Based on the statistical analysis from a great deal of failure cases, generally, the failure causes of buried pipeline can be classified into four factors, namely, third-party damage, erosion–corrosion damage, design and construction error, and incorrect operation. The factors influencing the failure of pipeline are complicated, varied and fuzzy. Especially, the influence factors of third-party damage of buried pipeline are of the character of fuzziness, which are difficult to express with the accurate mathematic models. In this paper, the failure factors of buried gas pipeline are first analyzed by fault tree analysis method. Then, the failure likelihood and failure consequence, two parts of the risk, are evaluated with fuzzy comprehensive assessment method, respectively. Finally, the in-service risk of the buried gas pipeline for a certain city is expressed by the risk matrix, which is established with the failure likelihood as vertical ordinate and the failure consequence as horizontal ordinate. It is concluded that there are two pipeline units belong to high risk category, 24 pipeline units belong to medium-high risk category, 160 pipeline units belong to medium risk category, and 392 pipeline units belong to low risk category.
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e-mail: Miao_CS@163.com
e-mail: jpzhao@njut.edu.cn
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April 2012
Research Papers
Risk Analysis for the Urban Buried Gas Pipeline With Fuzzy Comprehensive Assessment Method
Chunsheng Miao,
Chunsheng Miao
Professor
School of Mechanical Engineering, Nanjing University of Technology, Nanjing 210009, China;
e-mail: Miao_CS@163.com
Jiangsu Province Special Equipment Safety Supervision Inspection Institute
, Nanjing 210003, China
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Jianping Zhao
Jianping Zhao
Professor
School of Mechanical Engineering,
e-mail: jpzhao@njut.edu.cn
Nanjing University of Technology
, Nanjing 210009, China
Search for other works by this author on:
Chunsheng Miao
Professor
School of Mechanical Engineering, Nanjing University of Technology, Nanjing 210009, China;
Jiangsu Province Special Equipment Safety Supervision Inspection Institute
, Nanjing 210003, China
e-mail: Miao_CS@163.com
Jianping Zhao
Professor
School of Mechanical Engineering,
Nanjing University of Technology
, Nanjing 210009, China
e-mail: jpzhao@njut.edu.cn
J. Pressure Vessel Technol. Apr 2012, 134(2): 021702 (6 pages)
Published Online: March 13, 2012
Article history
Received:
December 28, 2010
Accepted:
May 3, 2011
Online:
March 13, 2012
Published:
March 13, 2012
Citation
Miao, C., and Zhao, J. (March 13, 2012). "Risk Analysis for the Urban Buried Gas Pipeline With Fuzzy Comprehensive Assessment Method." ASME. J. Pressure Vessel Technol. April 2012; 134(2): 021702. https://doi.org/10.1115/1.4004625
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