What type of extinguishing agent is suitable for Class B fires?

Class B fires involve flammable liquids and gases, such as gasoline, oil, and propane. The appropriate extinguishing agents for these types of fires are those that can effectively suppress the flames without causing harmful reactions or increasing the spread of the fire.

Foam is a suitable extinguishing agent for Class B fires because it creates a blanket over the burning liquid, cutting off the oxygen supply and preventing vapors from igniting. Foam also helps to cool the burning material, which is crucial for extinguishing the fire effectively.

Water, while an effective extinguishing agent for Class A fires involving ordinary combustibles, can be dangerous to use on Class B fires. When water is applied to flammable liquids, it can cause the liquid to spread, thereby exacerbating the fire rather than extinguishing it.

Diatomaceous earth might be used in some contexts for spill control or absorption but is not a primary extinguishing agent for Class B fires.

Carbon Dioxide (CO2) is also effective at suppressing Class B fires since it displaces oxygen and helps cool the flames. However, foam is favored in many scenarios due to its ability to prevent re-ignition and its effectiveness against flaming liquids.

Therefore, foam stands out as the