Definition(s)
Return Period
Average period of time between occurrences of a given event.
NOTE The inverse of return period expressed in years is the statistical probability of such an event occurring in any given year
Source: API Standard 2RD, Dynamic Risers for Floating Production Systems, Second Edition, September 2013. Global Standards
Return Period
Average period of time between occurrences of a given event.
NOTE The inverse of the return period is the statistical probability of such an event occurring in any given year.
Source: API RP 17G, Recommended Practice for Completion/Workover Risers, Second Edition, July 2006 (Reaffirmed April 2011). Global Standards
Return Period
Average period between occurrences of an event or of a particular value being exceeded.
NOTE The offshore industry commonly uses a return period measured in years for environmental events. The return period is equal to the reciprocal of the annual probability of exceedance of the event. [ISO 19901-1:2005]
Source: API RP 2MET, Derivation of Metocean Design and Operating Conditions, First Edition, November 2014. Global Standards
Source: ISO 19901-7:2013, Petroleum and natural gas industries – Specific requirements for offshore structures – Part 7: Stationkeeping systems for floating offshore structures and mobile offshore units. Global Standards
Source: ISO 19900:2013, Petroleum and natural gas industries – General requirements for offshore structures. Global Standards
Return Period
Average period between occurrences of an event or of a particular value being exceeded.
NOTE The offshore industry commonly uses a return period measured in years for environmental events. The return period in years is equal to the reciprocal of the annual probability of exceedance of the event. [ISO 19901-1:2005, definition 3.23].
Source: ISO 19905-1:202, Petroleum and natural gas industries – Site-specific assessment of mobile offshore units – Part 1: Jack-ups. Global Standards