PAGE
Laporan Reengineering
PT. Putra Arkaca Sejati
Gas StorageTag No.
Rev. 0
Page:
RINGKASAN EKSEKUTIF
1. PENDAHULUAN Dalam usaha untuk menjamin keselamatan dan kelayakan penggunaan peralatan dan instalasi bagi manusia dan lingkungan serta demi kelangsungan produksi, khususnya di lingkungan Pengusahaan Minyak dan Gas, maka dipandang perlu adanya Pedoman dan Tata Cara Pemeriksaan Keselamatan Kerja atas instalasi.
Peralatan dan Teknik yang dipergunakan dalam lingkungan termasuk diatas, meliputi Bejana Tekan yang merupakan salah satu dari bagian dalam proses Sertifikasi SKPP (Sertifikat Kelayakan Penggunaan Peralatan), hal ini tertuang dalam SK Dirtjen Migas No. 84K/38/DJM/1998, tentang Pedoman dan Tata Cara Pemeriksaan Keselamatan Kerja atas Instalasi, Peralatan dan Teknik yang Dipergunakan Dalam Usaha Minyak & Gas Bumi. Bejana Tekan yang dipakai berfungsi sebagai Storage dalam pengoperasian Stasiun Pengisian Bahan Bakar Gas di Pondok Ungu.2. KODE & STANDARD
Dalam pelaksanaan inspeksi standard, kode dan spesifikasi yang digunakan sebagai acuan dalam melaksanakan inspeksi meliputi:
API 510, Pressure Vessel Inspection Code, Latest Edition.
API RP 572, Inspection of Pressure Vessel, Latest Edition.
NB-23- Nation Board Inspection Code, Latest Edition. ASME SECTION VIII DIVISION 1&2, Boiler and Pressure Vessel Code: Nondestructive Examination & Boiler and Pressure Vessel Code: Rules For Construction of Pressure Vessels, July 1, 2010.
3. REVIEW DOKUMEN
Dokumen yang diperoleh sudah dilakukan verifikasi dan hasil yang sesuai yang meliputi:
Perhitungan Bejana Takan
NDE Report (Ultrasonic Testing)
4. LINGKUP INSPEKSI DAN TESTING
Seperti yang tertuang dalam SK Ditjen Migas No. 84K/38/DJM/1998, tertanggal 19 Agustus 1998, tentang Pedoman dan Tata Cara Pemeriksaan Keselamatan Kerja atas Instalasi, Peralatan dan Teknik yang Dipergunakan Dalam Usaha Minyak & Gas Bumi dan Pengusahaan Sumber Daya Panas Bumi, lingkup inspeksi adalah meliputi penelaahan dokumen, inspeksi dan verifikasi konstruksi, inspeksi dan verifikasi instrument pengukur, peralatan pengaman, fasilitas keselamatan dan tanda bahaya, kabel color coding, kekencangan baut pengikat penghantar dan verifikasi operasi normal operasi peralatan.
Visual Inspeksi
Shell
: Tidak ditemukan bukti kerusakan secara visual akibat pengaruh
korosi.
Head
: Tidak ditemukan bukti kerusakan secara visual akibat pengaruh
korosi.
Manhole/Nozzle: Tidak ditemukan bukti kerusakan secara visual atau kondisi yang
kurang sesuai
Support
: Tidak ditemukan bukti kerusakan secara visual atau kondisi yang
kurang sesuai
Pressure Safety Device
1. Pressure Gauge : Ada, pada jaringan pipa.
2. Temperature Gauge : Tidak Ada.
3. PSV : Ada, pada jaringan pipa.
Coating
: Tidak ditemukan bukti kerusakan secara visual pada cat pelindung
NDT testing (Ultrasonic Testing)
NDT testing (Ultrasonic Testing) pada Bejana Tekan dilakukan oleh PT. Putra Arkaca Sejati (PT.PAS) yang meliputi pengukuran tebal dinding Shell yang dilakukan secara random pada 14 unit tube pada shell, top head dan bottom head. Berdasarkan hasil pengukuran untuk minimum tebal shell adalah 8.30mm dan minimum tebal head adalah 8.60mm.
