Research on failure risk evaluation methodology of aging urban oil and gas pipeline

doi:10.16265/j.cnki.issn1003-3033.2020.02.015

Abstract

Abstract: In order to reveal mutual relations between causes of aging urban oil and gas pipeline failure and evaluate comprehensive risk of pipelines, a failure risk evaluation methodology based on fuzzy DEMATEL method was proposed. Firstly, an index-based risk evaluation system was established through identifying failure causes. Secondly, correlation paths of these causes were determined based on fuzzy DEMATEL method, and interaction between risks was analyzed. Finally, in view of initial metrix and weights of risk evaluation indexes, comprehensive risk value of aging urban oil and gas pipelines was defined, and corresponding measures for risk reduction were put forward. The research shows that the proposed methodology can identify complex relations between failure causes of aging urban oil and gas pipelines. Among all factors, lack of public education is a major risk trigger for pipeline accidents. Nevertheless, potential risks of them could be effectively reduced by improving crack detection and enhancing control of corrosion.

Key words: aging urban oil and gas pipeline, decision making trial and evaluation laboratory (DEMATEL), failure, index-based system, risk evaluation

CLC Number:

X913.4

LI Xinhong, HAN Ziyue, LU Caiwu, ZHAO Jiangping. Research on failure risk evaluation methodology of aging urban oil and gas pipeline[J]. China Safety Science Journal, 2020, 30(2): 93-98.

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