AS4041 Straight InternalAS4041 PRESSURE PIPING - ALLOWABLE DESIGN PRESSUREWeld Joint Factor (AS4041 Table 3.12.2 or D12)e1.00Product of e x M not less than 0.7Class Design Factor (AS4041 Table 3.12.3)M1.00e x M1Design Temperature, CT525Weld Joint Strength Reduction Factor (AS4041 Table 3.12.5)W0.975Material Design Strength, MPa (AS4041, Appendix D)f82.68Pipe Outside Diameter from Pipe Charts, mmD273.2Nominal Wall Thickness from Pipe Charts, mmtm12.77Manufacturing TolerancesManufacturing Tolerance ( %)12.5Aust Pipes 10%; American Pipes 12.5%Corrosion Allowance, mmG1.6Depth of Threading, Grooving or Machining, mm0.0Pressure Design Wall Thickness, mmtf9.57Maximum Allowable Design Pressure, MPaMADP5.86AS4041 PRESSURE PIPING - REQUIRED PRESSURE DESIGN WALL THICKNESSWeld Joint Factor (AS4041 Table 3.12.2 or D12)e1.00Product of e x M not less than 0.7Class Design Factor (AS4041 Table 3.12.3)M1.00e x M1.0Design Temperature, CT525.00Weld Joint Strength Reduction Factor (AS4041 Table 3.12.5)W0.975Material Design Strength, MPa (AS4041, Appendix D)f82.68Pipe Outside Diameter from Pipe Charts, mmD273.2Manufacturing Tolerance ( %)12.5Manufacturing TolerancesCorrosion Allowance, mmG1.6Aust Pipes 10%; American Pipes 12.5%Depth of Threading, Grooving or Machining, mm0.0Design Pressure, MPap5.82Pressure Design Wall Thickness, mmtf9.51Required Wall Thickness (including allowances), mmtm12.70Therefore Choose DN250 S/S pipe will a nominal thickness > 12.7 mm

ASME B31.3 Straight InternalASME B31.3 PROCESS PIPING - ALLOWABLE DESIGN PRESSUREWeld Joint Quality Factor (ASME B31.3 Table 302.3.4)Ej1.00Seamless ASTM A312 TP316Coefficient Y (ASME B31.3 Table 304.1.1)Y0.40Design Temperature, CT-29-84.20FWeld Joint Strength Reduction Factor (ASME B31.3 Cl. 302.3.5(e))W1.000Material Allowable Stress, MPa (ASME B31.3 Table A-1M)S137.820 ksiPipe Outside Diameter from Pipe Charts, mmD273.210.75"Nominal Wall Thickness from Pipe Charts, mmtm12.77Manufacturing TolerancesManufacturing Tolerance ( %)12.5Aust Pipes 10%; American Pipes 12.5%Corrosion Allowance, mmc0.0Depth of Threading, Grooving or Machining, mm0.0Pressure Design Thickness, mmt11.17Maximum Allowable Internal Design Gauge Pressure, MPaMADP11.66ASME B31.3 PROCESS PIPING - REQUIRED PRESSURE DESIGN WALL THICKNESSWeld Joint Quality Factor (ASME B31.3 Table 302.3.4)Ej1.00Seamless ASTM A312 TP316Coefficient Y (ASME B31.3 Table 304.1.1)Y0.40Design Temperature, CT-2984.20FWeld Joint Strength Reduction Factor (ASME B31.3 Cl. 302.3.5(e))W1.000Material Allowable Stress, MPa (ASME B31.3 Table A-1M)S137.820 ksiPipe Outside Diameter from Pipe Charts, mmD273.210.75"Manufacturing Tolerance ( %)12.5Manufacturing TolerancesCorrosion Allowance, mmG0.0Aust Pipes 10%; American Pipes 12.5%Depth of Threading, Grooving or Machining, mm0.0Design Pressure, MPaP1.90845 psiPressure Design Thickness, mmt1.8730.074inchesMinimum Required Thickness (including allowances), mmtm2.1400.0842337512inchesTherefore Choose DN250 S/S pipe will a nominal thickness > 12.77 mmWhen the variation last no more than 10 hours at any one time and not more than 100 hours per year, it permissible to exceed the pressure rating or the allowable stress design at the temperature of the increas rating or the allowable stress for pressure.(P x D)/(2 x ((S x Ej x W) + (P x Y)

ika.marcelina:(P x D)/(2 x ((S x Ej x W) + (P x Y)

