Quantitative analysis based on structural reliability methods is ideally suited to managing corrosion and cracking damage in pipelines as identified through in-line inspection. An ongoing industry-sponsored initiative has laid out a reliability-based process that is intended to form the basis for an industry-accepted approach to assessing and managing pipeline integrity with respect to these damage mechanisms, with an initial focus on metal-loss corrosion. The process combines appropriate failure prediction models, in-line inspection data, the physical and operational characteristics of the pipeline, and corrosion growth rate projections, within a probabilistic analysis framework, to estimate the likelihood of corrosion failure as a function of time. It also provides the means to assess the beneficial impact of selective and staged defect remediation and to evaluate candidate remediation strategies to determine the most cost-effective approach. This paper summarizes the reliability-based assessment and integrity management process. It also illustrates how the results provided can be used to determine the most cost-effective maintenance strategy in terms of the number of features to be remediated and the preferred time to next inspection.
- International Petroleum Technology Institute and the Pipeline Division
Reliability-Based Corrosion Management: The Impact of Maintenance and Implications for the Time to Next Inspection
Stephens, M, Nessim, M, & van Roodselaar, A. "Reliability-Based Corrosion Management: The Impact of Maintenance and Implications for the Time to Next Inspection." Proceedings of the 2010 8th International Pipeline Conference. 2010 8th International Pipeline Conference, Volume 1. Calgary, Alberta, Canada. September 27–October 1, 2010. pp. 595-604. ASME. https://doi.org/10.1115/IPC2010-31399
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