What type of fire extinguisher should be used for electrical fire
The dry powder fire extinguisher is equipped with dry powder fire extinguishing agent such as ammonium phosphate salt. This dry powder fire extinguishing agent is easy to flow and re-drying. It consists of inorganic salts and crushed and dried additives, which can effectively save the first fire.
Carbon dioxide gas can be excluded from the air and surrounded on the surface of the burning object or distributed in a more closed space, reducing the oxygen concentration around the combustibles or in the protective space, causing suffocation and extinguishing.
In addition, when carbon dioxide is ejected from the storage container, it will quickly vaporize from liquid to gas, and absorb part of the heat from the surroundings to play a cooling role.
According to GB 501402005 'Code for Design of Configuration of Fire Extinguishers in Buildings', electrical fires belong to the selection of Class E fires and Class E fire extinguishers: the source of Class E fires should choose ammonium phosphate dry powder fire extinguishers, sodium bicarbonate dry powder fire extinguishers, halogenated fire extinguishers or Carbon dioxide fire extinguishers with dioxygen dioxide, but carbon dioxide fire extinguishers equipped with metal horn nozzles are not allowed ...
Electrical fire belongs to category C fire
Selection of Class C fire extinguishers: Class C fire sites should choose ammonium phosphate dry powder fire extinguishers, sodium bicarbonate dry powder fire extinguishers, halogenated alkane fire extinguishers or carbon dioxide fire extinguishers, but carbon dioxide fire extinguishers equipped with metal horn spray cylinders should not be used.
There are many types of fire extinguishers, which can be divided into: portable type and cart type according to their moving mode; according to the power source driving the fire extinguishing agent, they can be divided into: gas cylinder type, pressure storage type,
Chemistry
Reactive type, according to the filled fire extinguishing agent, can be divided into: foam, dry powder, halogenated alkyl, carbon dioxide, acid and alkali, water, etc.
The three types of fire extinguishers abc, bc, and bcd correspond to the following five types of fire types.
The types of fires are divided into the following 5 categories according to the igniting substance and its burning characteristics:
Class A fire: refers to a fire that burns carbon-containing solid combustibles, such as wood, cotton, wool, hemp, paper, etc .;
Class B fires: fires involving the burning of nails, B, and C liquids, such as gasoline, kerosene, diesel, methanol, ether, and acetone;
Class C fire: refers to the fire of combustible gas, such as coal gas, natural gas, methane, propane, acetylene, hydrogen, etc .;
Class D fire: refers to the fire of combustible metals, such as potassium, sodium, magnesium, titanium, zirconium, lithium, aluminum-magnesium alloy, etc .;
At present, dry powder fire extinguishing agents on the market are generally divided into two categories: BC dry powder and ABC dry powder. BCD dry powder for extinguishing D fires is now rarely produced; new products emerging on the market: the performance of ultrafine dry powder fire extinguishing agents should also be included in the In the category, although the fire extinguishing efficiency of ultra-fine dry powder is much greater than that of ordinary ABC dry powder, the fire extinguishing type is the same as that of ordinary ABC dry powder extinguishing agent, which can extinguish ABC fires and live equipment fires.
1. BC dry powder fire extinguishing agent: BC dry powder can extinguish BC fire. It is suitable for the initial fire of flammable and combustible liquid, gas and live equipment, but not for the fire of solid materials. Therefore, in distribution rooms, kitchens, machine rooms and other places where flammable liquid gas fires and live fires are likely to occur, BC dry powder fire extinguishing agents can be equipped. But these places are often not pure liquid and gas fires; therefore, such places are also mostly equipped with ABC dry powder fire extinguishing agents.
