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Common use of fire extinguishers
Abstract：Portable fire extinguishers are our more common fire extinguishers, but also we are more likely to use the fire extinguishers, here to introduce the use of two commonly used portable 1211 fire extinguishers and dry powder fire extinguishers.
Portable fire extinguishers are our more common fire extinguishers, but also we are more likely to use the fire extinguishers, here to introduce the use of two commonly used portable 1211 fire extinguishers and dry powder fire extinguishers.
1211 When the fire extinguisher is used, the portable fire extinguisher should be brought to the fire place, first pull out the safety pin, hold the opening handle with one hand, and hold the nozzle at the front of the spray hose with the other hand. If the fire extinguisher does not have a spray hose, hold the opening lever with one hand and hold the bottom ring at the bottom of the fire extinguisher with the other hand. First point the nozzle at the burning place, firmly grip the opening pressure handle, so that the fire extinguisher spray.
When the burning liquid shows a flowing burning, it should be aimed at the flame root from close to far and left and right, and push forward quickly until the flame is extinguished. If the flammable liquid is burning in the container, it should be aimed at the flame, and when the flame is driven out of the container, the jet stream will follow the flame until the flame is extinguished.
It should be noted that the jet can not be directly sprayed on the burning liquid surface to prevent the impulse of the extinguishing agent from rushing the flammable liquid out of the container and expanding the fire, resulting in the difficulty of extinguishing the fire. If the initial fire of the flammable solid substance is saved, the jet is aimed at the fierce burning of the jet, when the flame is extinguished, measures should be taken in time to prevent it from reigniting.
1211 When the fire extinguisher is used, it can not be upside down or lying horizontally, otherwise the fire extinguishing agent will not be emitted. In addition, when used outdoors, spray should be selected in the upwind direction; In the narrow indoor fire, the operator should quickly evacuate after the fire, because 1211 fire extinguishing agent has a certain toxicity, to prevent harm to the human body.
Dry powder fire extinguisher Sodium bicarbonate dry powder fire extinguisher is suitable for flammable, flammable liquid, gas and live equipment initial fire; Ammonium phosphate dry powder fire extinguishers can be used in addition to the above several types of fires, but also can save the initial fire of solid substances. But neither can put out a metal burning fire.
When extinguishing the fire, if outdoors, you should choose to spray in the upwind direction. If the dry powder fire extinguisher used is an external pressure storage type, the operator should hold the spray gun with one hand and lift the opening lift ring on the storage cylinder with the other hand. If the opening of the gas cylinder is handwheel type, turn it counterclockwise and turn it to a higher position, then lift the fire extinguisher. When the dry powder is sprayed, it is quickly directed at the root of the flame. If the dry powder fire extinguisher used is a built-in gas storage cylinder or a pressure storage type, the operator should first pull the safety pin on the opening handle, and then press the nozzle at the front of the spray hose. The other hand will press down the opening pressure handle and open the fire extinguisher to extinguish the fire. When a fire extinguisher with a spray hose or a pressure storage fire extinguisher is in use, one hand should always press down the handle and cannot be released, otherwise the injection will be interrupted.
When extinguishing flammable and flammable liquid fires, dry powder fire extinguishers should be directed at the flame. If the liquid fire being saved is flowing and burning, they should be directed at the root of the flame from near to far, and sprayed from left and right until the flame is extinguished. If the flammable liquid burns in the container, the user should aim at the root of the flame, so that the spray of dry powder covers the entire surface of the container; When the flame is driven out of the container, the user should continue spraying until the flame is completely extinguished. When fighting a flammable liquid fire in the container, it should be noted that the nozzle should not be sprayed directly at the liquid level to prevent the impact of the jet from splashing out the flammable liquid and expanding the fire, resulting in difficulty in extinguishing the fire. If the combustible liquid burns for too long in the metal container, the wall temperature of the container is higher than the spontaneous combustion point of the flammable liquid, it is easy to cause the phenomenon of reignition after extinguishing the fire, if combined with the foam fire extinguisher, the fire extinguishing effect is better.
