Probabilistic Inspection Planning of the Åsgard A FPSO Hull Structure With Respect to Fatigue

[+] Author and Article Information
Inge Lotsberg, Gudfinnur Sigurdsson

Det Norske Veritas AS, Offshore Installations/RN520, P.O. Box 300, 1322 Ho̸vik, Norway

Per Terje Wold

Statoil, Stjo̸rdal, Norway

J. Offshore Mech. Arct. Eng 122(2), 134-140 (Feb 11, 2000) (7 pages) doi:10.1115/1.533735 History: Received November 01, 1999; Revised February 11, 2000
Copyright © 2000 by ASME
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Accumulated probability as function of service time for web in transverse frame
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Connection between side longitudinal and transverse frame
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Two components with fatigue life for C1 equal to 20 yr and C2 equal to 40 yr
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Three components with calculated life equal to 20 yr
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Two components with calculated life equal to 20 yr
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Single component with calculated life equal to 20 yr
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Two ground components with calculated fatigue lives C1 equal to 20 yr and C2 equal to 40 yr
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Two ground components with calculated fatigue lives equal to 0 yr
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Total expected cost as function of the target failure probability level. Expected inspection cost 0.1 percent; expected repair cost 1.0 percent rate of interest 6 percent.
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Transverse stiffener in the deck structure
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Doubling plate in the deck structure
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Description of inspection scenario
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POD curves for different inspection scenarios



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