基于WBS-RBS-BN的蓄电池充电区域氢气火灾爆炸事故研究

通过现场测试，明确了蓄电池充电区域氢气浓度分布规律.通过WBS-RBS分析方法，得出蓄电池充电区域氢气火灾爆炸事故风险事件耦合矩阵，以此为依据得到氢气火灾爆炸事故故障树，将故障树转化为贝叶斯网络，使用GeNIe软件计算蓄电池充电区域氢气爆炸事故发生概率为2.688e-4.通过贝叶斯网络双向推导功能，计算氢气火灾爆炸事故发生条件下基本事件的后验概率，从而分析出导致事故发生的安全技术或管理的薄弱环节为人体静电、操作工人抽烟、金属部件碰撞、蓄电池过充、蓄电池破裂和机械排风装置故障，并提出了相应的对策措施，降低了蓄电池充电区域发生氢气火灾爆炸事故的风险.

Study on Hydrogen Fire and Explosion Accident in Battery Charging Area Based on WBS-RBS-BN

Through field tests， the distribution of hydrogen concentration in the battery charging area was clarified. Based on the WBS-RBS analysis method， the coupling matrices of the risk events of the hydrogen fire and explosion accident in the battery charging area were obtained. Then， the fault tree of hydrogen fire and explosion accident was obtained. After then the fault tree was transformed into a Bayesian network. Thus the probability of the hydrogen fire or explosion accident in the battery charging area calculated by the GeNIe is 2.688e-4. Through the bidirectional reasoning function of the Bayesian network， the posterior probability of the basic events under the condition of hydrogen fire and explosion accident was calculated. The safety technology or management weaknesses leading to the occurrence of the accident are: electrostatic discharge， operator smoking， metal collision， battery overcharging， battery rupture and mechanical exhaust system failure. The corresponding countermeasures are clarified to reduce the hydrogen fire and explosion accident risk of the battery charging area.