcp:o'c:--,uv) He) urcjncjits )l;ld

y h G:i|»t.i C;«-oi'(f Thom.is ,uul U V.iradaraian Apph'ation of,!ir)jr<-' 1 ni<Dio;l IOT di*l<>niunat<iin of t):;.ili1y of .Spirit Solvent inR"pro'f-ssiii'j 1'iant Rarliot licmistry and Radi.iiion ChemistrySymposium Vrpr.itestr.vara Urnversity Tirupathi Dei 1986

Pii.t.i Sf-n .md U Varadr.ij.in ( eas;!>ility Studies on f ie DwonMniination < I Caesium 137 in Pur", process Streams by use ofmorqanj' inn err harn" Ammonium Molybrio Phosphate ibid

R Sl'.yrniai S G Ta,n:.-ar anc! A Ramairiiarn Estimation of Plutoniumiii Hirjii A.-tr/e •.v.i-.te IHAV.'I Raffuwtc Streams by TOPO nrtrartion

i.'I) S i!/baia!--,hmi RP R.iiuand.SV Kumar Reliability Study of aRadio i hernn ai Pi.int using } anit Tree Analysis 39lh AnnualSes-,i'm of Indian Institute of Ch"mi(al Encimeers Hyler.il^id!>•' 1986

V b God.-,r RK Math ir PK fJar.i/.m and MS Sunder RajanStatus rif Investigations for C"h,ii,)rierisatif)n to loi ate a hiyh

i "v i r idina! t i v •.vaste repository IAEA Hanover meetingMar'i; 1986

K R.i)iindMT Samuel. Modified Pot Glass Process foi Vitrificationof High, level Radioactive Waste Piocess Engineering Aspects'.XIV International Congress on Giass Delhi March 1986

GA Vaswani and P B Jahagndar. Tornmlation and characterisationof Boiosilicate Glass- for Immobilising Highly Radioactive Wastes'.XIV Inter national Congress on GJas.v Demi March 1986

ZA Khan and Satya Brat. Behavioui of Fission Products m SoilWaste systems Radjochemistry & Radiarjonchenustry Symposium.Dec 1986

C NagalaHshim KB Lai and R V Amalraj Mocrobia Denitnficahonof Nitrate bearing mdusttiai Effluents Indian EnvironmentalHe.,1th (?) 140 1986

Hipiol' P.iul K H l,ai and R V Amalrai Development of Genera)Plotter pi ocjr.uti with typical application Pioc of the Symposium•in appiii a'MM 11 if Compute!., in Chem Ijigy (11 CHE ) KH I pah ham]'iH(,

P S.isidhar V Aiumiigam C Anan Babu and K B I.ai Tei hnujuefor evaluation and (oridHioii/ni) of sites for shallow Bund ofRadio.ii ti.'e v.'asles Ptor ol the IAEA lnteination.il Symptjsiumi m thi ,itin<| Design anrl Constiudion of Undeiground Repositoriesf"i R.idinai live v.'astes Hanover ("RG Match 1986

PC Kaisi and RH lyei Det(jrmination of Uranium in CrudeDrn.inate C,I(T-S produi ed ,it the Uranium Conversion Plants byGamma lays Speetiometry DAE Symposium on Radiochemistryand Radiation Chemistry Venkateswara University TnupathiPaper No RA 3 Dec 1986

PC h.iisi AU Hh.iiiu S Sahoo and R H Iyer Assay of Uranium in1 used Salt Cahes generated at the Natural Uranium Metal I'uejI abm ation I'l,jnt:> by Gamma ray Spectrometry Paper NO RA<i i l ) i d

PK Kaisi l ie S'harma.LR Sawant S Vaidyanathan and R H IyerPolypiopylene Weight Buroties as suiiable Containers for the

Storage- and Transportations of Uranyl nitrate Working StandardSolutions Results of a two year study. RA 11 ibid

P K Kalsi R C Sh.-inna L R Sawant S Vaidyanathan and R H Iyer.Contiolled Potential Coulometnc determination ol Uianium and

Iron in the same aliquot using a Pt gauze electrode Paper NoRA 12 ibid

RC Sharma PK Kalsi.LR Sawant. S Vadiyanathan and R H IyerIterative Compulafioricil mothod (or t/ie rapid analysis of Iron

and Plutonium by Controlled Potential Coulometry at the Ptelectrode in 1M HCIO., medium Paper NO RA 13. ibid

AK PandeyandRH Iyer Potentiometric Deterinmntion of Uraniumin Phsophate sulphate medium using Ti(Ill) as the reductant andits applicability in Nucelar Industry Sixth Conference of theIndian Council of Chemists Madura). University. Madutai Dec1986

74

BARCANNUAL REPORT

1986-87

R C Sharma, P K. Kalsi. G R Relan. S Vaidyanathar, and R.H Iyer,Preparation and characterization of U,Oe working standard"

ibid.

R H Iyer. "Solid State Nuclear Track Detectors (SSNTDs)a Versatileexperimental tool for research in basic and applied sciences.NUMAC Report No NUMAC/86-20/TECH/R & D/GEN. 1986.

LR Sawant. A.V Bhanu. PK Kalsi. RC Sharma. PC. Kalsi. SVaidyanathan and RH Iyer, "Standard Reference Materials forAssay oi Uranium and Plutonium". NUMAC Report No. NUMAC/86 21/TECH/R & D/GEN 1986

R.H. Iyer. "Some aspects of nuclear track registration from solutionmedia". 5th National Seminar on Solid State Nuclear TrackDetectors : Application to Nuclear Physics. Saha Institute ofNuclear Physics. Calcutta. March 1987 (Invited talk)

A.U. Bhanu. A.K. Pandey. PC. Kalsi and R.H. Iyer, "Alpha particleand fission fragment track registration characteristics of CR-39in solution medium", ibid.

A.K Pandey, PC Kalsi. A U. Bhanu and R.H. Iyer, "Possible effects ofhigh intensity ultra sound in chemical etching of particle tracksin polymers some observations", ibid

75

8. HEALTH AND SAFETY

BARCANNUAL REPORT

1986-87

8-1 Health Physics

Special radiation surveys were conducted duringrecommissioning and power operation of Dhruva. inRAPS I and MAPS-II and during fabrication of mixedcarbide fuel pins for FBTR

Advice was given on the safety aspects in thedesign of 500 MWe power reactor. Kalpakkam Repro-cessing Plant Project and Waste Immobilisation PlantProject Trombay Safety assessment of Indian nuclearpower plants was undertaken in the light ol Chernobylaccident

Stand .IIOIKJ computer systems h.ivc been installedin m,i|or lu.vlth physics units ro facilitate radiationpioU-f lion d<it<i t'.isc man.iqenirnt .nui to improveoperational etfuirnry A speu.ii training and quaiifiration programme has been introduced for healthphysics personnel in nuclear reactor and fuel reprocessmg plants

Radiation exposures to the radiation workers ofDAE were well within the permissible limits Radionuchde intakes by employees were also determined usingdiffoient u <• hni<|U(."s and resulting exposures werefound to be //ell within the permissible levels Analysiso! i.irli.ition doses to peisonnel in all DAE facilities< or.firmed the effectiveness ol the radiation protectionprocedures adopted

Industrial hygience surveys were conducted regularly in all DAE installations and special attentionwas given to all public sector undertakings under itThe levels of toxic chemicals in the work environmentwere found to be within the threshold limit values in allthe DAE institutions The accident frequency andseventy rates were also less compared to similarindustries in the country

Environmental surveys were conducted aroundall nuclear power plants and at other DAE sites Thecomputed doses to the population due to radioactivereleases from these facilities to the environment werefar below the authorised limits Radiation exposurelevel of a number of persons living around theseinstaJJatjons were determined, both external and internal.

and was found to be far below the levels prescribedby DAE which is much below the levels fixed byInternational Commission on Radiological Protection(ICRP). Periodic measurements of chemical pollutantsin the environment due to effluents released from NFC.Hyderabad. Rare Earths Plant, Alwaye, Uranium Mill.Jaduguda. Heavy Water Plant, Kota, and BerylliumPilot Plant. Vashi were found to be well below thewater quality standards prescribed by Indian StandardsInstitution (ISlj and the World Health Organisation(WHO)

A VHI" based telemonitoring system has beendeveloped for continuous monitoring of ambient ra-dution levels in the environment of a nuclear facilityand transmitting the digitised data to a central proces-sor .station

Several numbers of microprocessor based 4Kmultichannel analysers, micro R survey meter, auto-matic sample changer and alpha activity counting~setup and spark counter for counting of etched trac' nSSNTDs were fabricated and supplied to the usersImprovements in alpha ray spectrometry and etchedtrack counting in SSNTDs are being attempted inorder to measure very low levels of alpha emitters inbiological materials

The distribution of thorium in lungs, whole-body,blood and urine of occupationally exposed workerswere compared with those in general population Astudy has been taken up with Chitra Thirunal Instituteof Medical Sciences & Technology. Trivandrum. todetermine the distribution of thorium in different organsof laboratory animals

Under an Indo-French bilateral cooperation oro-gramme, comparisons are made between the passiveradon persona) dosimeter developed in the divisionand an active dosimeter developed by CENFAR. FranceStudies are also being conducted on a number ofcoordinated research programme sponsored by IAEA.

8-2 Radiological Protection

Radiation safety measures were continued to beimplemented in about 2.800 institutions located throu-

76

BARCANM'AL RKPORT

1986-87

ghout the country where radiation sources are usedfor various applications in medicine, industry, agricul-ture and research About 35,000 radiation workers arecovered under this scheme. Indi genous production ofthermoluminescent dosimeters has been taken up toreplace all tht .»lm badges used for personnel monito-ring in a phased manner Computers are now extensi-vely used in the analysis and processing of radiationdose data About 400 medical, research and industrialestablishments were surveyed for radiation levels andauthorisation and technical advice was given to alarge number c' medical and scientific institutions forthe procurement and installation of radiation sourcesRadiation saicty advice service and help were rendered to all radiation source users in the countryincluding medical, industrial, radiation sterilisationunits

The radiation monitors in various nuclear reactorswere calibrated An intermediate energy neutron sourceol 0 5 keV energy and a standard of photon radiationat 60 keV were established for calibration purposes

Radioactive fall out in India from reactor accidentat Chernobyl in USSR in April 1986 was extensivelystudied as a part of countrywide environmental moni-toring for natural and fall out radionuclides. A largenumber of samples, including milk powder, tea, grassand edible articles were analysed. Food items importedand meant for export were also subjected to analysis,to determine radioactivity levels. The results showedthat radioactivity level in air. land and food articleswere within the back ground levels. Microwave instal-lations surveyed for non-ionising radiation on a routinebasis and indoor radiation measurements were donein Bombay and a number of other places in India.

Inspection Section

Inspection of various constituent units of DAE wascarried out to confirm the adherence to various factoriesacts and laws of the Government of India. Fresh andnecessary guidelines were prepared for the complianceof the laws and also safety provisions applicable tonuclear installations.

