True or False? The methods for using Class B foam on Class B fires differ from those used for Class A foam on Class A fires.

The statement is false because the methods for using Class B foam on Class B fires are indeed different from those used for Class A foam on Class A fires. Class A fires, which typically involve ordinary combustibles such as wood, paper, and some plastics, require the use of foam that focuses on forming a blanket to suppress the fire by cooling and smothering. In contrast, Class B fires involve flammable liquids and gases, and Class B foam is designed to create a surface film that separates the fuel from the air, effectively suppressing the flammable vapors and preventing ignition.

Different types of foam are formulated to tackle the specific characteristics of the fuels involved in each class of fire. For Class B fires, techniques like the "rain down" method or "bank down" method may be employed to ensure proper coverage and effectiveness, while Class A foams focus on different application techniques to soak into the materials involved.

Understanding the distinctions in fire behavior and foam functionality is crucial for effective firefighting, which emphasizes the necessity for separate methodologies in foam application for the two fire classes.