Fatigue/fracture reliability and maintainability analysis of the Heidrun TLP tether system
Conference
·
OSTI ID:194304
- Univ. of Arizona, Tucson, AZ (United States)
- Conoco Norway Inc., Lysaker (Norway)
- Conoco Norway Inc., Stabekk (Norway)
The Heidrun TLP tether system, subjected to operational oscillatory tensile loads, is vulnerable to fatigue and fracture. Because of uncertainties in loads and strengths, a reliability approach is employed to quantify structural performance and to verify integrity. Improvement in reliability can be accomplished with a maintenance program of periodic inspection and repair. Results of a reliability analysis indicate that the Norwegian Petroleum Directorate requirements relating to loadbearing structures (NPD 1992) are satisfied. Effects of uncertainties in defining system parameters are also studied.
- OSTI ID:
- 194304
- Report Number(s):
- CONF-950695--; ISBN 0-7918-1308-8
- Country of Publication:
- United States
- Language:
- English
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