Fire extinguishers apply an agent that will cool burning heat, smother fuel or remove oxygen so the fire cannot continue to burn. A portable fire extinguisher can quickly control a small fire if applied by an individual properly trained.
Fire Extinguishers
Fire extinguishers apply an agent that will cool burning heat, smother fuel or remove oxygen so the fire cannot continue to burn. A portable fire extinguisher can quickly control a small fire if applied by an individual properly trained.
FOAM EXTINGUISHERS
puts out fires by covering the flames with a thick blanket of foam. In turn, this deprives the fire of the air supply, thus undermining its capacity to release flammable vapour s. When directed towards flammable liquids, the foam allows the liquid to drain from it before forming an aqueous film.
DRY CHEMICAL EXTINGUSHERS
put out fire by coating the fuel with a thin layer of dust, separating the fuel from the oxygen in the air. The powder also works to interrupt the chemical reaction of fire, so these extinguishers are extremely effective at putting out fire.
Co2 EXTINGUISHERS
Carbon Dioxide extinguishers are filled with non-flammable carbon dioxide gas under extreme pressure. You can recognize a CO2 extinguisher by its hard horn and lack of pressure gauge. The pressure in the cylinder is so great that when you use one of these extinguishers, bits of dry ice may shoot out the horn.
WET CHEMICAL EXTINGUISHER
The 'chemical' element of wet chemical fire extinguishers is potassium. Potassium salts are sprayed out as a fine mist (gently, so as not to spread the burning oil or fat), and these react to create a soapy film on the surface of the substance on fire.
DCP FIRE EXTINGUISHER:
DCP extinguishers are sodium bicarbonate and potassium bicarbonate. DCP extinguishers puts out fire by. coating the fuel surface with chemical powder. This separates the fuel from the. oxygen in the air and prevent vapor formation