1. Water that cannot be saved by water:

1 Alkali metal cannot be saved with water. Because water and alkaline metals (such as metal potassium, sodium) can make water decomposition and generate hydrogen and emit a lot of heat, it can easily cause an explosion.

2 Carbonized alkali metals, alkali metal hydrides cannot be saved with water. Potassium carbide, sodium carbide, aluminum carbide, and calcium carbide, as well as potassium hydride and magnesium chloride, react chemically with water and emit a large amount of heat, which may cause fire and explosion.

3 Lighter than water and flammable liquids that are insoluble in water, in principle no water can be used to save.

4 molten steel, molten steel can not be saved with water. Because the temperature of molten iron and molten steel is about 1600 °C , hydrogen vapor and oxygen can be decomposed when water vapor is above 1000 °C , causing explosion hazard.

5 Acids (sulfuric acid, nitric acid, and hydrochloric acid) cannot be saved with strong currents. If necessary, they can be saved by spray water.

6 High-voltage electrical equipment fires, in the absence of a well-grounded device or without a cut-off current, cannot normally be saved by water.

2. How to use carbon dioxide fire extinguisher:

Pull out the safety plug first, then press down on the pressure handle (or swirl the valve) and place the nozzle at the root of the fire to extinguish the fire.

Carbon dioxide fire extinguisher precautions: Wear gloves when using, so as not to skin contact with the spray tube and spray hose to prevent frostbite. When a carbon dioxide fire extinguisher is used to extinguish an electrical fire, if the voltage exceeds 600 volts, it should be extinguished after the power is turned off.

3 , the use of dry powder fire extinguisher:

The same as the use of carbon dioxide fire extinguishers, but it should be noted that: dry powder fire extinguisher before use, should turn the fire extinguisher upside down several times, so that the cylinder dry powder loose. When using ABC dry powder fire extinguishers to fight a solid fire, the fire extinguishing nozzle should be aimed at the place where the combustion is most intense, sweeping it from side to side, and the dry powder fire extinguishing agent should be sprayed evenly on the surface of the burning material until the fire is completely extinguished. Due to the cooling effect of the dry powder, fire must be prevented after the fire.

4 , after the household appliances caught fire, the method of fighting:

1 Immediately shut down, dial down the power plug or pull down the main gate. If only electric sparks are found, the fire will self-extinguish after the power is turned off.

2 If the wire insulation and the electrical enclosure and other combustible materials catch fire, use a wet quilt or other covering to seal the fire.

3 Do not use water to prevent it from causing damage to the TV's tube.

4 Never use the power supply without repair to avoid electric shock and fire accidents.

5 , computer fire rescue method:

If the computer catches fire, even if the camera is turned off or even the plug is unplugged, the components inside the camera will still be hot, flames will be produced and gas will be produced. The fluorescent screen and picture tube may also explode. When the computer starts to smoke or catch fire , Immediately unplug the plug or turn off the main switch, and then cover the computer with a wet carpet or a quilt, etc. This will not only prevent the spread of smoke, but also block the glass fragments of the screen. Do not splash water on the fire-fighting computer, even if the computer has been turned off, because the sudden drop in temperature can cause the hot cathode-ray tube to burst. In addition, there is still residual current in the computer. Water splashing may cause electric shock. Do not lift the cover to watch. When the fire is extinguished, the computer must be accessible from the side or behind to prevent the explosion of the tube.

6. To prevent fires occurring at home must be done:

1 Do not pull the power cord.

2 Don't throw cigarette butts.

3 Do not lie in bed and smoke.

4 Do not read books in the mosquito net.

5 Do not incinerate sundries and mosquito coils should take effective fire prevention measures.

6 Do not store flammable or explosive materials.

7 Do not use high-power electrical appliances such as heat fast, electric stoves, air conditioners, etc. Do not use electrical blankets, inferior electrical appliances, etc. that may cause fire.

8 Do not use alcohol stoves, liquefier cookers to cook on fire.

9 VIPs go off. Smell the smell of wire and rubber, report it promptly and take measures.

10 lamps should not be near pillows and bedding.

7. Do not open doors and windows casually in the event of a fire:

Due to the tightness of air and air in the room and the lack of air in the room, the fire is developing slowly. Once the doors and windows are opened, fresh air influxes rapidly and the fire develops rapidly. At the same time, a large amount of smoke influxes, which can easily lead to poisoning and suffocation. And died. In addition, due to the convection of air, the flames will be pulled out. Therefore, in the event of a fire, doors and windows cannot be opened.

