Definition & Operational Usage
A backdraft is a rapid, explosive ignition of gases in a structure when oxygen is reintroduced to an oxygen-depleted environment. This phenomenon typically occurs when a door or window is opened, allowing fresh air to enter a space that has been heated by fire. The sudden influx of oxygen can cause the trapped flammable gases to ignite violently.
Category context: Core tactics, command, suppression, ventilation, search, and water supply terminology used on the fireground.
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