2. ABC dry powder fire extinguishing agent: This type of fire extinguishing agent can extinguish solid, liquid, gas and live equipment fires, and has the widest scope of application. It can be used in various public places, office spaces, hotels, restaurants, automobiles, ships, and even families, but it cannot be used to extinguish metal fires. At present, there are many places that should be equipped with ABC dry powder fire extinguishers, but they are wrongly equipped with BC dry powder; for example, some restaurants are equipped with BC dry powder, and from the comprehensive study of the fire situation, most of the restaurant fires are combustible solid materials. At this moment, if the BC dry powder fire extinguisher is used to extinguish the fire, the effect will not be significant, and it may even delay the time to extinguish the fire and cause greater economic losses.
Electrical fire belongs to category C fire
Therefore, electrical fire sites should choose ammonium phosphate dry powder fire extinguishers, sodium bicarbonate dry powder fire extinguishers, haloalkane fire extinguishers or carbon dioxide fire extinguishers, but carbon dioxide fire extinguishers equipped with metal horn nozzles should not be used.
In addition, there are many types of fire extinguishers, which can be divided into:
Portable type and cart type; according to the power source of driving fire extinguishing agent, it can be divided into: gas cylinder type, pressure storage type, chemical reaction type, and according to the filled fire extinguishing agent, it can be divided into: foam, dry powder, halogenated alkyl, Carbon dioxide, acid and alkali, clean water, etc.
The types of fires are divided into the following 5 categories according to the igniting substance and its burning characteristics:
Class A fire: refers to a fire that burns carbon-containing solid combustibles, such as wood, cotton, wool, hemp, paper, etc.
Class B fires: fires involving burning of nails, B, and C liquids, such as gasoline, kerosene, diesel, methanol, ether, acetone, etc.
Class C fire: refers to the fire of combustible gas, such as gas, natural gas, methane, propane, acetylene, hydrogen, etc.
Class D fire: refers to a fire that burns combustible metals such as potassium, sodium, magnesium, titanium, zirconium, lithium, aluminum-magnesium alloy, etc.
According to GB 501402005 'Code for design of configuration of fire extinguishers in buildings', electrical fire belongs to category E fires. Selection of E fire extinguishers: Class E fire sites should choose ammonium phosphate dry powder fire extinguisher channels, sodium bicarbonate dry powder fire extinguishers, halogenated alkanes Fire extinguishers or carbon dioxide fire extinguishers, but carbon dioxide fire extinguishers equipped with metal right horn nozzles shall not be used.
Carbon dioxide gas can be excluded from the air and surrounded on the surface of the burning object or distributed in a more closed space, reducing the oxygen concentration around the combustibles or in the protective space, causing suffocation and extinguishing.
In addition, when carbon dioxide is ejected from the storage container, it will quickly vaporize from liquid to gas, and absorb part of the heat from the surroundings to play a cooling role.
According to GB 501402005 'Code for Design of Configuration of Fire Extinguishers in Buildings', electrical fires belong to the selection of Class E fires and Class E fire extinguishers: the source of Class E fires should choose ammonium phosphate dry powder fire extinguishers, sodium bicarbonate dry powder fire extinguishers, halogenated fire extinguishers or Carbon dioxide fire extinguishers with dioxygen dioxide, but carbon dioxide fire extinguishers equipped with metal horn nozzles are not allowed ...
Electrical fire belongs to category C fire
Selection of Class C fire extinguishers: Class C fire sites should choose ammonium phosphate dry powder fire extinguishers, sodium bicarbonate dry powder fire extinguishers, halogenated alkane fire extinguishers or carbon dioxide fire extinguishers, but carbon dioxide fire extinguishers equipped with metal horn spray cylinders should not be used.
There are many types of fire extinguishers, which can be divided into: portable type and cart type according to their moving mode; according to the power source driving the fire extinguishing agent, they can be divided into: gas cylinder type, pressure storage type,
Chemistry
Reactive type, according to the filled fire extinguishing agent, can be divided into: foam, dry powder, halogenated alkyl, carbon dioxide, acid and alkali, water, etc.
The three types of fire extinguishers abc, bc, and bcd correspond to the following five types of fire types.
