Calculate pipeline SMYS, SMTS and allowable stress SE and SEF from pipe stress tables.
The allowable stress is calculated by multiplying the SMYS times the quality factor E and the design factor F. The quality factor is used to account for casting quality, or longitudinal weld joint quality. The design factor is used to account for design risks (for pipelines requiring a high level of safety use a low design factor). Temperature derating is not included.
Select one of the API, ASME or DNV stress table options. The API stress values are taken from API 5L tables 6 and 7 (note the API 5L X series is superseded). The ASME stress values are taken from ASME B31.3 process piping table A-1M. The DNV stress values are taken from DNVGL ST F101 submarine pipelines, tables 7-5 and 7-11.
Use the Result Table option to display the stress values for the selected stress table (click the Result Table button, and then click the make table button).
Tool Input
- syutype : Stress Table Type
- mattype : Material Type
- SMYSu : User Defined Specified Minimum Yield Stress
- SMTSu : User Defined Specified Minimum Tensile Stress
- efactype : Quality Factor Type
- Eu : User Defined Quality Factor
- ffactype : Design Factor Type
- Fu : User Defined Design Factor
Tool Output
- E : Quality Factor Or Joint Factor
- EF : Design Factor (E x F)
- F : Stress Factor
- SEF : Allowable Stress
- SMTS : Specified Minimum Tensile Stress
- SMYS : Specified Minimum Yield Stress