Reliability analysis of fatigue sensitive joints in FPSO
Conference
·
OSTI ID:194303
- Nevesbu, The Hague (Netherlands)
- Bluewater, Hoofddorp (Netherlands)
This paper contains a general description and the results of a reliability analysis made for fatigue sensitive joints in an FPSO. The main aim of the analysis was to demonstrate that the inspection program, which was specified based on the IMO resolution, will guarantee an acceptable probability level of fatigue and fracture failure during 20 years of service of the unit. Three approaches have been followed: the SN-approach and the fracture mechanics approach with and without allowance for fracture. The planned inspection program has been taken into account in the third approach. The stress assessment has been based on the spectral analysis corrected for the intermittent wetting effect. A short description of the deterministic analyses which preceded the reliability analysis has been included. It has been demonstrated in the paper that the probability of fatigue and fracture failure in an inspected structure can be assessed and judged by use of the reliability analysis.
- OSTI ID:
- 194303
- Report Number(s):
- CONF-950695--; ISBN 0-7918-1308-8
- Country of Publication:
- United States
- Language:
- English
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