Definition(s)
Stress Concentration Factor
Equal to the local peak stress in a component (including welds) divided by the nominal stress in the component cross-section at the location of the local peak stress.
Source: API Technical Report 17TR7, Verification and Validation of Subsea Connectors, First Edition, April 2017. Global Standards
Stress Concentration Factor (SCF)
Local peak alternating stress in a component (including welds) divided by the nominal alternating stress in the pipe wall at the location of the component.
- NOTE: This factor is used to account for the increase in the stresses caused by geometric stress amplifiers that occur in the riser component.
Source: API Standard 2RD, Dynamic Risers for Floating Production Systems, Second Edition, September 2013. Global Standards
Stress Concentration Factor (SCF)
Local peak alternating stress in a component (including welds) divided by the nominal alternating stress in the pipe wall at the location of the component.
- NOTE: This factor is used to account for the increase in the stresses caused by geometric stress amplifiers, which occur in the riser component.
Source: API RP 17G, Recommended Practice for Completion/Workover Risers, Second Edition, July 2006 (Reaffirmed April 2011). Global Standards
Stress Concentration Factor
Factor relating a nominal stress to the local stress at a detail. NOTE Adapted from ISO 19902:2007, definition 3.50.
Source: ISO 19905-1:202, Petroleum and natural gas industries – Site-specific assessment of mobile offshore units – Part 1: Jack-ups. Global Standards