What is the term for the fire phase during which the sprinkler system is establishing control over the fire?

What is the term for the fire phase during which the sprinkler system is establishing control over the fire?

• A. Active Stage
• B. Pre-ignition Stage
• C. Growth Stage
• D. Recovery Stage

Answer: (A)

During the phase when the sprinkler system is actively applying water and the fire is being brought under control, the fire is in the Active Stage. This is the period where suppression actions are actively reducing the heat release rate, cooling fuels, and limiting flame spread, so the fire stops growing and moves toward extinguishment. Pre-ignition happens before any flame exists. The Growth Stage describes a fire that is still increasing in size without being under control. The Recovery Stage refers to late-stage cooling and return to normal conditions after the fire is under control.

During the phase when the sprinkler system is actively applying water and the fire is being brought under control, the fire is in the Active Stage. This is the period where suppression actions are actively reducing the heat release rate, cooling fuels, and limiting flame spread, so the fire stops growing and moves toward extinguishment.

Pre-ignition happens before any flame exists. The Growth Stage describes a fire that is still increasing in size without being under control. The Recovery Stage refers to late-stage cooling and return to normal conditions after the fire is under control.