引言事故树分析法(FAULT TREE ANALYSIS,简称FTA)是安全系统工程的主要分析方法之一,20世纪60年代初期由美国贝尔研究所首先提出。之后逐步在各个工业领域得到推广应用。FTA是在系统设计过程中,通过对可能造成系统 Introduction Fault tree analysis (FAULT TREE ANALYSIS, referred to as FTA) is one of the main analysis methods of safety systems engineering, the early 1960s by the United States Bell Institute first proposed. After that, it was gradually popularized and applied in various industrial fields. FTA is in the process of system design, through which may cause the system