In this paper , the author establishes the mechanism - based frame for performing safety analysis , illustrates the basic principle of using each kind of safety analysis technique revolving around the mission of identifying accident scenario and its elements . the role of hazard analysis items in identifying scenario and their relationship is also specified , which improves the practicability of gjb900 accordingly 论文提出了基于事故机理的安全性分析框架，阐明了围绕事故场景及其要素的鉴别来开展安全性分析的基本理论，明确了各类危险分析项目在事故场景及其要素鉴别上的作用与相互关系，从而提高了我国国家军用标准gjb900在工程中贯彻实施的系统性及可操作性。