8 , Fire escape methods:

In general, the methods of fire escape are:

1Using climbing fire engines, two ladders are used for escape;

2 Escape through building passages or in-building facilities ;

3 homemade equipment escape;

4 Find evacuation shelters to escape;

5 rescue each other;

6 Use nearby fire-fighting equipment or other equipment to escape while fighting.

9. The right fire extinguishing method on the fire:

Once the body is on fire, you should first take off your clothes and extinguish the fire; or roll over on the ground and suffocate the fire. But don't scroll too fast and don't run. If there are nearby water sources such as pools, ponds, etc., you can quickly jump into the water, or take water in time to extinguish the body. However, when the body is burned, care should be taken not to jump into the sewage to prevent infection.

10. No evacuation by ordinary elevators in the event of a fire:

The reasons why ordinary elevators cannot be evacuated on a fire site are as follows: First, after a fire occurs, it is often easy to cut off power and cause the elevator to “stuck”, which makes it difficult for rescue work and affects timely evacuation. The second is that elevators pass directly to all floors of the building. Smoke from the fire floor can easily cause a “chimney effect” when it enters the lift channel. People will be smothered with smoke and gas and suffocate at any time in the elevator.

11. Self-rescue method of fire escape:

a . After a fire, do not delay precious escapes for clothing and money. Evacuate from safe passages, exits, and fire escapes as soon as possible; do not blindly smash or use the elevator to escape;

b , away from the fire, do not stand upright smoke when walking, should try to use low posture walking or walking forward, cover your nose and mouth with a wet towel, so as not to be smoke suffocation;

c . When the stairs have caught fire, but they have not yet been blown and the fire is not very violent, they can be quickly washed down by upstairs with clothes or sheets soaked in water. When the stairs have been blown and the fire is very fierce, ropes can be used or the sheets can be torn into strips. One end is tied to a solid door or window or other heavy object, and then slides down the rope or cloth. )

d . When all kinds of escape routes are cut off, they should be returned to their homes, take measures to prevent smoke and fire, close the doors and windows, water the doors and windows, and use wet towels to cover their noses and noses to ensure personal protection. , waving bright things out to the outside (flashing a flashlight at night) and sending a distress signal;

e . Once the clothes have been burned in the escape, the fireman can fall and roll on the spot, smash the flames on his body, or help the others to extinguish the flames, and remember not to run.

12. How to escape in a theater fire:

According to different fire sites, choose the corresponding escape method:

1 When the stage is in danger of fire, try to get close to the end of the auditorium and grasp the opportunity to escape.

2 When the auditorium fires, use the exits of the stage, auditorium and auditorium to escape.

3 When the auditorium fires, use the exits of the stage and auditorium to escape.

4 No matter where the fire broke out, the upstairs spectators could be evacuated from the evacuation gate through the stairs.

In addition, local materials can be used to make use of curtains and other items to create lifesaving equipment and open evacuation routes.

13, in the dance halls, karaoke OK hall fire escape method:

1 Keep calm and clarify the direction of safe exit.

2 choose a variety of ways to escape: If the dance hall is located on the floor of the floor, you can directly jump out of the window; if you are on the second and third floors, you can catch the window sill to slide down and let your feet fall first; if the dance hall is located in a high-rise building In underground buildings, the escape of a high-rise building or a fire escape method of an underground building should be considered.

3 If the ballroom escape passage is blocked by fire and heavy smoke, and when the auxiliary lifesaving facilities are not found at the moment, the trapped person will only temporarily flee to the weaker section of the fire and send out a signal for assistance outside the window to wait for firefighters to rescue him.

4 Care should be taken to prevent poisoning in escape. If you use wet clothing to cover your mouth and nostrils, if you can't find water, you can use a drink instead. In an escape operation, you should use a low profile walking or crawling to reduce the harm of smoke on the human body.

14. Escape in the bus fire:

When the engine catches fire, get off the door after the driver opens the door. If the fire is in the middle of the car, after the driver opens the door, the passengers get in order from the two doors. If the flame is small but closes the door, the passenger can cover his head with clothing and rush down from the door. If the door line is burned out and cannot be opened, passengers should pry open the nearest window. Due to the ever-changing conditions of the fire scene, it is necessary to take actions according to the actual situation.

The information in this article comes from the Internet and was reorganized and edited by China Rescue Equipment Network.