埋地输气管道腐蚀故障树模糊分析

FUZZY ANALYSIS ON CORROSION FAULT TREE OF BURIED GAS PIPELINE

腐蚀是引起埋地输气管道泄漏和破裂的主要因素。对引起埋地输气管道腐蚀失效的各个因素进行系统分析,建立以埋地输气管道腐蚀失效为顶事件的埋地输气管道腐蚀失效故障树,结合管道腐蚀破坏机理和故障树模糊分析原理,分析导致管道腐蚀产生的因素,得到模糊故障树的各阶最小割集和引起埋地输气管道发生腐蚀失效的主要因素。通过算例分析表明该方法具有较大的灵活性和适应性,更加符合工程实际,是对传统故障树分析方法的进一步完善。

Corrosion is one of main factors that make buried gas pipeline leak and burst. In this paper, based on the systems analysis of corrosive failure factors of buried gas pipeline, the fault tree of corrosive failure of buried gas pipeline was forward. In addition, on the basis of the theory of corrosion of gas pipeline and the theory of the fault tree fuzzy analysis, factors of corrosive failure of buried gas pipeline were analyzed and each order minimum set was obtained. Finally, some key factors in corrosive failure of buried gas pipeline was also gotten. A practical example indicated that the method is so flexible and adaptive that it is more corresponded to engineering practice and further to improve the traditional fault tree analysis method.