How can a fire extinguisher class be defined for flammable liquids?

The classification of fire extinguishers is based on the type of fire they are designed to combat. For flammable liquids, the appropriate classification is Class B. Class B fire extinguishers are specifically designed to handle fires that involve flammable liquids such as gasoline, oil, and grease.

When it comes to extinguishing Class B fires, these extinguishers typically use foam, dry chemical, carbon dioxide, or other agents that effectively suffocate the flames or interrupt the chemical reaction that fuels the fire. The use of water, which could be an option in Class A fires (involving ordinary combustibles like wood and paper), is not suitable for Class B fires as it could spread the flammable liquid and exacerbate the situation.

Other classes serve different types of fire scenarios: Class K is tailored for cooking oils and fats, Class C is for electrical fires, and Class A is for ordinary combustibles. Therefore, identifying Class B as the appropriate classification for flammable liquids aligns with the principles of fire safety and extinguishing techniques.