Definition(s)
Design Life
Period for which subsea equipment can be used for its intended purpose with anticipated maintenance, but without substantial repair or replacement being necessary, including storage and working periods.
- NOTE: The design life includes the entire period from start of manufacture to termination of the subsea equipment.
Source: API Technical Report 17TR7, Verification and Validation of Subsea Connectors, First Edition, April 2017. Global Standards
Design Life
Time period for which a riser is to be used for its intended purpose, including storage and working periods with anticipated maintenance, but without substantial repair or replacement being necessary.
- NOTE: The design life includes the entire period from start of manufacturer to condemnation of the riser system or part of the system.
Source: API Standard 2RD, Dynamic Risers for Floating Production Systems, Second Edition, September 2013. Global Standards
Design Life
The planned time period from initial installation or reuse until permanent decommissioning, which may include extensions justified through the SIM process.
Source: API RP 2SIM, Structural Integrity Management of Fixed Offshore Structures, First Edition, November 2014. Global Standards
Design Life
Period for which a riser can be used for its intended purpose with anticipated maintenance but without substantial repair or replacement being necessary including storage and working periods. NOTE The design life includes the entire period from start of manufacture to condemnation of the C/WO riser system or part of the system.
Source: API RP 17G, Recommended Practice for Completion/Workover Risers, Second Edition, July 2006 (Reaffirmed April 2011). Global Standards
Design Life
Service life multiplied by an appropriate factor that is equal to, or greater than, one.
Source: API SPEC 17E, Specification for Subsea Umbilicals, Upstream Segment, Fourth Edition, October 2010. Global Standards
Design Life
Specified operational life of system after pre-delivery test.
Source: API SPEC 17F, Specification for Subsea Production Control Systems, Second Edition, December 2006 (Reaffirmed April 2011). Global Standards
Design Life
Planned usage time for the total system. NOTE Design life should not be confused with MTTF (3.1.25), which is comprised of several items that may be allowed to fail within the design life of the system as long as repair or replacement is feasible.
Source: ISO 20815:2008, Petroleum, petrochemical and natural gas industries – Production assurance and reliability management. Global Standards