Class B fires primarily involve which type of materials?

Class B fires primarily involve combustible liquids, which include a wide range of flammable substances such as gasoline, oil, grease, paints, and solvents. These materials can easily ignite and produce significant flames, making them a distinct category in fire classification. The techniques and extinguishing agents used to combat Class B fires differ from those used for other classes of fires. For instance, foam, dry chemical extinguishers, and carbon dioxide are effective in suppressing the intense heat and flames generated by combustible liquids, whereas water is typically ineffective and can be dangerous if applied to such fires.

Understanding that Class B fires are focused on liquids helps firefighters and emergency responders determine the appropriate strategies and equipment for fire suppression while ensuring safety and effectiveness during their operations.