calculationNPSPipe ODttmtaSchThk of SchRatioValidationD/61 ksi=0.145Mpa-23 to 37.893.3204.44260CS A106 150#inmmmmmmmmmmta > tmD/t > 60.145Deg Fto 1002004005000.50.8421.3360.1593.3594.1831604.780.140137.89519.994775MpaPSIG2852602001700.751.0526.670.1993.3994.8651605.560.175177.19525.693275MPaX65CA0.0625in1.587mm11.31533.4010.2493.4493.981XS4.550.2191.51.948.260.3603.5604.445XS5.080.317NPSPipe ODttmtaSchThk of SchRatioValidation22.37560.3250.4503.6504.848XS5.540.396inmmmmmmmmmmta > tmD/t > 633.588.90.6633.8634.804STD5.490.5830.50.8421.3360.1603.3600.00044.5114.30.8534.0535.268STD6.020.7500.751.0526.670.5163.7160.00066.625168.2751.2554.4556.221STD7.111.10411.31533.4010.6463.8460.00088.625219.0751.6344.8347.158STD8.181.4381.51.948.260.9344.1340.0001010.75273.052.0375.2378.111STD9.271.79222.37560.3251.1674.3670.0001212.75323.852.4155.6158.339409.532.12533.588.91.7204.9200.0001414355.62.6525.8529.7394011.132.33344.5114.32.2125.4120.0001616406.43.0316.2318.339STD9.532.66766.625168.2753.2576.4570.0001818457.23.4106.6108.339STD9.533.00088.625219.0754.2407.4400.00020205083.7896.9898.339STD9.533.3331010.75273.055.2848.4840.0002424609.64.5477.7478.339STD9.534.0001212.75323.856.2679.4670.0001414355.66.88210.0820.000CS ASTM A106 Gr. B or API 5L Gr. B 150#1616406.47.86511.0650.000TempPS1818457.28.84812.0480.000Cbar(g)(Mpa)20205089.83113.0310.000Equation for t (pressure design thickness as per ASME B31.3)Corrosion Allowance-2919.6137.8952424609.611.79714.9970.0003819.2137.89510017.7137.895P19.65bar1.965Mpa15015.8137.895S137.9E1P5.1146.645.161.96MpaWS137.895Stress value for material table A-1 ASME B31.3 page 151137.895MpaY0.4E0.950.95CA1.587mmWWeld joint strength reduction ASME B31.3 para. 302.3.5 page 19Y0.4ASME B31.3 table 304.1.1 page 200.4CA3.2mm3.2mmCS ASTM A106 Gr. B 300#NPSPipe ODttmtaSchThk of SchRatioValidationTempPSinmmmmmmmmmmta > tmD/t > 6Cbar(g)(Mpa)0.50.8421.3360.4133.6134.1831604.78OK51.672Valid-2951.1137.90.751.0526.6700.5163.7164.8651605.56OK51.672Valid3851.1137.911.31533.4010.6463.8463.981XS4.55OK51.672Valid10046.6137.91.51.948.2600.9344.1344.244XS4.85OK51.672Valid15045.1137.922.37560.3251.1674.3674.848XS5.54OK51.672Valid33.588.9001.7204.9206.668XS7.62OK51.672Valid44.5114.3002.2125.4127.490XS8.56OK51.672Valid66.625168.2753.2576.4579.599XS10.97OK51.672Valid88.625219.0754.2407.4409.0216010.31OK51.672Valid1010.75273.0505.2848.48411.1136012.7OK51.672Valid1212.75323.8506.2679.46712.8636014.7OK51.672Valid1414355.6006.88210.08213.2046015.09OK51.672Valid1616406.4007.86511.06511.1134012.7OK51.672Valid1818457.2008.84812.04812.4864014.27OK51.672Valid2020508.0009.83113.03113.2044015.09OK51.672Valid2424609.60011.79714.99715.2954017.48OK51.672Validfor 6" & below SS A312 TP316 150#SS A312 TP 316 300#NPSPipe ODttmtaSchThk of SchRatioValidationfor 8" & above A358 Gr. 316 Class 1inmmmmmmmmmmta > tmD/t > 6TempPSTempPS0.50.8421.3360.1470.1473.4213.91OK145.558ValidCbar(g)(Mpa)Cbar(g)(Mpa)0.751.0526.670.1830.1833.981XS4.55OK145.558Valid-2919.0137.9-2949.6137.911.31533.4010.2290.2294.445XS5.08OK145.558Valid3819.0137.93849.6137.91.51.948.260.3320.3324.848XS5.54OK145.558Valid10016.2137.910042.2137.922.37560.3250.4140.4144.804STD5.49OK145.558Valid15014.8137.915038.5137.933.588.90.6110.6115.268STD6.02OK145.558Valid44.5114.30.7850.7856.221STD7.11OK145.558Valid66.625168.2751.1561.1567.158STD8.18OK145.558Valid88.625219.0751.5051.5058.111STD9.27OK145.558Valid1010.75273.051.8761.8760.000OK145.558Valid1212.75323.852.2252.2250.000OK145.558Valid1414355.62.4432.4430.000OK145.558Valid1616406.42.7922.7920.000OK145.558Valid1818457.23.1413.1410.000OK145.558Valid20205083.4903.4900.000OK145.558Valid2424609.64.1884.1880.000OK145.558ValidP1.94.96S137.9MpaE1WY0.4CA0PHE WMONPSPipe ODttmtaSchThk of SchRatioValidationTTempPSinmmmmmmmmta > tmD/t > 6tmmmD/6Cpsi(g)(Mpa)0.50.8421.3360.1514.7334.1831604.784.183.56-2919.6137.90.751.0526.670.1894.7764.8651605.564.874.453819.0137.911.31533.4010.2374.8315.5561606.355.565.5710016.2137.91.51.948.260.3424.9514.445805.084.458.0415014.8137.922.37560.3250.4275.0493.421STD3.913.4210.0533.588.90.6305.2804.183STD4.784.1814.8244.5114.30.8105.4865.268STD6.025.2719.0566.625168.2751.1925.9236.221STD7.116.2228.0588.625219.0751.5526.3347.158STD8.187.1636.511010.75273.051.9356.7718.111STD9.278.1145.511212.75323.852.2957.1838.339STD9.538.3453.981414355.62.5207.4408.339STD9.538.3459.271616406.42.8807.8518.339STD9.538.3467.731818457.23.2408.2638.339STD9.538.3476.2020205083.6008.6748.339STD9.538.3484.672424609.64.3209.4978.339309.538.34101.60P19.6bar285psi1965kPa1.96MpaS20ksi137.9MpaE1WY0.4CA2.54mmMech. Allw1.45mm0.3mmPipe Tolerance0.125CNG Lombok 9 barg CLASS AS 150# SS A312 TP 316NPSPipe ODttmtaSchThk of SchRatioValidationP1.9Mpainmmmmmmmmmmta > tmD/t > 6S20ksi0.50.8421.3360.1470.1473.26480S3.73OK145.558ValidE10.751.0526.670.1830.1833.42180S3.91OK145.558ValidW11.31533.4010.2290.2293.98180S4.55OK145.558ValidY0.41.51.948.260.3320.3324.44580S5.08OK145.558ValidCA0mm22.37560.3250.4140.4143.42140S3.91OK145.558ValidMech. Allw1.45mm33.588.90.6110.6114.80440S5.49OK145.558ValidPipe Tolerance0.12544.5114.30.7850.7855.26840S6.02OK145.558Valid66.625168.2751.1561.1566.22140S7.11OK145.558ValidTempPS88.625219.0751.5051.5057.15840S8.18OK145.558ValidCbar(g)(Mpa)1010.75273.051.8761.8768.11140S9.27OK145.558Valid-2919.0137.91212.75323.852.2252.2258.33940S9.53OK145.558Valid3819.0137.91414355.62.4432.4434.18310S4.78OK145.558Valid10016.2137.91616406.42.7922.7924.18310S4.78OK145.558Valid15014.8137.91818457.23.1413.1414.18310S4.78OK145.558Valid20205083.4903.4904.18310S4.78OK145.558Valid2424609.64.1884.1884.18310S4.78OK145.558ValidJETTY SENOROCS 150#NPSPipe ODttmtaSchThk of SchRatioValidationTempPSinmmmmmmmmmmta > tmD/t > 6Fpsig(Mpa)0.50.8421.3360.1473.1474.1831604.78-20285.0137.90.751.0526.670.1833.1834.8651605.56100285.0137.911.31533.4010.2293.2295.5561606.35200260.0137.91.51.948.260.3323.3326.2481607.14300230.0137.922.37560.3250.4143.4144.848805.5433.588.90.6113.6116.668807.62P1.9Mpa44.5114.30.7853.7855.268406.02S20ksi137.9Mpa66.625168.2751.1564.1566.221407.11E188.625219.0751.5054.5055.556206.35W1010.75273.051.8764.8765.556206.35Y0.41212.75323.852.2255.2255.556206.35CA3mm1414355.62.4435.4436.930207.92Mech. Allw-mm1616406.42.7925.7926.930207.92Pipe Tolerance0.1251818457.23.1416.1416.930207.9220205083.4906.4908.339209.532424609.64.1887.1888.339209.53

