Fire Classification 6 Categories: What is the fire extinguisher that each category is suitable for

Class A fires can be extinguished with water type, foam and other fire extinguishers; To fight class B fires, dry powder should be chosenCarbon dioxideand other fire extinguishers; To fight class C fires, choose fire extinguishers such as dry powder and halide alkanes; Choose fire extinguishers such as halides and dry powder to fight class D electrical equipment fires; Use fire extinguishers such as dry powder to fight Class E fires; To extinguish class F fires, you should chooseFoam fire extinguisher

Class A fire: refers to a fire of solid matter. This substance is usually organic in nature and can produce burning embers when burned. Such as wood, hay, coal, cotton, wool, hemp, paper, plastic (there are ashes after burning) and other fires.

Precautions for the use of fire extinguishers.

Use a dry chemical fire extinguisher.

If it is an external pressure storage type, the operator should hold the spray gun tightly with one hand and lift the opening ring on the gas cylinder with the other hand. If the cylinder is opened on a handwheel, unscrew it in a counterclockwise direction to the highest position and lift the fire extinguisher. When the dry powder is sprayed, it is quickly aimed at the root of the flame.

If the dry chemical fire extinguisher used is a built-in gas cylinder or a pressure storage type, the operator should first remove the safety pin on the opening handle, then hold the nozzle at the front end of the spray hose, and press down the opening pressure handle with the other hand to open the fire extinguisher to extinguish the fire. When using a fire extinguisher or a pressure storage fire extinguisher with a jet hose, one hand should always press down the pressure handle and not let go, otherwise the spray will be interrupted.

Class A fires (solid fires) can be extinguished using ABC dry powder fire extinguishers; Class B fires (liquid and meltable solid fires) can be extinguished using Class BC dry chemical fire extinguishers; Class C fires (gas fires) can be extinguished with ABC class BC dry powder fire extinguishers, and can be extinguished with gas fire extinguishers; Class D fires (active metal fires) can be extinguished using a special dry powder fire extinguisher; Class E fires (live fires) can be extinguished by ABC dry powder fire extinguishers and BC dry powder fire extinguishers; Class F fires (cooking fires) can be extinguished with BC dry powder fire extinguishers, ABC dry powder fire extinguishers are not effective, and carbon dioxide gas fire extinguishers are easy to re-ignite.

1. Foam fire extinguisher.

The foam fire extinguisher forms a foam covering layer on the surface of the combustible, which isolates the surface of the combustible material from the air and plays the role of suffocating and extinguishing the fire. Foam fire extinguishers are suitable for extinguishing fires in wood, cotton, linen, paper, etc., as well as fires in petroleum products and oil; However, it cannot extinguish fires with water-soluble flammable and flammable liquids.

2. Dry powder fire extinguisher.

Dry chemical fire extinguishers eliminate reactive free ions from combustibles, interrupting the chain reaction of combustion. Dry chemical fire extinguishers are suitable for extinguishing combustible liquids, gases, electrical fires and fires that are not suitable for water extinguishing. ABC dry chemical fire extinguishers can extinguish live material fires.

3. Carbon dioxide fire extinguisher.

Carbon dioxide fire extinguishers are suitable for extinguishing fires of electrical equipment, precision instruments, books and archives, as well as fires of oil, gas and some substances that cannot be extinguished with water.

Fire extinguisher. The main thing is to inhibit the chain reaction of combustion and stop combustion. At the same time, it has a certain cooling and suffocation effect. It is suitable for extinguishing fires of flammable and combustible liquids, gases and live equipment, as well as fires on the surface of solid substances, especially for fighting fires in precision instruments, computers, precious cultural relics and warehouses of precious materials, and can also extinguish the initial disasters of aircraft, automobiles, ships, hotels and other places.

Fire classification: 1. Class A fire: refers to solid material fire. This substance tends to be organic in nature and generally produces hot embers when burned. Such as wood, coal, cotton, wool, hemp, paper and other fires.

2. Class B fire: refers to liquid fire and meltable solid matter fire. Such as gasoline, kerosene, diesel, **, methanol, ethanol, asphalt, paraffin and other fires.

3. Class C fire: refers to gas fire. Such as gas, natural gas, methane, ethane, propane, hydrogen and other fires.

4. Class D fire: refers to metal fire. Such as potassium, sodium, magnesium, aluminum-magnesium alloy and other fires.

5. Class E fire: refers to the fire of live objects and precision instruments and other substances.

Class A fires can be extinguished with water type, foam and other fire extinguishers; To fight Class B fires, choose fire extinguishers such as dry powder and carbon dioxide; To fight class C fires, choose fire extinguishers such as dry powder and halide alkanes; Choose fire extinguishers such as halides and dry powder to fight class D electrical equipment fires; Use fire extinguishers such as dry powder to fight Class E fires; To extinguish Class F fires, choose a foam fire extinguisher. <

Class A fires can be extinguished with water type, foam and other fire extinguishers; To fight Class B fires, choose fire extinguishers such as dry powder and carbon dioxide; To fight class C fires, choose fire extinguishers such as dry powder and halide alkanes; Choose fire extinguishers such as halides and dry powder to fight class D electrical equipment fires; Use fire extinguishers such as dry powder to fight Class E fires; To extinguish Class F fires, choose a foam fire extinguisher.

The types of fire extinguishers and the applicable fire types are:

1. Portable foam fire extinguisher.

Foam fire extinguishers are suitable for extinguishing the initial disaster of oil and general substances. When using, hold the lifting ring of the fire extinguisher with your hand, and lift it to the fire scene smoothly and quickly, do not carry it horizontally or horizontally. When extinguishing the fire, hold the ring with one hand and the bottom edge of the barrel with the other hand, turn the fire extinguisher upside down, aim the nozzle at the fire source, and shake it vigorously a few times to extinguish the fire.

2. Portable carbon dioxide fire extinguisher.

Carbon dioxide fire extinguishers are suitable for extinguishing the initial disaster of precision instruments, electronic equipment and electrical appliances below 600 volts. Portable CO2 fire extinguishers can be used in two ways, namely handwheels and duckbills.

3. Portable dry powder fire extinguisher.

Dry powder fire extinguishers are suitable for extinguishing initial disasters such as oil, combustible gas, and electrical equipment. When using, first open the safety pin, hold the nozzle with one hand, aim at the fire source, and pull the pull ring with the other hand to extinguish the fire source.

4. Portable "1211" fire extinguisher.

The 1211 "fire extinguisher is suitable for extinguishing the initial disaster of valuables such as oil, instruments and cultural relics files. When using, first tear off the aluminum seal, pull out the safety safety pin, hold the bottom of the fire extinguisher with one hand, hold the pressure handle switch with the other hand, aim the nozzle at the fire source spray, release the pressure handle, and the spray will stop.

Water-type fire extinguisher, suitable for Class A solid matter fires.

Foam fire extinguisher, suitable for Class A solid material fire, Class B liquid fire.

Dry powder fire extinguisher, suitable for Class A solid material fire, Class B liquid fire, Class C gas fire, Class E live fire.

Carbon dioxide fire extinguisher, suitable for Class A solid material surface fire, Class B liquid fire, Class C gas fire, Class E live fire.

Alkyl halide fire extinguisher is suitable for Class A solid matter fire, Class B liquid fire, Class C gas fire and Class E live fire. Non-essential places should not be equipped with alkyl halide fire extinguishers.