Fires begin when a flammable or a combustible material combine together with a sufficient amount of oxidizer for example oxygen gas or another oxygen-rich compound (even though non-oxygen oxidizers exist, like chlorine),[56] is subjected to a source of warmth or ambient temperature over the flash point for the gas/oxidizer mix, https://socialislife.com/story5422014/an-unbiased-view-of-fire-risk-assessor-greater-manchester