What should be the discharge duration goal?

• A. It should wet only the top layer.
• B. It should be as short as possible.
• C. It should be sufficient to thoroughly coat the surface.
• D. It should fill the entire kitchen.

Answer: (C)

Discharge duration should be long enough to thoroughly coat the surface with the extinguishing agent. The goal is full, even coverage so the chemical can act across all areas where the fire and fuel are present, cooling and suppressing the flames and reducing the chance of reflash. Wetting only the top layer won’t stop heat and embedded residues from reigniting, and discharging as short as possible means you won’t reach all required areas. Filling the entire kitchen with agent is unnecessary and wasteful; the aim is thorough coverage of the involved surfaces, not total area saturation.