In the early stage of the fire, the fire was relatively small. If the fire extinguishing equipment can be used properly, the fire can be eliminated at the initial stage, and small fires will not cause a major disaster, thereby avoiding major losses.
There are many types of fire extinguishers that are usually used to put out the fire at the beginning. When used, the nature of the fire burning substance must be used, otherwise it will be counterproductive, and sometimes not only will not extinguish the fire, but also an explosion. Fire-fighting equipment indicates that because the fire-extinguishing agents contained in various fire-extinguishing agents have different effects on different fires, it is necessary to master the fire-extinguishing effect of fire extinguishers when extinguishing different fires.
According to different types of fires, there are four types of fires:
Class A fires are those involving solid combustible materials, including wood, cloth, paper, rubber, and plastic.
Class B fires are flammable, combustible liquid, flammable gas, and grease fires.
Class C fires are fires on live electrical equipment.
Class D fires are fires of some combustible metals such as magnesium, sodium, potassium and their alloys.
General fire extinguishers are marked with the type and rating of the fire. For example, A, B, etc., the user can immediately identify which type of fire the fire extinguisher is suitable for. Currently commonly used fire extinguishers include foam fire extinguishers of various specifications, dry powder fire extinguishers of various specifications, carbon dioxide fire extinguishers and halogenated (1211) fire extinguishers. Foam fire extinguishers can generally extinguish Class A and B fires. When an electrical fire occurs and the power is cut off, foam fire extinguishers can also be used to extinguish fires. Dry powder fire extinguishers and carbon dioxide fire extinguishers are used to extinguish Class B and C fires. Combustible metal fires can be extinguished with Class D dry powder fire extinguishing agents. Haloalkane (1211) fire extinguisher is mainly used to extinguish fires of flammable liquids, charged electrical equipment and precision instruments, and machine rooms. The fire extinguishing agent contained in this fire extinguisher is non-corrosive, leaves no trace after fire extinguishing, and has a good effect.
Generally, the fire extinguishing time of the portable fire extinguisher with the medicine inside is within one minute, and the actual effective fire extinguishing time is only 10 to 20 seconds. In actual use, the method of use must be properly grasped, otherwise not only the fire will not be extinguished, but it will also be delayed It's time to extinguish the fire.
After a fire, using a fire extinguisher to extinguish the initial fire in a timely manner is a powerful measure to prevent the fire from spreading, expanding and causing greater losses. At the same time, once a fire alarm is discovered, the fire department should be alerted immediately. Never expect the fire extinguisher to extinguish the fire without alerting the fire brigade, because the fire extinguisher has a limited area and ability to fight, and can only adapt to the initial fire. After the fire, it generally spreads relatively quickly, delaying the alarm time and delaying the fire fighter, which will inevitably cause greater losses.
Your current location:
