Vapor cloud explosion

A detonation of flammable vapor cloud resulting in formation of shock wave and fires
Reference: Chemical Process Safety – Fundamentals with Applications, 2nd Ed., Daniel A. Crowl/Joseph F. Louvar
Gas or vapor which, when mixed with air in certain proportions, will form an explosive gas atmosphere (EN 60079-10:1996).
Reference: S2S (safety to safety website: EN 13237:2003 (E))
Science/Flammability/Explosions/Chemical Explosion