基于FTA与SPA方法的湿法成型硫磺料仓安全分析与评价研究

Study on safety analysis and evaluation of wet formed sulfur bunker based on FTA and SPA

为了控制湿法成型硫磺料仓风险,评估硫磺料仓安全状态,采用事故树方法分析了硫磺料仓发生火灾爆炸事故的原因,并利用最小割集和最小径集分析了事故的可能途径,确定了最佳控制方案为控制可燃粉尘和气体的聚集。针对硫磺料仓安全状态影响因素的不确定性和动态性的特点,将多元联系数集对分析法引入硫磺料仓危险性评价中,建立了料仓危险性评价指标体系,综合判断了料仓危险性态势。评价结果与现场实际情况较符合,为湿法成型硫磺料仓的安全评价工作提供了思路,为其风险控制措施的制定提供了参考。

In order to control the risk and evaluate the safety state of wet formed sulfur bunker, the method of fault tree analysis was applied to analysis the reasons of fire and explosion accidents in the bunker.By using the least cut-set and the least path-set, the possible ways of accidents were analyzed, and the optimal controlling scheme was determined to be controlling the gathering of combustible dust and gas.Aiming at the characteristics of uncertainty and dynamic in influence factors on safety state of sulfur bunker, the set pair analysis with multivariate connection number was introduced into the hazard assessment of sulfur bunker.An index system for hazard assessment of sulfur bunker was established, and the hazard situation of bunker was judged comprehensively.The evaluation results were comparatively in accord with the field practical situation.It provides an idea for the safety evaluation of wet formed sulfur bunker, as well as a reference for the formulation of risk control measures.