In the event of a fire involving an MC-306/DOT-406 carrying ethanol-blended gasoline, what should be used to suppress the fire?

The use of Class B foam-alcohol resistant concentrate is the appropriate choice for suppressing a fire involving an MC-306/DOT-406 carrying ethanol-blended gasoline. Ethanol-blended gasoline is a flammable liquid, and fires involving such materials require specialized firefighting techniques. Class B foam is specifically designed to smother flammable liquid fires and prevent the release of flammable vapors, effectively providing a barrier to oxygen and cooling the fire.

Class B foam-alcohol resistant concentrates are tailored for use on polar solvents like alcohols and fuels that contain them. These foams form a film on the surface of the burning liquid, helping to suppress ignition and vapor release more effectively than standard Class B foams, which may not adequately address the properties of ethanol-blended gasoline.

While water can be helpful in cooling a fire and controlling heat, it is not effective for flammable liquid fires, as it may spread the fire and create additional hazards. Class A foam is primarily for ordinary combustibles and wouldn't be effective against a flammable liquid fire. Dry chemical fire extinguishers can suppress flammable liquid fires, but they do not provide the consistent suppression and vapor sealing effects that Class B foam-alcohol resistant concentrates offer.

Using the appropriate foam concentrate