77

Publications

BARCANNUAL REPORT

1986-87

V. Abrol, "Design Basis Tropical Cyclone for the East Coast of India"Mausam. 1986.

M.C. Abani, M.M.K. Suri. S. Somasundaram and S.D. Soman. "Technicalrequirements of a computer aided health Physics survellanceprogramme", Bulletin of Radiation Protection, 9, Nos. 1 & 2,1986.

I.S. Bhat. et al, "Behaviour of Ni-63 in the marine environment", ibid.

IS. Bhat. et al. "Distribution of Pu in the Tarapur marine environment",ibid. 9. No. 3, 1986.

A.M. Bhagwat, "Plutonium and the human system-A short Review",ibid.

B.D. Bhasin, G.N. Kalyane and S.P. Kathuria. "TL Characterisitcs ofLiF pellets for reassessment of absorbed dose by Photo-transferredThermoluminescence". ibid, 9. Nos. 1 & 2, 127, 1986.

B.D Bhasin, "An inexpensive crystal growing system for LiF and TLCharacterisation", Proc. DAE Symp on Crystal Growth. VECCCalcutta. Ian. 1986.

S. Bhati. S.P. Gard and R.C. Sharma. "Monte Carlo Simulation ofPhoswich response to a beta emitting nuclide present in the liverof MIRD Phantom", VI National Symp. Radiation Phys", Kalpakkam,March 1986.

M.V.M. Desai, V.V. Kulkarni. N.N. Dey and K.C. Pillai, "Distribution ofCesium-137 in Sand. Silt and Clay Fractions of Marine sediments"Bulletin of Radiation Protection, 9, No. 1 and 2, 1986.

S.B. Dabhadkar, DR. Raipurkar and K.V. Kamath, "Health PhysicsAspects of Radiotracer Experiments", ibid, Vol. 9, No. 3, 1986.

R. D'Souza, V.N. Shastry, G.R. Doshi, T.M. Krishnamoorthy and T.P.Sarma. "Disposal of radioactivity onto Arabian sea-bed-Radio-logical Impact Calculations", ibid. 9. Nos. 1 and 2. 1986.

K.P. Eappen, P.M. Markose and K.C. Pillai, "Amine Extraction forUranium Estimation", ibid.

S.P. Garg, R.C. Sharma and S. Somasundaram, "A shadow shieldbed counter of in-view Uranium detection", Rad. Prop. Dos. 15.61, 1986.

S.P. Garg and R.C. Sharma, "Non-applicability of gas-gain formulaefor prediction of light gain in gas Scintillation Proportionalcounters", VI National Symp. Radiation Physics. Kalpakkam,March 1986.

K.K. Gopalkrishnan. S.G. Sahasrabudhe and M.R. Iyer, "An AcffivationMethod for the assay of enrichment", Presented at the XIIIAnnual Conference on Radiation Protection. Calcutta. March1986

V.K. lain, "Thermoluminescence mechanism in LiF (TLD-100) from90-300 K' Soiid St. Physics. 19. 1719, 1986.

V.K. Iain, "Mechanism of Thermally Stimulated Luminescence in LiF(TLD-100) below room temperature". Paper presented at the 8thInt. Conference on Solid State Dosimetry. Oxford, U.K. 26, 1986.

V.K. Iain, "Use of thermoluminascent dosimeters in measurement ofradiation", Hindi Seminar on Nuclear Science and Technology,Teaching and Research, Dec. 1986.

D.D. laiswal, H.S. Dang, V.R. Pullatm, K.B.S. Murthy. P.P.V.J. Nambiarand CM. Sunta, "Urinary Thorium levels in normal and group ofOccupationally Exposed Persons", Bulletin of Radiation Protection9. Nos, 1 and 2. 1986.

K.V. Kamath, R. Venkatramani. D.P. Pirnputkar and S.K. Mehta,"Radiation safety experience in 60Co processing hot. cells in tencontinuous years of their operation", ibid. No. 3, 1986.

A.H. Khan and M. Raghavayya, "Radiological characteristics ofuranium mine atmosphere", ibid, Nos. 1 and 2, 1986.

S.P. Kathuria, S. Somasundaram and T. Subbaratnam, "Trainingprogrammes in radiation protection and certification of healthphysics personnel in nuclear fuel cycle facilities", ibid

K.N. Kirthi, S.D. Pradhan and S. Somasundaram, "Design safetyconsiderations for pelletron acceletor", ibid.

K.N Kirthi, S. Sengupta, T.S. Iyengar, S. Somasundaram, PN.Moorthy and R.M. Iyer, "Safety considerations during the operationof a 7 MeV electron linear acceletor", ibid.

K.V. Kamath. I.L. Kapoor, S.K. Mehta and S.R.K. Iyer, "Safety experiencein transportation of radioactive materials". 1986.

L.M. Kukreja, V.B. Joshi, A.M. Bhagwat, U.K. Chatterjee and D.B.Bhawalkar, "Laser induced enhancement in the sensitivity ofpolymeric nuclear track detector CR-39", Applied Physics Letters,49, No. 3, 181. 1986.

A.R. Lakshmanan, T. Krishna Rao and S. Viswanathan, "Nitrate andFluoride levels in Drinking waters in the Twin-Cities of Hyderabadand Secunderabad", Indian Journal Environ, Hlth, 28. No. 1, 39,1986.

O.H. Mahajan, T.R. Joshi, K.S.V. Nambi and R.V. Joshi, "Gamma rayradiation dosimetry using a NACL",: Ba(T) thermoluminescentphosphor", Health Physics 51, 127, 1986.

G. Muthukrishnan and D.V. Gopinath, "Pion transport studies". Phys.Med. Biol. 31, No. 1, 17. 1986.

R. Mukherji. S.K. Basu, M. Bar and B.K. Khasnabis. "Measurement ofinduced activity at VECC". Bulletin of Radiation Protection. 9.Nos. 1 and 2, 1986.

G. Muthukrishnan, "Monitoring of cyclotron produced radiations",ibid.

K.K. Narayanan, P.R. Pillai, K.N. Kutty. K. Somanathan, Jacob John, S.Janardhanan and P.M. Ouseph, "In sevice Ventilation Study ofHot Cells Using a radioactive tracer", ibid, No. 3, 1986.

K.K. Narayanan, B.M.L. Sah and T. Subbarafnam, "Application of theICRP Paris Statement (1985) for revision of Derived Limits forEnvironmental Discharges from Indian NPPs", ibid. Nos. 1 and 2.1986.

78

BARCANNUL KEPOKI

1986-87

K.S.V. Nambi. V N. Bapai. M. Devid, V.K. Sundaram, CM. Sunta andS.D. Soma/i, 'Natural background radiation and population dosedistribution in India". BARC Publication. 30 1986

K.S.V Nambi and S.D Soman. "Inverse correlation between cancerrisk and natural background radiation in five Indian cities". Bull.Radn Prot. 9. Nob. 1 and 2. 115. 1936.

K.S V. Nambi and A V Sankaran, "ESR dating of Caterite of Basaltic-origin in ESR dating and Dosimetry .Ed by M Ikeya and T. Miki.Ionics. Tokyo 175. 1986.

K S V. Nambi and M J Aitken. "Annual dose conversion factors forTL and ESR dating. Archaeometry". 28(1). 107. 1986

RN Narendaran Nair. TM Krishnamoorthy and TP Sarma. "Anomogram to Compute Concertration jf radionuclides in Canals"Bull Rad Prot. 9. Nos 1 and 2. 198G

A C Paul and K C Pillai. "Distribution and Transport of Radium in aTropical River' Water Air and Soil Pollution 29 261 1986

A C Paul and K C Pillai. "Transfer and Uptake of Radium in a Naturaland in a Technologically Modified Radiation Environment". JEnviron. Radioactivity 3 55. 1986.

A C Paul and P.MB. Pillai. Radiation exposure in the mining andmineral separation of coastal sands". Bulletin of Radiation Pro-tection. 9. Nos. 1 and 2. 1986.

V.K. Panday. M. Parameswaran and S.D. Soman. "The distribution ofmercury in the Indian Population". Sci. Tot. Environ, 48 223.1986.

V.K. Panday. ."Calcium and Magnesium". Chapter 40. " Quantitativetrace Analysis of Biological Materials". Elsevier Sci PublishersEd H A. Nekenzie and L.L'. Smythe.

R.G. Purohit. V.K. Jain and T. Subbaratnam. "A method of determing3H intakes as fraction of ALP, Bulletin of Radn. Prot. 9. 47.1986.

Pushpa Raja. S Somasundaram, P.P.V.J. Nambiar. SB. Watamawarand R. Rangarajan. "Safe Handling of Natural Uranium ". BARC/I-879. 1986.

S.S Ranade and V.K. Panday. "Magnesium in neoplastic tissues.Cells and Subcellular fractions'". 2nd Ann. Meeting of Am. Soc.for Magnesium Research. Salt Lake City USA, Sept. 1986.

M. Raghavayya. AH. Khan and G. Jha. "Dose estimation for Jaduguda

mine workers". Bulletin of Radiation Protection, 9. Nos. 1 and 2.1986.

P M. Ravi. M.R. Iyer. S G. Sahasrabudhe. M.S. Subramanian and S.Somasundaram. "Estimation of ""I by low energy photonspectrometry and neutron activation analysis", The DAE symp.and Radiochemistry. Tirupathi. Dec. 1986.

S.D Soman. T.M. Krishnamoorthy. G.R. Doshi, S.H. Sadarangani. M.L.Joshi, S. Rajan and P.K. Vaze. "MC Releases from nuclearfacilities". Annual Report of The Research contaract Rc/2904/R4/India IAEA working group Argentina, Nov. 1986.

R.C. Sharma. T. Surendran. T.K Haridasan. G. Knshnamachan -ind SSouiasundaram. "Measurements on IAEA realistic TJioraxPhantom. Evaluation and efficacy to investigate cases of internalContamination". IAEA Second Research coordination Meeting onthe use of Realistic Chest Phantom for the calibration of thecounting facilities for assessment of Pu & other actimdesdeposited m the lungs". Tokyo. Japan. May 1986.

G K. Snvastava. "Analysis of radium body burden data of uraniummine workers". Bulletin of Radiation Protection. 9. Nos 1 and 2.1986.

CM. Sunta. H.S. Dang and DO laiswal. "Thorium in Man and

Environment". International Conference on Low level Measure-ment of Actinides and long lived Radionuclides in Biological andEnvironmental Samples. Lund. Sweden June 1986.

S M Shah and V.R. Deo. "Dielectric Plastic films as high leveldosimeters". Rad Phy. & Chem 27. No 5. 329. 1986

N. Swaminathan. A.M. Bhagwat and S.D. Soman. "Evaluation ofneutron dosimetric of CR-39 (PM-555I00) By electrochemicaletching (ECE)", VI Nat Symp. on Rad. Phys. March 1986

S.M. Shah and V.R. Deo, "Dielectric Plastic Films as High levelDosimeters". Radiat. Phys. Chem. Vol-27. No. 5, 329. Int. J. Radiat.Appl. Instrum Part C. 1986

J. Swarup and L.H. Pishori, "Transmitted Photon Spectra of Low-Energy Gamma Rays through Nuclear Grade Graphite". Appl.Radiat. 1st. Vol. 37. No. 1.13. Int. J. Radiat. Appl. Instrum. Part A.1986

G.K. Snvastava, M Raghavayya. P. Kotrappa and S. Somasundaram."Radium 226 Body Burden in U miners by measurement of Rn inExhaled Breath ". Health Physics. 50. No. 2, 217, 1986.

