High Quality Content by WIKIPEDIA articles! A flashover is the near simultaneous ignition of all combustible material in an enclosed area. When certain materials are heated they undergo thermal decomposition and release flammable gases. Flashover occurs when the majority of surfaces in a space are heated to the autoignition temperature of the flammable gases (see also Flash point). Flashover normally occurs at 500 °C (930 °F) or 1,100°F for ordinary combustibles, and an incident heat flux at floor level of 1.8 Btu/ft *s (20 kW/m ).

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