建设项目职业病危害事故树评价方法研究
Research on Fault Tree Assessment Method for Occupational Hazard in Construction Projects
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摘要:
目的 探讨事故树分析法在建设项目职业病危害评价中的应用。 方法 对某企业进行职业卫生调查,以急性职业性甲醇中毒为顶上事件(确定不希望发生的职业病危害事件)进行事故分析,采用布尔代数运算法则求解,并对各基本原因事件进行结构重要度分析。 结果 在正常生产条件下,对急性职业性甲醇中毒进行分析,得到42个最小割集,3个最小径集;在进罐检修作业情况下,得到24个最小割集,3个最小径集,然后经过运算,得到结构重要度顺序。 结论 在建设项目职业病危害评价中应用事故树评价方法对企业预防职业病危害事故的发生具有不可忽视的指导意义。 Abstract:Objective To discuss the feasibility of fault tree analysis method for occupational hazard assessment in construction projects. Methods We investigated the occupational health in a corporation, took the acute poisoning of methanol as top affair to analysis, using boolean algebra to solve, and analyzed the configuration importance of each affair. Results In normal production condition, in the analysis of the acute poisoning of methanol, 42 minimum cut sets and 3 minimum pathway sets were received. In examine and repair tasks, 24 minimum cut sets and 3 minimum pathway sets were received. Conclusion In assessment for occupational hazard in construction project, fault tree assessment method plays an important role.
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