Which class of fires involves combustible cooking fuels such as oils and fats?

The class of fires that involves combustible cooking fuels such as oils and fats is indeed Class B. Class B fires are characterized by flammable liquids and gases, which include cooking oils, grease, gasoline, and solvents. These types of fires require specific extinguishing agents, such as foam or dry chemical extinguishers, that can effectively interrupt the combustion process of the burning liquid while preventing re-ignition.

Understanding the classification of fires is crucial for safety, particularly in settings like kitchens where cooking oils can easily ignite. Class A fires, in contrast, typically involve solid combustibles like wood, paper, and cloth, while Class C fires involve energized electrical equipment. Class D fires refer to combustible metals. Each class requires different firefighting techniques and knowledge, which is why accurately identifying the class of fire is essential for effective firefighting and safety measures.