What type of fire is a Class B fire?

• A. Fires involving ordinary combustibles
• B. Fires involving flammable liquids
• C. Electrical fires
• D. Fires involving metals

Answer: (B)

A Class B fire is specifically categorized as a fire that involves flammable liquids and gases. These types of materials include substances such as gasoline, oil, alcohol, and other hydrocarbons, which can ignite and spread rapidly, often creating significant hazards in firefighting situations. Understanding this classification is crucial for fire safety, as it dictates the type of fire extinguisher and tactics needed to effectively combat this fire type.

This definition is rooted in the National Fire Protection Association (NFPA) standards, which classify fires into various classes based on their fuel sources. Class B fires differ greatly from Class A fires, which involve ordinary combustibles like wood, paper, and cloth, and Class C fires, which involve energized electrical equipment. Likewise, Class D fires are specific to combustible metals, such as magnesium or sodium, which require distinct handling due to their unique burning characteristics.

Being aware of these distinctions helps firefighters and safety professionals prepare appropriate response strategies and select the right extinguishing agents to mitigate fire risks effectively.