What fires cannot be extinguished with water?

1.Electrical appliances, fire appliances. In the event of a fire, the first thing to do is to cut off the power supply, and if the power cannot be cut off, it must not be extinguished with water or foam, because both water and foam can conduct electricity.

Extinguish with carbon dioxide, a dry chemical fire extinguisher or dry sand, and keep a distance of at least 2 metres from electrical equipment and electrical wiring.

2.Oil pan fire. When the oil pot is **, never pour it with water.

Because the water meets the hot oil, it will form a "fryer", which will make the oil fire splash everywhere. The way to extinguish the fire is to quickly pour the cut cold vegetables into the pot along the edges, and the fire will be extinguished automatically. Another method is to cover the oil pan with a pot lid or a large wet cloth that can cover the oil pan, so that the burning oil fire can not contact the air and suffocate due to lack of oxygen.

3.Gasoline fires. Gasoline is less dense than water, if the gasoline catches fire and is extinguished with water, the dense water sinks, the light gasoline floats up, the gasoline floating on the water will still continue to burn, and the gasoline will spread everywhere with the water, expanding the burning area, endangering the safety of other goods and surrounding buildings.

In case of gasoline fire, fire extinguishing tools such as foam, carbon dioxide and dry powder fire extinguishers should be used immediately to extinguish the fire, and it is strictly forbidden to extinguish it with water.

4.Paint fires. Paint should never be poured with water. Foam, dry powder or 1211 fire extinguishing appliances or sand should be used for extinguishing.

All kinds of fires occur from time to time in life, and if the extinguishing method is not done properly, it may usher in a greater disaster, so as ordinary people, we need to know more about fire rescue. The following two fires cannot be extinguished with water, otherwise the results will become more and more severe!

Fires caused by electric shock

Many people think that as long as there is fire, water can be extinguished, but this is just a one-sided idea, water can indeed extinguish fires, but water will become the reason for more and more fires to a certain extent. Water is electrically conductive, so in many cases we should not touch live objects with metal or moisture, as I think this will result in us being electrocuted ourselves. Therefore, in any public place or in your own home, if the fire problem is caused by electric shock, then the most important solution is not to pour water directly into the fire, the first way is to escape from the local environment, and call for help, and cut off the circuit if the conditions permit, so as to be able to extinguish the fire more effectively.

When burning vegetable oil

This is very common in life, but perhaps in modern life, there are fewer people who actually use firewood to cook, and it is more difficult for them to see this kind of scene, but not everyone in life is so rich that they no longer use firewood to cook. In many rural areas, it is still necessary to use firewood to cook, many people will find that the pot is very hot, put oil on it, and want to add water but will be very afraid, because you will often see the scene of fire or increase! This principle is just because the water makes the oil float up from the bottom of the pot, so that it comes into contact with the flames that burst out of the stove, the oil is a flammable liquid, which will make the flames bigger and bigger, and if the surrounding environment is not very good, it may ignite the firewood in the surrounding environment, causing more serious fires.

Fire and water are not easily provoked, human power in front of nature seems so small, so you must remember, do not use water to extinguish the fire caused by electricity, oil caused by fire, otherwise the living area will expand.

First of all, electrical appliances cannot be extinguished with water, and oil pans cannot be extinguished with water, otherwise it will cause **, which is very dangerous. It also includes gasoline fires, paint**, fires of high-voltage electrical installations, hydrochloric acid fires, nitric acid fires, sulfuric acid fires and many more.

Oil pans**, flowing liquids**, wires**, gasoline**, paint** fires cannot be extinguished with water, otherwise they will cause more serious disasters.

Gasoline**, high-voltage electricity**, paint**, oil pan**, electrical appliances**, these are all things that cannot be extinguished with water and will make the problem even more serious.

The power supply, oil pan, and liquid liquid ** can not be extinguished with water, and the power can be cut off to isolate the air.

The fire situation is relatively serious, the fire temperature is very high, the fire spreads very quickly, the height of the fire is very high, and the fire situation can no longer be controlled, and these situations cannot be extinguished with water.

Electrical fires, oil pan fires, gasoline**, paint fires, high voltage electrical installations**.

There are six types of fires that cannot be extinguished with water1, live fires2, grease and alcohol fires. 3. Gas combustion fire 4, metal fire 5, combustible dust, such as flour, aluminum powder, sugar powder, coal powder and other fires 6, storage of a large amount of sulfuric acidConcentrated nitric acid, hydrochloric acid and other items of the place fire.

1. Electrified fires cannot be directly extinguished with water. Because it may cause electric shock or great damage to electrical equipment, dry powder fire extinguishers such as ammonium phosphate and carbon dioxide fire extinguishers should be used.

Fire suppression. 2. Oil and alcohol fires. Because oil and alcohol are lighter than water, the former will float on the surface of the water when splashed with water, increasing the burning area and thus increasing losses.

