How to choose fire equipment?

1. To fight Class A fires, that is, solid burning fires, water type, foam, ammonium phosphate dry powder, and haloalkane type fire extinguishers should be used. Class A fires: Refers to solid matter fires. This substance tends to be organic in nature and typically produces scorching embers when burned. Such as wood, cotton, wool, hemp, paper fire, etc.

2. Dry powder, foam, haloalkane, and carbon dioxide type fire extinguishers should be used for Class B fires, that is, liquid fires and fusible solid material fires (it is worth noting here that chemical foam fire extinguishers cannot extinguish Class B polar soluble solvent fires, because chemical foam and When the organic solvent is touched, the foam will be quickly absorbed, so that 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 matter fires. Such as gasoline, kerosene, crude oil, methanol, ethanol, asphalt, etc.

3. Dry powder, haloalkane, and carbon dioxide type fire extinguishers should be used to fight 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. Fighting Class D fires, that is, metal burning fires. As far as my country's situation is concerned, there is no finalized fire extinguisher product. Foreign class D fire extinguishers mainly include powdered graphite fire extinguishers and dry powder fire extinguishers for metal fires. Dry sand or cast iron foam can be used to extinguish the fire if the domestic production of fire extinguishers and fire extinguishing agent beads has not yet been finalized. Class D fire: refers to metal fire. Such as potassium, sodium, magnesium, titanium, aluminum-magnesium alloys, etc.

5. To fight Class E fires, ammonium phosphate dry powder and haloalkane type fire extinguishers should be used. 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., the electrical equipment that cannot be powered off in time or should not be powered off when burning is ignited.

6. Put out Class F fires, that is, fires of cooking objects (animal and vegetable fats) in cooking utensils. Do not use water, foam and water-containing substances when extinguishing fire, and use suffocation fire extinguishing method to isolate oxygen to extinguish the fire.