5. TEMUAN HASIL INSPEKSI DAN PERHITUNGAN
Setelah dilakukan pemeriksaan secara visual, melakukan NDT testing dan perhitungan ulang dengan menggunakan beberapa parameter yang mengacu pada kode dan standard yang dipakai dan memverifikasi beberapa data dilapangan maka diperoleh spesifikasi teknis untuk komponen Bejana Tekan sebagai berikut ini:
DATA TEKNIS
Owner
:PT.Gagas Energi Indonesia
Tag No.
: -Serial No.
: -
Year Build
: -Ukuran
: 240 mm (OD) X1600 mm (S/S)Type
: Vertical
Lokasi
: Portable
Uraian
: 14 Unit TubeDesain Tekanan: 37.030 Kg/cm2.G
Desain Tem.
: 93 C (Asumsi)
Shell Material
: SA-283 Gr.C (Asumsi)
Head Material : SA-283 Gr.C (Asumsi)
Corrotion Allowance: 1.5 mm/Year
Kondisi Permungkaan: Cat
Radiography
: Tidak
Joint Efficiency: 0.75
6. EVALUASI HASIL PERHITUNGAN
Berdasarkan hasil pemeriksaan visual pada Bejana Tekan yang disebutkan di atas, tidak ada ditemukan ketidaksesuaian pada komponen Bejana Tekan baik dari hasil pemeriksaan secara visual maupun dan dari hasil pemeriksaan non destruktif test (Ultrasonic Testing).
Berdasarkan hasil perhitungan MAWP (Maximum Allowable Working Pressure dengan mengacu kepada kode ASME SECTION VIII DIVISION 1 dan API 510 diperoleh hasil MAWP : 48.Kg/cm2.G pada temperatur 93 oC
Dari hasil perhitungan juga diperoleh tebal pelat minimum yang disarankan agar bisa beroperasi secara baik.
No.ElementM.A.W.P
(kgf/cm) Actual Thickness
(mm)Required Thickness
(mm)Result
1Bottom Head110.469.104.13Acceptable
2Shell48.008.306.77Acceptable
3Top Head102.838.604.13Acceptable
7. KESIMPULAN
Setelah dilakukan pemeriksaan dan perhitungan ulang untuk komponen Bejana Tekan berdasarkan hasil inspeksi, verifikasi secara visual, melakukan NDT testing dan perhitungan ulang dengan menggunakan beberapa parameter yang diperoleh yang mengacu pada kode dan standard maka kami merekomendasikan Bejana Tekan dapat dipergunakan sampai jangka waktu 15 tahun, untuk mendapat sertifikas dari Migas.8. REGULASI & REFERENSI
Peraturan pemerintah yang tertuang dalam SK Dirjen MIGAS No.84K/38/DJM/1998, tertanggal 19 Agustus 1998 tentang Pedoman dan Tata Cara Pemeriksaan Keselamatan Kerja atas Instalasi, Peralatan dan Teknik yang Dipergunakan Dalam Usahan Pertambangan Minyak dan Gas Bumi dan Pengusahaan Sumber Daya Panas Bumi.
Eugene E Megyesy, Pressure Vessel HandBook , 1998 Edition.
NBIC, The National Board of Boiler and Pressure Vessel Inspectors , Dec 31, 2007.
Job No.:002/GEI/2013
MECHANICAL DESIGN CALCULATION SHEET
Gas StorageTag No.
Document No.: 002
Rev. 0
Page:
PROJECT NAME:
PT Gagas Energi Indonesia
MECHANICAL DESIGN CALCULATION SHEET
FOR
Gas StorageTag No.
0Issue for Information28-Dec-13
REV.DESCRIPTION OF REVISIONSPREPARED
BYREVIEWED
BYDISC.
APPROVALPROJECT
APPROVALISSUE
DATE
DESIGN SUMMARY
Tag No.
Design Code : ASME Section VIII, Div.1
Hydrotest Requirement: UG99-b
DescriptionDesign
Dimension (mm)(240) OD x 1600 L (S/S)
Design Int. Pressure(kgf/cm)37.03
Design Ext. Pressure (bars)FV / 93.34 oC
Design Temp. (oC)93.34
Hydrotests Pressure(kgf/cm)62.40
MAWP (kgf/cm)MAWP: 48 kgf/cm, limited by: Shell.
