Step 5 of using a fire extinguisher

Do you know the five steps of using a fire extinguisher? The use of fire extinguishers is a common sense of life. Only by knowing the knowledge of the use of fire extinguishers can you save yourself in an emergency. I have carefully arranged five steps to use a fire extinguisher for everyone, hoping to help you.

Steps for using the fire extinguisher 1 1. Five steps for using the fire extinguisher.

The five steps are looking, lifting, pulling, aiming and pressing. A look: refers to whether the fire extinguisher is still in the validity period and whether the pointer of the pressure gauge is in the green area; The second lift: raise the fire extinguisher with both hands; Three pulls: pull the safety pin; Four aiming: aim the fire extinguisher at the root of the flame; Five pressure: press the handle, aim at the ignition point, and press it to the end until the flame goes out.

Second, the fire extinguisher use matters needing attention

1. Fire extinguishers in public places are usually placed in corridors or passages with eye-catching red signs. In daily life, every time you go to strange public places, such as shopping malls and hotels, you should first look at the route of safe passage and the placement area of fire-fighting equipment, so that you can do a good job of fire fighting in time in case of sudden fire accidents.

2. Check the pressure of the fire extinguisher regularly. If the pressure pointer points to the red area, it should be sent to a regular professional unit for repair or refilling. If it has been used, it should be sent to the maintenance unit for filling in time.

3. When it is officially used, it should be handled calmly. Shake the fire extinguisher to loosen the internal dry powder, and then pull out the safety bolt of the fire extinguisher. People stand in the windward, aim at the root of the fire source, about 3 meters away from the fire source, and press the button to put out the fire until the fire source goes out.

4, after the fire, and then check whether there is a residual fire hidden; If so, continue to spray a few times to prevent resurgence.

Steps for using the fire extinguisher: 5 steps 2 1. First, check whether the fire extinguisher is within the normal working pressure range; The fire extinguisher pressure gauge is divided into three color zones, yellow indicates sufficient pressure, green indicates normal pressure, and red indicates undervoltage; Generally, the fire extinguisher pointer should be at least in the green area, otherwise it needs to be pressurized in the safety supervision department.

2. Turn the fire extinguisher upside down several times to loosen the dry powder inside.

3. Unplug the insurance pin; Usually lead seal or plastic safety pin. Pull the ring directly and pull it out hard, and the safety pin can be pulled off.

4. After unplugging the safety pin, hold the pressure handle with one hand and the nozzle with the other hand, and place the fire extinguisher vertically; Press the handle hard and the dry powder will be ejected from the nozzle.

5. When spraying, aim at the root of the flame and stand about 3 meters away from the root of the flame in the upwind direction.

(1) dry powder fire extinguisher

Usage: When putting out the fire, you can put the fire extinguisher on your hands or shoulders, quickly walk to the fire, and put it down about 5 meters away from the burning place. If you are outdoors, you should choose to spray against the wind.

1. If the dry powder fire extinguisher used is stored externally, the operator should hold the spray gun tightly with one hand and lift the opening bail on the gas cylinder with the other. If the cylinder is opened by handwheel, loosen it counterclockwise, turn it to the highest position, and then lift the fire extinguisher. When the dry powder is ejected, it is quickly aimed at the root of the flame.

2. If the dry powder fire extinguisher used is built-in gas cylinder or pressure storage type, the operator should first unplug the safety pin on the opening handle, then hold the nozzle at the front end of the injection hose, and press the opening handle with the other hand to open the fire extinguisher to extinguish the fire. When using a fire extinguisher with a spray hose or an accumulator fire extinguisher, always hold down the handle with one hand and never let go, otherwise the spray will be interrupted.

(2) foam extinguisher

1. Portable usage: You can carry the lifting ring on the top of the barrel and go to the fire quickly. At this time, care should be taken not to tilt the fire extinguisher excessively, nor to hold it horizontally or upside down, so as to avoid mixing the two chemicals and spraying it in advance. When the distance from the ignition point is about 10 meter, the cylinder can be turned upside down, with one hand holding the bail tightly and the other hand holding the cylinder bottom ring, aiming the jet at the combustion products.

2. How to use the cart: When using it, it needs two people to operate it. First push and pull the fire extinguisher to the fire point quickly, and stop at a place about 10 meters away from the fire point. After one person applies the spray hose, hold the spray gun tightly with both hands and aim at the burning place; The other is to turn the handwheel counterclockwise, so that the screw rises to the highest position, so that the bottle cap is completely opened, and then pour the steel bottle backwards, so that the pull rod touches the ground, rotate the valve handle 90 degrees, and spray foam to extinguish the fire. If the valve is installed at the spray gun, the person in charge of operating the spray gun will open the valve.

