Foam fire extinguisher uses

How does a foam fire extinguisher work? Do not aim the spray directly into the liquid as this will drive the foam beneath. What fire extinguisher is best? It is recommended to use a foam fire extinguisher for class A and class B fires.

Fires that are categorised as class A involve flammable solids such as rubber, woo paper and textile materials, where as class B fires involve flammable liquids such as kerosene or petrol. Foam fire extinguishers are.

See all full list on epactnetwork. Like water extinguishers , they can be used on class A fires. These are fires involving liquids, like petrol and paints.

The use of class A foam on a class B fire may yield unexpected , as class A foams are not designed to contain the explosive vapors produced by flammable liquids. Free Shipping Available. The water component of this extinguisher removes the heat of the fire, while the foam component removes the oxygen. Works For: Class A fires only. Identified by a cream label, these types of extinguisher should only be used on Class A and B and electrical fires if the extinguisher has been tested to 35kV (dielectric test) but never on a chip pan or fat fire.

Operation of a foam extinguisher differs depending on which type of fire it is being used for.

Before attempting to tackle a fire with an extinguishers you need to make sure that the extinguisher is safe to use. Water fire extinguishers are suitable for use in environments containing solid combustible materials such as woo paper and textiles. The Types And Colours Of Fire Extinguishers And Their Uses 1. Water (White) Water is usually the first thing you think of for putting out fires. Powder Extinguishers: 4. Class B - Suitable for flammable liquids.

The layer of foam applied by these extinguishers helps to prevent re-ignition after the fire has been extinguished. There are two types of foam fire extinguishers, wheeled (nitrogen cylinder) and portable foam (stored pressure). COextinguishers work by smothering the fire and cutting off the supply of air.

Carbon dioxide extinguishers do not leave any residue, unlike a foam extinguisher. Over the years foam fire extinguishers have evolved into a more efficient type of fire extinguisher. The original foam extinguisher was once filled with a thick and smelly substance based on animal protein, these days a more advanced solution of aqueous film foaming foam (AFFF) is used. A Class A fire is a solid fire , such as paper, wood or plastic.

It is not recommended to use foam on electrical fires. It acts by flowing over the liquid fuel oil surface and isolating the fire from the air, also prevents re-ignition due to the foam stability. Usually the foams are of i.