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CoverCUU LONG JOINT OPERATING COMPANYSU TU NAU FIELD DEVELOPMENTPROVISION OF SU TU NAU DETAILED ENGINEERING DESIGNAND PROCUREMENT SUPPORT BLOCK 15-1PIPE WALL THICKNESS CALCULATIONDocument Number2006-4200-1J-0001Project No.: 1012CTR No.: COM-PL-100-02E01 Jul 13Issued for ReviewNguyen Van TinhOrlando RiveraKamal K.RaviRevDatePurpose of IssuePreparedCheckedPM ApprovalPTSC MC ApprovalCLJOC Approval

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ChangeCUU LONG JOINT OPERATING COMPANYSU TU NAU FIELD DEVELOPMENTPROVISION DETAILED ENGINEERING DESIGN AND PROCUREMENT SUPPORTPIPE WALL THICKNESS CALCULATION2006-4200-1J-0001Document No.:2006-4200-1J-0001Document Title:PIPE WALL THICKNESS CALCULATIONRevision:EREVISION RECORD SHEETNo.Rev. NoContent of RevisionDate of Revision1EIssued for Review01 Jul 13Document No.: 2006-4200-1J-0001 Revision EPage No.: 2 of 24

3 CUU LONG JOINT OPERATING COMPANYSU TU NAU FIELD DEVELOPMENTPROVISION DETAILED ENGINEERING DESIGN AND PROCUREMENT SUPPORTPIPE WALL THICKNESS CALCULATION2006-4200-1J-0001Document No.:2006-4200-1J-0001Document Title:PIPE WALL THICKNESS CALCULATIONRevision:E12TABLE OF CONTENTS341.SCOPE452.DEFINITIONS463.REFERENCES473.1CODES, STANDARDS AND SPECIFICATIONS483.2COMPANY PROJECT SPECIFIC SPECIFICATIONS493.3OTHER REFERENCES4ASME104.DESIGN PARAMETERS4DNV/BV/LLOYDS/ABS114.1DESIGN PRESSURE4124.2DESIGN TEMPERATURE4134.3ALLOWABLE STRESS VALUE5144.4CORROSION ALLOWANCE5154.5EROSION ALLOWANCE5164.6MECHANICAL ALLOWANCE5174.7MILL TOLERANCE5185.METHODOLOGY5196.EXCEPTIONS6207.PIPE WALL THICKNESS CALCULATION6217.1PIPING CLASS A17227.2PIPING CLASS A28237.3PIPING CLASS A69247.4PIPING CLASS A810257.5PIPING CLASS A911267.6PIPING CLASS B112277.7PIPING CLASS B613287.8PIPING CLASS D114297.9PIPING CLASS D1115307.10PIPING CLASS E116317.11PIPING CLASS E617327.12PIPING CLASS E1118337.13PIPING CLASS F119347.14PIPING CLASS F620357.15PIPING CLASS F1021367.16PIPING CLASS F1122377.17PIPING CLASS G623388.CONCLUSION2439404142434445464748495051525354Document No.: 2006-4200-1J-0001 Revision E55Page No.: 3 of 2456

4 CUU LONG JOINT OPERATING COMPANYSU TU NAU FIELD DEVELOPMENTPROVISION DETAILED ENGINEERING DESIGN AND PROCUREMENT SUPPORTPIPE WALL THICKNESS CALCULATION2006-4200-1J-0001Document No.:2006-4200-1J-0001Document Title:PIPE WALL THICKNESS CALCULATIONRevision:E121.SCOPE3The purpose of this document is to perform calculation of pipe wall thickness of all piping classes which4are applicable in Su Tu Den wellhead A & B, Su Tu Vang CPP and Su Tu Nau Field Development Project. The scope covers pipe5wall thickness of deck platform piping and topside pipelines, which are subjected to Internal Design Pressure.672.DEFINITIONS8Definition applicable to this document are:ASME9DNV/BV/LLOYDS/ABS10COMPANY: Cuu Long Joint Operating Company (CLJOC)11CONTRACTOR: PTSC MECHANICAL & CONSTRUCTION CO. LTD., [PTSC M&C]12133.REFERENCES143.1CODES, STANDARDS AND SPECIFICATION15Following Codes, Standards and Recommended Practices are referred for calculating pipe wall thickness16for topsides piping or pipelines.1718ASME B31.3Process Piping19ASME B31.8Gas Transmission and Distribution Piping Systems20ASME B31.4Pipeline Transportation Systems for Liquid Hydrocarbons and other Liquids21ASME B36.10MWelded and Seamless Wrought Steel Pipes22ASME B36.19MStainless Steel Pipes23API 5LSpecification for Line Pipe24EEMUA 144Specification: Tubes - Seamless and Welded25Note: Latest edition should be referred.26273.2COMPANY PROJECT SPECIFIC SPECIFICATIONS282006-4200-1L-0001Piping Specification (A-G)292006-4200-1L-0003Piping Design Specification30313.3OTHER REFERENCES32Ameron Bondstrand Product Catalogue 2000MFP33344.DESIGN PARAMETERS354.1DESIGN PRESSURE36The design pressure for a piping system shall be a minimum of 10% or 3.5 barg above the maximum operating37pressure, whichever is greater, unless otherwise specified by COMPANY.38394.2DESIGN TEMPERATURE40For service above ambient temperature, the design temperature shall be a minimum of 28o C above the41maximum operating temperature.4243For pipe wall thickness calculation design pressure and design temperature shall be as per Piping Specification (A-G)44Doc. No. 2006-4200-1L-0001454647484950515253545556Document No.: 2006-4200-1J-0001 Revision E57Page No.: 4 of 2458

