A widely accepted temperature range for flashover is approximately:

A widely accepted temperature range for flashover is approximately:

• A. 400-900
• B. 900-1200
• C. 1500-1900
• D. 1200-1500

Answer: (D)

Flashover happens when the heat feedback inside a compartment becomes so intense that all available fuels ignite almost simultaneously, turning the room into a fully involved fire in seconds. The temperature level at which this rapid transition occurs is very high—about 650 to 815 degrees Celsius, which is roughly 1200 to 1500 degrees Fahrenheit. This high heat environment is what makes flashover so dangerous and why firefighters study this threshold closely. Some sources express the range in Celsius, but in many firefighter training contexts the familiar range to remember is 1200–1500°F, signaling the intense radiation and flame spread present during flashover.

Flashover happens when the heat feedback inside a compartment becomes so intense that all available fuels ignite almost simultaneously, turning the room into a fully involved fire in seconds. The temperature level at which this rapid transition occurs is very high—about 650 to 815 degrees Celsius, which is roughly 1200 to 1500 degrees Fahrenheit. This high heat environment is what makes flashover so dangerous and why firefighters study this threshold closely. Some sources express the range in Celsius, but in many firefighter training contexts the familiar range to remember is 1200–1500°F, signaling the intense radiation and flame spread present during flashover.