What are the phases of fire?

The phases of fire are crucial for understanding fire behavior and managing firefighting operations. The correct sequence outlined in the choice includes Ignition, Growth/Free Burning, Full Development, and Decay.

In the Ignition phase, the fire begins with the initial spark or heat source that ignites combustible materials. This phase is characterized by minimal flame and heat release as the fire starts to plume.

Next, during the Growth/Free Burning phase, the fire increases in size as combustible materials continue to burn and produce heat, leading to a larger fire. This phase is critical for firefighters as the heat and gas production escalate rapidly, increasing fire danger.

Following this is the Full Development phase, where the fire reaches its peak intensity and the maximum rate of heat release occurs. At this stage, all available fuels are being consumed, and the potential for flashover is heightened, which makes control of the fire especially challenging.

Finally, in the Decay phase, the fire starts to diminish. This can occur when fuel is exhausted, or ventilation is restricted. The intensity of the fire decreases as the heat and flame reduce, leading to an eventual fire extinguishment if no further fuel is available.

Understanding these phases helps firefighters anticipate fire behavior and effectively strategize their response to