Rev. Met. Paris
Volume 104, Number 9, September 2007Cokerie
Utilisation de l'acier
|Page(s)||418 - 422|
|Published online||15 September 2007|
Re-assessment of the fatigue life for a riser steel pipe in an offshore loading buoy
A substantial remaining fatigue life of a riser steel pipe has been verified before re-installing it in another loading buoy. The analysis involves S-N predictions, evaluation of inspection results, fracture mechanics modelling, and stochastic modelling of the fatigue process. Recent rules and regulations give useful guidelines for deterministic fatigue life verification for items used beyond the original target service life. Through a reliability analysis, the actual probability of failure during the life extension can be revealed and an efficient inspection strategy can be determined.
© La Revue de Métallurgie, 2007
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