Joint Efficiency0.7
Thickness (mm)8.3 (Shell)/ 8.6 (Top Head) /
9.1 (Bottom Head)
Internal Corrotion Allowance (mm)1.5
MDMT(oC)-29
PWHTNo
RadiographyNone
Notes:
Table of Contents
9Cover Sheet
Title Page10Warnings and Errors11Input Echo12XY Coordinate Calculations15Internal Pressure Calculations16External Pressure Calculations19Element and Detail Weights21Vessel Design Summary23
TC "Cover Sheet" /f C DESIGN CALCULATION
In Accordance with ASME Section VIII Division 1
ASME Code Version : 2007
Analysis Performed by : PT. Putra Arkaca Sejati Job File : D:\PT.PAS\TUBE COOLER_1\TUBE COOLER.PVI
Date of Analysis : Jan 7,2014
PV Elite 2007, March 2007
TC "Title Page" /f C Note: PVElite performs all calculations internally in Imperial Units to remain compliant with the ASME Code and any built in assumptions in the ASME Code formulas. The customary Imperial database is used for consistency. The finalized results are reflected to show the users set of selected units. Refer to Code Case 2523 for more information. TC "Warnings and Errors" /f C Class From To : Basic Element Checks.
==========================================================================
Class From To: Check of Additional Element Data
==========================================================================
There were no geometry errors or warnings.
PV Elite 2008 1993-2008 by COADE Engineering Software TC "Input Echo" /f C PV Elite Vessel Analysis Program: Input Data Design Internal Pressure (for Hydrotest) 37.031 kgf/cm
Design Internal Temperature 93 C
Type of Hydrotest UG99-b
Hydrotest Position Horizontal
Projection of Nozzle from Vessel Top 0.0000 mm
Projection of Nozzle from Vessel Bottom 0.0000 mm
Minimum Design Metal Temperature -29 C
Type of Construction Welded
Special Service None
Degree of Radiography RT 1
Miscellaneous Weight Percent 0.
Use Higher Longitudinal Stresses (Flag) Y
Select t for Internal Pressure (Flag) N
Select t for External Pressure (Flag) N
Select t for Axial Stress (Flag) N
Select Location for Stiff. Rings (Flag) N
Use Hydrotest Allowable Unmodified Y
Consider Vortex Shedding N
Perform a Corroded Hydrotest N
Is this a Heat Exchanger No
User Defined Hydro. Press. (Used if > 0) 0.0000 kgf/cm
User defined MAWP 0.0000 kgf/cm
User defined MAPnc 0.0000 kgf/cm
Load Case 1 NP+EW+WI+FW+BW
Load Case 2 NP+EW+EE+FS+BS
Load Case 3 NP+OW+WI+FW+BW
Load Case 4 NP+OW+EQ+FS+BS
Load Case 5 NP+HW+HI
Load Case 6 NP+HW+HE
Load Case 7 IP+OW+WI+FW+BW
Load Case 8 IP+OW+EQ+FS+BS
Load Case 9 EP+OW+WI+FW+BW
Load Case 10 EP+OW+EQ+FS+BS
Load Case 11 HP+HW+HI
Load Case 12 HP+HW+HE
Load Case 13 IP+WE+EW
Load Case 14 IP+WF+CW
Load Case 15 IP+VO+OW
Load Case 16 IP+VE+OW
Load Case 17 IP+VF+CW
Load Case 18 FS+BS+IP+OW
Load Case 19 FS+BS+EP+OW
Wind Design Code ASCE-7 93
Design Wind Speed 112.65 km/hr
Exposure Constant C
Importance Factor 1.
Roughness Factor 1
Base Elevation 0.0000 cm
Percent Wind for Hydrotest 33.
