In addition to extinguishing flammable liquid fires, what is another use for Class B foams during hazardous material incidents?

Class B foams are specifically designed to combat flammable liquid fires by creating a blanket over the fuel surface, which not only extinguishes the fire but also serves to suppress the vapor production of un-ignited fuels. This is crucial during a hazardous material incident because it helps prevent the ignition of flammable vapors that can escape from spilled liquids. By reducing vapor release, the foam limits the risk of fire spreading and mitigates explosion hazards, thereby enhancing overall safety for first responders and the surrounding area.

The capability of Class B foams to suppress vapors is particularly important in managing incidents involving hazardous materials, as it provides a dual function: controlling active fires and preventing future ignitions by managing vapor phases. This application is essential for minimizing risks and ensuring a safer environment during emergency response operations involving flammable liquids.