For some large shopping malls, their electricity consumption is relatively large. Once the load exceeds the load, it is likely to cause a fire and leakage. Therefore, we must first look at the three fire extinguishing methods. Find out the clear method first, and if this happens, it can be solved in time. Not only that, but everyone must also know the little knowledge of fire fighting, and know some common things.
What are the three methods of extinguishing fire？
cooling method. Spray the extinguishing agent directly on the burning material to reduce the temperature of the burning material to below the ignition point and stop burning. Isolation Act. Remove or isolate the combustible material at and around the ignition source, so that the combustion stops due to the isolation from the combustible material.
Asphyxiation. Prevent air from flowing into the combustion area or dilute the air with non-combustible substances, so that the combustible substances cannot get enough oxygen to extinguish. Interrupt the chemical reaction method. The fire extinguishing agent participates in the combustion reaction process, so that the free radicals generated in the combustion process disappear, and stable molecules or active free radicals are formed, thereby interrupting the chemical reaction of combustion.
Fire fighting tips
ONE. Commonly used fire fighting methods
1. Extinguish the fire with water. Fires such as wood and paper can be put out with water. Splash water directly on combustibles to extinguish flames. Wet combustibles near the ignition point with water to cool them down.
2. Use other tools to put out the fire. Cover the surface of burning objects with SARS, wet quilts, clothes, etc. to isolate them from air and stop burning. At the same time, brooms and clothes can also be used as tools for putting out small fires.
3. Isolation and fire fighting. Remove combustibles near the ignition point to prevent the fire from spreading.
4. Use a fire extinguisher to put out the fire.
TWO. Commonly used fire extinguishers
1. Dry powder fire extinguisher. This type of fire extinguisher is named after the cylinder is filled with dry powder fire extinguishing agent. It is mainly suitable for fighting liquid fires, live equipment fires, especially gas fires, but not for precision instrument fires.
2. Foam fire extinguisher. The fire extinguisher that uses spray foam to extinguish fire is mainly used to extinguish oil fires, such as gasoline, kerosene, vegetable oil, etc. initial fires; it can also be used to extinguish general solid material fires, such as wood, cotton, hemp, bamboo and other fires, as well as aircraft and automobiles. Fire caused by accident; not suitable for fighting live equipment fire and gas fire.
3. Carbon dioxide fire extinguisher. Fire extinguishing with vaporized carbon dioxide gas. It is suitable for extinguishing fires in books and archives, precision instruments and valuable equipment. Because it is not conductive, it can put out live equipment fires.
THREE. When the gas cooker catches fire
1. Immediately close the intake valve and cut off the air source.
2. If the liquefied petroleum gas cylinder catches fire, cover the ignition point with a damp towel or wet foam cloth, and at the same time quickly close the angle valve on the gas cylinder.
3. Prevent burns when closing the angle valve.
4. Do not overturn the gas cylinder during the firefighting process to avoid greater danger.
5. Dry powder fire extinguishing agent can be used to extinguish the fire.
What are the three methods of fire extinguishing? The articles have given you the most detailed introduction, including the cooling method, the suffocation method and the interrupted chemical reaction method. These methods are very simple, we only need to use the methods among them. If you master it well, you can minimize the loss and extinguish the fire source in a short period of time. Not only that, but the article also writes the little knowledge of fire extinguishing for everyone.