Use Wind Profile (Y/N) N
Damping Factor (Beta) for Wind (Ope) 0.0100
Damping Factor (Beta) for Wind (Empty) 0.0000
Damping Factor (Beta) for Wind (Filled) 0.0000
Seismic Design Code UBC 94
UBC Seismic Zone (1=1,2=2a,3=2b,4=3,5=4) 0.000
UBC Importance Factor 1.000
UBC Soil Type S1
UBC Horizontal Force Factor 3.000
UBC Percent Seismic for Hydrotest 0.000
Design Nozzle for Des. Press. + St. Head Y
Consider MAP New and Cold in Noz. Design N
Consider External Loads for Nozzle Des. Y
Consider Code Case 2168 for Nozzle Des. N
Material Database Year Current w/Addenda or Code Year
Complete Listing of Vessel Elements and Details: Element From Node 10
Element To Node 20
Element Type Spherical
Description Bottom Head
Distance "FROM" to "TO" 2.0000 cm
Element Outside Diameter 240.00 mm
Element Thickness 9.1000 mm
Internal Corrosion Allowance 1.5000 mm
Nominal Thickness 0.0000 mm
External Corrosion Allowance 0.0000 mm
Design Internal Pressure 37.031 kgf/cm
Design Temperature Internal Pressure 93 C
Design External Pressure 1.0546 kgf/cm
Design Temperature External Pressure 93 C
Effective Diameter Multiplier 1.2
Material Name SA-283 C
Allowable Stress, Ambient 1103.8 kgf/cm
Allowable Stress, Operating 1103.8 kgf/cm
Allowable Stress, Hydrotest 1435.0 kgf/cm
Material Density 0.007833 kgm/cm
P Number Thickness 31.750 mm
Yield Stress, Operating 1933.4 kgf/cm
UCS-66 Chart Curve Designation A
External Pressure Chart Name CS-2
UNS Number K02401
Product Form Plate
Efficiency, Longitudinal Seam 0.75
Efficiency, Circumferential Seam 0.75
Element From Node 20
Element To Node 30
Element Type Cylinder
Description Shell
Distance "FROM" to "TO" 160.00 cm
Element Outside Diameter 240.00 mm
Element Thickness 8.3000 mm
Internal Corrosion Allowance 1.5000 mm
Nominal Thickness 0.0000 mm
External Corrosion Allowance 0.0000 mm
Design Internal Pressure 37.031 kgf/cm
Design Temperature Internal Pressure 93 C
Design External Pressure 1.0546 kgf/cm
Design Temperature External Pressure 93 C
Effective Diameter Multiplier 1.2
Material Name SA-283 C
Efficiency, Longitudinal Seam 0.75
Efficiency, Circumferential Seam 0.75
Element From Node 30
Element To Node 40
Element Type Spherical
Description Top Head
Distance "FROM" to "TO" 0.0000 cm
Element Outside Diameter 240.00 mm
Element Thickness 8.6000 mm
Internal Corrosion Allowance 1.5000 mm
Nominal Thickness 0.0000 mm
External Corrosion Allowance 0.0000 mm
Design Internal Pressure 37.031 kgf/cm
Design Temperature Internal Pressure 93 C
Design External Pressure 1.0546 kgf/cm
Design Temperature External Pressure 93 C
Effective Diameter Multiplier 1.2
Material Name SA-283 C
Efficiency, Longitudinal Seam 0.75
Efficiency, Circumferential Seam 0.75
PV Elite 2008 1993-2008 by COADE Engineering Software TC "XY Coordinate Calculations" /f C XY Coordinate Calculations | | | | | |
From| To | X (Horiz.)| Y (Vert.) |DX (Horiz.)| DY (Vert.) |
| | cm | cm | cm | cm |
Bottom Hea| 0.00000 | 2.00000 | 0.00000 | 2.00000 |
Shell| 0.00000 | 162.000 | 0.00000 | 160.000 |
