Which fire class is designated for cooking oils and greases?

The designated fire class for cooking oils and greases is Class K. Class K fires involve combustible cooking media, primarily in commercial kitchens, where oils and fats are used for frying. This classification is essential because Class K fires require specific extinguishing agents that are effective in safely combating fires fueled by oils and greases without making the situation worse.

Fire extinguishers meant for Class K fires contain special wet chemical agents, which are designed to cool and smother the flames while preventing the oil from re-igniting. This unique classification arose from the increased risk of fires in kitchens, particularly in restaurant settings, and recognizing the need for appropriate fire safety measures.

The other classes listed do not cover cooking oils and greases. Class B pertains to flammable liquids such as gasoline and paint, Class C is for electrical fires, and Class D is used for combustible metals. Therefore, Class K is the specific designation recognized for handling fire hazards related to cooking oils and greases.