This paper describes an efficient methodology that utilizes the first order reliability method (FORM) and system reliability approaches to evaluate the time-dependent failure probabilities of a pressurized pipeline at a single active corrosion defect considering three different failure modes, i.e. small leak, large leak and rupture. The criteria for distinguishing small leak, large leak and rupture at a given corrosion defect are established based on the information in the literature. The wedge integral and probability weighting factor methods are used to evaluate the probabilities of small leak and burst, whereas the conditional reliability index method is used to evaluate the probabilities of large leak and rupture. Two numerical examples are used to illustrate the accuracy, efficiency and robustness of the proposed methodology. The proposed methodology can be used to facilitate reliability-based corrosion management programs for energy pipelines.
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2012 9th International Pipeline Conference
September 24–28, 2012
Calgary, Alberta, Canada
Conference Sponsors:
- International Petroleum Technology Institute
- Pipeline Division
ISBN:
978-0-7918-4515-8
PROCEEDINGS PAPER
An Efficient Methodology for the Reliability Analysis of Corroding Pipelines Available to Purchase
S. Zhang
Western University, London, ON, Canada
W. Zhou
Western University, London, ON, Canada
Paper No:
IPC2012-90482, pp. 683-692; 10 pages
Published Online:
July 25, 2013
Citation
Zhang, S, & Zhou, W. "An Efficient Methodology for the Reliability Analysis of Corroding Pipelines." Proceedings of the 2012 9th International Pipeline Conference. Volume 4: Pipelining in Northern and Offshore Environments; Strain-Based Design; Risk and Reliability; Standards and Regulations. Calgary, Alberta, Canada. September 24–28, 2012. pp. 683-692. ASME. https://doi.org/10.1115/IPC2012-90482
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