30 C.F.R. § 250.908 What are the minimum structural fatigue design requirements?
Title 30 - Mineral Resources
(a) API RP 2A-WSD, Recommended Practice for Planning, Designing and Constructing Fixed Offshore Platforms (incorporated by reference as specified in 30 CFR 250.198), requires that the design fatigue life of each joint and member be twice the intended service life of the structure. When designing your platform, the following table provides minimum fatigue life safety factors for critical structural members and joints. (b) The documents incorporated by reference in §250.901 may require larger safety factors than indicated in paragraph (a) of this section for some key components. When the documents incorporated by reference require a larger safety factor than the chart in paragraph (a) of this section, the requirements of the incorporated document will prevail.
Title 30: Mineral Resources
PART 250—OIL AND GAS AND SULPHUR OPERATIONS IN THE OUTER CONTINENTAL SHELF
Subpart I—Platforms and Structures
Platform Approval Program
§ 250.908 What are the minimum structural fatigue design requirements?
------------------------------------------------------------------------ If . . . Then . . .------------------------------------------------------------------------(1) There is sufficient structural The results of the analysis must redundancy to prevent catastrophic indicate a maximum calculated life failure of the platform or of twice the design life of the structure under consideration. platform.(2) There is not sufficient The results of a fatigue analysis structural redundancy to prevent must indicate a minimum calculated catastrophic failure of the life or three times the design platform or structure. life of the platform.(3) The desirable degree of The results of a fatigue analysis redundancy is significantly must indicate a minimum calculated reduced as a result of fatigue life of three times the design damage. life of the platform.------------------------------------------------------------------------