V.N. Shastry, A.C. Paul and K.C. Pillai. "Environmental Safety Eval-uation of mixed Cake Storage in Underground Trenches". Bulletinof Radiation Protection 9. No. 1-2, 1986.

K. Unnikrishnan. K.B.S. Murthy. Shiv Data and CM. Sunta, "Estimationof Intake of Pu and Th from the Measurement of Lung Burdensand Elimination Rates". Implications for Internal monitoringPeriodicity, ibid.

K. Unnikrishnan, K.B.S. Murthy, and CM. Sunta, "Organ Burdansand Elimination Rates of Inhaled Thorium and Plutonium". BARC-1312, 1986.

R Venkatramani. and G.R. Naik. "Gamma Radiation Dosimetry inKilorad range using trihydroxy methyl aminomethane". Radio-chem. and Rad. Chem. Symp. Tirupathi. Dec. 1986.

M.S. Valiathan. C.C. Kartha. V.K. Panday H.S. Dang and CM. Sunta."Geochemical basis of endomyocardial fibrosis". Brit J. Cardio-vascular Research. 1986.

S. Venkatesan. "Study of Response of Process Radiation Monitoringand the application to determine Alarm and Trip Points". Bulletinof Rad. Prot. 9. Nos. 1 and 2. 1986.

79

BARCANNUAL RKPOKT

1986-87

S. Venkatraman and A.H. Khan. "Radium-226 content of effluentsfrom a copper mine and concentrator", ibid.

AC. Paul and K.C. Pillai. "Distribution and transport of radium in atropical river". Waier, Air and Soil Pollution. 29. 261, 1986.

G Muthukrishnan and D.V. Gopinath, "Pion transport studies'. Phys.Med. BioL 31. 17. 1986.

G.K. Srivaatava. M. Raghavayya. P. Kotrappa and S. Somasundaram,Radium 226 Body Burden in U Miners by Measurement of Rn in

Exhaled Breath". Health Physics 50. No. 2. 217. 1986.

A C Paul and K C Pillai. 'Transfer and Uptake of Radium in a Naturaland in a Technologically Modified Radiation Environment". J.Envuon Radioactivity. 3. 55. 1986.

M V M Desai. V V Kulkarni. N.N. Dey and K.C Pillai. "Distribution ofCesium 137 in Sand. Silt and Clay fractions of marine sedements".Bulletin of Radiation Protection. 9. Nos. 1 and 2. 1986.

V N Sastry. A C Paul and K.C Pillai. "Environmental Safety Evaluationof mixed cake storage in underground Trenches".

A R Lakshmanan. T. Krishnan Rao and S Viswanathan. "Nitrate andFluoride levels in Drinking waters in the Twin-cities of HyderabadandSecunderabad". Indian Journal Environ. Hlth.28. No. 1, 1986.39. 1986.

D.D. Jaiswal. H.S. Dang, V.R. Pullat. K.B.S. Murthy, P.P.V.J. Nambiarand CM Sunta, Urinary Thorium levels in normal and a Group ofOccupationally Exposed persons". Bulletin of Radiation Protection.9. Nos 1 and 2. 1986. _

V.K. Panday. M. Parmeswaran and S.D. Soman, "Ther Distribution ofMercury in the Indian Pop ilation". The Science of the TotalEnvironment. 48. 223. 1986.

J. Swarup and L.H. Peshori. "Transmitted Photon Spectra of LowEnergy Gamma Rays through Nuclear Grade Graphite". Appl.Radiat. Isot.. 37(1). 13. 1986.

S.M. Shah and V.R. Deo. "Dielectric Plastic Films as High level

Dosimeters". Radiat. Phys Chem. 27(6). 329. 1986.

K.P. Eappen. P.M. Markose and K.C. Pillai. "Amine Extraction forUranium Estimation", 13th 1ARP Conf. 1986.

V.V. Shirvaikar. "Meteorological instruments in air pollution", inWorkshop on "methods and instrumentation in air pollutionmonitoring and control". Western Regional Instrumentation.Bombay. July. 1986.

SP. Kathuna. S. Somasundaram and T. Subbaratnam. "Trainingprogramme in radiation protection and certification of HealthPhysics Personnel in nuclear fuel cycle facilities". Bull. Rad.Prot., 9. 87. 1986.

B.D. Bhasin. G.N. Kalyane and S.P. Kathuria. "TL Characteristics ofLiF (P) pellets for reassessment of absorbed dose by PTTL", ibid,127. 1986.

A.K. Nehate. T.R. loshi, SP Kathuria and RV Joshi. "Effect ofvariable UV dose on TL of NaCl: (T) material". Health Physics. 50.485. 1986.

S.K Dua. N. Gopalan. P Kotrappa and P.P. Chakraborty. Doublefilter method for measurement of concentration of radioactiveKrypton and Xenon gases". Radiation Prot. Dosimetry. 15. No 3,203. 1986.

P.M. Ravi. M.R. Iyer. S.G. Sahasrabudhe. M.S. Subramanian and S.Somasundaram. "A method of quick estimation of 1-129 bv lowenergy photon spectrometry". J. Radioanal. Nucl. Chem. Letters.108, 99. 1986

P.K. Gopalkrishnan. S.G. Sahasrabudhe and M.R. Iyer. "An activationmethod for the assay of U-enrichment", XIII Annual Conferenceof IARP. Calcutta, 1986.

K N. Kirthi, S.D. Pradhan and S. Somasundaram. "Design safetyconsiderations for pelletron accelerator". Bull. Rad. Prot.. 9, 1,1986.

K.N. Kirthi. S. Sengupta. T.S. lyengar and S. Somasundaram. "Safetyconsideration during the operation of a 7 MeV electron linearaccelerator". Bull. Rad. Prot.. 9. 13, 1986.

K.C. Pillai. "Low level measurement of actinides and long Uvedradionuclides in biological and environmental samples". Sym-posium held at University of Lung. Sweden. 1986.

N. Swaminathan. A.M. Bhagwat and S.D. Soman, "Evaluation ofneutron dosimetric properties of CR-39 (PM-555-100) by electro-chemical etching (ECE) technique". VI Nat. Symp. on Rad Phys..Kalpakkam, 1986.

A.M. Bhagwat. "Plutonium and the human system". Bull. Rad. Prot..9, 27. 1986.

L.M. Kukreja. V.B. Joshi. A.M. Bhagwat. U.K. Chatterjee and D.D.Bhawalkar. "Laser induced enhancement in the sensitivity ofpolymeric nuclear track detectors ". Appl. Phys. Letters. 49.1986.

M.P. Mogal. A.M. Bhagwat, R. Venkatramani and C Rangarajan."Radiation induced changes in mechanical properties of insulatingmaterials", Solid State Phys. Symp.. Pantnagar. 1986.

M.V.M. Desai. V.V. Kulkarni, B.F. Chhapgar and K.C. Pillai. "Particlesize distribution in the bottom sediments of Bombay HarbourBay". Ind. J. Mar. Sci. 15. 246, 1986.

K.S.V. Nambi and S.D. Soman. "Inverse correlation between cancerrisk and natural background radiation". Bull. Rad Prot.. 9. 115,1986

M.C. Abani. M.M.K. Sun. S. Somasundaram and S.D. Soman. "Technicalrequirement of a computer-aided Health Physics surveillanceprogramme", ibid 91. 1986.

R.S. D'Souza. VIM. Sastry. G.R. Doshi. T.M. Krishnamurthy and T.P.Sanna. "Disposal of radioactivity onto Arabian Seabed - Radiolo-gical impact calculations", ibid. 9, 143. 1986

80

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IS. Bhat. A.G. Hegde. PC Verma and R.S. Iyer, "Behaviour of Ni 63m the marine environment" ibid. 9. 139. 1986.

K. V. Kamath. J L Kapoor. S.K. Merita and S.R.K. Iyer. "Safety experiencein transportation of radioactive materials", ibid. 9. 37. 1986.

AH. Khan and M. Raghavayya. "Radiological characteristics ofuranium mine atmosphere", ibid. 9. 57. 1986

K Unnikrishnan. K B S. Murthy. Shiv Datta and CM. Sunta, "Estimationuf intake of Plutonium and Thorium from the measuremer,; oflung burdens and elimination rates: implications for internalmonitoring periodicity", ibid. 9. 123. 1986.

VK Bhargava. ML Bhutani and C.PR Nair. "Radiation Hazards-Consideration in C T X-ray installation". (Abst.) Proc. 39th AnnCong of Indian Radinl Imaging Assoc . Jaipur. 1986.

G. Subrahmanian. SP Zaparde. VK Bhargava and C.P.R. Nair.'Radium in India Certain Recent Incidents and a Programme o!Replacement". Bull of Radinl. Plot.. 9 (1 and 2) 111. 1986

V.K Bhuryava. C PR Nair. Dina Nath. PN Rainaswainy and SG.Parchure. Current status in Medical uses of Radiation sourcesin North Easten Region of the Country" ibid. 29. 1986.

VK Bhatgava "Chikithsa Evani Udyocj main Vikiran Samrakshana .Vaigyanik. 4. 45, 1986

V K Bharqava. Ml Bhutani and K.K. Sanu. "Status of Radiop'herapyfacilities and Medical Physics Application in the Radiotherapypractices in India '. (Abs.) Med Phys. Bull 11 (3 and 4). 435. 1986.

ML Bhutani K.K. Sanu. HA Sabuwala. V.K Shirva and V.K.Bhargava. Radiation Safety Status or X ray Installations inIndia '. (Abs ) ibid. 459 1986.

H A Sabuwala. V.K. Shirva and V.K Bhargava. "Radiation Incidentsin the Radiotherapy Departments of Medical Institutions in IndiaAn overview". (Abs ). ibid, 499 1986

PN Ramaswamy. UB Tripathi. V K Bhargatfa and G Subrahmanian."Our Experience in planning of Teletherapy Installations inIndia . (Abs ) ibid. 507. 1986

V Jayalakshmi. R. R Kamath. V.K. Shirva and PS Viswanathan.' Some suggested layout for Housing Teletherapy Units". (Abs )ibid 502 1986

SB Naik PS Viswanathan. A M Pendse and B N. Vithal. PerformanceTests on a Newly Installed Telecobalt Unit". (Abs ) ibid. 57. 1986.

SB Naik A K Gopalaknshnan. P S Viswanathan. D D. Deshpande.Radiological Protection Survey of an X ray C.T. Scanner Instal

lations , (Abs ). ibid. 466 1986.

A Shanta U B Tnpathi and KB Das.sources . (Abs ), ibid 217. 1986

Dosimetry of Ir-192 line

U.B Tripathi. "General Formulation for Depth rose Computation inPhoton Beam Dosimetry". (Abs.). ibid. 12. 1986

U B. Tripathi. "An Analytical Equation for Brachytherapy DosimetncCalculation". (Abs.). ibid. 167. 1986.