When using the ammonium phosphate dry powder fire extinguisher to put out a solid fuel fire, spray it at the fiercely burning place and shoot it up and down, left and right. If conditions permit, the user can carry the fire extinguisher along the four sides of the combustion, so that the dry powder extinguishing agent is evenly sprayed on the surface of the combustion until the flame is extinguished.
1211 When the fire extinguisher is used, the portable fire extinguisher should be brought to the fire place, first pull out the safety pin, hold the opening handle with one hand, and hold the nozzle at the front of the spray hose with the other hand. If the fire extinguisher does not have a spray hose, hold the opening lever with one hand and hold the bottom ring at the bottom of the fire extinguisher with the other hand. First point the nozzle at the burning place, firmly grip the opening pressure handle, so that the fire extinguisher spray.
When the burning liquid shows a flowing burning, it should be aimed at the flame root from close to far and left and right, and push forward quickly until the flame is extinguished. If the flammable liquid is burning in the container, it should be aimed at the flame, and when the flame is driven out of the container, the jet stream will follow the flame until the flame is extinguished.
It should be noted that the jet can not be directly sprayed on the burning liquid surface to prevent the impulse of the extinguishing agent from rushing the flammable liquid out of the container and expanding the fire, resulting in the difficulty of extinguishing the fire. If the initial fire of the flammable solid substance is saved, the jet is aimed at the fierce burning of the jet, when the flame is extinguished, measures should be taken in time to prevent it from reigniting.
1211 When the fire extinguisher is used, it can not be upside down or lying horizontally, otherwise the fire extinguishing agent will not be emitted. In addition, when used outdoors, spray should be selected in the upwind direction; In the narrow indoor fire, the operator should quickly evacuate after the fire, because 1211 fire extinguishing agent has a certain toxicity, to prevent harm to the human body.
Dry powder fire extinguisher Sodium bicarbonate dry powder fire extinguisher is suitable for flammable, flammable liquid, gas and live equipment initial fire; Ammonium phosphate dry powder fire extinguishers can be used in addition to the above several types of fires, but also can save the initial fire of solid substances. But neither can put out a metal burning fire.
When extinguishing the fire, if outdoors, you should choose to spray in the upwind direction. If the dry powder fire extinguisher used is an external pressure storage type, the operator should hold the spray gun with one hand and lift the opening lift ring on the storage cylinder with the other hand. If the opening of the gas cylinder is handwheel type, turn it counterclockwise and turn it to a higher position, then lift the fire extinguisher. When the dry powder is sprayed, it is quickly directed at the root of the flame. If the dry powder fire extinguisher used is a built-in gas storage cylinder or a pressure storage type, the operator should first pull the safety pin on the opening handle, and then press the nozzle at the front of the spray hose. The other hand will press down the opening pressure handle and open the fire extinguisher to extinguish the fire. When a fire extinguisher with a spray hose or a pressure storage fire extinguisher is in use, one hand should always press down the handle and cannot be released, otherwise the injection will be interrupted.
When extinguishing flammable and flammable liquid fires, dry powder fire extinguishers should be directed at the flame. If the liquid fire being saved is flowing and burning, they should be directed at the root of the flame from near to far, and sprayed from left and right until the flame is extinguished. If the flammable liquid burns in the container, the user should aim at the root of the flame, so that the spray of dry powder covers the entire surface of the container; When the flame is driven out of the container, the user should continue spraying until the flame is completely extinguished. When fighting a flammable liquid fire in the container, it should be noted that the nozzle should not be sprayed directly at the liquid level to prevent the impact of the jet from splashing out the flammable liquid and expanding the fire, resulting in difficulty in extinguishing the fire. If the combustible liquid burns for too long in the metal container, the wall temperature of the container is higher than the spontaneous combustion point of the flammable liquid, it is easy to cause the phenomenon of reignition after extinguishing the fire, if combined with the foam fire extinguisher, the fire extinguishing effect is better.
When using the ammonium phosphate dry powder fire extinguisher to put out a solid fuel fire, spray it at the fiercely burning place and shoot it up and down, left and right. If conditions permit, the user can carry the fire extinguisher along the four sides of the combustion, so that the dry powder extinguishing agent is evenly sprayed on the surface of the combustion until the flame is extinguished.
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