Address: Kangcheng International Building, the intersection of Hongyuan Road and Ganggang Avenue, Nancheng District, Dongguan City
1. The minimum design concentration for extinguishing combustible liquid fires, meltable solids fires, combustible gas fires, combustible solid surface fires, and electrical fires should be 37.5%; 2. The minimum design concentration of some combustible liquids can be determined according to Appendix B; 3. The maximum design concentration of a protected area where people work often is 43%, and it should be reviewed under the expected maximum ambient temperature conditions of the protected area. 4. When there are multiple combustibles, the design concentration of the extinguishing agent should be determined according to the design concentration of combustibles with a large number of combustibles and a high risk of fire; 5. Inertization should be used for the protection area with explosion danger The concentration can be determined according to Appendix C.
1. Each protective area must be designed separately; 2. The design amount of fire extinguishing agent is determined according to the largest amount of fire extinguishing agent in the protective area protected by the system, and the protective area with a small amount of fire extinguishing agent should be restricted by safe concentration; 3 The selection valve can be installed upstream or downstream of the pressure relief plate. If the pressure reducing orifice is upstream of the selection valve, the length from the pressure reducing orifice to the first tee should not be less than 10 times the pipe diameter; 4. When designing the manifold of the combined distribution system, it must be on the starting line Install check valve.
1. Electrical and electronic equipment room. 2. Communication equipment room. 3. The state protects metal, paper and silk products and audiovisual archives in cultural relics. 4. Flammable and combustible liquid storage room. 5. Before the fire extinguishing agent is sprayed, the flammable gas fire dangerous place where the flammable and combustion-supporting gas source can be cut off. 6. Protective area where people are often working.
The required IG541 volume per unit volume of the protective zone volume at the specified fire concentration and ambient temperature.
Maintaining the extinguishing agent concentration specified in the design guarantees the time required to completely extinguish the fire.
The minimum concentration of IG541 required to inertize a flammable gas-air mixture to prevent it from exploding.
The lowest concentration at which a physiological or toxic effect can be observed.
The highest concentration that had no effect on physiological or toxic effects was observed.
The minimum volume percentage of IG541 and IG541 and air mixture required to extinguish a certain type of fire under 101.3kPa atmospheric pressure and specified temperature conditions.
An opening provided on the outer wall or top of the protective area to release the internal pressure of the protective area.
Use one IG541 storage device to protect two or more fire protection systems.
An enclosed space surrounded by a fixed enclosure and meeting the fire suppression requirements of the IG541 fire extinguishing system.
Use a IG541 storage device to individually protect a fire protection system in a protected area.
It consists of fire extinguishing agent storage device, fire extinguishing agent delivery pipe, valve, nozzle, alarm and control device, etc., and sprays a certain concentration of IG541 into the protective area within a prescribed time, and makes it evenly fill the entire fire protection system of the protective area.
A mixed gas prepared by 52% by volume of nitrogen N2, 40% of argon Ar, and 8% of carbon dioxide CO2, referred to as IG541.
The carbon dioxide fire extinguishing agent storage device is composed of a storage container, a container valve, a storage container frame, a high-pressure metal hose, a header, a safety valve, a pressure switch, a check valve, and a selection valve.
The starting disk device consists of a high-pressure nitrogen starting bottle, a container valve, a starting frame, and a starting pipe.
The high-pressure carbon dioxide fire extinguishing system is composed of a carbon dioxide fire extinguishing agent storage device, a starter bottle device, and a pipe network system. The fire extinguishing system can work independently or interlock with the fire detection alarm system and fire control system.
A fire extinguishing system that directly injects carbon dioxide at the injection rate to the protected object and lasts for a certain period of time. The carbon dioxide fire extinguishing agent is sprayed as a liquid. Applicable conditions: open space.
Within a specified time, spray a prescribed amount of carbon dioxide into the protective area and make it evenly fill the entire fire protection system of the protective area. The carbon dioxide fire extinguishing agent was sprayed in a mist form. Applicable conditions: Limited enclosed space.