Top Head| 0.00000 | 162.000 | 0.00000 | 0.00000 |
PV Elite 2008 1993-2008 by COADE Engineering Software TC "Internal Pressure Calculations" /f C Element Thickness, Pressure, Diameter and Allowable Stress : | | Int. Press | Nominal | Total Corr| Element | Allowable |
From| To | + Liq. Hd | Thickness | Allowance | Diameter | Stress(SE)|
| | kgf/cm | mm | mm | mm | kgf/cm |
Bottom Hea| 37.0307 | ... | 1.50000 | 240.000 | 827.865 |
Shell| 37.0307 | ... | 1.50000 | 240.000 | 827.865 |
Top Head| 37.0307 | ... | 1.50000 | 240.000 | 827.865 |
Element Required Thickness and MAWP : | | Design | M.A.W.P. | M.A.P. | Actual | Required |
From| To | Pressure | Corroded | New & Cold | Thickness | Thickness |
| | kgf/cm | kgf/cm | kgf/cm | mm | mm |
Bottom Hea| 37.0307 | 110.460 | 133.669 | 9.10000 | 4.13665 |
Shell| 37.0307 | 48.0003 | 58.8899 | 8.30000 | 6.77329 |
Top Head| 37.0307 | 102.831 | 125.878 | 8.60000 | 4.13665 |
Minimum 48.000 58.890
MAWP: 48.000 kgf/cm, limited by: Shell.Internal Pressure Calculation Results :ASME Code, Section VIII, Division 1, 2007Spherical Head From 10 To 20 SA-283 C , UCS-66 Crv. A at 93 CBottom HeadThickness Due to Internal Pressure [Tr]: = (P*D/2)/(2*S*E+0.8*P) per Appendix 1-1(a)(2)
= (37.031*240.0000/2)/(2*1103.82*0.75+0.8*37.031)
= 2.6366 + 1.5000 = 4.1366 mm
Max. All. Working Pressure at Given Thickness [MAWP]: = (2*S*E*(T-CA))/((D/2-0.8*(T-CA)) per Appendix 1-1 (a)(2)
= (2*1103.82*0.75*(7.6000))/(240.0000/2-0.8*(7.6000))
= 110.460 kgf/cm
Maximum Allowable Pressure, New and Cold [MAPNC]: = (2*SA*E*T)/((D/2-0.8*T) Appendix 1-1 (a)(2)
= (2*1103.82*0.75*9.1000)/(240.0000/2-0.8*9.1000)
= 133.669 kgf/cm
Actual stress at given pressure and thickness [Sact]: = (P*(D/2-0.8*(T-CA)))/(2*E*(T-CA))
= (37.031*(240.0000/2-0.8*(7.6000)))/(2*0.75*(7.6000))
= 370.047 kgf/cm
Percent Elongation per UCS-79 (75*tnom/Rf)*(1-Rf/Ro) 5.912 %
Min Metal Temp. w/o impact per UCS-66 -8 C
Min Metal Temp. at Rqd thickness (UCS 66.1)[rat 0.28] -86 C
Min Metal Temp. w/o impact per UG-20(f) -29 C
Cylindrical Shell From 20 To 30 SA-283 C , UCS-66 Crv. A at 93 CShell
Thickness Due to Internal Pressure [Tr]: = (P*D/2)/(S*E+0.4*P) per Appendix 1-1 (a)(1)
= (37.031*240.0000/2)/(1103.82*0.75+0.4*37.031)
= 5.2733 + 1.5000 = 6.7733 mm
Max. All. Working Pressure at Given Thickness [MAWP]: = (S*E*(T-Ca))/(D/2-0.4*(T-Ca)) per Appendix 1-1 (a)(1)
= (1103.82*0.75*(6.8000))/(240.0000/2-0.4*6.8000)
= 48.000 kgf/cm
Maximum Allowable Pressure, New and Cold [MAPNC]: = (SA*E*T)/(D/2-0.4*T) per Appendix 1-1 (a)(1)
= (1103.82*0.75*8.3000)/(240.0000/2-0.4*8.3000)
= 58.890 kgf/cm
Actual stress at given pressure and thickness [Sact]: = (P*(D/2-0.4*(T-Ca)))/(E*(T-Ca))
= (37.031*((240.0000/2-0.4*(6.8000)))/(0.75*(6.8000))
= 851.561 kgf/cm
Percent Elongation per UCS-79 (50*tnom/Rf)*(1-Rf/Ro) 3.582 %
Min Metal Temp. w/o impact per UCS-66 -8 C
Min Metal Temp. at Rqd thickness (UCS 66.1)[rat 0.62] -29 C
Min Metal Temp. w/o impact per UG-20(f) -29 C
