What is used to extinguish oily fires, and what fire extinguishers are used for oily fires

Dry powder is generally used to extinguish the fire in a small area, foam is used to extinguish the fire if it is a large-scale oil fire such as an oil depot, and it can also be extinguished if it is a restricted fire water spray. There are also factories that prepare a part of the sand to cover up the fire extinguishing, but the scope of use is very small, it is best for you to describe it carefully, and say what is the place to extinguish the fire, why do you ask, I can be better.

The basic method of extinguishing fires.

Generally speaking, there must be three conditions, namely combustibles, combustibles (mainly referring to oxygen-containing air, oxidants, etc.) and ignition sources, and the three must interact with each other. Fire extinguishing is to take certain measures to destroy the basic conditions that must be met by burning according to the state and mode of combustion of the first substance, so that the combustion stops. There are four basic methods of extinguishing fires:

1. Cooling fire extinguishing method.

The extinguishing agent is sprayed directly on the combustible, so that the temperature of the combustible material is lowered below the ignition point, so that the combustion stops. The main function of using water to extinguish a fire is to cool and extinguish the fire. In addition to water-avoiding substances, general substances can be cooled and extinguished with water.

On the fire ground, in addition to directly extinguishing the fire by cooling method, water is often used to cool the combustibles that have not yet burned to prevent them 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.

Isolate or evacuate combustibles from nearby combustibles to stop combustibles. There are many specific measures to adopt isolation method for inactivation, such as transferring flammable and explosive substances near the fire source to a safe place; Close the valves on the equipment or pipelines to prevent combustible gases and liquids from flowing into the combustion zone; Eliminate combustible gases and liquids in production equipment and containers; Obstruction of the evacuation of flammable, combustible or diffuse gases; Demolition of flammable structures adjacent to the source of goods, spatial areas that cause the spread of fires, etc.

3. Suffocation fire extinguishing method.

Take appropriate measures to prevent air from entering the combustion zone, or dilute the oxygen content in the air with inert gas, so that the combustion is deprived of oxygen or extinguished by deprivation of oxygen. This method is particularly suitable for the rescue of enclosed spaces, production plants and containers. When the suffocation method is used to extinguish the fire on the fire ground, non-combustible or incombustible materials such as wet sacks, wet quilts, sand, foam, etc. can be used to cover the burning materials or seal the holes; Flushing water vapor and inert gases (such as carbon dioxide, nitrogen, etc.) into the combustion area; The original doors and windows on the building and the components on the production, storage and transportation equipment are used to close the combustion zone and prevent fresh air from entering.

In addition, when other remedies are not available and conditions permit, water inundation (perfusion) can be used for remediation.

Fourth, suppress the fire extinguishing method.

The chemical fire extinguishing agent is sprayed into the combustion zone to participate in the combustion reaction, and the combustion reaction is stopped by stopping the chain reaction. The fire extinguishing agents that can be used in this method are dry powder and isohalide fire extinguishing agents. When extinguishing the fire, it is necessary to accurately spray a sufficient amount of fire extinguishing agent in the combustion area, so that the fire extinguishing agent can participate in and block the combustion reaction, otherwise it will not play the role of tissue combustion.

At the same time, necessary cooling measures should be taken to prevent re-ignition.

Bury it with sand to keep out the air, and never use water...

The fire extinguishers suitable for oil fires are as follows:

1. Foam fire extinguisher. This fire extinguisher is suitable for ordinary fires and oil fires, when using, the fire extinguisher is upside down and swings left and right, so that the agent is mixed, carbon dioxide is generated, and the plug of the fire extinguisher is removed, and then the foam solution of carbon dioxide will be sprayed out by hand pressure switch to block the oxygen of the fire source and extinguish the fire.

2. Carbon dioxide fire extinguisher. This fire extinguisher is suitable for oil fires and electrical fires, the method used is to first pull out the safety pin, then hold the wooden grip in front of the horn nozzle, and then press the valve switch to be sprayed by internal high pressure. Check every three months, and refill when weight is reduced.

3. Dry powder fire extinguisher. This fire extinguisher is suitable for ordinary fires, oil fires, and electrical fires, and the method used is to break the seal, pull up the safety pin, and press down the nozzle pipe towards the fire point, and the carbon dioxide cylinder pressure plate is sprayed out. The pressure gauge should be checked every three months, and the gauge should be maintained at 150 to 200 pounds, and the agent should be effective for three years.

4. Alkaline alkane fire extinguisher. This fire extinguisher is suitable for all types of fires, such as ordinary fires, oil fires, electrical fires, metal fires, especially effective for oil and electrical fires, small volume, large effect, no corrosion, non-conductive, durable, no pollution, how to use: pull out the plug.

After holding the wooden grip in front of the horn nozzle, and then pressing the valve switch to eject under internal high pressure.

Water-based fire extinguishers cannot be used to extinguish liquid fires, which will cause oil splashing and accelerate the spread of fires; Foam fire extinguishers or dry chemical fire extinguishers should be used to extinguish fires.

The fire extinguishers used for oil ignition are as follows:

1. Foam fire extinguisher. It is often used to extinguish type B fires, such as fires caused by grease and grease products, and type A fires. However, it is not suitable for fires caused by flammable liquids of type B, fires caused by water solubility, and fires caused by electrical appliances.

