CoverGAS PIPELINE AND GAS METERING AND REGULATING STATION PROJECTDOCUMENT NO.:ED-P-1102.21-4012-001REVISION: ADOCUMENT TITLE:ABOVE GROUND PIPING WALL THICKNESS CALCULATIONA40836.0Issued for ApprovalJJPPNSREV.DATEDESCRIPTIONBYCHKAPP

PTT PUBLIC COMPANY LIMITEDRATCHABURI WORLD COGENERATION COMPANY LIMITED

Cover SheetABOVE GROUND PIPING WALL THICKNESS CALCULATIONDoc. No. ED-P-1102.21-4012-001Rev.BPage 3 of 10Project Title:Gas Pipeline and Gas Metering and Regulating Station ProjectClient:Ratchaburi World Cogeneration Company LimitedCalc Title:Above Ground Piping Wall Thickness CalculationCalculation ObjectiveCalculation MethodFor piping to ASME B31.8 : Clause 841.1 is usedAssumptions1) Pipe assumed to be straight section.2) Manufacturing allowance for ASME B31.8 piping as shown on the calculation sheets.3) Corrosion allowance is 1.6mm for specification D61, D31 , D11, L11 and G114) Pipe is assumed to be seamless for DN15 to DN300.5) Pipe assumed to be ERW for pipe greater than DN350.ReferencesASME B31.8ASME B31.4ASTM A106ASTM A333ASTM A53API5L-B,X42,X65Specification for piping material classConclusionsSee specified schedules on calculation sheets

Calculation Cover SheetTo determine the minimum required wall thickness for piping in the following ANSI Class 150,300,600 Services:

1) Natural gas metering station piping - Piping to ASME B31.8.2) Vent piping at the MLV and scraper stations on the main transmission gas pipeline - Piping to ASME B31.8.

B31.8-D61-65Piping Wall Thicknesses to ASME B31.8 (D61)Design Clause:ASME B31.8 : Clause 841.1Design VariablesPipe MaterialAPI 5L Gr.X65Design PressureP8.618Mpa =1,250PsigPipe Grade10Pipe SMYSS448.100Mpa =65,009PsigLocation Class5Design FactorF0.4Pipe Specification16Longitudinal Joint FactorE1Temperature49deg CTemp. Derating FactorT1.000Manufacturing Tolerance%0.00of Seclected wall thickness (as per Table 9 of API 5L)Corrosion AllowanceCA1.60mm.0.063inch.Nominal DiameterNominal DiameterOuter DiameterOuter DiameterNominal WTNominal WTSelected ScheduleSelected Wall Thickness (inch.)Pipe MaterialNominal WT (mm.)(DN)(inch.)(mm.)(inch.)(inch.)(mm.)DN150.521.30.8400.0832.113XS0.147API 5L Gr.X653.73DN200.7526.71.0500.0882.241XS0.154API 5L Gr.X653.91DN25133.41.3150.0952.403XS0.179API 5L Gr.X654.55DN401.548.31.9020.1092.761XS0.200API 5L Gr.X655.08DN50260.32.3740.1203.050XS0.218API 5L Gr.X655.54DN80388.93.5000.1473.737XS0.300API 5L Gr.X657.62DN1004114.34.5000.1714.348XS0.337API 5L Gr.X658.56DN1506168.36.6260.2225.646XS0.432API 5L Gr.X6510.97DN2008219.18.6260.2706.867XS0.500API 5L Gr.X6512.70DN25010273.110.750.3218.165800.593API 5L Gr.X6515.06DN30012323.912.750.3709.387-0.438API 5L Gr.X6511.13DN35014355.614.000.40010.149800.750API 5L Gr.X6519.0515.880

B31.8-D61-BPiping Wall Thicknesses to ASME B31.8 (D61)Design Clause:ASME B31.8 : Clause 841.1Design VariablesPipe MaterialAPI 5L Gr.B, A106 Gr.BDesign PressureP8.618Mpa =1,250PsigPipe Grade4Pipe SMYSS241.300Mpa =35,007PsigLocation Class5Design FactorF0.4Pipe Specification16Longitudinal Joint FactorE1Temperature49deg CTemp. Derating FactorT1.000Manufacturing Tolerance%0.00of Seclected wall thickness (as per Table 9 of API 5L)Corrosion AllowanceCA1.60mm.0.063inch.Nominal DiameterNominal DiameterOuter DiameterOuter DiameterNominal WTNominal WTSelected ScheduleSelected Wall Thickness (inch.)Pipe MaterialNominal WT (mm.)(DN)(inch.)(mm.)(inch.)(inch.)(mm.)DN150.521.30.8400.1002.553XS0.147API 5L Gr.B3.73DN200.7526.71.0500.1102.791XS0.154API 5L Gr.B3.91DN25133.41.3150.1223.091XS0.179API 5L Gr.B4.55DN401.548.31.9020.1483.756XS0.200API 5L Gr.B5.08DN50260.32.3740.1694.292XS0.218API 5L Gr.B5.54DN80388.93.5000.2195.569XS0.300API 5L Gr.B7.62DN1004114.34.5000.2646.703XS0.337API 5L Gr.B8.56DN1506168.36.6260.3599.114XS0.432API 5L Gr.B10.97DN2008219.18.6260.44811.381XS0.500API 5L Gr.B12.70DN25010273.110.750.54313.792800.593API 5L Gr.B15.06DN30012323.912.750.63216.060800.687API 5L Gr.B17.45DN35014355.614.000.68817.475800.750API 5L Gr.B19.05DN40016406.416.000.77719.743800.84321.41215.880

HDD data1PIPE SPECIFICATIONS AND DATAPipe MaterialAPI 5L X4216Pipe diameter (Norminal)DNOutside DiameterO.D.=24in.=610mm.Wall thicknesswt=0.688in.=17.475mm.Weight of MaterialE, Elastic ElongationDensity of Steel Piper=5.878lbs./ft.2-in=7.8465Kg/m2-mm7.8465Kg/m.2-mm.2.04E+06kg/cm.229E+06psiWeight per lengthW=171.54lbs./ft.=255.35kg./m.20E+04MpaYield StrengthFy=41,989psi.=289.50Mpa.Tensile StrengthFt=60,047psi.=414.01Mpa.Allowable Yield/Tensile ratio