Fires begin when a flammable or a combustible material combine together with a sufficient quantity of oxidizer for example oxygen gas or another oxygen-rich compound (though non-oxygen oxidizers exist, including chlorine),[56] is subjected to a supply of heat or ambient temperature higher than the flash point for the fuel/oxidizer mix, https://bookmarkcolumn.com/story19728689/the-greatest-guide-to-fire-risk-assessor-carlisle