Wet chemical fire extinguishers are recommended to extinguish class A and class F fires. Wet chemical fire extinguishers are highly recommended as a safety precaution within commercial kitchens where it is more common for a fire to ignite, involving cooking oils and fats.
When should you use a wet chemical fire extinguisher?
Wet chemical extinguishers are used for cooking oil fires, or more specifically deep fat fryer fires. This type of fire is different from other categories because water, foam, powder and even CO2 extinguishers will actually aggravate an oil fire rather than extinguish it.
What does a wet chemical extinguisher remove?
Wet Chemical extinguishes Class A Fires by cooling the burning material and removing the heat from the combustion triangle.
What is a chemical fire extinguisher used for?
Dry chemical fire extinguishers extinguish the fire primarily by interrupting the chemical reaction of the fire triangle. The most widely used type of fire extinguisher is the multipurpose dry chemical that is effective on Class A, B, and C fires.
What is a wet chemical?
Wet chemicals contain a specifically formulated extinguishant that reacts with oil to form a soapy substance through a process called saponification. When applied to burning liquids, the saponification process cools and emulsifies, extinguishing the flame and sealing the surface to prevent reignition.
What is the chemical in a dry chemical fire extinguisher?
Dry chemical fire extinguishers use firefighting agents such as monoammonium phosphate, sodium bicarbonate, and potassium bicarbonate. These leave behind a corrosive powder, so it’s important to clean up dry chemical fire extinguisher residue quickly, especially if it has come in contact with metal surfaces.
Which fire extinguisher is used for flammable liquid fires?
Class B. Class B fires involve flammable and combustible liquids such as gasoline, alcohol, oil-based paints, lacquers. Therefore, extinguishers with a B rating are designed to extinguish fires involving flammable and combustible liquids.
What is the difference between dry chemical and dry powder?
There is no difference. These are two different terms for the same thing. A dry powder is compatible with foam; a dry chemical is not. A dry powder is harmful to the environment; a dry chemical is not.
What is wet fire extinguisher?
Wet chemical is the only type of extinguisher to be used on kitchen (F-Class) fires. These extinguishers work by instigating a chemical reaction with fats and oils. This reaction reduces the temperature and eliminates the heat, causing flames extinguishment.