What types of fire extinguishers should be used for all types of fire?
Now on the market of dry powder fire extinguishing agent is generally divided into BC powder and ABC powder two categories, BCD dry powder extinguishing class D fire are rare now production; new appear on the market the new product categories: superfine powder extinguishing agent and its performance should also be included in the ABC, although the ultra fine powder fire extinguishing efficiency is much greater than the ordinary ABC powder but, the fire type and ordinary ABC powder extinguishing agent, can destroy the ABC fire and charged fire equipment.1, BC dry powder extinguishing agent: class BC dry powder can extinguish BC fire. Applicable to flammable, flammable liquid, gas and live equipment of the initial fire, is not suitable for solid materials fire. Therefore, in the power distribution room, kitchen, computer room and other flammable liquids, gases, fire and live fire place, can be equipped with BC type dry powder fire extinguishing agent. But these places are often not pure liquid and gas fires; therefore, such places are mostly equipped with ABC dry powder fire extinguishing agent.2, ABC dry powder extinguishing agent: this type of extinguishing agent can save solid, liquid, gas and live equipment fire, the most widely used. Can be used in all kinds of public occasions, offices, hotels, restaurants, automobiles, ships and even families, but not for fighting metal materials fire. At present, there are many shall be equipped with ABC powder extinguishing agent places but erroneously equipped with BC dry powder fire extinguishers; for example some restaurants are all equipped with BC powder, and from the fire occurred in the case of a comprehensive research on the hotel fire is burning of flammable solids, at this moment if BC dry powder fire extinguisher, effect no significant, even may delay the timing of fire, resulting in greater economic losses
Fire types are divided into the following 5 categories according to the fire materials and their combustion characteristics:Class a fire: carbon solid fuel such as wood, cotton, wool, linen, paper and other burning fires;Class B fire: nail, B, C liquid such as gasoline, kerosene, diesel oil, methanol, ether, acetone and other burning fires;Class C fires: flammable gases such as gas, natural gas, methane, propane, acetylene, hydrogen, etc.;Category D fires: flammable metals such as potassium, sodium, magnesium, titanium, zirconium, lithium, aluminum, magnesium alloys, etc.;
Many types of fire extinguishers, according to the movement can be divided into: portable and transportable; according to the driving power source of fire extinguishing agent can be divided into: gas cylinders, pressure storage, chemical reaction type, according to the filling of the fire extinguishing agent is also divided into: foam, dry powder, carbon dioxide, and alkyl halides acid-base, water etc..ABC, BC, BCD three fire extinguishers are corresponding to the following 5 types of fire numbers.
