What are the basic measures to extinguish fires, and what are the four basic measures to extinguish

1. Control combustibles. Combustibles are the material basis of the combustion process, so the use of combustible substances should be cautious. When selecting materials, try to replace combustible materials with non-combustible or non-combustible materials, such as building houses with cement instead of wood, and dipping combustibles with fireproof paint to improve fire resistance; For the plant with fire and high risk of fire, the method of ventilation or ventilation is used to reduce the concentration of combustible gas, vapor and dust in the air; All items that can interact with each other should be stored separately, etc.

2. Isolate the air. The production process using flammable and explosive substances should be carried out in a sealed facility; For production with abnormal danger, it can be filled with inert gas protection; Isolate the air to store some dangerous chemicals, such as sodium metal in kerosene, yellow phosphorus in water, carbon disulfide in water, etc.

3. Remove the source of fire. For example, take measures such as isolating the fire source, controlling the temperature, grounding, lightning protection, installing explosion-proof lights, and blocking sunlight to prevent combustibles from encountering open flames or rising temperatures.

Fourth, stop the spread of fire and waves. In order to prevent the spread of fire and waves, it is necessary to prevent the formation of new combustion conditions, so as to prevent the expansion of the fire and reduce the fire loss. The specific measures are:

Install flame arresters and safety water seals on combustible gas pipelines; Wear fire caps on the smoke and exhaust systems of locomotives, ships, automobiles, and bulldozers; Installation of explosion-proof membrane and safety valve on pressure vessel equipment; Leave fire spacing between buildings, build firewalls, etc.

The basic method of extinguishing the fire is to take some measures to destroy the basic conditions that must be met for combustion according to the state of combustion of the first substance. The following study has sorted out the four basic methods of fire extinguishing for you, I hope you like it.

Four common methods of extinguishing fires.

All fire extinguishing measures are aimed at destroying the combustion conditions that have been generated. According to the principle of material combustion and the practical experience of fighting fire, there are four basic methods of fire extinguishing from the principle of fire extinguishing

1. Isolation and fire extinguishing method.

It is to isolate or remove the combustible material at or around the source of the fire, and the combustion will stop due to the lack of combustibles. For example, the combustible, flammable, explosive and combustible materials near the fire source are removed; Close the valves of combustible gas and liquid pipelines to reduce and prevent combustible substances from entering the combustion zone; Try to block the liquid that has flowed;Demolition of flammable buildings adjacent to the fire source, etc.

2. Suffocation fire extinguishing method.

It is to prevent the air from flowing into the combustion zone or dilute the air with non-combustible substances, so that the combustion substances do not get enough oxygen and are extinguished. If the combustible material is covered with non-combustible or non-combustible material;Equipment for filling vessels with water vapor or inert gas;Closed holes in buildings, equipment, etc.

3. Cooling fire extinguishing method.

It is to spray the fire extinguishing agent directly on the combustible material to increase the heat dissipation, reduce the temperature of the burning material below the ignition point, and stop the combustionAlternatively, the extinguishing agent is sprayed on an object near the source of the fire to protect it from the radiant heat of the flame and avoid the formation of a new flame.

Fourth, suppress the fire extinguishing method.

It is to make the fire extinguishing agent participate in the combustion reaction process;The free radicals generated during the combustion process disappear, and stable molecules or low-activity free radicals are formed, so that the combustion reaction is stopped due to the lack of free radicals.

Commonly used fire extinguishing materials.

1) Water. Water is the most commonly used and most convenient fire extinguishing agent. It is usually used and works in liquid, fog and vapor forms, mainly to reduce the temperature of the fire and isolate the air. Its fire-fighting facilities include fire hydrants, rain showers, rain fog, water buckets, sprayers, water vapor nozzles and fire trucks.

2) Prohibited places where water is used to extinguish fires.

1. Water-resistant substances, substances that emit heat when exposed to water, such as potassium, sodium, lead powder, calcium carbide, etc. These substances can react with water to form combustible gases to form ** mixtures;

2. Molten iron, molten steel and hot objects. It can make the water evaporate quickly and cause a strong **;

3. Fire of flammable and flammable liquids. It makes the flammable liquid float on the surface of the water, expanding the burning area;

4. Electrical fire. Water can conduct electricity, which is easy to cause electric shock and short circuit accidents;

5. Fire of precision instruments, valuable cultural relics and archives. Extinguishing it with water will destroy it.

Did you know that fire extinguishing is a very important emergency treatment measure, which can effectively control the spread of fire and protect the safety of people and property. In the event of a fire, how to properly extinguish the fire has become a crucial issue.