S G Sawant. G. Janakiraman. P Sethulakshmi and PS Iyer. "ComputerPackage For planning of a Radiation Therapy Installation(Abs) ibid. 129. 1986

G. Janakiraman. S.G. Sawant. P. Sethulakshmi and Kanta Chhokra."Regulatory Requirements for Setting up Radioimmunoassay(RIA) Laboratories in India and Their Present Status . (Abs.). ibid.497, 1986.

P. Sethulakshmi. P.N. Ramaswamy, Kanta Chhokra and G. Subrahmanian."Current Regulatory Requirements for Establishing RadiotherapyFacilities in India". (Abs.). ibid. 506. 1986.

Kanta Chhokra. P. Sethulakshmi and P.S. Iyer. "Experience in thePlanning of Brachytherapy Departments from Radiation SafetyStand Point". (Abs.). ibid. 526. 1986.

P.S. Iyer. Importance of Reducing Medical Radiation Exposure".Ind. J. Radiol and Image.. 40(2). 161. 1986.

P.S. Iyer, "Involvement of Medical Physics in Radiation Oncology".Ind J. Radiat. One. 1. 13. 1986.

P.S Iyer. "Radiography and Dosimetry or Template Implants". ProcTech. Trans. Prog. Ind. Soc One. Bombay. 1986.

P.S. Iyer. "Radiation Physics . Applications in Oncology". Conf onRadn. Phys.. Kalpakkam. 1986.

PS Iyer. "Radiation Protection of Patients and Workers'. (Abs.).Natl. Sem. on Rad. Exp.. Bombay. 1986.

P.S Iyer. "Radiation protection in Brachytherapy". (Abs.). Workshopon Cancer. Calcutta. 1986.

K.S. Sharada. "Alpha Response as Some TL Materials". Med. Phys.Bull 11 (3 and 4), 565. 1986.

K.S. Sharada. Studies on the Effect of grain size on the Response ofa CaSO, Dy Teflon disc Dosemeter for Monoenergetic Electronsand Beta rays, Phys. Med. Bio.. 185, 31. 1986.

IS. Bisht. A.N. Nandakumar. K.C. Upadhyay. G. Subrahmanian."Transport of Radioactive Material Associated with Nuclear FuelCycle". Bull Radiat. Prot. 9(3). 17. 1986.

AN. Nandakumar. IS. Bisht, G Subrahmanian. "Experience inRegulating Transport of Radioactive Materials in India". Proceedings of the IAEA International Symposium on the Packaging andTransport of Radioactive Materials (PATRAM 86). Davos. Switzerland.1986

A. Shanna. G. Venkataraman and G. Subrahmanian. "TheoreticalCalculations for Thermal Test for Type B' Package Containing10000Ciof Cobalt-60Teletherapy Source'.Med. Phys Bull 11(3and 4). 527. 1986

81

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1986-87

V G.R. Subramaman. P. Subramanyam. MS Sundaram and DR.Arora. 'Minimising Radiation Hazards while using IndegenousIndium Radiography Cameras for Pipeline Inspection work atProject Sites". Bull Radiat. Prot. 9. 21. 1986.

A.R. Lakshamanan. B Chandra. AS. Pradhan and S.J. Supe, "Appli-cation of Thermoluminescence Dosemeters for Personnel Moni-toring in India". Rad. Prot. Dosim.. 17. 49. 1986.

A.R. Lakshrnanan. S.S. Shinde and R.C. Bhatt, "A Comparative Studyof Some CaS04 Thermoluminescent Phosphors for RadiationDosimetry". Rad. Prot. Dosim., 16, 237, 1986.

A.R. Lakshmanan. "A study of the Peak Ratios in CaF,: Tin (TLD- 300)as a function of the Beta Energy", ibid. 12, 375, 1986

A R. Lakshmanan and S.V Mohali. "Thermoluminescence of AlkaliHalies Doped with Alakaline Earth Impurities, "Bull. Materi. Sci..8. 541. 1986.

Bhuwan Chandra. S.S. Shinde and R.C. Bhatt, "Study of the TI,Characteristics of LiF (Mg. Cu) Phosphor for its use in MedicalPhysics", Medi. Phys. Bull.. 11. (3 and 4) 569, 1986.

Bhuwan Chandra, A.R. Lakshmanan, S.S. Shinde and R.C. Shaft."The Role of Vacancies in the Thermoluminescence of LiF: Ti rndCaSCvDy". Radiat. Protect. Dosim., 17. 451. 1986.

A.S. Pradhan. J. Rassow and W. Hoffmann. "Fast Neutron Responsesof CaF., Tin Teflon TLD Diacs of Different Thickness", ibid. 15,233. 1986.

AS Pradhan. RC Bhatt and S J. Supe, "Detection of LeakageNeutrons from Medical Electron Accelerator using TLD", Med.Phys. Bull.. 11 (3 and 4), 516. 1986.

AS Pradhan, R.C. Bhatt and J. Rassow. "Dosimetry of Mixed Fieldsof Neutrons and Gamma Rays using Sensitized and UnsensitizedLiF TLD-700". ibid. 519. 1986.

A.S. Pradhan, "Vikiran Karmikon Ki Suraksha Ka Monitoran". Vaig-yanik, 4, 24, 1986.

J.K. Srivastava and S.J. Supe. "Gamma Radiation and ThermalTreatments for Improving Glow Structures on CaSO,: Dy", Proc.Asian Regional Conf. Med. Phys., Bombay, 573. 1986.

I.K. Srivastava and S.J. Supe. "Effect of Higher Temperature Treatmenton Reusability of CaSO,:Dy TL Phosphor Exposed toIncreasingly High Gamma Doses". J. Radioanalyt. Nucl. Chem.(Letters), 104, 245, 1986.

J.K. Srivastava and S.J. Supe, "Effect of Radiation Quality on Ther-moluminescence Fading of CaS04: Dy in the High Dose Region",Nucl. Instr. Methods in Phys. Res..A, 243, 567. 1986.

P.K. Gaur and TV. Venkateswaran, "Radiation Safety in Radiolu-minous Paint Workshop Handling Tritium Activated Paint". Bull.Radiat. Prot., 9(4), 13, 1986.

A.V. Dere. A.S. Patil, B. Shetty, K.L. Popli and R.K. Kher. "Effect ofBackcatter Photons and Build up Electrons in the Design of TLDBadge", Bull, of Radiat. Prot., 9(4). 19, 1936.

K.G. Vohra. G. Subrahmanian. AN. Nandakumar. R.K Kher andS.R.K Iyer. "Methods of Assessment of Individual and CollectiveDoses to Transport workers and Members of the Public duringthe Transport of Radioactive Material". IAEA-TECDOC-375. 85.1986.

S.K. Gupta. R.K. Kher and S.J. Supe. "External BremsstrahlungContribution to the Absorbed Dose in CaSO, Dy discs used forPersonnel Monitoring by Complete Absorption of Beta rays in thePhoton Energy Compensating Filters". Bull of Radiat. Prot.. 9 (1and 2), 49, 1986.

K.L. Popli, R.K. Kher. S.S. Sanaye. K.S. Shenoy and S.J. Supe,"Retrieval and Recycling of the used TLD Discs for PersonnelMonitoring", Bull, of Radiaf. Prot.. 9(4). 23. 1986

R.L. Pandey, PH. Patel and Si. Supe, "Analysis of ExcessiveExposures Received by Radiation Workers in Medicine. Industryand Research Organisations". Bull, of Radiat. Prot.. 9 (1 and 2).99, 1986.

M. Thomas, R.L. Pandey, P.H. Patel and S.J. Supe. "Dose densityresponse and latent image fading in Kodak type-2 PersonnelMonitoring Films in a Water Proof Plastic Packing", ibid. 53.1986.

S.K. Gupta. R.K. Kher and S.J. Supe, "Monte Carlo Calculations ofdose Distribution in the ICRU Spherical Phantom". Med. Phys.Bull., 11 (1 and 4). 561, 1986.

V.K. Nelson. K.L. Popli and R.K. Kher, "Depth Dose Measurementusing TL Dosemeter for Cobalt-60 and Megavoltage Photon ibid.147, 1986.

K.S. Shenoy, K.L Popli. S.K. Gupta, D. Krishnan. R.K. Kher and S.J.Supe. "Measurement of Dose Equivalent Index Quantities in theICRU Sphere using TLD Discs", ibid. 531. 1986.

P. Ayappan and M. Sethuraman, "Precision and Accuracy of TLPersonnel Monitoring Dosimeters", ibid, 532. 1986.

R. Sadogopan, P.H. Paedasani. S.J. Supe, and P.H. Patel. "RiskAssessment of Medical Radiation Workers", ibid, 563, 1986.

M.P. Dhairyawan. G. Venkataraman and O.P. Masand, "Implicationsof Recent ICRP Recommendations on Neutron Monitoring",Bulletin of Radiat. Prot.. 9. 95, 1986.

B.L. Gupta. S.R. Nilekani. P. Gebringer and A. Miller. "Dose Inter-Comparison for 400-500 KeV Electrons using FWT-60 Film andGlutamine (Spectrophotometric Readout) Dosimeters". Int. J.Radiat. Appl Instrum. Part A : Appl. Radiat. Isot., 37. 965, 1986.

B.L. Gupta and R.M. Bhat. "Calibration of High-Dose RadiationFacilities (Hand Book)". BARC-1303. 1986.

B.L. Gupta, U.R. Kini, R.M. Bhat and U. Madhvanath, "IntercompaYisonof Ionization and Chemical .Dosimetry Techniques for Centralaxis Depth-dose Measurements from Cobalt-60 Teletherapy Ma-chines", Special issue, Med. Phy. Bulletin 11, (3and4). 28.1986.

82

BARCANM'AL RKPORI

1986-87

I S Sachidanandam. The Photon in Perspective", Sixth Symp. onRadiation on Physics , of the Indian Society of Radiation Physics.KaJpakkam. 1. 1986 (Invited talk)

MA. Prasad. "A Restricted Random Walk on a one-dimensionalRandom Chain". Physics Letters 117(5). 217. 1986.

K Unnikrishnan and M.A. Prasad, 'Electron Atom Scattering in aLaser held". Physical review A 34. 3159, 1986.

Dayashankar. ST. Suh and A.E S. Green. "Electron Impact CrossSections and Spatial Aspects of Electron Energy Degradation inWater Vapour". Int. J. Quantum Chemistry : Quantum ChemistrySymposium No 20. 111. 1986.

A.E.S. Green and Dayashankar. "Analytic Electron Impact CrossSections for Water Vapour". 50th Annual Meeting and GoldenAnniversary of the Florida Academy of Sciences. Florida. U.S.A.125, 1986.

Dayashankar. "Stopping Cross Sections of Krypton and Xenon forlow Energy Electrons. Proc. VI National Workshop on Atomic &Molecular Physics. Varanasi. 48. 1986.

Dayashankar. ST. Suh and A.E.S. Green. "Yield spectre in WaterVapour for Electron Impact, ibid. 75, 1986.

