One of them is a foam fire extinguisher. Foam fire extinguishers differ from other fire extinguishers because they ensure that the inflamed surfaces remain cool long after the fire has been put out. While this …
Aim the fire extinguisher nozzle at a vertical surface near the fire, do not spray directly at the fire as this could cause the burning liquid to splash and the fire to spread to surrounding areas. Foam extinguishers build up foam on the surface of the burning liquid, cutting off the oxygen supply to the fire and cooling the hot liquid. Ensure all of the fire has been extinguished; the …
Foam fire extinguishers – colours and uses explained
Foam fire extinguishers work in 2 ways. Firstly, they are mainly water-based and so have the same cooling effect as water extinguishers, putting the fire out by lowering the temperature. Secondly, they contain ‘Aqueous Film Forming Foam’ (this is why they are also known as AFFF foam extinguishers).
Consequently, what’s in a foam fire extinguisher? Foam (Cream) Foam fire extinguishers are red with a cream label. Foam extinguishers primarily work by smothering fires and starving the fire of the oxygen it needs to burn. Like water extinguishers, they can be used on class A fires. Foam extinguishers are also used on class B fires.
People Also Ask what is the foam in a fire extinguisher
Why is foam used to extinguish a chemical fire?
The water sinks under the greaseThe water boilsThe boiling water turns to steamSteam takes up more space than waterThe steam explodes out of the burning grease
How does a foam fire extinguisher put out a fire?
Uses of foam fire extinguisher:Fires involving flammable solids, such as paper, wood, and textiles (‘class A’ fires)Fires involving some flammable liquids, such as petrol, diesel, and paint (‘class B’ fires)Fires involving electrical appliances IF the extinguisher has passed the 35kv conductivity test
What are foam fire extinguishers used for?
Wet Chemical fire extinguishers should be used by business such as:Commercial kitchensRestaurantsCanteens
What is the main chemical in fire extinguishers?
What are the different types of fire extinguisher?Water extinguishers. There are two main types of water fire extinguisher: standard water extinguishers and water mist extinguishers.Foam extinguishers. Foam fire extinguishers are primarily water-based, and contain a foaming agent that smothers the fire.Powder extinguishers. …Carbon dioxide (CO2) extinguishers. …Wet chemical extinguishers. …
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Fire Safety Training – How to Use a FOAM Fire Extinguisher Video Answer
Reference:
https://www.usfa.fema.gov/
https://en.wikipedia.org/wiki/Fire_extinguisher