Which suppresses fire effectively in Class Bravo fires?

In Class Bravo fires, which involve flammable liquids such as gasoline, oil, and paints, the suppression of fire is critical to preventing escalation and ensuring safety. Aqueous Film-Forming Foam (AFFF) is particularly effective because it forms a film on the surface of the burning liquid, cutting off oxygen and cooling the fuel, which helps to extinguish the fire. This method not only suppresses flames but also prevents re-ignition.

Carbon Dioxide (CO2) is also effective in suppressing Class Bravo fires as it displaces oxygen, which is essential for combustion. CO2 does not leave a residue and can be used in confined spaces where the use of foam might not be practical.

The combination of AFFF and CO2 is specifically effective because each agent operates on a different principle of fire suppression, providing a comprehensive approach to extinguishing fires in this class. Other potential agents, while useful in different scenarios, are not as effective for Class Bravo fires due to their compositions and the nature of the fire.