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CALCULATOR MODULE : Line Pipe Cross Section ±
Calculate pipe internal and external diameter, cross section area and EI from pipe schedule diameter and wall thickness. Use the Result Table option to display the results for the selected pipe diameter. For multi layer pipes (line pipe with outside layers and or inside layers), the results for each layer are displayed in the output view at the bottom of the page. Change the number of layers on the setup page. Change Module : Related Modules : |
CALCULATOR MODULE : Line Pipe Diameter Wall Thickness And Mass Schedule ±
Calculate line pipe schedule diameter, wall thickness, mass and stress. Use the Result Table option to display a table of results for the selected diameter or stress schedule. Refer to the help pages for more details about the tools. Change Module : Related Modules : |
CALCULATOR MODULE : ASME B31G Pipe Corrosion Defect ±
Calculate ASME B31G piping level 0 corrosion defect assessment for blunt defects (corrosion defects or other defects). The level 0 assessment is useful as a screening check. The allowable defect length is calculated from the maximum defect depth. The calculation is taken from ASME B31G 1999 (original ASME B31G). The level 0 check is suitable for blunt defects of all types, including corrosion, mechanical damage and grinding repairs etc. For crack type defects the NG-18 crack defect calculators are recommended. The RSTRENG method (effective area method) can also be used for blunt type defects. The temperature derating calculation is from ASME B31.8. Material specific test data should be used if it is available. Defects failing the level 0 check should be checked with a level 1 or level 2 assessment (see module links below). Use the level 1 assessment for simple defects from defect length and depth using either the original ASME B31G equation, or the modified ASME B31G equation. Use the level 2 assessment for complex defects from the defect river bottom profile. Reference : ANSI/ASME B31G Manual For Determining The Remaining Strength Of Corroded Pipelines (2012) Change Module : |
CALCULATOR MODULE : ASME B31G Level 1 Defect Assessment ±
Calculate ASME B31G level 1 corrosion defect assessment for blunt type defects. The level 1 assessment calculates the allowable pressure from the maximum defect depth and defect length, using either the original ASME B31G method (1999), or the modified ASME B31G method. Pressure derating is required if the allowable pressure is less than the maximum operating pressure. The flow stress can be calculated as either 1.1 x SMYS, SMYS + 69 MPa, or 1/2 (SMYS + SMTS). For pipelines operating at high temperature, the SMYS and SMTS should be derated. For submerged pipelines, or to calculate the allowable pressure at a reference elevation, use the level 1 calculator including elevation. The allowable local pressure is calculated including external pressure (use the external pressure = 0 for dry pipelines). The allowable reference pressure is calculated from the local allowable pressure, and the relative elevation. ASME B31G is suitable for blunt defects of all types, including corrosion, mechanical damage and grinding repairs etc. For crack type defects the NG-18 crack defect calculators are recommended. The effective area method can also be used for blunt defects. Reference : ANSI/ASME B31G Manual For Determining The Remaining Strength Of Corroded Pipelines (2012) Change Module : Related Modules : |
CALCULATOR MODULE : ASME B31G Level 2 Defect Assessment ±
Calculate ASME B31G level 2 corrosion defect assessment for blunt type defects. The level 2 assessment calculates the allowable pressure from the defect "river bottom" profile using the effective area method (also known as the RSTRENG method). Pressure derating is required if the allowable pressure is less than the maximum operating pressure. The flow stress can be calculated as either 1.1 x SMYS, SMYS + 69 MPa, or 1/2 (SMYS + SMTS). For pipelines operating at high temperature, the SMYS and SMTS should be derated. For submerged pipelines, or to calculate the allowable pressure at a reference elevation, use the level 1 and level 2 calculators including elevation. The allowable local pressure is calculated including external pressure (use the external pressure = 0 for dry pipelines). The allowable reference pressure is calculated from the local allowable pressure, and the relative elevation. ASME B31G is suitable for blunt defects of all types, including corrosion, mechanical damage and grinding repairs etc. For crack type defects the NG-18 crack defect calculators are recommended. The effective area method can also be used for blunt defects. Reference : ANSI/ASME B31G Manual For Determining The Remaining Strength Of Corroded Pipelines (2012) Change Module : Related Modules : |
CALCULATOR MODULE : AGA NG18 Level 1 Defect Assessment ±
Calculate AGA NG-18 level 1 crack defect assessment. The level 1 assessment calculates the allowable pressure from the maximum defect depth and defect length. Pressure derating is required if the allowable pressure is less than the maximum operating pressure. The flow stress can be calculated as either 1.1 x SMYS, SMYS + 69 MPa, or 1/2 (SMYS + SMTS). For pipelines operating at high temperature, the SMYS and SMTS should be derated. For submerged pipelines, or to calculate the allowable pressure at a reference elevation, use the level 1 calculator including elevation. The allowable local pressure is calculated including external pressure (use the external pressure = 0 for dry pipelines). The allowable reference pressure is calculated from the local allowable pressure, and the relative elevation. AGA NG-18 is suitable for crack defects. For blunt defects including corrosion, mechanical damage and grinding repairs etc the ASME B31G or RSTRENG calculators are recommended. Reference : AGA Pipeline Research Committee NG-18 Report 204 Ductile Fracture Properties of Selected Linepipe Steels Change Module : Related Modules : |
CALCULATOR MODULE : AGA NG18 Level 2 Defect Assessment ±