V.V. Dcorukhaker and M.S.S. Murthy, "Effect of anoxia on CellularUptake of Drugs". Proc. Asian Regional Conference on MedicalPhysics, Bombay, 365. 1986.

M.SS. Murthy and. K.B. Anjaria, "On the Genetic Status of NormalCells Surviving a Combined Modality for Tumour Therapy", ibid.381. 1986.

V.V. Deorukhaker, B.S. Rao and K.B. Anjaria. "Hyperthermic Inhibitionof Recovery from Radiation Damage in Diploid Yeast", Symp. onBiophysical Aspects of Cell Structure and Function, Lucknow.65, 1986

B.S. Rao, "Radiation Carcinogenesis", Proc. workshop on ICRP andRelated Publications , Bombay. 33, 1986.

B.S. Rao. "Non Stochastic Effects or Radiation", ibid, 43. 1986.Gouri Unnikrishnan. Kamala Gopakumar and D. Krishnan. "Ozone

Plus Radiation on Aqueous Solution of DNA-A suggestion fortreatment of waste water", Radiat. Phy. Chem. 28. 281, 1986.

M.H. Doshi, G. Unnikrishnan, K. Gopakumar, N.S. Bhandari and D.Krishnan. "Estimation of Inorganic Phosphate in Aqueous Solutionsof DNA : A modification of the Berenblum-Chain method". J.Radional. Nucl. Chem. Letters 103, 291, 1986.

D. Krishnan and Gouri Unnikrishnan. "Routine Internal Monitoringand ALT', Letters to the Editor. Radiat. Prot. Dosimetry, 12, 377,1986.

D. Krishnan and DR. Singh. "A Theoretical Approach to the Effect olDose Modifiers on Fractionation in Radiotherapy". (Abs.), Med.Phy. Bull. 11, No. 3 and 4. 339. 1986.

D. Krishnan. "Patient Dose in Diagnostic Medicine : How to Quantitate"(Abs.), ibid, 456. 1986.

PS. Rao and S C Mishra. Neutron Sensitivity of Vanadium SelfPowered Neutron Detectors". Nuclear Instr. and Methods inPhys and Research A 253. 57. 1986

D Sharma. M.G. Shaham. U.V Phadnis and B K Kambo) 14 MeVNeutron Flux Measurements using FeM and its InternationalIntercomparison', (Abs.). Proc VI National Symp. on RadiatPhys.. Madras. C 62. 1986

B.K. Kamboj. M.G. Shahani. U.V. Phadnis and D. Sharma. Indium asa Secondary Standarad for 14 MeV Neutrons". (Abs.). ibid C 63.1986.

U.V. Phadnis, B.K. Kamboj, M.G. Shahani and D. Sharma. "Animproved thermal neutron flux density standard for calibrationof large detectors". (Abs.). ibid. C 64. 1986.

B.K. Kamboj and M.G. Shahani. "Precise measurement of the Gammato Neutron ratio of an Am-Alpha-Be neutron source using animproved manganese bath technique". Nuclear Instruments andMethods in Physics research A 244. 513. 1986.

K.D. Pushpangadan, G. Subrahmanian, A. Kannan and V.D Kadam."Status of Dosimetry in Radiotherapy Centres in India". Med.Phys. Bull.. 11 (3 and 4), 41. 1986.

A. Kannan and S.B. Naik. "Procedures for Absorbed Dose Calibrationand use of BARC Make Secondary Standard Dosimeter as per theRecent IAEA code of practice, ibid, 146. 1986.

V.W. Naik, P.N.M.R. Vijayam, A. Kannan and PS. Jadhavagaonkar."Calibration of Brachytherapy Sources", ibid. 221. 1986.

K.N. Govindrajan. "Paterson-Parker Tables in units of Air Kerma".ibid. 223, 1986.

P.N.M.R. Vijayan. V.W. Naik and A. Kannan. "Calibration of RadiationMonitoring Instruments in terms of Dose Equivalent Units", ibid.547. 1986.

A. Sankaran. "Investigations on a Scanner for Radiation FieldStudies". Ph.D. Thesis Bombay University. March 1986

S Kannan, M.D Lalsare and P. Gangadharan, "A MicroprocessorBased Radiation Survey Meter". Bull. Radiat. Prot.. 9. 41, 1986

A. Sankaran. "Derivation of Absorbed Dose in Tissue EquivalentPhantoms using the DRP Secondary Standard and Digital Dosi-meters. AMPI. Med Phys. Bull.. 11(2). 81. 1986.

HO. Mittal. R.N. Das Sarma. K. Aravindakshan and P. Gangadharan."A Microprocessor Based Film Dosimeter Reader". AMPI Med.Phy. Bull 11 (3 and 4). 298. 1986.

A. Sankaran and A. Narayanan, "Compact Rugged Solid State FilmScanning Densitometer System for Radiation Field Analyser"ibid. 302, 1986.

V.H Risbud. G. Ramanathan and P. Gangadharan. "ScintillationMonitor with Fast Response for Monitoring around Diagnostic X-ray Installations" ibid, 306. 1986.

83

BARCANNUAL RKPORT

1986-87

M.R. Deokar, P. Jacob and P. Gangadharan "DRP Secondary StandardDosimeters-A Field Performance Evaluation", ibid. 310, !986.

A. Sankaran. V.S Patki and R.S. Gokarn "Patient Dose Measurementand Quality Assurance Tests in X-ray Diagnosis with a novel"diamantor" Chamber and Photodetector System", ibid, 320.1986.

T.N. Mahadevan. V. Meenakshy and U.C. Mishra. "Fluoride Cyclingin Nature through Precipitation", Atmos. Environ. 20, 9.1745.1986.

BY. Lalit. TV. Ramachandran and U.C. Mishra, "Natural RadiationEnvironment of Nasik and Neyveli Thermal Power Plants",Science of Total Environment, 52, 221, 1986.

U.C. Mishra and G.N. Shaikh, "Simultaneous Multi-element Deter-mination of Chewing and Snuff Tobacco used in India by INAA",Journ. Radio. Analy. & Nucl Chem. Articles 98 (2), 297, 1986.

U.C. Mishra, "Status of Air Monitoring Instruments Developments inIndia", Chem. Engg. World, XXI, 4, 65, 1986.

S. Sadasivan and U.C. Mishra. "Radioactive Fallout from Chernobyl",Nature 324, 23. 1986.

TV. Ramachandran. BY. Lalit and U.C. Mishra. "Measurement ofRadon and Thoron present in the Environment using NuclearTrack Etch Detector Technique", Nuclear Tracks and RadiationMeasurements. 11, (4-5), 245, 1986.

U.C. Mishra. G.N. Shaikh and S. Sadasivan. "Trace Elements inTobacco and Tobacco Smoke by X-ray Fluorescence Techniques"J. of Radio-analytical & Nuclear Chemistry-Articles 102, (1), 27,1986

BY Lalit, TV Ramachandran and U.C. Mishra, "Radiation Exposuresdue to Coal Fired Power Stations in India", Rad. ProtectionDosimetry. 15. 3, 197, 1986.

TV. Ramachandran, BY Lalit and U.C.Mishra. "Measurements ofRadon Levels in some Non-Uranium Mines in India using NuclearTract Etch Techniques". Buil. Rad Prot., 9 (1 and 2), 83. 1986.

U.C. Mishra. "Energy Dispersive X-ray Fluorescence for TraceElement Analysis in Environmental Samples". IANCAS Bulletin. 1(2), 14. 1986.

U.C. Mishra. "Auto Pollution" Science Today. 10. 1986.

P.V.N. Nair. P.V. Joshi and U.C. Mishra, "A New Method of Characte-risation of Condensation nuclei using an Expansion Counter",Aerosols-Formation and Reactivity. Pergamon Press, 859, 1986.

G.N. Shaikh. U.C Mishra and D. Krishnan. "Estimation of somecorrections in ALI and DAC for Indian conditions for UnsealedRadionuclides', Asian Regional Conference on Medical Physics.Bombay. 1986.

S. Sadasivan. B.S. Negi and U.C. Mishra. "EDXRF Analysis ofEnvironmental Samples-lntercomparison of results with otheranalysis methods and results of International Intercompanson ofFly-ash Samples", National Workshop on Engery Dispersive Xray Fluorescence Technique and their applications. Srinagar.1986.

S. Sadasivan. R.K. Verma and U.C. Mishra, "Source and Tubeexcited EDXRF system for Environmental and Geological Applications" abid.

B.S Negi, S. Sadasivan and U.C. Mishra. •Application of EDXRFAnalysisto air quality monitoring in India", ibid.

U.C. Mishra. S. Sadasivan and B.S. Negi. "Source Characterisation ofAerosis for a few cities In India by muln-variate analysis andEnergy Dispersive X-ray Fluorescence Technique". NationalSeminar on Environmental Pollution Control and Monitoring.CSICO. Chandigarh, 1986.

R.N. Khandekar. R.M. Tripathi. R. Ragunath and U.C. Mishra. "ToxicHeavy Metals in the Environment of Greater Bombay". NationalSeminar on Env. Pollution Control & Monitoring, Chandigarh.1986.

R.N. Khandekar. R. Ragunath and U.C. Mishra. "Dental Lead Levelsin Urban Indian Population". Science of Total Environment. 58.231. 1986.

J.P. Gupta and R.N. Sachdev, "Microwave Radiation Hazards andSafety Limits Adopted by Different Countries". Bull, of Rad Prot..9. 167. 1986.

T.V. Ramachandran. T.3. Muraleedharan and M.C. Subba Ramu."Some Preliminary Measurements of Working Level Concentrationof Radon in Dwellings in Bombay". Bull. Rad. Prot.. 9 (1 and 2).151. 1986

T.S. Muraleedharan, TV. Ramachandran and M.C. Subba Ramu. "AComputerised model for the calculation of activity to doseconversion factor for radon daughter inhalation in dwellings".BARC Report No 1317. 1986.

M.C. Subba Ramu. G.N. Shaikh. T.S Muraleedharan and TV.Ramachandran. "Present Status of Health Hazard EvaluationProblems associated with radon progeny inhalation'. 2ndSymp. on Deposition and Clearance. Salsburg. 1986

M.C. Subba Ramu and T.S. Muraleedharan. "Formation of aerosolsin Irradiated atmosphere". I Aerosol Sci, 17. 1986

TV. Ramachandran and M.C. Subba Ramu. "Control of radon and itsprogeny Concentration in Indoor Atmosphere". Bull. Rad. Prot..9. 4. 1986.

G.N. Shaikh, "Analysis of toxic and harmful elements by netronactivation and ingestion risks due to human habits of smokingand other tobacco uses". Ph.D. thesis. Gujarat University. 1986.

84

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1986-87

C Rangarajan. R Madhavan nnd S Gopalaknshnan. Spatialand Temporal Distribution of Lead-210 in the Surface Layers ofthe Atmosphere . I of Envt. Radioactivity. 3, 23. 1986

C Rangaraian. CD Eapen and S. Gopalaknshnan MeasuredValues of the Dry Deposition Velocities of Atmosphere AerosolsCarrying Natural and Fallout Radionuclides using Artificial collectors. ] Water. Air. an1 Soil Pollution. 27. 305. 1986

C D. Eapen and C. Rangarajan, "Radon Measurements in the SouthIndian Ocean during the Third Indian Antarctic Expedition of1983-84. Current Science. 55(9). 460 1986.