2. Carbon dioxide fire extinguishers, which are used in the fire of valuable equipment, archival materials, instruments and equipment, as well as fires caused by electrical facilities and oil substances with a voltage below 600 volts.

3. Ammonium phosphate dry powder fire extinguisher. It has the advantages of good fluidity, long storage time, and good insulation. It has a good fire extinguishing effect for oil fires, fires of electrical equipment, and fires caused by flammable liquids.

Fire extinguisher precautions

1. Check the pressure gauge on the fire extinguisher regularly to see if its pointer is within the specified range, so as to ensure its normal use. If the pointer is out of range, contact a professional in time to carry out maintenance work.

2. The safety pin of the fire extinguisher is a component to pay attention to, which is the element that blocks the opening of the fire extinguisher.

1. Dry powder fire extinguisher:Sodium bicarbonate dry powder fire extinguisher is suitable for flammable, combustible liquid, gas and live equipment for initial disasters; In addition to the above-mentioned types of fires, ammonium phosphate dry powder fire extinguishers can also be used to extinguish the initial disaster of solid substances. But none of them can extinguish metal burning fires.

2. Foam fire extinguisher:It is suitable for fighting general Class B fires, such as oil products, grease and other fires, and can also be applied to Class A fires, but cannot extinguish fires of water-soluble flammable and flammable liquids in Class B fires, such as alcohol, esters, ethers, ketones and other substance fires; It is also not possible to extinguish live equipment and Class C and D fires.

Fire extinguisher usage steps:

1. Mention. When using the fire extinguisher, the fire extinguisher should be lifted first, kept in a horizontal and vertical state, and the fire extinguisher should be shaken several times, so that the dry powder can be loosened and the dry powder can be avoided from accumulating into lumps.

2. Pull. Before use, unplug the metal ring of the fire extinguisher, so that the dry powder can be sprayed, if you want to pull out the latch, then remove the lead seal at the other end of the latch.

3. Aim. Aim the fire extinguisher at the fire source, hold the front end of the nozzle with one hand, control the direction of the nozzle spray, and lift the fire extinguisher handle with the other hand.

4. Press. Press down the fire extinguisher switch so that the fire extinguisher can spray dry powder to extinguish the fire.

Oil** suitable for foam fire extinguishers, carbon dioxide fire extinguishers, ammonium phosphate dry powder fire extinguishers, sodium bicarbonate dry powder fire extinguishers.

Foam fire extinguisher:

It is suitable for fighting Class B fires, such as oil products, grease and other fires.

CO2 fire extinguisher:

Carbon dioxide fire extinguishers are mainly used to extinguish the initial fire of valuable equipment, archives, instruments, electrical equipment below 600 volts and oil.

Ammonium phosphate salt dry powder:

It can extinguish all kinds of oils, flammable liquids, combustible gases and initial fires of electrical equipment.

Origin: The world's first fire extinguisher was born in London in 1834, when a fire almost completely destroyed the old Palace of Westminster, where the British Parliament building was located. Among the many firewatchers, there was one person who did not come to see the fire with nothing to do, and he was George William Manby.

Born in Norfolk, Manby joined the army as a young man, rose to captain, and served as commander of the Yarmouth Barracks, a position that gave him time to devote himself to the cause that strongly appealed to him to saving human lives. Earlier, he was keen on shipwreck rescue, inventing the trouser lifebuoy and being the first to propose the use of lighthouse flashes to identify signals. Later, Manby shifted his genius from marine rescue to fire lifesaving.

At the time of the fire, he was experimenting with fireproof clothing.

His most remarkable and pioneering contribution was the invention of the portable compressed gas fire extinguisher, which was a two-foot-long, eight-inch diameter copper cylinder with a capacity of four gallons, essentially the same as today's fire extinguishers. He put the fire extinguisher in his specially designed trolley, and he hoped that there would be a patrol equipped with such a fire extinguisher to immediately extinguish the initial small fire at the ** location, so as to reduce the number of major fires.

In the event of a fire in light oil, it cannot be extinguished with water. Extinguishing an oil fire with water will not only fail to extinguish the fire, but will expand the fire. Because the specific gravity of oil is lighter than that of water, and it does not dissolve in water, it will float on the surface of the water and continue to burn, while the water will flow elsewhere, which will carry the fire to other places and continue to spread.

At that time, as long as the pot lid was covered, or covered with a wet cloth bag, the fire could be extinguished, which was a better way to extinguish the fire in a small shop or family when oil caught fire.

Precautions for oil pan**.

1. If you encounter an oil pot**, don't panic, it is very necessary to stay calm.

2. Don't use water, whether it's an electric pot or a gas stove, don't use water to extinguish it.

3. Cut off the electrical source. Prevent other more serious accidents.

4. If you find **, quickly pick up the lid of the pot and cover it, due to the lack of air, the fire will naturally go out.

5. Ask for help, if the fire is out of control, call the police on 119 immediately.

The above content refers to China News Network - Snack Bar Oil Pot** Watering and extinguishing the more it burns, the bigger it gets, and the alarm rescues.