Definition & Operational Usage
Flashover is a rapid spread of fire through a room or space, occurring when the combustible materials and gases reach their ignition temperature almost simultaneously. This phenomenon is characterized by the sudden transition from localized fire to a fully developed fire, often resulting in extreme heat and increased danger for firefighters. It typically happens when the temperature exceeds 1,000°F (538°C).
Category context: Core tactics, command, suppression, ventilation, search, and water supply terminology used on the fireground.
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