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http://dx.doi.org/10.5391/JKIIS.2014.24.6.651

A Prediction Method of the Gas Pipeline Failure Using In-line Inspection and Corrosion Defect Clustering  

Kim, Seong-Jun (Department of Industrial Engineering, Gangneung-Wonju National University)
Choe, Byung Hak (Department of Metal and Materials Engineering, Gangneung-Wonju National University)
Kim, Woosik (R&D Division, Korea Gas Corporation)
Publication Information
Journal of the Korean Institute of Intelligent Systems / v.24, no.6, 2014 , pp. 651-656 More about this Journal
Abstract
Corrosion has a significant influence upon the reliability assessment and the maintenance planning of gas pipeline. Corrosion defects occurred on the underground pipeline can be obtained by conducting periodic in-line inspection (ILI). However, little study has been done for practical use of ILI data. This paper deals with remaining lifetime prediction of the gas pipeline in the presence of corrosion defects. Because a pipeline parameter includes uncertainty in its operation, a probabilistic approach is adopted in this paper. A pipeline fails when its operating pressure is larger than the pipe failure pressure. In order to estimate the failure probability, this paper uses First Order Reliability Method (FORM) which is popular in the field of structural engineering. A well-known Battelle code is chosen as the computational model for the pipe failure pressure. This paper develops a Matlab GUI for illustrating failure probability predictions Our result indicates that clustering of corrosion defects is helpful for improving a prediction accuracy and preventing an unnecessary maintenance.
Keywords
Gas Pipeline; Corrosion; Failure Probability; Clustering; In-line Inspection; FORM;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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