Final Answer:
Aqueous Film Forming Foam (AFFF) Extinguishers are intended for Class B fires, which involve flammable liquids and gases.
Step-by-step explanation:
AFFF extinguishers are specifically designed to tackle fires fueled by flammable liquids such as gasoline, oil, diesel, and other hydrocarbons. The unique composition of AFFF includes water, a hydrocarbon surfactant, and fluorocarbon surfactant.
When discharged, AFFF forms a film on the surface of the flammable liquid, creating a barrier that suppresses the release of flammable vapors and prevents reignition.
Class B fires can rapidly spread if not controlled effectively, making AFFF extinguishers valuable in environments where flammable liquids are present, such as industrial facilities, garages, and laboratories. The ability of AFFF to create a smothering film on the liquid surface distinguishes it as an effective choice for suppressing Class B fires. It is crucial to match the type of fire extinguisher to the specific fire hazard to ensure the most efficient and safe fire suppression. Users should be familiar with the class of fire for which AFFF extinguishers are suitable to respond promptly and effectively to potential incidents involving flammable liquids.