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Title: A reliability-based approach for the condition assessment of corroding pipelines
Category: Technical papers from the Journal of Pipeline Integrity
Downloadable: Yes 
Catalog No.: 2037
Date of Publication: Sept 03
Price: $25.00 US
Authors: Francisco Caleyo et al.
Abstract: This work presents a study in which the data collected using high-resolution in-lineinspection tools are combined with fitness-for-purpose probabilistic assessment in order to evaluate the present and future integrity of in-service corroded pipelines. A structural reliability analysis framework is developed which is capable of evaluating the condition of a corroding pipeline and the evolution of its probability of failure with service. The uncertainties associated with the inspection tool, corrosion growth rate, pipeline geometry, material strength, and operating pressure are modeled and used to determine the probability of failure of the pipeline. The results of this evaluation are compared with target reliability levels derived by risk analysis in order to produce decision models for re-inspection, corrosion control, re-rating, and repairing. The proposed methodology allows strategies to be proposed to ensure the current and future safe operation of the pipeline based on minimizing the cost of remediation while maintaining, at least, the projected operational and safety goals.
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