Abstract
Pipeline failure is a serious economic, environmental and safety issue. Risk assessment is an effective method to determine the risk of pipeline failure. This paper proposes an evaluation system. In the evaluation process, the fuzzy concept and method are used to transform the qualitative effect into quantitative fuzzy numbers based on linguistic variables. The weights are calculated by MATLAB software. Calculate the weight result and classify each indicator risk, and finally determine the pipeline failure risk level. Taking a section of the third-line pipeline of the West-East Gas Pipeline as an example, the fuzzy analytic hierarchy process is used for analysis. The two indicators of external corrosion and management system are medium risk grades, and the overall pipeline failure risk level is II (lower). The evaluation results show that the proposed evaluation system and method are effective and objective for evaluating pipeline failure risk. The pipeline failure assessment based on fuzzy analytic hierarchy process can not only objectively assess the risk status of pipelines, but also have a positive effect on improving pipeline risk management.
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