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CALCULATOR MODULE : ASME B31.3 Process Piping Basic Allowable Stress ±
Calculate ASME B31.3 process piping allowable stress (S), yield stress (SYT) and tensile stress (SUT) from temperature for low pressure piping (ASME B31.3 Table A-1) and high pressure piping (ASME B31.3 Table K-1). Stress values are interpolated from the US data tables (US units govern). For temperatures below the data range, the stress value is constant (fracture toughness should also be considered for low temperature operation). For temperatures above the data range the stress values can either be constant value from the end point, constant slope from the end point, or zero from the end point. Engineering judgement is required to use extrapolated values above the data range. Use the Data Plot option to plot the allowable stress versus temperature for the selected material. Use the Data Table option to display the data table in the popup window (Table A-1 or K-1). Use the Result Table option to display a table of allowable stress versus material type. Refer to the help pages for notes on the data tables. Change units on the setup page. Use the workbook ASME B31.3 data tables to look up allowable stress data. Note : The choice of high pressure versus low pressure service is at the discretion of the owner (section FK300). The ASME B16.5 Class 2500 pressure temperature rating for the material group is often used as a criteria. Reference : ANSI/ASME B31.3 : Process Piping (2018) Change Module : Related Modules : |
CALCULATOR MODULE : ASME B31.8 Gas Pipeline Allowable Stress ±
Calculate ASME B31.8 gas pipeline allowable stress from temperature for onshore and offshore pipelines. Select the appropriate stress table (API, ASM, DNV etc), and material. Use the Result Table option to display the results for the selected stress table (click the Result Table button on the plot bar, then click the make table button). For metal pipeline the pressure design thickness equals the nominal wall thickness minus the corrosion allowance. Fabrication tolerance is ignored. Reference : ANSI/ASME B31.8 : Gas Transmission And Distribution Piping Systems (2018) Change Module : |
CALCULATOR MODULE : ASME B31.8 Gas Pipeline Temperature Derating ±
Calculate ASME B31.8 gas pipeline temperature derating for onshore and offshore steel pipelines (carbon steel and low alloy steel?). The temperature derating factor is not valid for nickel alloy or stainless steel pipelines. Reference : ANSI/ASME B31.8 : Gas Transmission And Distribution Piping Systems (2018) Change Module : |
CALCULATOR MODULE : ASME B31G Flow Stress ±
Calculate ASME B31G flow stress from SMYS and SMTS. Flow stress can be calculated by three methods - Sf = 1.1 x SMYS (Plain Carbon Steel T < 120 C and Sf < SMTS)
- Sf = SMYS + 69 MPA (SMYS ≤ 483 MPa, T < 120 C and Sf < SMTS)
- Sf = (SYT + SUT) / 2 (SMYS ≤ 551 MPa)
SYT and SUT are the temperature derated yield stress and tensile stress for temperatures above 120 C. The derating factors are valid up to 232 C (450 F). Material specific test data should be used if it is available. Reference : ANSI/ASME B31G Manual For Determining The Remaining Strength Of Corroded Pipelines (2012) Change Module : Related Modules : |
CALCULATOR MODULE : ASME B31.1 Power Piping Allowable Stress ±
Calculate ASME B31.1 power piping basic allowable stress (S), allowable stress (SE), design stress (SEW), tensile stress (SUT), and yield stress (SYT) from the design temperature (US units). The allowable stress (SE) is calculated from tables A-1 to A-10. The calculated stress values are constant for temperatures below the data range. For temperatures above the data range, the stress values can be calculated as either a constant value from the highest data point, constant slope from the highest data point, or set to zero. Stress values for temperatures above the data range should be ued carefully (engineering judgement is required). The yield stress and tensile stress are assumed to be proportional to the allowable stress (approximate only). Actual yield stress and tensile stress temperature data should be used if it is available. The weld factor is only relevant for temperatures in the creep range. The weld factor W = 1 for temperatures below the creep onset temperature, or for seamless pipe. Use the data plot option to plot the allowable stress versus temperature for the selected material. Use the Data Table option to display the data table in the popup window. Use the Result Table option to display a table of allowable stress versus material type. The calculations use US standard units. Change input and output units on the setup page. Refer to the help pages for notes on the data tables (click the resources button on the data bar). Use the workbook ASME B31.1 data tables to look up allowable stress data. Reference : ANSI/ASME B31.1 : Power Piping (2014) Change Module : Related Modules : |
