Come and find out about the selection of fire fighting equipment!
2022-12-12
1. Water type, foam, ammonium phosphate dry powder, haloalkane type fire extinguishers should be used to extinguish Class A fires, that is, solid burning fires. Class A fire: refers to a solid substance fire. This substance tends to be organic in nature and generally produces glowing embers when burned. Such as wood, cotton, wool, linen, paper fires, etc.
2. Dry powder, foam, haloalkane, and carbon dioxide fire extinguishers should be used to extinguish class B liquid fires and meltable solid substance fires (it is worth noting here that chemical foam fire extinguishers cannot extinguish class B polar solvent fires. Home is good because the chemical foam is in contact with the organic solvent, the foam will be absorbed quickly, and the foam will disappear quickly, so that it cannot play the role of fire extinguishing. Alcohols, aldehydes, ketones, ethers, esters, etc. are all polar solvents). Class B fires: Refers to liquid fires and meltable solid substance fires. Such as gasoline, kerosene, crude oil, methanol, ethanol, asphalt, etc.
3. Dry powder, haloalkane, and carbon dioxide fire extinguishers should be used to extinguish Class C fires, that is, gas burning fires. Class C fire: refers to gas fire. Such as coal gas, natural gas, methane, ethane, etc.
4. To put out Class D fires, that is, metal burning fires, as far as the situation in our country is concerned, there is no finalized fire extinguisher product. Class D fire extinguishers abroad mainly include powdered graphite fire extinguishers and dry powder fire extinguishers for metal fires. In the case that the production of fire extinguishers and fire extinguishing agent beads has not been finalized in China, dry sand or cast iron foam can be used to extinguish the fire. Class D fire: Refers to metal fires. Such as potassium, sodium, magnesium, titanium, aluminum-magnesium alloy, etc.
5. Phosphoric acid salt dry powder and haloalkane fire extinguishers should be used to fight Class E fires. Class E fire: refers to the fire of charged objects. Such as generator room, transformer room, power distribution room, instrumentation room and electronic computer room, etc., when burning, electrical equipment that cannot be cut off in time or should not be powered off is a fire that burns with electricity.
6. Fight class F fires, that is, the fires of cooking objects (animal and vegetable fats) in cooking utensils. When extinguishing fire, avoid water, foam and water-containing substances, and use suffocation to isolate oxygen to extinguish the fire.
