The assessment of cracks in pipelines is one of the key elements for the integrity verification and the remaining lifetime evaluation of pipelines. This crack assessment is commonly performed through Failure Assessment Diagram (FAD) methods in which two failure criteria are combined, i.e. brittle fracture and plastic collapse. FAD assessments are, however, highly deterministic and do not take into account the various uncertainties that affect cracking. A probabilistic FAD tool is developed that accounts for these uncertainties and determines the probability of failure as a function of the crack dimensions, steel grade and pipeline characteristics. The failure probabilities are associated with a reliability index β, which is commonly used to describe structural safety. The results allow an objective comparison of different cracks across a wide range of operating characteristics, and can be used to construct a reliability-based inspection plan. Multiple parameter studies are executed in which the influence of specific variables on the reliability level is quantified.
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ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering
June 9–14, 2013
Nantes, France
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
ISBN:
978-0-7918-5532-4
PROCEEDINGS PAPER
Probabilistic FAD and Ductile Tearing Assessment Available to Purchase
Marc A. Maes,
Marc A. Maes
Blade Energy Partners, Calgary, Canada
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Ruben Van Coile,
Ruben Van Coile
Ghent University, Ghent, Belgium
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Robby Caspeele,
Robby Caspeele
Ghent University, Ghent, Belgium
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Markus R. Dann
Markus R. Dann
Chevron ETC, Aberdeen, UK
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Marc A. Maes
Blade Energy Partners, Calgary, Canada
Ruben Van Coile
Ghent University, Ghent, Belgium
Robby Caspeele
Ghent University, Ghent, Belgium
Ming Gao
Blade Energy Partners, Houston, TX
Markus R. Dann
Chevron ETC, Aberdeen, UK
Paper No:
OMAE2013-10046, V02AT02A007; 8 pages
Published Online:
November 26, 2013
Citation
Maes, MA, Van Coile, R, Caspeele, R, Gao, M, & Dann, MR. "Probabilistic FAD and Ductile Tearing Assessment." Proceedings of the ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering. Volume 2A: Structures, Safety and Reliability. Nantes, France. June 9–14, 2013. V02AT02A007. ASME. https://doi.org/10.1115/OMAE2013-10046
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