Fires begin any time a flammable or a combustible material combine together with a sufficient amount of oxidizer such as oxygen gas or another oxygen-rich compound (though non-oxygen oxidizers exist, including chlorine),[fifty six] is subjected to a source of heat or ambient temperature above the flash point for the gas/oxidizer https://baidubookmark.com/story19774480/the-smart-trick-of-fire-risk-assessor-carlisle-that-no-one-is-discussing