Which type of fires are classified as Class B fires?

Class B fires are specifically related to flammable liquids and gases. This includes substances such as gasoline, oil, alcohol, and solvents, which can ignite and produce flames that are difficult to extinguish using water. The reason flammable liquids are classified under Class B is due to their unique properties; they can spread rapidly and produce vapors that can ignite even at a distance from the liquid source.

To effectively combat Class B fires, it is essential to use appropriate extinguishing agents such as foam, dry chemical powders, or carbon dioxide. These agents work by either removing the heat element of the combustion triangle, suffocating the fire by displacing oxygen, or creating a barrier between the fuel and the flames.

Understanding the nature of Class B fires and the best methods to extinguish them is critical for fire safety and response, ensuring firefighters approach such situations using the correct techniques and equipment to prevent further hazards.