Class A Foam Uses

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. Forexpan is a synthetic fire fighting foam concentrate specially formulated for class a applications such as forestry and wildland fire control, structural fires, and tyre and paper fires.


Instagram photo by Birgit KoopsenBernstein Jun 3, 2016

Seattle uses a product that takes all the guesswork out of using foam, novacool uef (universal extinguishing foam).

Class a foam uses. The balanced chemical system in forexpan reduces the surface tension of water to increase the penetrating power into burning class a materials. If a fire st arts to attack offices or the structure of buildings, a water extinguisher is an ideal solution. Their use of class a foam, quite simply, makes good sense for them.

Class a foam makes water more effective by reflecting heat, insulating fuel, increasing heat absorption, clinging to vertical surfaces and penetrating deep into burning fuel. Class b foam, on the other hand, repels carbon. For any wildland or structural brigade that has to bring its water to the scene, and has to establish water tanker shuttles, using class a foam can easily increase operational efficiency of fighting the fire.

Uses of class a foam different uses for water treated with a class a foam concentrate are: Wd881 class a foam enhances a firefighters ability to fight fire fast. A specially formulated synthetic fire fighting foam concentrate designed for class a applications such as forestry and wildland fire control, structural fires, and tyre and paper fires.

The balanced chemical system in forexpan s reduces the surface tension of water to increase the penetrating power into burning class a. Class a foam concentrate does not contain pfas chemicals including, but not limited to, pfos or pfoa. tire fires dumpster fires deep seated fires in landfills or hay

Class a foam concentrate is used for fire fighting wildland and structural fires which consist of ordinary combustible materials, such as paper, cloth, wood, coal and rubber. The water/foam blanket smothers the fire by not allowing air (oxygen) to access the fuel and lowers the fuel temperature to below its ignition point. Afff stands for aqueous film forming foam is also very effective in fire of class a and b fire.

Class a fire usually occurs in places where solids are the common type of fuel. Never mix class a and class b foam concentrates qualifications and uses The purpose of class a concentrate is to allow water to create a foam blanket on a burning class a fuel and keep it there where plain water beads up and runs off.

Class a foams are often intended for use at very low concentration of 0,1 to 1%, and are formulated using environmentally favourable raw materials. Afff /foam works in two ways, firstly it provides a cooling effect to the fire to slow down the fire and other is it sealed the surface and make the fire starved of fuel and break fire triangle by eliminating fuel from the triangle and extinguish the fire. The type of foam these systems use is;

Class a foams are blend of surfactants that enable strong wetting and foaming properties. use for class b fires. Also, foam, dry powder, and wet chemical fire extinguishers are convenient for this fire class.

Foam fire extinguishers aqueous film forming foam (afff) designed for protection of industrial and commercial premises. Class a foam is for use against class a fires such as paper, rubber, textiles and wood. Instead aim at a nearby vertical surface allowing the foam to build up and smother the flames.

Triclass fire extinguishers with an afff additive are effective on class a and b fires by cooling the burning embers of carbonaceous materials and sealing the surface of burning liquids. Class a foam concentrate is a synthetic chemical additive that reduces the surface tension of water so it can penetrate combustible fuel surfaces. Class b foams should not be used on class a fires.

The reason is that, class a foam, when properly deployed, allows the fire to be extinguished more quickly and with far less water than would be required if foam was not used. When mixed with water it creates a foam solution that is more effective than plain water for flame knockdown and fuel cooling when used for a fire attack. The surfactants used must produce foam in concentration of less than 1%.

It helps the water penetrate the burning material to quickly suppress the fire and prevent rekindles. Fluorinated surfactants are used in class b foam concentrates and are necessary to form a film on flammable liquid fires. But, it is highly dangerous to use near electrical equipment.

Class a fuel type fire; However, by adding a small amount of class a foam concentrate to the water, it becomes 3 to 5 times more efficient. use for class a fires.

Several departments have attempted to adapt class a foam equipment that was


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