What is the best time to extinguish a primary fire urgently, thank you

Generally within 15 minutes, this is the best time to extinguish the fire. Beyond this time, the fire will be difficult to extinguish.

The following introduces some methods for extinguishing the initial fire according to the principle of combustion: (1) Cooling fire extinguishing method The fire extinguishing agent is sprayed directly on the combustible, so that the temperature of the combustible material is reduced to below the spontaneous ignition point, so that the combustion is stopped. The main function of water to extinguish a fire is to cool and extinguish the fire.

General substances** can be cooled with water to extinguish the fire. On the fire ground, in addition to directly extinguishing the fire by cooling method, the combustible substance that has not yet burned is often cooled with water to prevent it from reaching the ignition point and catching fire; It can also be used to cool building components, production units or containers, etc., with water to prevent them from being deformed by heat or **. (2) Isolation and fire extinguishing method Combustibles are one of the most important conditions in the combustion conditions, and if the combustibles are isolated from the ignition source or air, then the combustion reaction will be automatically stopped.

Such as: the method of spraying fire extinguishing agent, the combustible material is isolated from the air and heat, the foam produced by the foam fire extinguishing agent is covered on the surface of the burning liquid or solid, and the combustible material is separated from the flame and air while the cooling effect, etc., all belong to the isolation fire extinguishing method. There are many specific measures to isolate and extinguish fires.

For example, moving flammable and explosive substances near the source of fire to a safe place; Close the valves on the equipment or pipelines to prevent the flow of combustible gases and liquids into the combustion zone; Eliminate combustible gases and liquids in production equipment and containers, and block and evacuate combustible liquids or diffused combustible gases; Demolition of flammable structures adjacent to the source of fire, and creation of a space to prevent the spread of fire, etc. (3) Suffocation fire extinguishing method.

Combustible substances cannot be burned in the absence of air or with less than 14% oxygen in the air. The so-called suffocation method is to cut off the air supply to the combustible material. Therefore, it is suitable to take appropriate measures to prevent air from entering the combustion zone, or to dilute the oxygen content in the air with inert gases, so that the combustion substances are extinguished due to lack of oxygen or without oxygen, and are suitable for extinguishing fires in closed spaces, production equipment and containers.

When the suffocation method is used to extinguish the fire on the fire ground, non-combustible or incombustible materials such as asbestos quilt, wet sack, wet quilt, sand, foam can be used to cover the burning or seal the hole; Fill the combustion area with water vapor and inert gases (such as carbon dioxide, nitrogen, etc.); The original doors on the building and the components on the production, storage and transportation equipment were used to enclose the combustion area and prevent air from entering. In addition, if other rescue methods are not possible and conditions permit, the method of water inundation (perfusion) can be used to extinguish.

When it just smokes, it is immediately destroyed. Or withdraw immediately, life is the most important thing.

Hello answer, very happy to answer your question, in the initial stage of the fire, is the most favorable period to fight the fire, because at this time the concentration of smoke has not yet formed, effective damage to the human body, if you calmly respond, you can turn off the circuit, use a wet blanket or quilt to cover the fire, so as to achieve the control of the fire source, and wait until it spreads too late.

Therefore, the initial stage of a fire is the most favorable period for fighting a fire, and there is nothing wrong with this statement, I wish you happiness.

The initial stage of fire is the most favorable time to extinguish the fire, and if the fire can be detected and controlled in time at the initial stage of the fire, the fire damage will be greatly reduced.

When there is a leakage of combustible gas from the stove or pipes and equipment, the gas source should be turned off immediately, all fire sources should be extinguished, and doors and windows should be opened for ventilation at the same time.

Fire Precautions.

It is important to note that fires that cannot be extinguished immediately should first control the spread and expansion of the fire, and then extinguish the fire in one fell swoop. For example, after a gas pipeline catches fire, it is necessary to quickly close the valve, cut off the gas source, plug the loophole, prevent the spread of gas, and protect other facilities threatened by fire; When one end of the building spreads to the other, it should be controlled from the appropriate part in the middle.

Control first and then eliminate are closely linked in the process of extinguishing the fire and cannot be separated. Especially for fighting the initial disaster, there is no fundamental boundary between controlling the development of the fire and extinguishing the fire, and the two are carried out almost simultaneously. This principle should be applied flexibly according to the situation of the fire and its own strength.

Disaster fighting, extinguishing fires that have already occurred, reducing losses, and saving the lives and property of the country and the people. Fire fighting is an important complement to fire prevention. Fighting fires is the obligation of every unit and individual.

If the clothes on the body are caused by the effect of static electricity or careless smoking, you should quickly take off or tear off the clothes, or roll over on the spot to extinguish the fire, but be careful not to roll too fast. Be sure not to run around in a fire suit. If there is water, it can be quickly doused with water, but when the human body is burned by fire, it must not be doused with water to prevent infection.

The fire process is generally divided into five stages: initial initiation, development, violent, decline, and extinguishment.

The initial stage of fire is the best time to extinguish: the general fire in the initial stage, the burning area is not large, the flame is not high, the heat radiation is not strong, the smoke flow is slow, and the burning speed is not fast, which is the most favorable stage for fighting fire.

The best time to extinguish an initial fire is generally within 5 minutes. An initial fire generally refers to a fire within 15 minutes of the initial occurrence of a fire. The initial stage of the fire is characterized by large initial smoke, small burning area of combustible substances, low flames, weak radiant heat, and slow fire development, and this stage is the best time to extinguish the fire.

Extinguishing a fire in the initial stage takes five minutes.

In the early stage of a fire, if it is detected in time and the method is appropriate, the fire can be extinguished with less manpower and simple fire extinguishing equipment.