ika.marcelina:from table A-1 ASME B31.3 then convert to MPaika.marcelina:Table 2.1.1 ASME B16.5 group material 1.1ika.marcelina:Table 2.2.2 ASME B16.5 group material 2.2ika.marcelina:from table A-1 ASME B31.3 then convert to MPaika.marcelina:ASME table A-1 for temp to 100C page 200 of 400ika.marcelina:Table 2.2.2 ASME B16.5 group material 2.2ika.marcelina:from table A-1 ASME B31.3 then convert to MPaika.marcelina:19.6 barika.marcelina:17.9ika.marcelina:13.8ika.marcelina:11.7ika.marcelina:Table 2.2.2 ASME B16.5 group material 2.2ika.marcelina:from table A-1 ASME B31.3 then convert to MPaika.marcelina:internal design pressure (bar)ika.marcelina:quality factor as per table 302.3.4 of ASME B31.3 page 16ika.marcelina:coefficientika.marcelina:actual pipe thickness with negative mill toleranceika.marcelina:pipe size 1/2" ~ 1.1/2" mechanical allowance 1.45 mmika.marcelina:pipe size 2" & above mechanical allowance 0.3 mmika.marcelina:Table 2.1.1 ASME B16.5 group material 1.1ika.marcelina:from table A-1 ASME B31.3 then convert to MPaika.marcelina:Table 2.2.2 ASME B16.5 group material 2.2ika.marcelina:from table A-1 ASME B31.3 then convert to MPaika.marcelina:based on table A-1 B31.3 page 170ika.marcelina:stated in PMS that min. schedule for 1.1/2" & below should be 80Sika.marcelina:Table F2-1.1 ASME B16.5 group material 1.1 page 118ika.marcelina:from table A-1 ASME B31.3 then convert to MPaika.marcelina:based on table A-1 B31.3 page 170

