Analysis on safe operation of urban gas pipeline

摘要

Fault tree analysis (FTA) is a widely used method in the system safety analysis. In this approach, the logical relationship between accidents may occur and their various reasons is expressed in an arborescence, which is called fault tree analysis. By qualitative and quantitative analysis of the fault tree, the main reason for the accident can be identified. It can provide a reliable basis for determining the security countermeasures in order to achieve the purpose of predicting and preventing accidents. Combining with the survey of Chongqing City gas pipeline, the gas spill fault tree has been established. Do qualitative and quantitative research on the basic reasons for events in the fault tree, calculate the corresponding importance and accident probability, analyze the possible ways to accidents and finally the suggestions as to how the gas system could operate safely is made.