C. Rangarajan and CD. Eapen. "The Use oi Radon Gas as an index ofthe input of Continental air into the South West MonsoonCurrent". National Conference. Scientific Results of the FirstGARP Global Experiment. Miami. Florida. 1986.

T.N. Mahadevan. V. Meenakshy and U C. Mishra, "Trace Elements inPrecipitation over an industrial area of Bombay". Science of theTotal Environment, 48. 213. 198fi

G Swarup. I P Gupta. K K Rajan and R N Sachdev ' Infrared basedcarbon monoxide and methane monitors for environmentalhealth and safety". Bull Rad Prot. 9 21. 1986

A M Mohan Rao. G G 'Pandit and R Rajagopalan. Determination olbenzene and other aromatic hydrocarbons in atmosphere by gasChiomatoyraphy . he Nat.onal Seminar on EnvironmentalPollution Control and Monitoring. CSIO Chandigarh 1986

A J Netravalkar and A M. Mohan Rao. "Estimation of C. C. hydrocarbons in air by preconcentration on silica gel at dry icetemperature. Chromatographa. 22(1). 183 1986

AN. Singh. "Continuous Monitoring of Plutonium-in-Air". Eull ofRad. Prot.. 9,(4). 27. 1986.

Nalini Raja. PK Arora and J.P.S. Chatna. "Rate Constants of Ov (1AB)". Int. J Chem. Kinetics. 18. 505. 1986

85

9. ELECTRONICS ANDINSTRUMENTATION

BARC\ \ \ l U. Rf PORT

1986-87

9-1 Electronics

CAMAC instrumentation and a Camac-Crate Con-troller for IBM-PC confirming to international speci-fications have been developed. Electronic systems forreactor and process control personnel monitoringand radiation monitoring systems for NAPP andinstrumentation for Kamini reactor and the pelletronaccelerator have been developed and are under fabri-cation Failed fuel defection system based on delayedneutron monitoring has been commissioned at Dhruva.

A radioimmunoassay counter has been developedand fabricated for use in medical diagnosis and research.A multiprocessor i>ased 4K Data Acquisition and Pro-cessing system with enhanced system capability hasbeen designed. A linear array ultrasonic imagingsystem has been developed to view defects in metals.Based on field studies the design of a microprocessorbased impedance cardiograph has been finalised.

A coal/ash monitor for estimating coal and ashcontent was-fabricated and supplied to M/s. Coal IndiaLtd.

The telecryptor II, which was earlier made tofunction with electromechanical teleprinter, has beenupgraded to function with electronic teleprinter. Oneunit was installed at DAE secretariat, New Delhi

9-2 Instrumentation

Design, development and production of powersupply units, radiofrequency power generators, varioustypes of spectrometers, electronic instruments, crystals,detectors, night vision equipments and other devicesrequired for nuclear and laser programmes werecontinued.

Pneumatic Carrier Facility for Dhruva

A sequential process controller unit for controllingthe relevant parameters of the pneumatic carrier facilitywas developed and installed in Dhruva reactor. Thisfacility enables the samples to be inserted in the

radiation zone, get irradiated for the predeterminedtime interval and to eject out at the starting point m asequentially defined manner. The system has provisionto identify the location of the sample in case ol powerfailure. Manual controls are also provided for commi-ssioning and maintenance runs

Two 600 kW current regulated DC. power suppliesfor testing reactor components, a switch mode type 7 5kV 120 mA laser power supply, a 2kW 27 MHz radiofrequency power generator to couple to argon plasmatorch for analysis work and a microprocessor basedhot cathode ionisation gauge controller for processcontrol applications were designed, fabricated andsuccessfully tested. An ultraviolet photo-electron spec-trometer for binding energy determination of valenceelectrons of solid and gaseous samples has beendesigned and is being fabricated.

The YAG:Nd laser crystal puller was installed.The facilities for the characterisation of laser rodswere set up. A novel technique based on "thermocouplepulling' was developed for the growth of alkali halidecrystals Crystals of lead germanate. KDP and alkalihalide were grown and infrared detectors, secondharmonic generators and transmitting windows werefabricated for the laser programme. Surface barrierdetector fabrication was continued.

A mass spectrometer for isotopic analysis of solidnuclear materials with provisions for multiple sampleloading and automatic data acquisition was designedand is being fabricated. A Knudsen cell ion source foroperation upto 2500 K and meant to be used with amass spectrometer for measuring high temperaturethermodynamic properties of nuclear materials hasbeen fabricated. A general purpose double focussinghigh resolution mass spectrometer with many specialtechnical features has been designed. The UHV massspectrometer for geochronological applications lorNational Atomic Energy Agency, Indonesia was fabri-cated and tested and is ready for shipment. A rockargon extraction system for the above machine wasalso desinged. Two mass spectrometers for heavywater analysis were fabricated and commissioned at

86

BARCA\M M KKPOK'I

1986-87

I Thal-Vaishet Heavy Water Plant and three mass spec-trometers were also supplied for leak detection.

Special high capacity sorption pumps and highvaccum valves were developed for critical applicationsinvolving ultra high vaccum, radiation and high tempe-rature. An ultra high vaccum furnace for degassingvaccum materials at 1000°C and 10 9 torr pressurewas designed and is being fabricated. A third unit formonitoring hydrogen concentration in sodium in FBTRwas supplied. A turbomolecular pumped vaccum micro-balance for material analysis was commissioned.

An organic quenched Geiger Muller tube withsilver cathode for neutron burst counting was success-fully developed. Xenon flash lamps for lasers, glass tometal seals for canned motors and level sensors forHeavy Water Projects, hollow cathode lamps for spec-troscopic analysis and pocket dosimeters for radiationmonitoring were routinely produced.

The development of 100 microfarad 5 kV DCcastor oil impregnated energy storage capacitors forlasers and fusion programmes was completed. Tensuch capacitors were fabricated and delivered to theusers.

9-3 Computer Based Instrumentation

Optical encoders for spectrometers and diffracto-meters for use in Dhruva were developed. 60 pieces ofencoders of 100 counts/rotation sensitivity have beenalready delivered. New encoders of sensitivity 500counts per rotation are under development. A prototypeof full height turnstile gate has been developed for theaccess control in DAE establishments.

Details of an image analysis system based on IBM-PC/XT were finalised. Hardware for video camerainterface, frame grabbing and image display operationswas designed, and software was developed for featurespecific measurements.

A microprocessor based input/output controllerfor monitoring and control of magazine and fuel pinmovements was developed, tested and installed for

passive gamma scanning of MOX fuel pins at Tarapurplant Automated scanning of 10 fuel pins was earnedout after mechanical alignments were made perfect

Another microprocessor based system was deve-loped for weld quality assurance. A provision hasbeen made for monitoring current, voltage and electrodeforce during welding. These values are compared withallowable tolerances for weld qualification duringproduction. The system was installed at NFC, Hyderabad.

Phonetic Coding Project

For uniquely identifying every citizen of the country,a compact and selfchecking erson-number formulawas evolved. It is based on u.e concept of phoneticnumbers with 128 as base. The basic numerals arecomposed of 16 soft consonants and 8 unambiguousvowels common to all the Indian languages. They areeasily workable through any Indian language. Phoneticnumbers are short in respect of digits and sound, andare easily memorizable possessing high informationdensity. Being basically an extension of binary, theyeasily fit into computer logic.

Pressure, Tube Gauging Equipment

A microprocessor based controller for gaugingequipment was designed and fabricated. This enablespositioning of Linear Variable Differential Transformers(LVDT) along the length of gauging tube and atvarious angles of diameter using stepper motors. TheLVDT data give values of diameters and sag along thelength of the tube.

9-4 Process Instrumentation

Facilities for fabrication, calibration and testing ofvarious process instruments, systems and other equip-ments required for power and research reactors wereestablished. A centralised process instrumentation unitand an electrical test laboratory having state of the arttest facilities were made operational. Precise calibra-tion and testing of instruments can be carried out inthe pressure range of 1 to 1200 bar, 0-400°C tempera-

87

BARCANV AI. RKPOKT

1986-87

ture, to be extended to 1100°C, 0-1500 lpm of water evaluation of strap on surface type RTD's required forflow, to be extended to 4500 lpm, and a pH range of 235 and 500 MW(e) nuclear reactors were installed.0-14. Process instruments and equipment for various Instrumentation for Dhruva under LOCA. and test setunits of DAE are being designed/modified and fabri- ups for NAPP secondary shut off system and emer-cated and tested on a regular basis. Test set up for gency core cooling system were commissioned

88

Publications

BARCt \ \ ( y. RI.POKi

1986-87

G D hiul.i] Impedance- piethysmoyraphy tor screening vasr-iilardisorders Guest Ucliton.il Journal ot post graduate medicine.32 ! 1986

S.ulhana R .Snr.in>K.ii CD Jindal MD Kelk.ir JP H...bu SODowoolkai and G B Parulkar. On line impedance plethyamegiaphy loi the diagnosis ol deep vemthrombesis Progress inAruiioloity (Mirmrva Medici) 5 1986

Smif.i I) Ocwoolk.il MO Kelk.ir JP B.ibu GD Jinrlal S.idhana BSui.iokar and G B Parulkai Nonmvasive assessment c! distalarteraml mn off using impedance plethyamography". Progressin Angiology (Minerva Medica). pp 39 43. 1986

G D Jindal. S B Suraekar. J P Babn J B Dharan!. M.D. Kelkar andG B Parulkar. "Assessment of pulmonary hypertension in patientswith nitra! stenosis using vector impedance cardiography".Progress in Angiology (Minerva Medica). 83. 1986.

P P Vaidya. K R Gopalakrishnan. V.A. Pelhe and T Anjaneyulu. ' ANew Method for Reducing DNL in Nuclear ADCs using anInterpolation Technique". Nuclear Instruments and Methods inPhysics Research A 250. 1986

V K J/i.id.m .Hid H li Kei-ie I ' r e q j t n c y ')<iin;ui\ I ' l l i^nno ol N.i'-ifctii

S;i"cii.>i li;:i.t N u d e a r liisliumen'..-; a;io F/ieihods jn P.1 y^i'-s

H.-.se;,rc): A .'A'i 1986

Dclj . ishislJ . j i j . int i i iH Bain Pawn s:ij.i|jjies o! Ins i iumcnia t i ' i.ai'.d

Cv-ntrai Svs ie ! i r of D h i u v a Res td icJ i R e . i d o i IAEA rj.j'.i<M!

