At what critical temperature does flashover typically occur?

Flashover is a phenomenon that occurs in a fire when the temperature rises to a point where the combustible materials in the space ignite almost simultaneously. Typically, flashover happens around 1000 degrees Fahrenheit (540 degrees Celsius). At this temperature, the heat is sufficient to ignite the gases produced by burning materials, leading to a rapid and intense fire spread.

The significance of identifying this critical temperature lies in fire behavior and safety protocols for firefighters. Knowing that flashover can occur at around 1000 degrees F helps firefighters recognize the risks associated with high-temperature environments and informs their tactics when fighting fires. This knowledge empowers them to make strategic decisions, such as adjusting their tactics when they detect signs of impending flashover, like rapidly increasing temperatures or heavy smoke. Therefore, understanding that flashover typically occurs at this critical temperature is essential for effective firefighting and safety.