Class K fires involve which materials?

Class K fires involve which materials?

• A. Flammable cooking media
• B. Flammable liquids
• C. Electrical
• D. Combustible metals

Answer: (A)

Class K fires involve cooking media such as vegetable oils and animal fats used in commercial kitchens. These fuels burn at very high temperatures and have properties that make them behave differently from common flammable liquids. Water can cause these hot oils to splatter and spread the fire, and ordinary extinguishing methods may be ineffective. The suppression approach for Class K uses wet chemical extinguishers that release a potassium acetate compound; this chemically saponifies fats to form a soapy layer on the surface, cooling the oil and creating a barrier between the fuel and the flame. Other fire types are classified differently: flammable liquids refer to fuels like gasoline or solvents, electrical fires involve energized equipment, and combustible metals involve metals such as magnesium.

Class K fires involve cooking media such as vegetable oils and animal fats used in commercial kitchens. These fuels burn at very high temperatures and have properties that make them behave differently from common flammable liquids. Water can cause these hot oils to splatter and spread the fire, and ordinary extinguishing methods may be ineffective. The suppression approach for Class K uses wet chemical extinguishers that release a potassium acetate compound; this chemically saponifies fats to form a soapy layer on the surface, cooling the oil and creating a barrier between the fuel and the flame. Other fire types are classified differently: flammable liquids refer to fuels like gasoline or solvents, electrical fires involve energized equipment, and combustible metals involve metals such as magnesium.