Journal of Northeastern University Natural Science ›› 2015, Vol. 36 ›› Issue (3): 437-441.DOI: 10.12068/j.issn.1005-3026.2015.03.030

• Resources & Civil Engineering • Previous Articles     Next Articles

Analysis of Biomass Gasification Poisoning Accident Based on BN-bow-tie

YAN Fang, XU Kai-li, YAO Xi-wen, WANG Yan-tong   

  1. School of Resources & Civil Engineering, Northeastern University, Shenyang 110819, China.
  • Received:2014-01-01 Revised:2014-01-01 Online:2015-03-15 Published:2014-11-07
  • Contact: YAN Fang
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Abstract: Occurrence probability of biomass gasification poisoning accident is 1.20298×10-4/d by transforming fault tree to Bayesian network. The two-way derived and diagnosed function of Bayesian network was used to calculate posterior probabilities and worth of each basic event. Then analyze the weak point which led to accident in the system. The reason and the consequence of failure were analyzed combining the bow-tie. Then prevention measures were got to prevent weak point from failure and control measures were adopted after it had turned to be failure. Thereby reduce the probability of accident. After adopting measures to weak point valve leakage it can reduce poisoning accident probability by 20.92%. The aim is to reduce accident probabilities.

Key words: fault tree analysis, Bayesian network, bow-tie, gas leakage poisoning accident, biomass gasification

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