What is a key consideration for fire extinguishing agents like AFFF?

The suitability of Aqueous Film Forming Foam (AFFF) for flammable liquids is based on its unique properties that allow it to suppress fires effectively in such scenarios. AFFF is specifically engineered to create a film that adheres to flammable liquid surfaces, preventing fuel from vaporizing and thus reducing the chances of ignition. This mechanism is particularly crucial in scenarios involving liquid hydrocarbon fuels, such as gasoline, oil, and solvents, where traditional extinguishing agents may not be as effective.

AFFF not only suppresses the flames but also cools the flammable liquid, further mitigating the risk of re-ignition. Its design functionality directly addresses the specific challenges posed by flammable liquids, making it a preferred extinguishing agent in many firefighting operations involving this type of hazard.