5 CUU LONG JOINT OPERATING COMPANYSU TU NAU FIELD DEVELOPMENTPROVISION DETAILED ENGINEERING DESIGN AND PROCUREMENT SUPPORTPIPE WALL THICKNESS CALCULATION2006-4200-1J-0001Document No.:2006-4200-1J-0001Document Title:PIPE WALL THICKNESS CALCULATIONRevision:E124.3ALLOWABLE STRESS VALUE3Allowable stress values are referred from applicable design codes for respective piping class:4 Platform Process Piping: Table A-1 of ASME B31.35 Gas Transportation Pipeline: Appendix D of ASME B31.86 Pipeline Transportation System for Liquid: Table 402.3.1(a) of ASME B31.47These values have been used for pipe wall thickness calculation.894.4CORROSION ALLOWANCE (CA)10Corrosion allowance (CA) based on piping class is used as applicable.ASME11DNV/BV/LLOYDS/ABS124.5EROSION ALLOWANCE13Erosion allowance as stated in piping class is used as applicable.14154.6MECHANICAL ALLOWANCE (C)16Mechanical allowances are sum of corrosion allowance, erosion allowance, any other mechanical allowance17and threading allowance.18194.7MILL TOLERANCE20Mill tolerance has been considered as (-)12.5% for Seamless Pipes & Welded (with 100% RT) pipes.21225.METHODOLOGY23a) Pipe Wall Thickness Calculation as per ASME B31.324The formula for metallic pipe is as follows :25(ASME B31.3 para. 304.1.2)26(when t is less then D/6; or D/t > 6)27tm = t + c28T' = (T" x (1.00 - MT))(wall thickness selection validity; T' > tm ; ASME B31.3 Appendix S para. S301.2)2930The formula for GRE pipe is as follows :31(ASME B31.3 para. A304.1.1)3233tm = t + c3435t= pressure design thickness (mm)36tm= minimum required thickness plus corrosion, mechanical and erosion allowance (mm)37c= sum of mechanical allowances. (mm) (corrosion, erosion & threading allowances).38MT= factor to account mill tolerance on pipe wall thickness. (0.125 for seamless pipes and welded pipes)39T"= selected wall thickness40T'= wall thickness after deducting mill tolerance from T"41P= internal design pressure (bar) for calculation purpose converted to MPa.42D= outside diameter of pipe (mm)43S= basic allowable stress for the material44E= quality factor, as per table A-1A or A-1B of ASME B31.3.45Y= co-efficient, as per table 304.1.1 of ASME B31.3.46W= weld joint strength reduction factor, as per para. 302.3.5(e) of ASME B31.3.47F= Service (design) factor, as per para. A302.3.2(c)4849505152535455Document No.: 2006-4200-1J-0001 Revision E56Page No.: 5 of 2457