Calculate AGA NG-18 level 2 crack defect assessment. The level 2 assessment calculates the allowable pressure from the defect "river bottom" profile using the effective area method (also known as the RSTRENG method). Pressure derating is required if the allowable pressure is less than the maximum operating pressure. The flow stress can be calculated as either 1.1 x SMYS, SMYS + 69 MPa, or 1/2 (SMYS + SMTS). For pipelines operating at high temperature, the SMYS and SMTS should be derated. For submerged pipelines, or to calculate the allowable pressure at a reference elevation, use the level 1 and level 2 calculators including elevation. The allowable local pressure is calculated including external pressure (use the external pressure = 0 for dry pipelines). The allowable reference pressure is calculated from the local allowable pressure, and the relative elevation. AGA NG-18 is suitable for crack defects. For blunt defects including corrosion, mechanical damage and grinding repairs etc the ASME B31G or RSTRENG calculators are recommended. 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 ±
Calculate PR-3-805 RSTRENG piping level 0 corrosion defect assessment for blunt defects (corrosion defects or other defects). The level 0 assessment is useful as a screening check. The allowable defect length is calculated from the maximum defect depth. The calculation is taken from ASME B31G 1999 (original ASME B31G). The level 0 check is suitable for blunt defects of all types, including corrosion, mechanical damage and grinding repairs etc. For crack type defects the NG-18 crack defect calculators are recommended. The RSTRENG method (effective area method) can also be used for blunt type defects. The temperature derating calculation is from ASME B31.8. Material specific test data should be used if it is available. Defects failing the level 0 check should be checked with a level 1 or level 2 assessment (see module links below). Use the level 1 assessment for simple defects from defect length and depth using the 0.85 RSTRENG equation. Use the level 2 assessment for complex defects from the defect river bottom profile using the RSTRENG method or effective area method. 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 : |
CALCULATOR MODULE : PRCI PR 3805 RSTRENG Level 1 0.85 RSTRENG ±
Calculate the PR-3-805 RSTRENG level 1 (0.85 RSTRENG) corrosion defect assessment for blunt defects. Use the level 1 caculators to calculate the allowable pressure from the maximum defect depth and the defect length using the 0.85 RSTRENG method. Pressure derating is required if the allowable pressure is less than the maximum operating pressure. The measured pipe diameter and wall thickness should be used in the calculations. PR-3-805 RSTRENG is suitable for blunt corrosion defects and mechanical damage defects (eg from grinding). ASME B31G is also suitable for blunt defects. AGA NG-18 is suitable for crack type defects. The calculators which include elevation can be used to include external pressure, and to calculate the allowable pressure at a reference elevation (for Example to calculate the allowable pressure at the pressure control location). Set the external pressure = 0 for dry pipelines. For pipelines operating above 120 C the yield stress and ultimate stress should be derated. Material test data should be used if it is available. Flow stress can be calculated using either the RSTRENG equation, or the ASME equation. 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 : PRCI PR 3805 RSTRENG Level 2 RSTRENG Method ±
Calculate the PR-3-805 RSTRENG level 2 (RSTRENG Method) corrosion defect assessment for blunt defects. Use the level 2 calculators to calculate the allowable pressure from the defect "river bottom" profile using the effective area method (also known as the RSTRENG method). Pressure derating is required if the allowable pressure is less than the maximum operating pressure. The measured pipe diameter and wall thickness should be used in the calculations. The calculators which include elevation can be used to include external pressure, and to calculate the allowable pressure at a reference elevation (for Example to calculate the allowable pressure at the pressure control location). Set the external pressure = 0 for dry pipelines. For pipelines operating above 120 C the yield stress and ultimate stress should be derated . Use the stress derating calculator if test data is not available. Test data should be used if it is available. PR-3-805 RSTRENG is suitable for blunt corrosion defects and mechanical damage defects (eg from grinding). ASME B31G is also suitable for blunt defects. AGA NG-18 is suitable for crack type defects. Flow stress can be calculated using either the RSTRENG equation, or the ASME equation. 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 : Bolt Stress From Bolt Load ±
Calculate bolt tensile stress from bolt load. Select the bolt schedule (UNC, UNF, BSW or ISO), bolt diameter and thread, tensile area type (ANSI threads or ISO threads), and bolt material type (SAE, ISO or ASME). Bolt stress is calculated from the bolt load divided by the tensile stress area. The bolt is assumed to be in tension. The design stress is calculated from the yield stress or proof stress (SMYS). Use the Result Table option to display a table of bolt stress versus either bolt size or bolt material. Change Module : Related Modules : |
CALCULATOR MODULE : Bolt Tensile Area ±
Calculate bolt tensile area and design load from the bolt diameter and design stress. Bolt tensile area can be calculated for either ANSI threads or ISO threads. Bolt size can be calculated for either UNC, UNF, BSW or ISO bolts. The design stress can be calculated for either SAE, ISO or ASME bolt materials. The allowable bolt load is calculated from the design stress multiplied by the tensile area. Use the Result Table option to display a table of tensile area and design load versus either bolt size or bolt material. Change Module : Related Modules : |
CALCULATOR MODULE : Bolt Design Load ±
Calculate bolt design stress and design load from bolt diameter and yield stress or proof stress. Bolt load is calculated from the design stress (SAE, ISO or ASME), bolt size (UNC, UNF, BSW or ISO) and the tensile area (ANSI or ISO threads). Use the Result Table option to display a table of design stress and design load versus either bolt size or bolt material. Change Module : Related Modules : |
CALCULATOR MODULE : Flange Bolt Tensile Load ±
Calculate flange bolt load, bolt stress and flange pressure. The bolt load, bolt stress and flange pressure can be calculated from either the bolt design stress, a user defined bolt stress, a user defined bolt load, or a user defined flange pressure. The flange pressure is calculated with no gasket preload, or external loads such as bending moment. The bolt load equals the bolt stress times the tensile area. Tensile area is calculated for either ANSI or ISO threads. Bolt size can be calculated for either UNC, UNF, BSW or ISO bolts. The design stress can be calculated for either SAE, ISO or ASME bolt materials. Change Module : Related Modules : |