(3) Carbon dioxide fire extinguisher

Usage: When putting out a fire, just lift or carry the fire extinguisher to the fire site. Pull out the safety pin of the fire extinguisher at a distance of about 5 meters from the combustible materials, and hold the handle at the root of the horn with one hand and the pressure handle of the switch valve with the other. For carbon dioxide fire extinguishers without water hose, the horn should be at 70-90 degrees with the upper plate. When using, you can't directly grasp the outer wall of the horn or the metal connecting pipe with your hands to prevent your hands from being frostbitten.

When putting out fire, when combustible liquid burns in a flowing state, the user sprays the jet of carbon dioxide extinguishing agent from near and far to the flame. If combustible liquid burns in the container, the user should raise the horn. Spray into the combustion container from the upper part of one side of the container. However, the carbon dioxide jet can not directly impact the surface of combustible liquid, which prevents combustible liquid from being washed out of the container, expands the fire and brings difficulties to fire fighting.

Matters needing attention

1. During transportation and storage, the fire extinguisher should avoid being turned upside down, wet, exposed to sunlight, strong radiation and contact with corrosive substances.

2. The storage environment temperature of fire extinguishers should be within the range of-10-45℃.

3. The place where the fire extinguisher is placed should be kept dry and ventilated to prevent the cylinder from being corroded by moisture. Sun exposure and strong radiant heat should be avoided to avoid affecting the normal use of fire extinguishers.

4. The fire extinguisher shall be inspected regularly according to the requirements and inspection cycle specified by the manufacturer.

5. Once the fire extinguisher is turned on, even if it is not sprayed much, it must be refilled according to the specified requirements. Refilling shall be carried out by professional maintenance departments in accordance with the requirements and methods specified by the manufacturer, and the variety, weight and driving gas pressure of the extinguishing agent shall not be changed casually.

6. If there is a problem with the fire extinguisher through functional inspection, it must be repaired by a qualified maintenance unit, and the damaged parts and gas cylinders should be replaced for hydrostatic test, and the fire extinguishing agent and driving gas should be refilled.

7. The fire extinguishers repaired by the maintenance department shall be recognized by the fire supervision department, and the name and maintenance date of the maintenance unit shall be indicated.

8. Fire extinguishers, whether used or unused, must be sent to the maintenance unit for maintenance after reaching the specified maintenance cycle from the production date (each fire extinguisher cylinder has a production date). Those that have reached the retirement age must be scrapped, and those that fail to pass the hydraulic test of the cylinder during maintenance must also be scrapped.

9, management office must strengthen the daily management and maintenance of fire extinguishers. Establish a "fire extinguisher account", and register the type, configuration quantity, installation location and the person responsible for maintenance and management; Clarify the responsibilities of the person responsible for maintenance management.

10. The management office should check the maintenance of fire extinguishers at least once a quarter, including: the implementation of the maintenance responsibilities of the responsible person, whether the pressure value of the fire extinguisher is within the normal pressure range, whether the safety pin and lead seal are in good condition, whether the fire extinguisher can not be used for other purposes, whether it is placed stably, whether it is buried, whether the fire extinguisher box is unlocked, and whether the fire extinguisher is within the validity period. It is necessary to make a "fire extinguisher"

Scope of application of different fire extinguishers

1, dry powder fire extinguisher

Scope of application: sodium bicarbonate dry powder fire extinguisher is suitable for the initial fire of flammable, combustible liquids, gases and charged equipment; Ammonium phosphate dry powder fire extinguisher can be used not only for the above kinds of fires, but also for the initial fire of solid substances. But they can't put out the fire of metal burning.

2. foam extinguisher

Scope of application: it is suitable for fighting general Class B fires, such as oil and grease fires, and can also be used for fighting Class A fires, but it cannot fight water-soluble flammable and combustible liquids, such as alcohols, esters, ethers, ketones and other substances in Class B fires; It is also impossible to put out live equipment and class C and D fires.

3, carbon dioxide fire extinguisher

Scope of application: Carbon dioxide fire extinguishers are mainly used to put out initial fires of valuable equipment, archives, instruments and meters, electrical equipment below 600 volts and oil.