The types of fires are divided into the following 5 categories according to the igniting substance and its burning characteristics:
Class A fire: refers to a fire that burns carbon-containing solid combustibles, such as wood, cotton, wool, hemp, paper, etc .;
Class B fires: fires involving the burning of nails, B, and C liquids, such as gasoline, kerosene, diesel, methanol, ether, and acetone;
Class C fire: refers to the fire of combustible gas, such as coal gas, natural gas, methane, propane, acetylene, hydrogen, etc .;
Class D fire: refers to the fire of combustible metals, such as potassium, sodium, magnesium, titanium, zirconium, lithium, aluminum-magnesium alloy, etc .;
At present, dry powder fire extinguishing agents on the market are generally divided into two categories: BC dry powder and ABC dry powder. BCD dry powder for extinguishing D fires is now rarely produced; new products emerging on the market: the performance of ultrafine dry powder fire extinguishing agents should also be included in the In the category, although the fire extinguishing efficiency of ultra-fine dry powder is much greater than that of ordinary ABC dry powder, the fire extinguishing type is the same as that of ordinary ABC dry powder extinguishing agent, which can extinguish ABC fires and live equipment fires.
1. BC dry powder fire extinguishing agent: BC dry powder can extinguish BC fire. It is suitable for the initial fire of flammable and combustible liquid, gas and live equipment, but not for the fire of solid materials. Therefore, in distribution rooms, kitchens, machine rooms and other places where flammable liquid gas fires and live fires are likely to occur, BC dry powder fire extinguishing agents can be equipped. But these places are often not pure liquid and gas fires; therefore, such places are also mostly equipped with ABC dry powder fire extinguishing agents.
2. ABC dry powder fire extinguishing agent: This type of fire extinguishing agent can extinguish solid, liquid, gas and live equipment fires, and has the widest scope of application. It can be used in various public places, office spaces, hotels, restaurants, automobiles, ships, and even families, but it cannot be used to extinguish metal fires. At present, there are many places that should be equipped with ABC dry powder fire extinguishers, but they are wrongly equipped with BC dry powder; for example, some restaurants are equipped with BC dry powder, and from the comprehensive study of the fire situation, most of the restaurant fires are combustible solid materials. At this moment, if the BC dry powder fire extinguisher is used to extinguish the fire, the effect will not be significant, and it may even delay the time to extinguish the fire and cause greater economic losses.
Electrical fire belongs to category C fire
Therefore, electrical fire sites should choose ammonium phosphate dry powder fire extinguishers, sodium bicarbonate dry powder fire extinguishers, haloalkane fire extinguishers or carbon dioxide fire extinguishers, but carbon dioxide fire extinguishers equipped with metal horn nozzles should not be used.
In addition, there are many types of fire extinguishers, which can be divided into:
Portable type and cart type; according to the power source of driving fire extinguishing agent, it can be divided into: gas cylinder type, pressure storage type, chemical reaction type, and according to the filled fire extinguishing agent, it can be divided into: foam, dry powder, halogenated alkyl, Carbon dioxide, acid and alkali, clean water, etc.
The types of fires are divided into the following 5 categories according to the igniting substance and its burning characteristics:
Class A fire: refers to a fire that burns carbon-containing solid combustibles, such as wood, cotton, wool, hemp, paper, etc.
Class B fires: fires involving burning of nails, B, and C liquids, such as gasoline, kerosene, diesel, methanol, ether, acetone, etc.
Class C fire: refers to the fire of combustible gas, such as gas, natural gas, methane, propane, acetylene, hydrogen, etc.
Class D fire: refers to a fire that burns combustible metals such as potassium, sodium, magnesium, titanium, zirconium, lithium, aluminum-magnesium alloy, etc.
According to GB 501402005 'Code for design of configuration of fire extinguishers in buildings', electrical fire belongs to category E fires. Selection of E fire extinguishers: Class E fire sites should choose ammonium phosphate dry powder fire extinguisher channels, sodium bicarbonate dry powder fire extinguishers, halogenated alkanes Fire extinguishers or carbon dioxide fire extinguishers, but carbon dioxide fire extinguishers equipped with metal right horn nozzles shall not be used.
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