How foam fire extinguishers works: Foam fire extinguishers work in 2 ways. They are mainly water-based and so have the same cooling effect as water extinguishers, putting the fire out by lowering the temperature. They contain ‘Aqueous Film Forming Foam’ (this is why they are also known as AFFF foam extinguishers).
Foam suppression systems extinguish fire by separating the fuel from the oxygen. In more technical terms, these systems are used to “cool 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).
To extinguish a fire, firefighting foam acts in two phases: Separation effect: the foam blanket suppresses oxygen supply to the flammable material and prevents combustible evaporation. Cooling effect: a lot of energy is required to …
People Also Ask how foam extinguish fire
How do foam fire extinguishers stop flammable liquid fires?
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.
How do I identify a foam fire extinguisher?
How to identify a foam fire extinguisher: • CREAM coloured label printed on the body stating ‘Foam’ • Should be identified by an extinguisher ID sign fixed nearby – ‘Foam Extinguisher’ Sizes of foam fire extinguisher available:
How does foam fire suppression work?
The “foam” in foam fire suppression systems is an extinguishing agent that can extinguish flammable or combustible liquid by cooling and separating the ignition source from the surface. The foam suppresses and smothers fire and vapors alike. It can also prevent reignition. It is also known as “firefighting foam.”
What is the difference between water and foam fire extinguishers?
They are mainly water-based and so have the same cooling effect as water extinguishers, putting the fire out by lowering the temperature. They contain ‘Aqueous Film Forming Foam’ (this is why they are also known as AFFF foam extinguishers).
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West Metro Fire Rescue: Firefighting with foam Video Answer
Reference:
https://www.usfa.fema.gov/
https://en.wikipedia.org/wiki/Fire_extinguisher