Which class fire is associated with cooking oils and fats?

Which class fire is associated with cooking oils and fats?

• A. Class A
• B. Class B
• C. Class C
• D. Class K

Answer: (D)

Fires involving cooking oils and fats are categorized as Class K because the fuel is a cooking fat found in kitchens. This class uses a wet chemical extinguishing agent (such as potassium acetate) that saponifies fats, turning the oil into a soapy layer that cools and separates the fuel from heat, helping to prevent re-ignition. Water should not be used on grease fires because it can cause the oil to splash and spread the flames. Other classes handle different hazards: ordinary combustibles like wood and paper fall under Class A, flammable liquids under Class B, and electrical fires under Class C, which require non-conductive extinguishing methods. In commercial kitchens, Class K extinguishers are specifically designed for the unique properties of fats and oils, providing the safest and most effective control for those fires.

Fires involving cooking oils and fats are categorized as Class K because the fuel is a cooking fat found in kitchens. This class uses a wet chemical extinguishing agent (such as potassium acetate) that saponifies fats, turning the oil into a soapy layer that cools and separates the fuel from heat, helping to prevent re-ignition. Water should not be used on grease fires because it can cause the oil to splash and spread the flames. Other classes handle different hazards: ordinary combustibles like wood and paper fall under Class A, flammable liquids under Class B, and electrical fires under Class C, which require non-conductive extinguishing methods. In commercial kitchens, Class K extinguishers are specifically designed for the unique properties of fats and oils, providing the safest and most effective control for those fires.