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).
Foam fire extinguishers are one of the most common types of fire extinguisher, and are generally used for fires involving flammable solids and liquids. Foam fire extinguishers create a cooling blanket effect, smothering burning materials and preventing re-ignition. It is not for use on chip pan fires unless they are described specifically as class F extinguishers.
Fire Extinguisher Foam – What Is That Stuff? – …
There are several different kinds of fire extinguishers, and each is used to put out a certain type of fire. One of them is a foam fire extinguisher. Foam fire extinguishers differ from other fire extinguishers because they …
A foam fire extinguisher is a type of fire extinguisher that uses foam instead of dry chemicals to put out a fire. When you hear the term “foam,” it might conjure images of soft, bubbly formations at bath time, but the foam in a fire extinguisher is actually a concentrated liquid or gas designed to stop the spread of burning materials by smothering them.
People Also Ask what does foam fire extinguisher put out
How do foam extinguishers put out fires?
To understand how foam extinguishers put out fires, we need to know how fires burn in the first place. There are four elements to a burning flame: heat, fuel, air or oxygen, and a chemical chain reaction. Interfering with any of these elements can stop the fire.
Is a foam fire extinguisher good for general use?
Summary: A foam fire extinguisher is a good for general use, suitable for the majority of business premises. What is a foam fire extinguisher used for?
What is a liquid fire extinguisher and how does it work?
It also allows foam fire extinguishers to put out flammable liquid fires, by creating a barrier between the liquid’s surface and the flames.
How does a AFFF fire extinguisher work?
AFFF works by smothering the fire and sealing in the flammable vapours. This prevents the fire re-igniting. It also allows foam fire extinguishers to put out flammable liquid fires, by creating a barrier between the liquid’s surface and the flames.
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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