1.Water extinguishes fires

Water fire extinguishing is currently the most common fire extinguishing method, especially suitable for ordinary material fires. Water has good heat dissipation properties, being able to quickly absorb the heat of a substance and drop the temperature below the ignition point. When using, it is necessary to spray water on the fire source until the fire source is completely extinguished.

2.Carbon dioxide extinguishing fires

CO2 fire extinguishing agent is a colorless, odorless, non-flammable, non-conductive fire extinguishing agent with excellent fire extinguishing performance. CO2 fire extinguishers are often used in places that are susceptible to water damage, such as metals and precision equipment. It works by rapidly releasing a large amount of CO2 at the scene of a fire, reducing the oxygen concentration and temperature, and generating a high concentration of CO2 to extinguish the fire.

3.Foam extinguishes the fire

Foam fire extinguishing is the use of foam to isolate the fire source from oxygen, thereby effectively preventing the spread of fire. Foam retains its density and viscosity for a long time, quickly covers the surface of objects to form a fire barrier, and inhibits the ingress of oxygen. Foam extinguishing is suitable for ignition sources such as burning liquids, because foam has a liquid film and a loose foam structure.

4.Dry powder extinguishing the fire

Dry chemical fire extinguishing agent is a very common fire extinguishing agent and one of the most common fire extinguishers at present. Dry chemical fire extinguishers are lightweight, easy to store, and simple to operate, making them suitable for many types of fires. Although dry powder is a very effective firefighting tool, it should be noted that its use is very close to the source of the fire and should not be used by fumigators or isolated people.

Isolation of the air method: Combustion requires sufficient oxygen, and the isolation of air is to isolate oxygen, and the combustion is stopped. Use fire-fighting tools to directly extinguish the fire, so that the combustibles are temporarily isolated from the air and suffocated.

Cooling and extinguishing fire: When the temperature of the combustible material is lower than the ignition point, the fire can be extinguished and the fire can be eliminated. The cooling method is to use the method of cooling to stop the fire from burning.

Isolation and fire extinguishing: Isolate the combustibles from the ignition source or oxygen of the chain mu, and the combustion reaction will be automatically stopped. In the event of a fire, close the relevant valves and cut off the passage of combustible gases and liquids to the fire area.

1. Air isolation method: sufficient oxygen is needed for combustion, and the purpose of isolating air is to isolate oxygen, and combustion is stopped. Use the fire extinguishing tool to directly extinguish the fire, so that the combustible materials are temporarily isolated from the air and suffocated.

2. Cooling and fire extinguishing: the temperature of combustibles is lower than the ignition point, and the fire can be extinguished and the fire can be eliminated. The cooling method is to use the method of cooling to stop the fire from burning.

3. Isolation and fire extinguishing: Isolate the combustibles from the ignition source or oxygen, and the combustion reaction will be automatically stopped. In the event of a fire, close the relevant valves and cut off the passage of combustible gases and liquids to the fire area.

4. Chemical inhibition fire extinguishing: the use of fire extinguishing agent reacts with free radicals of the intermediate of the chain reaction, so that the chain reaction of combustion is interrupted and the combustion cannot be sustained.

The basic measures to extinguish the fire are as follows:

1. Isolation method: Isolate or remove the burning place or object from the surrounding combustibles, and the combustion will stop due to the lack of combustibles.

In practical use, such as removing combustible, improvised combustion, and combustible items close to the fire source, and moving the burning objects to a safe place;

Turn off the valves of power supply, combustible gas, and liquid pipelines, and stop and reduce the entry of combustible substances into the combustion area; Demolition of flammable buildings adjacent to burning materials, etc.

2. Suffocation method: prevent the air from flowing into the combustion area or dilute the air with non-combustible substances, so that the combustible materials cannot get enough oxygen and extinguish.

In practical use, such as covering the combustible material with non-combustible or incombustible substances such as asbestos blankets, wet sacks, wet quilts, wet towels, yellow sand, foam, etc.;

equipment for filling containers with inert gases such as water vapor or carbon dioxide; Closed buildings and equipment, doors and windows, holes, etc., have a better fire extinguishing effect.

3. Cooling method: the fire extinguishing agent is sprayed directly on the combustible material to reduce the temperature of the combustion. Combustion stops when the temperature of the combustible material is below the ignition point of the combustible substance.

