Dry powder extinguisher use method and precautions analysis

Dry powder fire extinguishers are suitable for initial fires of flammable, flammable liquids, gases, and live equipment. Except for these types of fires, ammonium phosphate dry powder fire extinguishers can also fight initial fires of solid materials. But none can save metal fires.

When a dry powder fire extinguisher is used to extinguish flammable and flammable liquids, fire should be directed at the main part of the fire. If the liquid fire that was extinguished burns, it should be aimed at the root of the fire from near to far, and shoot it from side to side until the flame is completely extinguished. If the flammable liquid is combusted in the container, the user should aim at the root of the fire and shake it so that the flow of sprayed powder covers the entire surface of the opening of the container. When the flame is driven out of the container, the user should continue to spray until the flame is completely extinguished. . When flammable liquids in fire-fighting containers are in fire, attention should be paid that the nozzles cannot be directly aimed at the liquid surface to prevent the flammable liquids from being spilled by the impact force of the jets to expand the fire and cause difficulty in extinguishing the fire. If the flammable liquid is burned in the metal container for a long time, the wall temperature of the container is higher than the autoignition point of the flammable liquid. This can easily cause the phenomenon of re-ignition after fire extinguishing. If used together with a foam fire extinguisher, the fire can be extinguished. Better results.

Instructions:

When the fire is extinguished, the fire extinguisher can be hand-carried or shoulder-fired and the fire extinguisher can quickly go to the fire. The fire extinguisher is put down about 5 meters from the burning place. If you are outdoors, you should choose to spray in the upwind direction. If the dry powder fire extinguisher used is of the plug-in type, the operator should grip the spray gun with one hand and open the lifting ring on the other. If the opening of the gas cylinder is hand-wheel type, unscrew it counterclockwise and rotate it to the highest position, then lift the fire extinguisher. When the dry powder sprayed out, quickly aim at the root of the fire. If the dry powder fire extinguisher used is a built-in gas cylinder or a pressure storage type, the operator should first unplug the safety pin on the opener, then hold the nozzle part at the front end of the spray hose, and the other hand will open the pressure handle. Press down and turn on the extinguisher to extinguish the fire. When using a fire extinguisher or pressurized fire extinguisher with a spray hose, the pressure handle should always be pressed down by one hand and cannot be released, otherwise the injection will be interrupted.

Use note:

When using ammonium phosphate dry powder fire extinguishers to fight solid flammable materials, fire should be directed at the most violent place and fired up and down. If conditions permit, the user can use the fire extinguisher to spray along the four sides of the burning object, so that the dry powder fire extinguishing agent is evenly sprayed on the surface of the burning object until the flame is completely extinguished.

Tips: The use of push-type dry powder fire extinguisher is the same as the use of portable dry powder fire extinguisher.

Flexible Solar Panels 120w

Flex Solar,120W Flexible Solar Panel,120W Light Weight Waterproof,Flexible Solar Panel For Car Roof

Zhejiang G&P New Energy Technology Co.,Ltd , https://www.solarpanelgp.com

Posted on