6 CUU LONG JOINT OPERATING COMPANYSU TU NAU FIELD DEVELOPMENTPROVISION DETAILED ENGINEERING DESIGN AND PROCUREMENT SUPPORTPIPE WALL THICKNESS CALCULATION2006-4200-1J-0001Document No.:2006-4200-1J-0001Document Title:PIPE WALL THICKNESS CALCULATIONRevision:E12b) Pipe Wall Thickness Calculation as per ASME B31.83The formula is as follows :4(ASME B31.8 para. 841.1.1)56tm = t + c78t= nominal wall thickness converted to mm9tm= minimum required thickness plus corrosion, mechanical and erosion allowance (mm)ASME10c= sum of mechanical allowances. (mm) (corrosion, erosion & threading allowances).DNV/BV/LLOYDS/ABS11T"= selected wall thickness as per ASME B36.10M / ASME B36.19 M.12P= internal design pressure (bar) for calculation purpose converted to psig.13D= outside diameter of pipe (in)14S= specified minimum yield strength; as per Appendix D (psig)15F= design factor; as per Table 841.1.6-116E= longitudinal joint factor as per Table 841.1.7-117T= temperature derating factor; as per Table 841.1.8-11819c) Pipe Wall Thickness Calculation as per ASME B31.420The formula is as follows :21t = (PiD)/(2S)(ASME B31.4 para. 404.1.2)22tn = t + A(ASME B31.4 para. 404.1.1)23S = 0.72 x E x SMYS(ASME B31.4 para. 402.3.1)2425t= nominal wall thickness converted to mm26tn= minimum required thickness plus corrosion, mechanical and erosion allowance (mm)27A= sum of mechanical allowances. (mm) (corrosion, erosion, external pressure & threading allowances).28T"= selected wall thickness as per ASME B36.10M / ASME B36.19 M.29Pi= internal design gage pressure (bar) for calculation purpose converted to psig.30D= outside diameter of pipe (in)31S= allowable stress value (psig)32E= quality factor as per Table 402.4.3 of ASME B31.433SMYS= specified minimum yield strength; as per Table 402.3.1a of ASME B31.4 (psig)34356.EXCEPTIONS36Pipes with sizes 1/4, 11/4, 21/4, 31/2, 5, 7, 9 and 22 shall not be used unless required by equipment37connections. For non-standard pipe size, the pipe wall thickness calculation should be calculated as per case38basis.39407.PIPE WALL THICKNESS CALCULATION41Following sections cover the pipe wall thickness calculations.The 'Sch' gives the minimum selected schedule42or wall thickness of pipe wall after the calculation. The pipe wall thicknesses are calculated in accordance with43ASME B31.3 for topside piping, ASME B31.8 for topside gas pipeline and ASME B31.4 for topside liquid pipeline.444546474849505152535455Document No.: 2006-4200-1J-0001 Revision E56Page No.: 6 of 2457

18-E11CUU LONG JOINT OPERATING COMPANYSU TU VANG EXTENSION - STV SOUTH WEST PREOJECT (SVSW)EPCI FOR WHP -SVSW, PIPELINE AND CPP MODIFICATIONPLATE COVER END THICKNESS CALCULATIONDocument No.:TBADocument Title:PLATE COVER END THICKNESS CALCULATIONRevision:1PIPING CLASS E11Design Code :ASME B31.8/31.32I) PIPE WALL THICKNESS CALCULATION3Piping Spec. Code:E114ASME Class:9005Pipe Material Standard::API 5L Gr. X65 PSL 26Material Type:CS, Ferritic Steel, Pipeline Spec.88Design Pressure, P:153.0barg2219.08psiTempSS9Design Temperature, T:38.00C( 0C )(bar)(psi)ASME10S@38.00C:4482barg65000psi0.0448265000DNV/BV/LLOYDS/ABS11c:3mm22.044826500012F:0.538.044826500013E:1.0065.044826500014T:1.0085.5448265000157Plate cover MaterialA3616S1330barg19290psi17Ref Design Code:ASME B31.8para. 841.1118ts =[( P x D) / ( 2 S F E T)]19where as defined in para. 5.b of this document2021Hydrotest check22Shoop=Phyd * D232 * tsch124Phyd=1.5 * P25=229.50barg22.95MPa262728PipePipe ODtrtstmSch1tSch1tPLT"Shoop0.9*SHydrotest Check29NPS( in )(mm)(mm)(mm)(mm)(mm)(mm)(MPa)(MPa)(Pass / Fail)066.625168.35.7458.7458012.709.509.50152.04403.34Pass01010.750273.19.32212.3226014.3012.7014.30219.11403.34Pass000II) PLATE COVER THICKNESS CALCULATIOn00Ref Design Code:ASME VIII, Div IUG (34) (C-2) Formular 10t =SQRT (CP/SE)00C = 0.33 for Figure (g)00For pipe 6"t =32.790For pipe 10"t =53.200000000LEGEND:0Sch1 =Schedule selected as next higher of tm, as per ASME dimensional standard.0tSch1 =Wall thickness in mm of Sch1, as per ASME dimensional standard.0tPL =Wall thickness in mm specified as per Table 5-1 Pipeline Wallthickness Calculation Doc no. 2006-6031-2J-000100Document No.: 2006-4200-1J-0001 Revision E0Page No.: 18 of 240

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