事故树定性分析法在实际运用中存在的问题

事故树分析法是一种应用广泛的系统安全分析方法，特别是其定性分析法在安全评价、事故调查分析中得到普遍运用。但是这种方法在实际运用中存在一些常见的问题，不易引起人们的重视。该文根据目前事故树分析法在实际运用中存在的一些突出问题，从定性分析，即最小割集和最小径集求取、结构重要度排序、事故树结果分析三个方面进行了探究，这些问题的存在说明了只有深刻的理解系统分析方法的内在涵义才能在实践中得到正确运用。文中在提出问题的同时给出了正确的运用步骤，力求使这种方法的运用更加规范、正确。

Problems of fault tree analysis in practical application

Fauh tree analysis is a widely used method of security analysis system, in particular, the qualitative a- nalysis in its safety assessment, accident investigation and analysis are generally used. However, the practical ap- plication of this method in some general issues are unlikely to cause people＇s attention. On the basis of the acci- dent analysis in the practical application of the tree there were some outstanding problems, the main contents of the qualitative analysis were analyzed from three aspects, includly the minimal cut sets and path sets the most striking structure in order of importance, the results of fault tree analysis. The existence of these problems showed that only a deep understanding of the inherent meaning of system analysis can be properly used in practice. Issues raised in this paper was given in the correct use of steps, and on the right track. and strive to make use of this approach to specificationand on the right track.