Journal of Northeastern University Natural Science ›› 2018, Vol. 39 ›› Issue (6): 886-891.DOI: 10.12068/j.issn.1005-3026.2018.06.025

• Resources & Civil Engineering • Previous Articles     Next Articles

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

WANG Yan-tong, XU Kai-li, LI Li, ZHANG Jin-jia   

  1. School of Resources & Civil Engineering, Northeastern University, Shenyang 110819, China.
  • Received:2016-11-30 Revised:2016-11-30 Online:2018-06-15 Published:2018-06-22
  • Contact: XU Kai-li
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Abstract: 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.

Key words: battery charging area, explosion accident, WBS-RBS, Bayesian network, posterior probability

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