Or spray the extinguishing agent on the combustible near the fire source to reduce its temperature and prevent the effects of radiant heat**. The cooling method is the main method of extinguishing fires, which mainly uses water and carbon dioxide to cool and cool down.

4. Inhibition method: This method is to spray a chemical fire extinguishing agent (1211) containing fluorine and bromine to the flame, so that the extinguisher can participate in the combustion reaction, so that the free radical chain reaction is interrupted to achieve the purpose of extinguishing the fire.

The best position for extinguishing the fire extinguisher:

The best place to extinguish the fire with a fire extinguisher is upwind or crosswind, because if a person inhales too much carbon dioxide, it will cause death due to lack of oxygen.

A fire extinguisher is a portable fire extinguishing tool. Chemicals are placed inside the fire extinguisher to extinguish the fire.

Fire extinguishers are one of the common fire prevention facilities, which are stored in public places or places where fires may occur, and care must be taken when using them to avoid counterproductive effects and dangers.

Dry powder fire extinguishers are suitable for extinguishing fires in petroleum, petroleum products, paints, organic solvents and electrical equipment, and can inhibit the chain reaction of combustion and extinguish fires, but cannot extinguish fires with light metal combustion.

Pay attention to the fire extinguisher should be placed in a good place, dry and ventilated, and check whether the dry powder is agglomerated twice a year, and replace it in time if there is a clumping. <>

Dear, hello, I'm glad to answer for you The answer is as follows: the measures are 1, isolation method 2, suffocation method 3, cooling method 4, chemical inhibition fire extinguishing method sprays the chemical fire extinguishing agent into the combustion zone to participate in the chemical reaction of trillion combustion, so that the combustion stops. The family slip fire extinguishing agent used in the state referred to by this fire extinguishing method includes Chenglong brand high-efficiency water system fire extinguisher.

Summary. 1. Isolation method.

The basic method of extinguishing fire is the isolation method. In the event of a fire, remove all the combustibles near the burning items in time to prevent the spread of the fire and avoid the fire from becoming too large, such as when the forest is on fire, the trees near the fire source will be cut down to create a separation zone to protect most of the trees.

2. Asphyxiation method.

The asphyxiation method is the basic method of extinguishing fires. The combustion of fire requires oxygen, and when it is ignited, the concentration of oxygen is reduced, which will reduce the fire, and inert gases such as carbon dioxide, nitrogen, and water vapor will be used in real life to reduce the air concentration, so as to achieve the purpose of extinguishing the fire.

3. Cooling method.

The cooling method is the basic method of extinguishing fires. When using the cooling method to extinguish a fire, carbon dioxide or clean water is used to reduce the temperature of the surface of the burning material below the ignition point, and the flame will be extinguished, but the flame that has just been extinguished may rekindle, so when using the cooling method, it is necessary to continue watering for a period of time after the flame is extinguished.

4. Inhibition method.

The inhibition method is one of the basic methods of fire extinguishing, mainly using the inhibiting fire extinguishing agent to spray the flame, so that the free radicals in the flame form stable molecules, so as to extinguish the flame, such as the common dry powder fire extinguishing agent and 1211 fire extinguishing agent.

What are the four basic measures to extinguish a fire?

Hello, I am helping you to inquire about the relevant information and will reply to you immediately.

1. The basic method of fire extinguishing by isolation method is isolation method. In the event of a fire, remove all the combustibles near the burning items in time to prevent the spread of the fire and avoid the fire from becoming too big, for example, when the forest is on fire, the trees near the fire source will be cut down to create a separation zone to save most of the trees. 2. Suffocation method: The suffocation method is the basic method of fire extinguishing.

In real life, inert gases such as carbon dioxide, nitrogen, and water vapor will be used to reduce the positive concentration of air and liquid, so as to achieve the purpose of extinguishing fires. 3. Cooling methodThe cooling method is the basic method of fire extinguishing. When using the cooling method to extinguish a fire, the temperature of the surface of the burning object is reduced to below the ignition point by using carbon dioxide or clean water, and the flame will be extinguished, but the flame that has just been extinguished may be re-ignited, so when using the cooling method, it is necessary to continue watering for a period of time after the flame has been extinguished.

4. Inhibition method Inhibition method is one of the basic methods of fire extinguishing, mainly using the inhibiting fire extinguishing agent to spray the flame, so that the free radicals in the flame form stable molecules, so that the flame can be extinguished, such as common dry powder fire extinguishing agent and 1211 fire extinguishing agent.