Fire doors are an important part of fire-fighting equipment and an important part of social fire prevention. Therefore, the quality and use of fire doors is the key to the success of fire prevention.
First, how to choose high quality fire doors
Fire doors are particularly important as the first function of home fire prevention. However, when you buy inferior fire doors, the fire doors are no longer fireproof. What should you do? The municipal fire departments have investigated and destroyed a batch of honeycomb paper instead of fireproof filling. The inferior fire door of the material, the firefighters introduced several measures to buy high-quality fire threshold. According to the regulations, steel and wooden fire doors can be divided into Class A, Class B and Class C according to fire endurance. The fire endurance requirements are 90 minutes, 60 minutes and 30 minutes respectively, and the wood used for making wooden fire doors needs to be carried out. Dry and flame retardant treatment, the hardware accessories used must also be fireproof hardware accessories.
There are three major measures for purchasing high-quality fire doors. The first measure is to check the appearance. The high-quality steel/fire door is welded firmly, the welding points are evenly distributed; the outer surface is smooth and smooth. The qualified wooden fire door should be complete in appearance, without damage, clean surface, no burrs, burrs and hammer marks; cut angles and seams should be tight and flat; product marks, quality inspection marks and quality should be provided at the specified positions. Certification (approval) pass mark.
The second measure is the number. The size of the qualified product should be less than or equal to the outer dimensions of the sample description. The thickness of the door should be greater than or equal to the thickness of the door in the sample description. The width of the side wall of the door should be greater than or equal to the width of the side wall of the door in the sample description. The outer dimensions of the fireproof glass shall be less than or equal to the outer dimensions of the fireproof glass in the sample description. The thickness of the fireproof glass shall be greater than or equal to the thickness of the fireproof glass in the sample description.
The third measure is to look at the seal. The qualified steel and wooden fire doors should be provided with fireproof sealing strips. The sealing strips should be straight and without arching, and there is a qualified inspection report issued by the national testing agency.
Second, a brief description of the Class C fire door
(The fire end of Class C fire door is 0.6h) 1. The inspection door on equipment tube well, air passage and garbage road wall shall be Class C fire door. 2. The front door of the garbage road should be a Class C fire door. 3. When the cable well and the pipeline well are installed in the front room of the smoke-proof stairwell and the front room is used together, the inspection door on the well wall should adopt Class C fire door.
4. The door inside the substation should be a Class C fire door. The door directly leading to the outdoor of the substation shall be a Class C fire door. 5. Cable wells and pipeline wells shall be fire-proof separated by non-combustible body equivalent to the fire resistance limit of the slab at every 2~3 floors, and the inspection door on the well wall shall adopt Class C fire doors. 6. The garbage bucket should be made of non-combustible and corrosion-resistant materials, and can close the closeness by itself; the garbage bucket of high-rise buildings and super high-rise buildings should be installed in the front of the garbage lane, and the front room should adopt Class C fire doors. 7. The telecommunications room should adopt an externally opened Class C fire door with a door width greater than 0.7m. 8. The oxygen busbars with an oxygen supply of not more than 60m3/h can be placed in the outer wall of the user's building not lower than the third-grade fire-resistant grade, and should have a height of 2.5m and a fire-resistance limit of not less than 1.5h. Wall and Class C fire doors are separated from the rest of the plant. 9. The partition wall of the collection warehouse and showroom should be non-combustion. The compartments in the fire zone shall be separated by a partition wall with a fire resistance of not less than 3 h and a Class B fire door. The enclosed structure of the enclosed shaft shall be a non-combustion body and a Class C fire door. 10. The partition wall between the production rooms with explosion hazard shall have a fire resistance limit of not less than 1.5h. The door is a Class C fire door. 11. Oxygen station or liquid oxygenation station and oxygen station, when placed in the same building, non-combustion walls and Class C fire doors with a fire resistance of not less than 1.5h shall be used. Through the walkway. 12. