Informs that verifying info exists to show that plant 6-inch silicone ...

20
.,.. Public Service Electric and Gas Company P.O. Box 236 Hancocks Bridge, NJ 08038 609 339-4800 Corbin A. McNeill Jr. Vice President - Nuclear April 26, 1985 Director of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, D.C. 20555 Attention: Mr. Steven A. Varga, Chief Operating Reactors Branch No. 1 Division of Licensing Gentlemen: ALLEGATION - FIRE BARRIER PENETRATION SEALS SALEM GENERATING STATION UNIT NO. 1 DOCKET NO. 50-272 We are in receipt of your letter of February 27, 1985, which transmitted an allegation that PSE&G lacks verifying information to show that the plant's 6-inch silicone foam fire barrier penetration seals have an adequate fire rating. We have reviewed our documentation related to silicone foam fire barrier penetration seals. Our documentation verifies that this material has been tested in accordance with ASTM-E-119-73 and that a minimum of 6 inches of seal material provides a 3-hour barrier (reference attached test reports). We have also reviewed our fire hazards analysis and have verified that the fire loading in all designated fire areas does not exceed the barrier limits. The safety evaluation related to amendment 21 to the Facility Operating license, titled Fire Protection Review, dated November 20, 1979, concluded that all documentation and information supplied by PSE&G demonstrated that the seals provided a fire rating equivalent to that of the fire barrier. A copy of this safety evaluation is also attached.

Transcript of Informs that verifying info exists to show that plant 6-inch silicone ...

.,..

Public Service Electric and Gas Company P.O. Box 236 Hancocks Bridge, NJ 08038 609 339-4800

Corbin A. McNeill Jr. Vice President - Nuclear

April 26, 1985

Director of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, D.C. 20555

Attention: Mr. Steven A. Varga, Chief Operating Reactors Branch No. 1 Division of Licensing

Gentlemen:

ALLEGATION - FIRE BARRIER PENETRATION SEALS SALEM GENERATING STATION UNIT NO. 1 DOCKET NO. 50-272

We are in receipt of your letter of February 27, 1985, which transmitted an allegation that PSE&G lacks verifying information to show that the plant's 6-inch silicone foam fire barrier penetration seals have an adequate fire rating.

We have reviewed our documentation related to silicone foam fire barrier penetration seals. Our documentation verifies that this material has been tested in accordance with ASTM-E-119-73 and that a minimum of 6 inches of seal material provides a 3-hour barrier (reference attached test reports). We have also reviewed our fire hazards analysis and have verified that the fire loading in all designated fire areas does not exceed the barrier limits.

The safety evaluation related to amendment 21 to the Facility Operating license, titled Fire Protection Review, dated November 20, 1979, concluded that all documentation and information supplied by PSE&G demonstrated that the seals provided a fire rating equivalent to that of the fire barrier. A copy of this safety evaluation is also attached.

Mr. Steven A. Varga -2- 4/26/85

Based on our review, we have concluded that verifying information exists to show that the penetration seals have an adequate fire rating and that the allegation is, therefore, unfounded.

Attachments

C Mr. Donald C. Fischer Licensing Project Manager

Mr. Torn Kenny Sr. Resident Inspector

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•. •

SAFETY EVALUATION BY THE OFFJCE OF NUC!..EAA REACTO?. REGUL.1-.Tim;

RELATED TO AM:ND~NT NO. 21 TO FACILITY O?~R/..TJHG ucn;~: NC). DP?.-7C

- -·-·

PUBLIC SERVIC£ ELECTRIC Arm Gti.S COM?Atfi' PHIL.A.0ELPH1/.. ELECTRIC COMPANY,

DELMARVA PO~ER AND LlGHT COM?ANY, AND ATLANTIC ClTY EL~CTRIC CO/'PANY

SALEM NUCLEAR GEN~RATING STATION, UNIT NO.

DOCKET NO. 50-272

FIRE PROTECTION REVJI~

''· • •

L IITTOOUCT!ON

SALE~ NUCLEA~ GENERATHIG ST~i!ON SAFEiY E\f ALUAT!ON RE?ORT FIRE ?ROTECT!ON RE'/IrA

UNIT NOS: 1 ANQ 2

iABLE. OF CONi:'.i'liS.

II. FIRE: PROTECTION SYSTEMS OESCRIPiION ANO EVALUATION

A •. Water Supply Systems s:. Automatic Sprinkler and Manual Wa'!=er Systems C. Gas Suppression· Systems O. Foam Suppression Systa~ E. Fire Detection Systems

II I. OTHER ITEJIS RELATING TO THE STATION FIRE PROTECT!ON PROGAA"!

A. Fire -aarri ers B. Fire Coors and Campers C. Penetration Fire Steps 0. Cc:ar.1unieation Systems E. Reactor Coolant Prassure Boundary Integrity

!V. . FIRE ?ROT!CTION FOR SPECIFIC AREAS

V. ACMINISTAATIVE CONTROLS ANO FIRE: BRIGACE

VI. TECHNICAL SPECrFICATIONS

VIL CONCLL!S I CllS

.. • J

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C. ?enetration ~fr! Stoos

Penetrations,. including electrical penetration. saals, t:irougi"l r.ated

barriers are sealed to provide fire resistance !':!:Jiva1ent !o :lie ....

barrier itself. The- licensee has provided t.'ie· necassar:t ir.fo~ation

to demonstrate that the penetration seals used 'in the penetrations

for c:able trays, conduits, and piping and their method of installation

can provide a fi:-e rat.ing equivalent to the fire: barrier.

We c.onc.1 ude· that the fire "barriers, barrier Penetrations, firs do.ors

and dampers ·with the addi tiona 1 doors and dampers to be i nsta 11 ed

meet the guidelines of Appendix A to Technical Position Asa 9.5-1

and•are, therefore, acceptable.

a·. Comnunication S·1stems

Fixed emergency coir:munication using voice-powered head sets is available

at specific locations t.'iroughout the station. There fs also a: public

address system on each unit which ·is powered by an inverter nor.:ially

fed from the 230 volt alternating cul"'rent vital bus C. and bac!<ed up

by the 125 volt direct current emergency bus C. To satis_7y th_e guide-.

lines of AppenQix Ate 9TP Asa 9.S-i ,·the lic!nsee has cormiitted, at

our request, to provide an· additional ccmnunic.ation system consisting of

portable radio units. To preclude a single electrical failure .. from

causing the loss of: all communication systs.rns, the licensee h~s docu-

mented that the fixed l"'e~eater and other accessories associated with

the ~ol"'t.abie radio c:rrniurlication syster.i of eac;., unit wi11 be power~-:

from a differe~t 125 vol: direct curr~nt emergency ~us as that of the

pu~1i~ address system fo~ that u~it.

... .. .

..

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Environmental Consideration

We have determined that the amendment does not authorize a change in effluent types or total amounts nor an increase in power level and 'Hill not· result in any significant environmental impact. Having made this determination, we· have further concluded that the amendment involves. an. action which is insignificant from the standpoint of environmental impact and, pursuant to 10 CFR S51.S(d)(4), that an environmental impact statement or negat.ive- declara.tion and environmental impact appraisal need not be prepar,ed in connection w.ith the issuance of this amendment.

Conclusions

We. have found that the Fire Protection Program for the Sal em Nuclear Generating Station with the improvements already made by the licensee, is adequate at the present time and, with scheduled modifications, will meet· the guidelines contained in Appendix A to Branch Technical Position ASS 9.5-1 and meets the General Design Criterion 3 and is, therefore acceptable.

We have concluded, based on· the considerations discussed above, that: (1) because the amendment does. not involve a significant increase in the probabiltty or consequences of accidents previously considered and does not involve a significant hazards consideration, (2) t~el'"e is reasonable assurance that· the health and· safety of th~ pub1icwill· not be endangered by opera.tion in the. proposed manner, and (3) such activities. will be co.nducted in compliance with the Corrrnission 1 s regu­lations and the issuance of this amendment will not be inim·ical to the common defense and security or to the health and safety of the public.

Date: November- 20, 1979

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____________ ......_ __ , _________________ _ A DIVlSION CF PRODUCTS R:'.SrJ..2CH &. CHEM:CAL ccr:?·J~A71m~

G~'"ERA.L

FIRE 'rEST on.

SEMCO PR-855 ?.'::'V SILI::c:~ FO.? .. M S E..;.r....:. ...... ~ T I!r CONCRE73 ~OOR.

JUNE 2s, ls

Page 1 of

This ·report describes a..'"ld su."!!..-narizes t.'1e ·r-e·~..:l ts of a fire test cond·.ic.ted on a concrete slal::> floor on Ju..""le 28, l9i6 at t.."le SEMCO Fire Tes~ .Facility located in Glendale, Califor:iia •.

The purpose of· t..11.is test was to determine the effectiveness 'of PR-855 RTV Silico~e Fo~~ as .a fire stop and penetratio:i seal when used to seal arou.."ld electrical cables and co:idui.ts "through a nu.'ilber of penet:a tions in t..1':e concrete slao floor.

'.I'he method of foa.~ seal applicatic~ was t..~e use . pre-rnea~ur~d vol '..:...-::es of two-pa=-= :?R-85 5 RTV' s·ilicone

• 5-u-vTm <.Bi ,,..., - s l . c - • ~

of ready-to.­Fo~'1, pad:as

.l....~ ~~:!: ..... v-o-par._ _ ea a-11~ a- ... ri .... ges •.

PRE? AR.:a. T!ON

A diagra.'1 o:= the SEMCO Fi=e Test Facili t";f is attac:ied showing the details a: cons-=.:-.:ctio.-i and t..":.:e size of 4:..'.-!e

P tr ..... ·c.., .. ~.,..l"""'\""'I,..,_ .--.. .:1 - o , ~ - - -..,.. ... .: --~ ~ ··-,..1""11\. ,,_· r: ene a ... 1 .. s '-"·--~=~ .. ._.e .... oo.... n ... :;: :-e .. e ... _a._ ..... _, .. .::. :::;, ..... - ..... u-:::i. .~

and L were used for this tes~. (See Illustrations l and 2) .

The penetration details, including t.~e ty?es and sizes cf cables and cond-ui ts, were reC"'.Jested bv ?-..::i lie Ser:ice Electric . - - . and G-as.~m~~""lY (l?SE&G), Newark~ New Je=se.y, and are de::5cri~ed as f ollow-s-: . ' · . . . .· .. : _ - .,,. .

PENETRATti:m DESCR.!PTIO!I SEALANT .. ..

A - 3" 3 - 10/c #14 -Neoprene Jac.~eted 5 II - l?R-855 RTV Foe= . Cables - U.T'lcoated. cu · s-····-~' ~ ing c..·~'~ ..:.

l - 4/c #8 N~op=ene Jacketed Darorr.ing rnateri Cables - uncoa ~ed. re~-:'!oved fo::: ts,

7n~1z3~2~ I . lLftP·

"acom:~•""~.l(10f'l'I for ti-• u~• ot aut l)roduc:t1 At"e b••ed or1 t~"" •• befi• .. • to ~. •ei;~ble . .Ua"uf•cturer ar1d ta!fe,. 1r• ,.o~ ,,,;1~l"t•1bl•· f=t l'fllM!U wti.""' tne C'"OcJuc:t 1\ W\•d unC:•,. C~·-..C:RIOl'IS :.PT'S.Cd our C'¥1( 11'lL u,,~., no cuc:.1TIU.1nc•" ••II ~•rne~ or Product'I. R~1.••'C:"t ~ QI.-.~ .--- "• ~ 11:1 ~OIQ .. -c..- ~.:... .-........ _,.....,. • •....:.u..o at en. .i:><~- - at 11 .. 11toa .. c.1.

_!

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(Continued) • Pag€: 2- c:

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B 411 3 - lO/c. #l~ z.;ec?=e!1e - ... .- ..: I 5" - P~-355 ? ... ~ .. "' ·:c :-_-- ...i ac . .-~e ... e"'"' . Cables.(Coated w/Vi::-:asco) c ... ·s.; .... g SZ.:·=~z'!' ·~ ""' ~·· 2- -- 2/c #8 1;.;c?re~e Jac2"'-e":ed

~les.(Coated. w/Vi..-::.as co) l" - -· U.;.'l.. Cerafi1:er , - 4/c #14 Neo?rens Jac.~e1:eC. Oa.-:-:.:i~; wateri< -Cables.(Coated w /•,,r .L.;::a s co) I

I -

c -- 5u l -- 3" IPS Pi?e x·l2" lo~g. 5 It - PR-855 ;:)~'I' .... _" Foa:: capp~d on eX?Osed end. (Using SE.:·!..~IT -.;.

. Primed w/DC1.200 Pri.""ner on outs ids of nipple.· D a."'!l..--nin_g rna.teri< Unsupported except w/foa.-:i. removed ·eor· te~

D -- 2" 6 - 2/c #16 Shielded Cables 6" - PR-855 RTV Foa: (Uncoated} (Using SEM:-<IT ..:-.

