For an oil-based fire, which type of extinguisher is appropriate?

For an oil-based fire, the appropriate type of extinguisher is one designed for flammable liquids, such as those classified as Class B extinguishers. Class B extinguishers specifically target fires that originate from flammable liquids like oil, gasoline, grease, and other similar substances. They work by smothering the fire, cooling the burning fuel, and separating the fuel from the oxygen needed to sustain the combustion process.

It is important to use the correct type of extinguisher for a fire to avoid exacerbating the situation. For example, using water, which is suited for Class A fires (ordinary combustibles like wood and paper), on an oil-based fire can spread the flames due to the fact that oil and water do not mix. This demonstrates the critical importance of understanding fire classifications and the appropriate responses to different types of fire hazards, particularly in environments where flammable liquids are present.