Citation

Zelmati D, Ghelloudj O, Amirat A. Eng. Failure Anal. 2017; 79: 171-185.

Copyright

(Copyright © 2017, European Structural Integrity Society, Publisher Elsevier Publishing)

DOI

10.1016/j.engfailanal.2017.04.025

PMID

unavailable

Abstract

Despite the various engineering models existing for lifetime investigation of hydrocarbon steel pipelines under localized corrosion and crack defects there is still a lack of information about the correlation between the two main parameters characterizing the geometrical defect model, depth and length. So the aim of the present work is a contribution in evaluating the remaining life of the pipeline using reliability analysis in order to correlate the two parameters through one common parameter, the reliability index. As a first step, the investigation is carried out on four standard and well established engineering models; Irwin, SINTAP, ASME B31G and Modified ASME B31G methods, aiming to coordinate results given by each of the four models. The potential defect depth and length correlation through a reliability index can be used as a decision-making tool to give realistic answers for replacing and/or repairing a tube subjected to internal pressure and on which flaws of different depths and lengths have been detected from inspection of a pipeline after few years of service.

Keywords: Pipeline transportation

Language: en

Keywords

Decision making; Reliability; Defects; Pipeline corrosion; Pipelines; Steel corrosion; Steel pipe; Reliability analysis; Cracks; Localized corrosion; Corrosion; Correlation methods