Reliability assessment of underground pipelines under the combined effect of active corrosion and residual stress

被引:141
作者
Amirat, A
Mohamed-Chateauneuf, A
Chaoui, K
机构
[1] LaMI, F-63175 Aubiere, France
[2] UBP, F-63175 Aubiere, France
[3] IFMA, F-63175 Aubiere, France
[4] Univ Badji Mokhtar, Dept Mech Engn, LR3MI, Annaba 23000, Algeria
关键词
reliability analysis; residual stress; corrosion; underground pipelines;
D O I
10.1016/j.ijpvp.2005.11.004
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Lifetime management of underground pipelines is mandatory for safe hydrocarbon transmission and distribution systems. Reliability analysis is recognized as a powerful decision-making tool for risk-based design and maintenance. Both the residual stresses generated during the manufacturing process and in-service corrosion reduce the ability to resist internal and external loading. In this study, the residual stress distribution in large diameter pipes has been characterized experimentally in order to be coupled with the corrosion model. During the pipe lifetime, residual stress relaxation occurs due to the loss of pipe thickness as material layers are consumed by corrosion. The reliability-based assessment of residual stress effects is applied to underground pipelines under a roadway, with and without active corrosion. It has been found that the residual stress greatly increases the failure probability, especially in the early stage of the pipe lifetime. (c) 2006 Elsevier Ltd. All rights reserved.
引用
收藏
页码:107 / 117
页数:11
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