Sheet3ASME B31.3

AS4041 Bend InternalAS4041 PRESSURE PIPING - REQUIRED PRESSURE DESIGN WALL THICKNESS FOR BENDSWeld Joint Factor (AS4041 Table 3.12.2 or D12)e1.00Product of e x M not less than 0.7Class Design Factor (AS4041 Table 3.12.3)M1.00e x M1.0Design Temperature, CT525.00Weld Joint Strength Reduction Factor (AS4041 Table 3.12.5)W0.975Bend Radius, measured to pipe centreline, mmR11270Material Design Strength, MPa (AS4041, Appendix D)f82.68Pipe Outside Diameter from Pipe Charts, mmD273.2Manufacturing Tolerance ( %)12.5Manufacturing TolerancesCorrosion Allowance, mmG1.6Aust Pipes 10%; American Pipes 12.5%Depth of Threading, Grooving or Machining, mm0.0Design Pressure, MPap5.82"I" at the IntradosI1.060"I" at the ExtradosI0.951Pressure Design Wall Thickness @ Intrados, mmtf8.99Problem with AS4041 formula compared to ASME B31.3 formula.Pressure Design Wall Thickness @ Extrados, mmtf9.98The intrados should get thicker and the extrados thinner.Required Wall Thickness @ Intrados, mmtm12.10As thickness is "lost"during the bending process, it would be normalRequired Wall Thickness @ Extrados, mmtm13.24to multiply the required wall thickness at the extrados by a factor of1.1 to 1.125 dependent upon how "tight"the bend radius is. The resultingvalue will give the nominal thickness of pipe required for bending.

ASME B31.3 Bend InternalASME B31.3 PROCESS PIPING - REQUIRED PRESSURE DESIGN WALL THICKNESS FOR BENDSWeld Joint Quality Factor (ASME B31.3 Table 302.3.4)Ej1.00Coefficient Y (ASME B31.3 Table 304.1.1)Y0.40Design Temperature, CT525.00Weld Joint Strength Reduction Factor (ASME B31.3 Cl. 302.3.5(e))W0.975Bend Radius, measured to pipe centreline, mmR11270Material Allowable Stress, MPa (ASME B31.3 Table A-1M)S82.6811.991ksiPipe Outside Diameter from Pipe Charts, mmD273.2Manufacturing Tolerance ( %)12.5Manufacturing TolerancesCorrosion Allowance, mmG1.6Aust Pipes 10%; American Pipes 12.5%Depth of Threading, Grooving or Machining, mm0.0Internal Gauge Pressure, MPaP5.82"I" at the IntradosI1.060"I" at the ExtradosI0.951Pressure Design Thickness @ Intrados, mmt10.14Pressure Design Thickness @ Extrados, mmt9.13Required Wall Thickness @ Intrados, mmtm13.42As thickness is "lost"during the bending process, it would be normalRequired Wall Thickness @ Extrados, mmtm12.26to multiply the required wall thickness at the extrados by a factor of1.1 to 1.125 dependent upon how "tight"the bend radius is. The resultingvalue will give the nominal thickness of pipe required for bending.