Mathematical model about hurt of vapor cloud explosion (VCE) was used to predict the consequence of storage vessel explosion, as well as to put forward some suitable means for prevention and risk control.

The effects of metal thermal character and coolant temperature on vapor explosion;

Extremely high rapid evaporation could occur when high-temperature particles contact with low-temperature liquid, which called vapor explosion.

The phenomenon of vapor explosions threatens the safe storage and transportation of liquefied petroleum gas.

The potential causes and the risk of steam explosion are indicated through a brief discussion on the processes of the severe accidents at the nuclear power plants in the TMI in USA and the Chernobyl in former Soviet Union.

This paper calculated the quantity of leakage of the chloroethylene, the injure consequence of the flare fire , the vapor cloud explosion ,the BLEVE fire sphere and BLEVE in one chemical plant￡?providing gist for the plant safety measures.

The occurring condition, the blast mechanism and the disaster of vapor cloud explosion of gas pipeline were analyzed emphatically.

And the analysis of result that caused from the continuous formed vapor cloud explosions and the boiled liquid expanded vapor explosions (BLEVE) were given.