The flammable vapor pressure inside the combustible liquid storage tanks in the fire environment elevates, and the of the tank wall the yield strength of enduring the heat decreases, which cause the collapse to occur soon, resulting in the happen of BLEVE. BLEVE is an incident form of great harm, and the study of its formation mechanism and hazard model is of great significance for the safety of the chemical enterprise. In this paper, the physical and chemical characteristic of dichloropropane and BLEVE in a dichloropropane tank area is analyzed, and the accident analysis model is built. According to TNT equivalent method, the vapor cloud fire and explosion models and the blast wave overpressure injury criteria, we calculated the accident consequence of BLEVE in different filling levels. The calculation and analysis shows that, if the BLEVE occurred, the entire tank area and adjacent buildings will be severely affected and the affect area will be up to 50.35 meter; the people less than 7.43 meter from the explosion tank will be subject to serious injury or death. Based on the above substance hazardous characteristics analysis in dichloro propane tank storage area and the corresponding qualitative and quantitative analysis, and according to the relevant requirements of the specification, the fire safety prevention and control measures in the tank area should be further strengthened.


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