CALCULATOR MODULE : ASME B31.5 Refrigeration Piping Allowable Stress ±
Calculate ASME B31.5 refrigeration piping allowable stress (S), yield stress (SYT) and tensile stress (SUT) from the design temperature. Stress values are calculated from temperature using Table 502.3.1 (US values). Change units on the setup page. For temperatures below the data range, the stress value is constant (fracture toughness should also be considered for low temperature operation). For temperatures above the data range the stress values can either be constant value for the end point, constant slope from the end point, or zero from the end point. Engineering judgement is required to use extrapolated values above the data range. Use the data plot option to plot the allowable stress versus temperature for the selected material. Use the Data Table option to display the data table in the popup window. Use the Result Table option to display a table of allowable stress versus material type. Refer to the help pages for notes on the data tables. Use the workbook ASME B31.5 data tables to look up allowable stress data. Reference : ANSI/ASME B31.5 : Refrigeration Piping And Heat Transfer Components (2013) Change Module : Related Modules : |
CALCULATOR MODULE : DNVGL ST F101 Submarine Pipeline Temperature Derating ±
Calculate DNVGL-ST-F101 submarine pipeline temperature derating stress from temperature. Derating is valid for temperatures up to 200 C. Material specific test data should be used if it is available. For low temperature pipelines, fracture toughness should also be considered. Reference : DNVGL-ST-F101 : Submarine Pipeline Systems (Download from the DNVGL website) Change Module : |
CALCULATOR MODULE : AGA NG18 Flow Stress ±
Calculate AGA NG-18 flow stress from SMYS and SMTS. Flow stress can be calculated by three methods - Sf = 1.1 x SMYS (Plain Carbon Steel T < 120 C and Sf < SMTS)
- Sf = SMYS + 69 MPA (SMYS ≤ 483 MPa, T < 120 C and Sf < SMTS)
- Sf = (SYT + SUT) / 2 (SMYS ≤ 551 MPa)
SYT and SUT are the temperature derated yield stress and tensile stress for temperatures above 120 C. The derating factors are valid up to 232 C (450 F). Material specific stress data should be used if it is available. Reference : AGA Pipeline Research Committee NG-18 Report 204 Ductile Fracture Properties of Selected Linepipe Steels Change Module : Related Modules : |
CALCULATOR MODULE : PRCI PR 3805 RSTRENG Flow Stress ±
Calculate PR-3-805 RSTRENG flow stress from SMYS and SMTS. Flow stress can be calculated by three methods - Sf = 1.1 x SMYS (Plain Carbon Steel T < 120 C and Sf < SMTS) original ASME B31G
- Sf = SMYS + 69 MPA (SMYS ≤ 483 MPa, T < 120 C and Sf < SMTS) RSTRENG
- Sf = (SYT + SUT) / 2 (SMYS ≤ 551 MPa) modified ASME B31G
SYT and SUT are the temperature derated yield stress and tensile stress for temperatures above 120 C. The derating factors are valid up to 232 C (450 F). Material specific stress data should be used if it is available. Reference : PRCI, Pipeline Research Committee Project, PR-3-805, “A Modified Criterion for Evaluating the Remaining Strength of Corroded Pipe,” December 22, 1989, PRCI PR-3-805 (R-STRENG) With RSTRENG Disk. Change Module : Related Modules : |
CALCULATOR MODULE : API RP 1111 Pipeline Temperature Derating ±
Calculate API RP 1111 limit state pipeline temperature derating for offshore steel pipelines (carbon steel and low alloy steel). The temperature derating factor is taken from ASME B31.8 section 841.1 Table 841.1.8-1. The derating factor is not valid for nickel alloy or stainless steel pipelines. Reference : API RP 1111 : Design, Construction, Operation, and Maintenance of Offshore Hydrocarbon Pipelines (Limit State Design) (2011) Change Module : |
CALCULATOR MODULE : DNVGL RP F101 Temperature Derating ±
Calculate DNVGL RP F101 yield stress and ultimate stress temperature derating from temperature. The derating stress is calculated in accordance with DNV OS F101 submarine pipeline systems. The derating stress is valid for temperatures less than or equal to 200 degrees C. Material tests should be performed for operating temperatures above 200 C. Reference : DNVGL-RP-F101 : Corroded Pipelines (Download from the DNVGL website) Change Module : |
DATA MODULE : ASME ANSI API Design Factor ( Open In Popup Workbook ) ±
ASME, ANSI and API design factors for use with the ASME, ANSI and API codes. Related Modules : |