If the initial fire is not very big in the home kitchen**, you can use wet towels, wet aprons, wet rags, etc. to cover the flames, suffocate the fire, open the doors and windows, and then close the angle valve of the gas cylinder.

In the event of a fire in the field of electrical equipment, in the case of a greater risk of extinguishing the fire with water, a shovel can be used to cover the sand on the electrical equipment to suffocate and extinguish the fire.

Initial stage.

The four phases of fire:

1. Initial stage: After more than ten minutes of fire, the burning area is not large, the smoke flow rate is slow, the flame radiation energy is not much, the surrounding objects and structures begin to be heated, and the temperature rise is not fast. The initial phase is the most favorable time to extinguish the fire and the most favorable time to safely evacuate people.

2. Development stage: the combustion area is expanded, and the combustion speed is accelerated.

3. Ferocious stage: the combustion intensity is the largest, and the heat radiation is the strongest.

4. Attenuation and extinguishing stage: gradually weakening until extinguished.

Hello, very happy for your question, in the initial stage of the fire, is the most favorable period for fighting the fire, because at this time the concentration of smoke has not yet formed, effective damage to the human body, if you calmly respond, you can turn off the circuit, use a wet blanket or quilt to cover the fire, so as to achieve the control of the fire source, and wait until it spreads too late Therefore, the initial stage of the fire is the most favorable period for fighting the fire, there is nothing wrong with this statement I wish you happiness.

1. The initial stage is within 10 minutes after the fire, the local temperature is high, the burning area is not large, and the development is mostly slow, and the initial stage is the most favorable stage for fire fighting.

2. How to fight the first disaster:

Cooling fire extinguishing method. This method is to spray the fire extinguishing agent directly on the combustibles, so that the temperature of the combustibles is lowered below the natural point, so that the combustion stops, and people often use water to extinguish the fire.

Isolation fire extinguishing method. This method is to isolate or evacuate the combustible material from the nearby combustible material, so that the combustion is stopped. For example, the transfer of flammable materials near the fire source to a safe location, the demolition of flammable building structures adjacent to the fire source, and the creation of a space to prevent the spread of fire.

Suffocation fire extinguishing method. That is, take appropriate measures to prevent the air from entering the combustion zone, or dilute the oxygen content in the air with inert gas, so that the combustion is extinguished due to oxygen cut-off.

Inhibition of fire extinguishing methods. This method is to use a chemical fire extinguishing agent to spray into the combustion zone to participate in the combustion reaction, and stop the chain reaction to achieve the purpose of fire extinguishing.

In a fire, the best time to extinguish a fire is when the fire is in its early stages. The fire in this period is small, the fire source has not been fully burned, the fire has not spread to the surrounding objects, and the spread of the fire is slow. The following is a detailed introduction to the best time to extinguish a fire in its early stages:

1.The initial stage of the fire is that the fire is small, the fire source has not been fully burned, the fire has not spread to the surrounding objects, and the fire spreads slowly, generally in the first 10-20 minutes after the fire breaks out.

2.Timing of firefighting: In the initial stage of fire, the best time to extinguish a fire is to extinguish it immediately after the fire breaks out to control the fire as soon as possible and prevent the fire from spreading.

3.Extinguishing method: For the initial fire, fire extinguishers, fire extinguisher vehicles, fire extinguisher stations and other means can be used to extinguish the fire. If the fire is small, it can also be extinguished with simple tools such as buckets and wet towels.

4.Precautions: When fighting fires, you must pay attention to your own safety, follow fire safety regulations and instructions, and take correct fire extinguishing methods to prevent secondary disasters caused by improper fire extinguishing.

At the same time, it is necessary to pay attention to the timing of extinguishing the fire, grasp the opportunity, control the fire as soon as possible, and prevent the spread of the fire.

5.Summary: The fire is in the early stage is the best time to extinguish the fire, which can control the fire and reduce the fire loss.

Therefore, it is necessary to strengthen the publicity and education of fire safety knowledge, improve the fire safety awareness of the public, reduce the possibility of fire, and ensure the safety of people's lives and property.

The best time to extinguish a fire is when it is in its early stages.

The best time to fight a fire depends on the different stages of the fire's development. Generally speaking, the best time to fight a fire is in the early stage of the fire, that is, when the fire has just started, the fire has not yet expanded, the fire source is relatively concentrated, and the smoke and toxic gas emissions are low. At this stage, if effective measures can be taken in time for Sun Wangshi, such as the use of fire extinguishers, fire extinguishing equipment, fire-fighting facilities, etc., the possibility of extinguishing the fire is very high, and the losses caused by the fire will be relatively small.

The best time to fight a fire is in the early stages of the fire, when the fire is weak and easy to control. Taking effective measures in the early stage of a fire can extinguish the fire as soon as possible and reduce the losses caused by the fire. At the same time, we should always keep in mind the knowledge of fire safety and improve the ability of fire prevention and self-rescue.

Measures that should be taken as soon as possible in the early stages of a fire

1. After discovering the fire, call 119 fire alarm ** as soon as possible, notify the fire department, and inform the clear fire location and whether there are people trapped.

2. Use nearby fire extinguishers and fire extinguishing equipment to carry out initial firefighting, and try to control the fire within the minimum range.

3. If the fire is uncontrollable, evacuate the scene immediately and close the doors and windows as much as possible to prevent the fire from expanding.

4. If there is smoke and toxic gas emission, try to cover your mouth and nose with a wet towel and kneel to avoid inhaling toxic gases.

5. If there are people trapped, try to rescue them on the premise of ensuring their own safety, if there is smoke on the way, they need to wear disposable masks, and try to use wet towels to cover their mouths and noses to prevent smoke.