Spherical Head From 30 To 40 SA-283 C , UCS-66 Crv. A at 93 CTop HeadThickness Due to Internal Pressure [Tr]: = (P*D/2)/(2*S*E+0.8*P) per Appendix 1-1(a)(2)
= (37.031*240.0000/2)/(2*1103.82*0.75+0.8*37.031)
= 2.6366 + 1.5000 = 4.1366 mm
Max. All. Working Pressure at Given Thickness [MAWP]: = (2*S*E*(T-CA))/((D/2-0.8*(T-CA)) per Appendix 1-1 (a)(2)
= (2*1103.82*0.75*(7.1000))/(240.0000/2-0.8*(7.1000))
= 102.831 kgf/cm
Maximum Allowable Pressure, New and Cold [MAPNC]: = (2*SA*E*T)/((D/2-0.8*T) Appendix 1-1 (a)(2)
= (2*1103.82*0.75*8.6000)/(240.0000/2-0.8*8.6000)
= 125.878 kgf/cm
Actual stress at given pressure and thickness [Sact]: = (P*(D/2-0.8*(T-CA)))/(2*E*(T-CA))
= (37.031*(240.0000/2-0.8*(7.1000)))/(2*0.75*(7.1000))
= 397.498 kgf/cm
Percent Elongation per UCS-79 (75*tnom/Rf)*(1-Rf/Ro) 5.575 %
Min Metal Temp. w/o impact per UCS-66 -8 C
Min Metal Temp. at Rqd thickness (UCS 66.1)[rat 0.30] -86 C
Min Metal Temp. w/o impact per UG-20(f) -29 C
MINIMUM METAL DESIGN TEMPERATURE RESULTS :Minimum Metal Temp. w/o impact per UCS-66 -8. C
Minimum Metal Temp. at Required thickness -29. C
Note: Heads and Shells Exempted to -20F (-29C) by paragraph UG-20FMinimum Design Metal Temperature ( Entered by User ) -29. C
Hydrostatic Test Pressure Results:Pressure per UG99b = 1.3 * M.A.W.P. * Sa/S 62.400 kgf/cm
Pressure per UG99b[33] = 1.3 * Design Pres * Sa/S 48.140 kgf/cm
Pressure per UG99c = 1.3 * M.A.P. - Head(Hyd) 76.533 kgf/cm
Pressure per UG100 = 1.1 * M.A.W.P. * Sa/S 52.800 kgf/cm
Horizontal Hydrotest performed in accordance with: UG-99bStresses on Elements due to Hydrostatic Test Pressure:From To Stress Allowable Ratio PressureBottom Head 515.5 1435.0 0.359 62.42
Shell 1170.1 1435.0 0.815 62.42
Top Head 547.4 1435.0 0.381 62.42
Elements Suitable for Internal Pressure.PV Elite 2008 1993-2008 by COADE Engineering Software TC "External Pressure Calculations" /f C External Pressure Calculation Results :ASME Code, Section VIII, Division 1, 2007Spherical Head From 10 to 20 Ext. Chart: CS-2 at 93 CBottom HeadElastic Modulus from Chart: CS-2 at 149 C : 0.20389E+07 kgf/cmResults for Maximum Allowable External Pressure (MAEP): Tca Sphere OD D/t Factor A B
7.600 240.00 31.58 0.0079167 1251.46
EMAP = B/((D/t)/2) = 1251.4646 /(31.5789 / 2 ) = 79.2594 kgf/cm
Results for Required Thickness (Tca): Tca Sphere OD D/t Factor A B
0.345 240.00 695.20 0.0003596 366.61
EMAP = B/((D/t)/2) = 366.6055 /(695.1965 / 2 ) = 1.0547 kgf/cm
Cylindrical Shell From 20 to 30 Ext. Chart: CS-2 at 93 CShell
Elastic Modulus from Chart: CS-2 at 149 C : 0.20389E+07 kgf/cmResults for Maximum Allowable External Pressure (MAEP): Tca OD SLEN D/t L/D Factor A B
6.800 240.00 1694.10 35.29 7.0587 0.0008879 831.64
EMAP = (4*B)/(3*(D/t)) = (4*831.6442 )/(3*35.2941 ) = 31.4177 kgf/cm
Results for Required Thickness (Tca): Tca OD SLEN D/t L/D Factor A B
1.695 240.00 1694.10 141.61 7.0587 0.0001099 112.01
EMAP = (4*B)/(3*(D/t)) = (4*112.0122 )/(3*141.6119 ) = 1.0546 kgf/cm
Results for Maximum Stiffened Length (Slen): Tca OD SLEN D/t L/D Factor A B
