When using a carbon dioxide fire extinguisher to extinguish a fire outdoors, you should choose to stand in the windward direction of the fire source. Even if the wind blows from the user to the fire source, you should avoid the released carbon dioxide gas from affecting the user's breathing.
When using carbon dioxide fire extinguishers, outdoor ones should also be sprayed in the upwind direction, and hands should be placed on the wooden handle of the steel cylinder to prevent frostbite. If it is used in a narrow indoor space, the operator should leave quickly after fire fighting to prevent suffocation.
When using simple fire extinguishers outdoors, they should be sprayed in the upwind direction; When putting out a fire in a narrow room, the operator should evacuate quickly after the fire, because the extinguishing agent 12 1 1 is also toxic to prevent harm to human body.
Fire extinguishing method:
Cooling method: The principle of this fire extinguishing method is to spray the fire extinguishing agent directly on the burning object, so that the burning temperature is lowered below the ignition point and the burning is stopped. Or spray the fire extinguishing agent on the substance near the fire source, so that it will not form a new ignition point due to the thermal radiation of the flame.
Isolation method: the isolation fire extinguishing method is to isolate or remove the burning substances from the unburned combustible substances around, interrupt the supply of combustible substances, and stop burning due to the lack of combustible substances.
The specific methods are as follows: remove flammable, combustible, explosive and combustion-supporting articles near the fire source; Close the valves of combustible gas and liquid pipelines to reduce and prevent combustible substances from entering the combustion zone; Try to prevent scattered flammable and combustible liquids; Demolition of flammable buildings near the fire source to form a space area to prevent the fire from spreading.
Asphyxiation method: Asphyxiation fire extinguishing method is a kind of fire extinguishing method that prevents air from flowing into combustion zone or dilutes air with incombustible zone or incombustible substance, so that combustible materials can not get enough oxygen and go out.
The specific method is: cover flammable materials with sand, cement, wet sacks, wet quilts and other nonflammable or nonflammable substances; Spray atomized water, dry powder, foam and other fire extinguishing agents to cover the combustion products; Filling containers and equipment with inert gases such as steam or nitrogen and carbon dioxide; Close fire-fighting buildings, equipment and holes; Spray nonflammable gas or nonflammable liquid (such as carbon dioxide, nitrogen, carbon tetrachloride, etc.). ) into combustible areas or on combustible materials.