Which material classification includes flammable and combustible liquids?

The classification that includes flammable and combustible liquids is Class B. This classification is specifically designed to address materials that pose fire hazards due to their ability to ignite and sustain combustion when exposed to a flame or heat source. Class B materials encompass a wide range of substances, such as gasoline, oil, and various solvents, making it essential for safety professionals to be familiar with their properties and handling requirements.

Understanding the characteristics of Class B materials is vital for ensuring proper storage, usage, and firefighting strategies. Firefighters, for instance, are trained to use specific techniques, such as applying foam agents, when dealing with fires involving flammable liquids, as water may not be effective and can even exacerbate the situation.

Class A, on the other hand, pertains to ordinary combustibles like wood, paper, and plastics, which do not include combustible liquids. Class C deals with electrical fires, while Class D covers combustible metals, thus reinforcing that flammable and combustible liquids are indeed classified under Class B. This distinction is crucial for anyone working in environments where such materials are present, enabling them to implement appropriate safety measures and response actions.