I Da.'T:.:'1.ing materi: . re.uoved for te:

E -- 2" 2 - 2/c #:.a Neoprene Jacketed . ·s II - FR-855 RTV. Foa: Cables. (?=i.-:'!ed wit.,:,, (Usi!lg SE:·::<!T . DCl200 Pri..~er) l" - JM Cerafiber

'tl ar..:n in g materi<

i F -· 2" 2 - 2/c #..9 Neopre:i.e Jac.~eted 5" - PR-855 RTV Foa.~ -Cables. (Uncoated) (Using SE~·!::<!T -~

l "· -- .D! Cera=iber Oarr::ling ~at.e~i:

G - 2" ~ - l/c #2 ..:. 'IW st=anceC. PVC 5" - P?.-855 RT"'v Foa:

Jacketed Cables (Usi -.---·~

S ~·A·~;'T' ·~ ___ ........ __

l" - ~·! Cera.fiber. ,.

,. Darr.:ning rnat.eri~ -

L - n·~x 4 - l/c #2 'lW St=anded PVC 5 II -· PR-855 RTV Foa:

·--~~- -

Jacketed Ca.Dles installed (U~ing._ SE-"~!~ ! .. ....._.._,_

= in so.lid back cable .... _,;.v .. .-

-- '-- -- .... -==- unsupported by =oa.!:1- . l ti ~ Ceraf iber

~ ---·- except -

---

A fire test '-Has ru.~ on Monday. J'U.."'le 28, 1976 frc:n .11: 15.~.H to 2:15PM. T~e test was co:lduct.ed fer ~~=ee ·(3) hours at an acoroxi:r.a te AS'::·! E:-119 Ti.."7le/-re.:::oe=a tu=e · C'.1.t""t,te (See !ll us t.ri:l. ti on 3 .· -... -using two (2) t:~~rn:oco~?les placed under t..~e floor slab ~t the-exposed surface of the penetration seals.

..

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sur!aces c= t.~e.. ?~-253 ~;:-;.T Sil:.co:!e Fo~~ ~enet=a~io~s - .. a..-:C. a=e s~-=:,-, .• -:~ Il~,,_....__.;o~c: ~ ·~- .... u~~ ii ...... •-.:::'--.c=.-- •• '"'!""' ..,.. t..-•-"-' ·'::·· -·

OBSErt\~T!O~:'S

Fire was lu..~in~~s a."'ld.well dist=i=uted throughc~~ t.~e test. Ot."1a= t.11a..."l t."'le no:-::-. .:.1 c.."'lar;ing of t."'le c~le i:ls-..:la-=.i.=:1 a::= t.~e silicone fca=. en t..1-ie e:-=?osed surface a.::te= ~ci.:t 30 ~::::--:.es, no cha.."'lges_ occu=:ed during the th.ree ( 3) .ho·11rs of t."le test.

No cha.~ges occur=ed to t."le uneA""?Osed surfaces·of the penetration seals duri.'"lg the three ( 3) hou=s of t."le test •.

CONCLt:S !O:·~S

All penetration seals =~~ained intact a..~d secure t.hrougho~t the test. No srnoke or fla~e o=oke t.~ro~gh any cf t.r.e seals during the t..1iree ( 3) hours of the test. '!'!le heat tra:i.s:::ission through fi \re ( 5) i::"lches of :oa"71 was, in e\rery :case, =slew t.,-:,,e allowable. ave=age ter:-.:>erature rise of 250°:=-. al:love a..~ie:1t, a..."ld less t..1ian t.li.e allowao·le i.r:C.ivid~al te:r::-::iera'tu=e rise of 325°F. . -ahove a.'T'.bient ter.:perature •.

The rnaxirm.! .. -:t te:":'!~erat:i=es =eacheC. :=v t.':;.e PR-8·5 5 ?.'J:'J Foa.~ in below the uneX?os~C. ~ sur~aces were l90cF ., .(80°F above a.-:-~:.:n-:) after three hours o: tests.

This fire test was wit.""lessed by ?·:.=-. s~.:..~a Sirca= o= .t..~e

PUblic Se.=vice Elect=ic a.~d Gas New Jersey, and Mr. Ja~~ Boyle,

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A DIVISION OF PRODUCTS R£SEARCH & CHEJl.lCt.L CO::: ?ORATION Page 5 c

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