J'D',V(-J Piaii! Cuiitioi .iiid Jns t r J iner . t juon bjjfcciaiisib m( jeiinu

W:iH-nl!!!C|cii S'.-.'it/eiland St-pl 1986

li R B.iiii .m<! Df;|j.:slns U.ii-. Ainomatjc Powei Cc-ntiai Sy.^kih ul

DJiniv.i Nucle.ir R c i c i o r S y m p o s i u m m Aulomaiioii j j id lTi-itu

meiilaliDii fni jiowc-i p lants 1J AC Bang;sloTr- (IFAC journal

AUTOMATJCA) Dec 1986

RK Nig.'im Security Hazaids anci Role o) Gadgets in SecuritySystems Semiiiai cii Scien'jiir: Gadgets in security functiorungDeifil Marc}) 198?

D N Snvastava. Xvoiution oi the concept oi Phonetic Numbers ar.dthen Relevance m the Indian Context . ' Nalional Seminar CumWorkshop on Digitai Phonetics Unr.'ersal Djgilaj CommunicationResearch Centre New Delhi March 1967

V K Chadda ct ai Image Processing Techniques ior quantitativeMctalJociraphy Workshop Image Processing In AstronomyOoty. Radio Astronomy March 1987

89

10. ENGINEERING ANDGENERAL SERVICES

BARCANNl'AL REPORT

1986-87

10-1 Civil Engineering

Civil Engineering Group undertakes the responsi-bility for the planning, design and construction of allthe buildings and associated infrastructure requiredfor the activities of this Research Centre at Trombay,Vashi, Tarapur, Srinagar and Gauribidanur. Duringthis year schemes totalling Rs. 359-50 lakhs werecompleted at Trombay and Vashi. These include labo-ratories for Labelled Compounds and Reactor ControlSystems, office facilities for 500 MWe PHWR group, DP& S and TSD, workshop facilities for TSD, TransportSection and a road from Gamma Field to Trombayvillage etc. Civil works for the Waste ImmobilisationProject, workshops of Reactor Control Systems and alaboratory for Labelled Compounds and allied facilitiesaltogether totalling Rs. 1349 lakhs are at variousstages of implementation. During this year new workstotalling Rs. 1110 lakhs for a helipad and FRD guardhouse were taken up. The schemes under planningare expected to cost Rs. 186-80 lakhs. This includeslaboratories, electron accelerator building for ISOMED,glass house for biological studies and residentialfacilities for medical officers. An amount of Rs. 72lakhs was spent for the maintenance of various facilitiesat Bombay.

In Tarapur construction of the 6th and 7th sets ofRCC trenches for radioactive waste management, boun-dary walls for SWMF, construction of residential quar-ters etc. at a total cost of Rs. 190-30 lakhs is underprogress. Plans for the hospital, School Complex andStaff Recreation Centre were finalised. New buildingsare proposed to augment the present facilities of NRLat Srinagar.

Architectural Section continued to render archi-tectural services in designing buildings for BARC, NPBand for other units under DAE including aided institu-tions like TIFR. SINP, etc.

Architectural services were provided to otherdepartments and outside agencies which included theDepartment of Electronics (Society for Applied Micro-wave Electronic Engineering and Research), Depart-

ment of Science and Technology (National Institute ofImmunology) and Institute of Hotel Management, Cate-ring Technology & Applied Nutrition, Bombay.

10-2 Electrical and Mechanical Services

Operation and maintenance work of all the elec-trical installations, air conditioning plants, ventilationsystems, pneumatic controls, hydraulic and vaccumsystems, cranes and water supply facilities, etc. wascarried out. Electrical and mechanical services fornine projects at Trombay, Tarapur and Srinagar werecompleted and commissioned. Four major projects atTrombay, Tarapur and Vashi are at various stages ofimplementation.

10-3 Central Workshops

Centra] Workshops laid greater emphasis on deve-lopment of new techniques and processes and venturedon new designs for development of equipments for R &D work for the Department during the year. A lowpressure casting method for getting premium sandcastings in high yield aluminium alloys was deve-loped. This technique has been adapted for nucleargrade components for Cirus reactor for age hardenableAl-4-5% Cu and was used in conjunction with invest-ment casting method for spacers in large quantities forDhruva reactor. Prototypes have been made andsuccessfully proven by the development of diffusionbonding process for seal discs for PHWRs. Preliminarywork has been completed for adapting the explosioncladding technique for manufacture of heat exchangersfor nuclear duty. Manufacturing a full charge of 70 nos.of catalyst tubes, involving Inconel-600 and Inconel- 800H was undertaken. A unique Neutron Radiography righas been designed and manufactured for IGCAR. Awork handling unit for RMP for high precision weldingby electron beam (EB) process has been designedand fabricated indigenously. Another heavy duty unitfor general purpose was also designed and manufac-tured for developing various EB techniques for inhouseuse. Developing of different types of goneometerswere also undertaken.

90

BARCANM'AL RKPORT

1986-87

I Design and development of several other equip-ments for various purposes are under progress. Thisincludes a 5 MeV Medical Cyclotron, Air Cushionbased Spectrometer, different types of Scattering Cham-bers, Centrifigual Extraction Bank, and a 5 k J casterbluemlein pulse generator.

Mechanical and fabrication services and expertisewere provided to various constituent units of DAE.Some of the major works completed are Degas HeatExchangers, In Core Flux Mapping Assemblies, FilterVessels, Components for Secondary Shut Down Systems,End Fittings and Linear Tubes for KAPP-II, Fuel ClusterAssembly Components for Dhruva and Spherical SectorAnalyser and Electrolytic Cell in monel, developmentof radiation frequency resonator, precision ScanningStage Assemblies for Fuel Scanning, Precision Cham-bers for Hadron Calorimeters. The transport maintena-nance unit continued the maintenance of all vehiclesin BARC. The Centralised transport project has beencompleted.

10-4 Remote Handling and Robotics

For the proposed 'Nuclear Robot Project' workhas been started on several fronts. A servo robotdriven by AC servo motors capable of lifting morethan 5 kg is nearing completion. Controlled by acomputer, it will be suitable for use in hot cells fordismantling and reconstitution of irradiated fuel fromFast Reactors. The walking mechanism of a mobile, sixlegged walking robot is currently being assembledand will be ready for evaluation of the configuration inearly 1987. Each leg will be controlled by a micropro-cessor which in turn is controlled by another 16 bitcomputer. It will perform diverse tasks in nuclearinstallations and could be controlled by wireless meansby high level commands. It is expected to substituteman in highly radioactive areas. The robot need onlylittle maintenance and will have long life. For handlingPlutonium based fuel in PREFRE expansion projectsdevelopment and production of small robots wastaken up Conveyors and other requirements are also

being developed. Prototypes are expected to roll outshqrtiy.

A pneumatic pick and place robot has been deve-loped and installed at NFC, Hyderabad,as part of theprogramme for automating the oxide fuel fabricationplants. An automated radioisotope capsule assemblysystem of the pick and place type has been conceived,designed, constructed and installed in the Hot Cells ofRadiation Technology Division. The system can assem-ble and weld sources of different strengths automati-cally and remotely. A prototype scale model of remo-tised drum closing and sealing for use at WasteManagement cell at NAPP was designed, fabricatedand has been tested successfully. A servo manipulatorsuitable for operation in Hot cells without windows,using TV viewing is under development. This willresult in substantial savings in foreign exchange.First Power Manipulators indeg i nously manufacturedbased on know how transferred from BARC'andhaving capacity of handling 50 kgs. will be availablefor use in early 1987.

Design, development, fabrication and also procure-ment of several specialised and remote handling equip-ments for various units of DAE has been undertaken.Some of items are : Remote pipe cutting and weldingequipment. Remote ultrasonic inspection for piping,Precision ultrasonic probe manipulator, Macrograph,Remote diameter measuring light.

10-5 Technical Information

BARC Library has now nearly 760,000 publicationsconsisting of about 79,000 books, 57,000 bound volumesof periodicals. 19,920 patents and standards andabout 640,000 technical reports. Library regularlyreceives more than 1800 scientific and technical journalspublished from India and abroad. Most of the activitiesof the library are now computerised making full use ofthe PRIME 450 computer installed in the premises.Circulation of books is computerised. A catalogue ofthe technical reports is being prepared on the computerfor easy retrieval of information.

91

BARCANNl'AL REPORT

1986-87

India continued the participation in InternationalNuclear Information System (IMS) of IAEA and all therelevant titles publised in India were added to INISdata base. Computer based facilities are now availablefor scientists in the organisation for dissemination ofbibliographic information as per the requirementsfrom INIS output tape received from IAEA. Necessarysoftware for this purpose was indigenously deve-loped In cde r to train the DAE scientists andengineers on the use of the INIS data base availableonline on the ND computer, two training programmeswere conducted. Library maintained its position as thebiggest library in Asia in the matter of nuclear energyand related fields.

During this year a number of technical and scientificreports, brochures and other publications pertainingto the activities of BARC were brought out The BARChighlights were also published for the first time Amachine readable to the catalogue of the availablebooks is being created

10-6 Translation

Translations ot technical reports and scientificarticles were done fro-i French. German. Italian.Japanese and Russian languages at the request ofscientists and engineers of BARC and other constituentunits of DAE Copies of the translations were depositedin the National Science Library. New Delhi, for theNational Data Bank of Translations. Interpretation ser-vice in foreign languages was also provided on manyoccasions.

10-7 Landscaping

Landscaping was done on about 18,000 m' area inTrombay & Anushaktinagar. Rejuvenation of about3000 m2 garden in Trombay was also carried out.About 250,000 saplings of various types were plantedand about 50 kg seeds of different types of trees weresown on Trombay Hills for afforestation purposes. Alarge number of trees and shrubs were planted at theCentre for Advanced Technology and the surrounding

hills at Indore. Landscape plans for various units ofDAE were prepared.

10-8 Contributory Health Service Scheme

The scheme at present covers 62,620 beneficiaries.BARC Hospital and zonal dispensaries continued toextend diagnostic and therapeutic facilities to thebeneficiaries. About four and a half lakh patientsavailed the CHSS facilities.

In addition to a total of 23 beds in special areas likeLabour Room, Casualty. Pre-and Post operative rooms,the bed strength in the BARC Hospital is now 169.

Active family welfare programme was carried outduring the period of report. More than 200 MedicalTermination of Pregnancy (MTP) cases and more than200 permanent sterilizations were carried out. Theinfants addition to the Scheme was around 850 andannual birth rate is 13 46 per thousand The SocialService Section continued to render assistance to thebeneficiaries

10-9 Radiation Medicine Service

Clinical sei vices extended to the patients attendingthe Centre included a variety of in vivo imaging andnon imaging investigations like static and dynamicscintrigraphy. nuclear haematology. radionuclide the-rapy and in vitro diagnostic tests such as radioimmu-noassay (RIA) of thyroid related hormones, humangrowth hormone, serum thyroglobulin estimations anddetection of the presence of tubercular antigen andantibodies A total of 5.780 new patients attended theCentre and more than 22.000 investigations werecarried out during the year.

The newly acquired Single Photon Emission Tomo-graphic Camera (SPECT) has become fully operational.Nuclear cardiology investigations including Tellurium-201 myocardial imaging and both left ventricular andglobal cardiac ejection fraction studies were continued.

Hypothyroidisrn was found to be due to congentialdefects in thyroid in children under two years of age.

