What kind of fires does a Class B fire extinguisher target?

A Class B fire extinguisher is specifically designed to target fires involving flammable or combustible liquids. This category includes materials such as gasoline, oil, grease, and other substances that can ignite and burn intensely. The extinguishing agents in Class B extinguishers are formulated to suppress flames caused by these types of liquid materials, often utilizing foam, dry chemical, or carbon dioxide that can effectively smother or disrupt the fire's chemical reaction.

Understanding the focus of Class B extinguishers is crucial for safety, as using the wrong type of extinguisher on a fire can lead to dangerous situations or exacerbation of the fire. For example, using a water-based extinguisher on a grease fire could cause the flames to spread. Therefore, it’s essential for firefighters and individuals to recognize the correct applications for different classes of fire extinguishers to manage and combat fires effectively.