Can Class B foam be used on structural fires?

Class B foam is specifically formulated for use on flammable liquid fires, such as those involving gasoline, oils, and solvents. It is designed to suppress and control fires that originate from these materials by creating a blanket over the fuel, which helps to prevent the flames from reaching the surface and reduces the release of flammable vapors.

On the other hand, structural fires typically involve materials such as wood, drywall, or other construction materials that do not fall into the category of flammable liquids. The use of Class B foam on structural fires is not recommended because it may not be effective for those types of combustibles, and the improper application could hinder firefighting efforts. Instead, Class A foam, which is designed specifically for combating ordinary combustibles in structural fires, is preferred.

This distinction between the types of foam and their appropriate applications is crucial for effective firefighting and safety. Therefore, utilizing Class B foam on structural fires is not advised, making the response that Class B foam should not be used in these scenarios accurate.