6.800 240.00 0.15E+33 35.29 .5000E+02 0.0008831 829.86
EMAP = (4*B)/(3*(D/t)) = (4*829.8607 )/(3*35.2941 ) = 31.3503 kgf/cm
Spherical Head From 30 to 40 Ext. Chart: CS-2 at 93 CTop HeadElastic Modulus from Chart: CS-2 at 149 C : 0.20389E+07 kgf/cmResults for Maximum Allowable External Pressure (MAEP): Tca Sphere OD D/t Factor A B
7.100 240.00 33.80 0.0073958 1251.46
EMAP = B/((D/t)/2) = 1251.4646 /(33.8028 / 2 ) = 74.0450 kgf/cm
Results for Required Thickness (Tca): Tca Sphere OD D/t Factor A B
0.345 240.00 695.20 0.0003596 366.60
EMAP = B/((D/t)/2) = 366.6047 /(695.1981 / 2 ) = 1.0547 kgf/cm
External Pressure Calculations | | Section | Outside | Corroded | Factor | Factor |
From| To | Length | Diameter | Thickness | A | B |
| | cm | mm | mm | | kgf/cm |
10| 20| No Calc | 240.000 | 7.60000 | 0.0079167 | 1251.46 |
20| 30| 169.410 | 240.000 | 6.80000 | 0.00088787 | 831.644 |
30| 40| No Calc | 240.000 | 7.10000 | 0.0073958 | 1251.46 |
External Pressure Calculations | | External | External | External | External |
From| To | Actual T. | Required T.|Des. Press. | M.A.W.P. |
| | mm | mm | kgf/cm | kgf/cm |
10| 20| 9.10000 | 1.84523 | 1.05461 | 79.2594 |
20| 30| 8.30000 | 3.19477 | 1.05461 | 31.4177 |
30| 40| 8.60000 | 1.84523 | 1.05461 | 74.0450 |
Minimum 31.418
External Pressure Calculations | | Actual Len.| Allow. Len.| Ring Inertia | Ring Inertia |
From| To | Bet. Stiff.| Bet. Stiff.| Required | Available |
| | cm | cm | cm**4 | cm**4 |
10| 20| No Calc | No Calc | No Calc | No Calc |
20| 30| 169.410 | 15.20E+30 | No Calc | No Calc |
30| 40| No Calc | No Calc | No Calc | No Calc |
Elements Suitable for External Pressure.PV Elite 2008 1993-2008 by COADE Engineering Software TC "Element and Detail Weights" /f C Element and Detail Weights | | Element | Element | Corroded | Corroded | Extra due |
From| To | Metal Wgt. | ID Volume |Metal Wgt. | ID Volume | Misc % |
| | kgm | cm | kgm | cm | kgm |
10| 20| 7.00707 | 3629.38 | 5.92188 | 3767.92 | 0.00000 |
20| 30| 75.7225 | 62715.7 | 62.4393 | 64411.4 | 0.00000 |
30| 40| 5.66886 | 2895.44 | 4.74026 | 3013.98 | 0.00000 |
---------------------------------------------------------------------------
Total 88 69240 73 71193 0
Weight SummaryFabricated Wt. - Bare Weight W/O Removable Internals 88.4 kgm
Shop Test Wt. - Fabricated Weight + Water ( Full ) 157.6 kgm
Shipping Wt. - Fab. Wt + Rem. Intls.+ Shipping App. 88.4 kgm
Erected Wt. - Fab. Wt + Rem. Intls.+ Insul. (etc) 88.4 kgm
Ope. Wt. no Liq - Fab. Wt + Intls. + Details + Wghts. 88.4 kgm
Operating Wt. - Empty Wt. + Operating Liquid (No CA) 88.4 kgm
Field Test Wt. - Empty Weight + Water (Full) 157.6 kgm
Mass of the Upper 1/3 of the Vertical Vessel 25.8 kgm
Outside Surface Areas of Elements | | Surface |
From| To | Area |
| | cm |
10| 20| 1055.58 |
20| 30| 12063.7 |
30| 40| 904.779 |
---------------------------
Total 14024.071 cm
Element and Detail Weights | To | Total Ele.| Total. Ele.|Total. Ele.| Total Dtl.| Oper. Wgt. |
From| To | Empty Wgt.| Oper. Wgt.|Hydro. Wgt.| Offset Mom.| No Liquid |