To extinguish grease and alcohol fires, the air isolation method should be used to quickly cover the burning object with an object to achieve the effect of isolating the air to extinguish the fire. 3. Dry powder and carbon dioxide fire extinguishers should generally be used for fire fighting with gas combustion. 4. Metal fires are generally extinguished by dry sand or soil covering.

5. Combustible dust, such as flour, aluminum powder, powdered sugar, pulverized coal and other fires, cannot be extinguished with water to prevent the formation of high-quality mixtures. 6. When a fire occurs in a place where a large amount of sulfuric acid, concentrated nitric acid, hydrochloric acid and other items are stored, it cannot be extinguished with water to prevent more violent combustion caused by exothermy.

After a fire, many people's first reaction is to extinguish the fire with water, but in fact, this idea is wrong. In the face of sudden fire, the type of fire should be analyzed calmly and symptomatically extinguished.

Fires that can be extinguished with water are combustible dust.

Analysis: This question assesses the application range of water fire extinguishing agent. Fires with densities less than water and insoluble flammable liquids, such as gasoline, kerosene, diesel, etc., cannot be extinguished with water, and large-capacity storage tanks such as benzene, alcohols, ethers, ketones, esters and acrylonitrile can be extinguished with water, and the water will sink under the liquid, which will cause detonation after being heated, forming splashes and overflows of flammable liquids, so that the fire expands.

Metal potassium, sodium, calcium carbide and other combustibles are produced when exposed to water, and sand should not be used to extinguish fires. The strong water flow can make the acid splash, and after the flow out, it encounters combustible substances, which is in danger of causing **, so the fire caused by sulfuric acid, hydrochloric acid and nitric acid cannot be impacted by the water flow.

In a fire where the density is less than that of water or a flammable liquid that is insoluble in water, it cannot be extinguished with water. For example, when gasoline, kerosene, diesel, benzene, alcohols, ethers, esters, etc. are burned, water cannot be used to extinguish the fire, otherwise a large amount of flammable liquid will flow with the water, which is easy to cause the spread of fire.

The principle of fire extinguishing: remove combustibles or isolate combustibles from other items Isolate oxygen or air Lower the temperature below the ignition point of combustibles; Oil cannot be extinguished with water, because the density of oil is smaller than that of water, and the burning oil will float on the surface of the water and cannot be isolated from the air Charged fires cannot be extinguished directly with water.

In the event of an electrical fire, the first thing to do is to cut off the power supply. If the power cannot be cut off, it is important not to extinguish it with water or foam fire extinguishers, because both water and foam can conduct electricity.

Correct approach: Use carbon dioxide, dry chemical fire extinguishers or dry sand to extinguish, and keep a certain safety distance from live equipment.

Oils and fats**.

Because oil is lighter than water, extinguishing a fire with water, the former will float on the water surface and continue to burn, and at the same time, the oil will increase the burning area with the flow of water, and the water will also form a "fryer" phenomenon when it encounters hot oil, making the oil fire splash everywhere.

Correct approach: To extinguish grease fires, you can use the air isolation method to quickly cover the burning object with an object to achieve the effect of isolating the air to extinguish the fire, or use a foam fire extinguisher, carbon dioxide fire extinguisher and dry powder fire extinguisher to extinguish the fire.

Gas burning fires.

Dry powder and carbon dioxide fire extinguishers should generally be used for fire fighting of gas combustion, such as liquefied gas tank combustion, which can be washed and cooled with water to prevent gas from being heated.

Metal-based fires.

Metal fires such as titanium, potassium, sodium, magnesium, aluminum-magnesium alloys, alkyl bases, liquid metal and other fires are prohibited from using water, carbon dioxide and foam fire extinguishers.

Correct approach: It can be extinguished with dry sand or soil covering.

Chemical fires that react violently when exposed to water.

For example, when a fire occurs in sulfuric acid, concentrated nitric acid, hydrochloric acid and other items that will react violently when exposed to water, it cannot be extinguished with water to prevent more violent combustion caused by exothermy.

For extinguishing fires.

The importance of water speaks for itself!

But blindly taking water to fight can be counterproductive.

Turns water into an "accelerant" for fires

What kind of fire can water extinguish. Flame. Building. Dry wood forest. But. To gasoline fuel oil is. Individual income tax. Those who can't get tired must have. This uses a fire extinguisher to extinguish the oil in the fire.

Fires that are not caused by electrical appliances or liquids can be extinguished.

The type of curtains in your house that are on fire.

Water can extinguish five types of fires, the first is liquid fires, such as gasoline, diesel, etc.;

The second is gas fires, such as liquefied gas;

the third is metal fires, such as potassium and sodium;

Fourth, some chemical fires, such as phosphorus, are burned when exposed to water;

The fifth is a live fire, such as a live wire on fire, mainly for fear of electric shock.