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).
No, the foam from the fire extinguisher contains aqueous film forming foam (AFFF) and is considered non-poisonous and non-toxic to humans or the …
Foam fire extinguishers and how they are use – HSEWatch
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.
by Nick Klamecki, Author. 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 …
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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 type of foam to fight toxic fire?
PFAS also include two other compounds, Perfluorooctane acid (PFOA) and perfluorooctanesulfonic acid (PFOS) that have been identified in firefighting aqueous film forming foam (AFFF). This specific type of firefighting foam is widely used across the US and has been shown to have links to cancer in those who are exposed to it.
What type of fire extinguisher should you use?
Not to be used on:Flammable liquidsFlammable gasesFlammable metalElectrical firesCooking oil fires
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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