| | kgm | kgm | kgm | kgf-m. | kgm |
10| 20| 7.00707 | 7.00707 | 10.6348 | 0.00000 | 7.00707 |
20| 30| 75.7225 | 75.7225 | 138.410 | 0.00000 | 75.7225 |
30| 40| 5.66886 | 5.66886 | 8.56299 | 0.00000 | 5.66886 |
Cumulative Vessel Weight | | Cumulative Ope | Cumulative | Cumulative |
From| To | Wgt. No Liquid | Oper. Wgt. | Hydro. Wgt. |
| | kgm | kgm | kgm |
10| 20| 88.3984 | 88.3984 | 157.608 |
20| 30| 81.3913 | 81.3913 | 146.973 |
30| 40| 5.66886 | 5.66886 | 8.56299 |
Note: The cumulative operating weights no liquid in the column above are the cumulative operating weights minus the operating liquid weight minus any weights absent in the empty condition.Cumulative Vessel Moment | | Cumulative | Cumulative |Cumulative |
From| To | Empty Mom. | Oper. Mom. |Hydro. Mom.|
| | kgf-m. | kgf-m. | kgf-m. |
10| 20| 0.00000 | 0.00000 | 0.00000 |
20| 30| 0.00000 | 0.00000 | 0.00000 |
30| 40| 0.00000 | 0.00000 | 0.00000 |
PV Elite 2008 1993-2008 by COADE Engineering Software TC "Vessel Design Summary" /f C Design Code: ASME Code Section VIII Division 1, 2007Diameter Spec : 240.000 mm OD
Vessel Design Length, Tangent to Tangent 162.00 cm
Distance of Bottom Tangent above Grade 0.00 cm
Distance of Base above Grade 0.00 cm
Specified Datum Line Distance 0.00 cm
Shell/Head Matl SA-283 C
Internal Design Temperature 93 C
Internal Design Pressure 37.03 kgf/cm
External Design Temperature 93 C
External Design Pressure 1.05 kgf/cm
Maximum Allowable Working Pressure 48.00 kgf/cm
External Max. Allowable Working Pressure 31.42 kgf/cm
Hydrostatic Test Pressure 62.40 kgf/cm
Required Minimum Design Metal Temperature -29 C
Warmest Computed Minimum Design Metal Temperature -29 C
Wind Design Code ASCE-93
Earthquake Design Code UBC-94
Element Pressures and MAWP: kgf/cmElement Desc Internal External M.A.W.P Corr. All.Bottom Head 37.031 1.055 110.460 1.5000
Shell 37.031 1.055 48.000 1.5000
Top Head 37.031 1.055 102.831 1.5000
Element "To" Elev Length Element Thk R e q d T h k Joint Eff
Type cm cm mm Int. Ext. Long CircSphere 2.0 2.0 9.1 4.1 1.8 0.75 0.75
Cylinder 162.0 160.0 8.3 6.8 3.2 0.75 0.75
Sphere 162.0 0.0 8.6 4.1 1.8 0.75 0.75
Element thicknesses are shown as Nominal if specified, otherwise are MinimumNote: Wind and Earthquake moments include the effects of user defined forces and moments if any exist in the job and were specified to act (compute loads and stresses) during these cases. Also included are moment effects due to eccentric weights if any are present in the input.Weights:Fabricated - Bare W/O Removable Internals 88.4 kgm
Shop Test - Fabricated + Water ( Full ) 157.6 kgm
Shipping - Fab. + Rem. Intls.+ Shipping App. 88.4 kgm
Erected - Fab. + Rem. Intls.+ Insul. (etc) 88.4 kgm
Empty - Fab. + Intls. + Details + Wghts. 88.4 kgm
Operating - Empty + Operating Liquid (No CA) 88.4 kgm
Field Test - Empty Weight + Water (Full) 157.6 kgm
PV Elite 2008 1993-2008 by COADE Engineering Software
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