92

BARCANNUAL REPORT

1986-87

In 50% of the children in Hepatobillary imaging study medullary carcinoma of thyroid. During the year, 2730was found useful in differentiating between biliary new patients were referred for various thyroid inves-atresia and neonatal hepatitis in infants. tigations. One hundred and one (101) patients of

hyperthyroidism and one hundred and seventy-fiveScinti-scanning has proved to be quite sensitive (175) patients of thyroid cancer were treated with

in picking up overt and occult metastasis arising from radioiodine.

93

Publications

BARCANNUAL REPORT

1986-87

S. Challappa, R.S. Koppikar and B.N. Lahiri, "High Conductivity ofmaterial welding-some innovative facets", IIW-National WeldingConference. 1986.

J Krishnan and GP Reddy. "Joining of Reactive Metals", IIW(Bombay Branch), Annual Welding Seminar, Bombay, Feb. 1987

J. Krishnan. G.P. Reddy. S.K. Salwan and S. Challappa. "ExplosionWelding of Titanium to Steel: Some observations, InternationalWelding Conference. New Delhi. Jan. 1987.

G.R. Kamat, A. Manjunatha and S. Challappa, "Quality Assurancethrough Machine Tools Calibration", Symp on Quality Assurancefor Safety and Reliability of Nuclear Power Plants. Bombay.March 1987.

G.S.K. Murthy and N. Devarajan, "Expansion Mechanisms for Indi-genously developed honing machines". Symp. on IndigenousNuclear Equipment. BARC. Bombay. Feb. 1987.

D Vijaykumar. N. Devarajan and S. Challappa. "Design and fabrica-tion of Electron beam welding equipment", ibid.

K.S. Bhat, R.B. Mulay and B.V. Lahiri. "Formulating Welding Proceduresfor pipe to dissimilar metal but joint for a nuclear filter vesselassembly", ibid.

R.K. Choudhary. S.R.S Murthy, G.S.K. Murthy, M Jayendranath and1. Venkatappiah. "A large area ionisation chamber for nuclearreactions studies using heavy ion beams", ibid.

B.C. Pal. N.R. Wadhwa and S.H. Goveas. "Development of triple axisneutron spectrometer1, ibid.

N.V. Ramaswamy and R.L. Suthar, "Remote operated decladdingmachine for reactor maintenance". Symp. on Indigenous NuclearEquipment. BARC. Bombay, Feb. 1987.

S.K. Sinha and K. Mahajan, "Indigenous development of neutronradiography rig", ibid.

A. Mohan Rao. R.L. Suthar and C.P. Mahajan. "Manufacture of spentfuel chopper", ibid.

M.D.P. Gupta and C.P. Mahajan. "Manufacture of evaporator moduiesfor a multi-stage flash desalination pilot plant", ibid.

S. Challappa and S. Guha. "Indigenous robotics technology innuclear industries", ibid.

M.R. Balakrishnan, "Modern Technological Developments in infor-mation Storage and Retrieval and the need to include them inLibrary Science Curriculum", National Seminar on Library andInformation Science in India, New Perspectives, Trivandrum,December 1986 & Alis Bulletin

M.R. Balakrishnan, "International Nuclear Information System".NISSAT Newsletter. 6(1) 15. 1987

94

11. TECHNOLOGY TRANSFER

BARCANNUAL REPORT

1986-87

Although the major technologies developed atTrombay in the field of electronics, nuclear fuel fabri-cation and production of special materials are trans-ferred to the Electronics Corporation of India Ltd. andthe Nuclear Fuel Complex, there are a number ofrelatively small processes where special expertiseand technologies which emerged from the R&D workcarried out in BARC have importance in a widercontext. With a view to making these technologiesavailable for large scale exploitation for the benefit ofthe nation, without overburdening the facilities andinfrastructure available at Trombay, a TechnologyTransfer Group was constituted. This Group is entrustedwith the responsibility of identifying processes andmethods developed by the R&D community at Trombaywhich can be transferred to private or public sectorundertakings for commercial scale operation. TheTechnology Transfer Group so far has identified a totalnumber of 75 technologies which are suitable fortransfer to outside agencies. Out of these, twenty sixtechnologies have already been transferred, 19 tech-nologies have been processed and brought to a stagewhere they can be transferred in the immediate future,and thirty technologies are being evaluated by specia-lised groups in order to facilitate commercial produc-tion. An amount of Rs. 10-4 lakhs has been received as

transfer fees from these technology transfers duringthe year.

During this year fifteen technologies were trans-ferred. These are : (i) production of Bilirubin Stripsdeveloped by Chemistry Division and transferred toM/s. Water-Chem Laboratories, Hyderabad, (ii) Fabri-cation of Gamma Radiography Equipment developedby Radiation Technology Division to M/s. BhabhaRadiation Engg. Co., Baroda, (iii) X-ray Generator Sta-blised Power Supply System developed by the VariableEnergy Cyclotron Centre, Calcutta to M/s. Radon HousePvt. Ltd., Calcutta, (iv) Production of Elemental Phos-phorus developed by Desalination Division to M/s. UPState Mineral Development Corpn., Lucknow, and M/s.Dalai Consultants and Engineers (Pvt) Ltd., Bombay,(v) Gamma Switch developed by Electronics Divisionto M/s. Comtek, Pune, (vi) Reverse Osmosis WaterDesalination Plant developed by Desalination Divisionto five firms including M/s. RCF Ltd., Bombay, and(vii) Production of Boron Carbide developed by Meta-llurgy Division to M/s. Boron Carbide (India) Pvt. Ltd.,Bombay. The technology developed by Division ofRadiological Protection for the following eight airpollution systems were transferred to M/s. RajasthanElectronics and Instrumentation Ltd., Jaipur.

95

12. HUMAN RESOURCESDEVELOPMENT

BARCANNUAL REPORT

1986-87

Two hundred and forty three trainees belongingto different disciplines successfully completed the29th Course and were absorbed in the various units ofDAE in August 1986. Currently 197 trainees joined the30th Course and are undergoing training. In plantscheme was extended to cover 0 & M manpowerneeds of the Fast Reactor Programme at IGCAR. Theexisting curricula were suitably restructured to inductand enlarge specific areas of interest like Fusion,Accelerators, Computers etc. Experiments in Mir cop-rocessor Development System were started this yearfor Electronics trainees. BARC continued to assist DRDOn organising their Electronics Fellowship Training

Programme. Poona, Bombay and SNDT universitieswere also assisted in their academic programme.

IAEA and BARC jointly organised a four weekcourse from March 31 to April 25,1986 on preparationof nuclear data for use in reactor calculations. Of the39 delegates who participated in the Conference, 26 werefrom foreign countries including Algeria, Argentina,Brazil, China, Egypt, Indonesia, Iraq, Peoples DemocraticRepublic of Korea, Libya, Malaysia, Mexico, Poland,Romania, Thailand, Vietnam and Yugoslavia. On June4, 1986 an IAEA Research Coordination Meeting onNuclear Techniques for Toxic Elements in Foodstuffswas held under the auspicies of BARC and Division ofLife Sciences of IAEA. A two week training programmeon CNC Machines was conducted in BARC in May1986 for the benefit of shop supervisors and engineers.

A six week course on Radioimmunoassay and itsClinical Applications was held in this Centre fromSeptember 29,1986. This IAEA-RCA sponsored coursewas attended by about 200 delegates including sixteenfrom the RCA countries-China, Korea, Vietnam, Malaysia,Bangladesh, Thailand, Srilanka, Indonesia and Phillipines.Training demostration on uses of Tracer Technologyin Industry sponsored by UNDP-IAEA-RCA was heldin this centre from Nov. 10-12,1986. A large number of

delegates from abroad specially from RCA countriesattended the conference which dealt with use ofradioisotopes in industry, medicine, hydrology andagriculture. A five day IAEA coordinated meeting forIndian and foreign delegates was held from November24,1986 which dealt with the fuel element cladding inter-action with water. The First Asian Regional Conferenceon Medical Physics was held in BARC during December8-12,1986. About 400 delegates from various countriesof the world attended the conference which dealtwith applications of physics in medicine.

Two meeting of IAEA consultants were held on'Radioaerosol inhalation imaging for diagnosis of res-piratory diseases in developing countries' and on'Immunodiagnosis of tuberculosis'.

The 14th batch of trainees in the one year full tonetraining in Nuclear Medicine leading to Diploma inRadiation Medicine (DRM) and Diploma in MedicalRadioisotope Techniques (DMRIT) of the University ofBombay consisted of 9 doctors and 9 science graduates.

During the year a total of 220 scientists wentabroad for the purpose of attending seminars, meetings,higher studies and as IAEA experts. The collaborationschemes with'IITs and University of Bombay in thefield of higher studies were continued. This centrehave so far been recognised for post-graduate studiesby 30 universities of India. Three lecturers are carry-ing out research here under the UGC Faculty Improve-ment Programme. Under IAEA technical assistanceprogramme and in terms of India's objectives for thepeaceful use of atomic energy seven scientists fromVietnam and one each from Bangladesh, Sudan, Ghana,Malaysia and Syria were given training in the fields ofnuclear energy in the Centre. Two scientists fromIndonesia were trained in mass spectrometry withspecial emphasis on geochronology.

96

13. CENTRE FOR ADVANCEDTECHNOLOGY, INDORE

BARCANNUAL REPORT

1986-87

Accelerator Programme

D.C. accelerators capable of giving 500 keV tol-5MeV energy and electron beam current of 80 mAhave been designed for industrial applications. Twovarieties of machines, viz. rectifier type and singlecavity linear accelerator type, were designed.

Design was completed for microwave cavities tobe used for a 10 MeV linear accelerator to be used asan injector to Synchrotrons. Material procurement hasbeen initiated for the Synchrotron Radiation Sourceand the Booster Synchrotron. About 50 scientists arenow engaged in the design of these machines.

Laser Programme

The laser activities at the Centre for AdvancedTechnology, Indore started with shifting of three groupsin May 1986. In a brief spell of six months the laborato-ries were set up and scientific activities were started.Three copper vapour lasers with average powers in

the range of 10 to 20 watts were made operational. Acopper vapour laser designed to give average powerin excess of 20 watts was designed, fabricated andassembled. This laser has given 12 watts output in itsstart up runs.

Infrastructure

The construction of two laboratory buildings(costing Rs. 65 00 lakhs) and the 2nd MultipurposeShed (costing Rs. 2600 lakhs) has been completedand both are in occupation by the users. Theconstruction of Hostel-cum-Efficiency Apartments(costing Rs. 85 00 lakhs) and 3rd Multipurpose Shedare in progress. Construction of sub-station for insta-llation of 500 kVA transformer has been completed. Thepreliminary drawings for construction of Laser Labo-ratory are under preparation. Construction of 90 resi-dential quarters, water tower and underground tankshas been completed. The renovation of SukhniwasPalace has also been completed. Part of the shoppingcentre complex has been constructed.

97

Published by Library 6f Information ServicesBhabha Atomic Research Centre, Trombay, Bombay-400 085.

Printed at : SUDARSHAN ART PRlnTIMQ PRESS BOMBAY-400 0 3 1 .