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Re-assessment of the fatigue life for a riser steel pipe in an offshore loading buoy

Published online by Cambridge University Press:  15 September 2007

T. Lassen  and
N. Recho
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Abstract

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 probabilityof failure during the life extension can be revealed and an efficient inspection strategy can be determined.

Type
Research Article
Information
Metallurgical Research & Technology , Volume 104 , Issue 9: CokerieAciérieLaminageGalvanisationUtilisation de l'acier , September 2007 , pp. 418 - 422
Copyright
© La Revue de Métallurgie, 2007

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