How does a wet chemical fire extinguisher work

Wet chemical fire extinguisher colour. Turn off the source of heat if safe to do so. Hold the lance at arm’s length, well above the fire with its nozzle at least 1 Metre away from the fire. Holding the lance still, discharge so that the spraying wet chemical falls gently onto the surface of the …

How wet chemical extinguishers work: The ‘chemical’ element of wet chemical fire extinguishers is potassium. Potassium salts are sprayed out as a fine mist (gently, so as not to spread the burning oil or fat), and these react to create a soapy film on the surface of the substance on fire.

Wet chemical fire extinguisher: How it works, colour

As a result, the wet chemical has been found to be at the top of the list of the most effective fire extinguisher of fires that result from deep fat fryers. The wet chemicals mainly work by cooling and emulsifying when it’s applied to burning oils and fats. When this happens, the surface is sealed, and the fire is prevented from reigniting.

Also Check: What types of fires are wet chemical extinguishers used for

How does a wet chemical extinguisher work?

Instead of covering the burning oil and aggravating it to pop or smoke, the wet chemical extinguisher discharges a layer of a soap like substance. This is designed to form a barrier that prevents the fire from spreading and cool the oil.

How do wet chemicals extinguish a Class F fire?

In extinguishing Class F fires, wet chemicals work by covering the flammable liquid using a blanket of foam. This foam blanket then forms a crust on top of the fat or cooking oil. As a result, the oxygen supply to the other elements of combustion is cut off. This hinders the process of combustion from continuing.

Also Check: What is in wet chemical fire extinguishers

How do wet chemicals work to stop fires?

The wet chemicals mainly work by cooling and emulsifying when it’s applied to burning oils and fats. When this happens, the surface is sealed, and the fire is prevented from reigniting.

What are the pros and cons of wet chemical fire extinguishers?

Pros and Cons of wet chemical fire extinguishers: Pros: the only fire extinguisher suitable for use with cooking fat and oil fires. Cons: can produce toxic fumes areas should be ventilated if a wet chemical extinguisher has been used. Who needs wet chemical fire extinguishers?:

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