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 gasoline/oxidizer mix, https://webcastlist.com/story21286240/a-simple-key-for-fire-risk-assessor-greater-manchester-unveiled