One of the most effective fire extinguishers is water. They should only be used on Class A fires, such as those involving paper, wood, fabrics, furniture, and other similar materials.Do you want to learn more? Visit Fire extinguishers near me
A water fire extinguisher is solid red in colour and comes with a hose and nozzle to direct a stream of water at the fire’s base. Water fire extinguishers should not be used near live electricity cables because water conducts electricity. Water extinguishers should be maintained next to a CO2 extinguisher in order to protect your building against electrical fires. Extinguishers work by soaking (cooling) the materials in the fire and extinguishing the flames.
AFFF foam, like water, works on Class A flames, but it can also put out Class B / flammable liquid fires. When sprayed over a fire, AFFF foam smothers and extinguishes the flames, then seals in any harmful vapours beneath the foam’s surface. As the water in the foam evaporates, it enters porous materials and cools the fire. They can be used near but not on live electrical equipment because the foam extinguisher is non-conductive and has passed the BS EN3 35,000V dielectric test. The cream colour coded panel on foam fire extinguishers distinguishes them.
On electrical fires, carbon dioxide (CO2) fire extinguishers are safe to use. Unlike foam or powder extinguishers, Co2 gas is non-conductive and does not leave a residue that will affect the future performance of electrical equipment. These types of fire extinguishers can also be used to put out Class B flames (flammable liquids). A black panel on the extinguisher body and a horn that should be pointed at the fire but not retained in case of a freeze burn identify carbon dioxide fire extinguishers. As an added safety feature, certain newer versions of CO2 fire extinguishers have frost-free horns. The most common extinguisher combination for effective firefighting is a water or foam extinguisher combined with a CO2 extinguisher.
Dry powder fire extinguishers are the most versatile sort of fire extinguisher, as they can put out flammable solids, liquids, gases, and electrical fires. Powder fire extinguishers are frequently advised for use on automobiles and in the home, however despite their versatility, they are not recommended for use in confined spaces or on sensitive electrical equipment if other, more appropriate forms of extinguishers are available. Powder fire extinguishers have a blue panel and work by smothering the flames and preventing it from re-igniting.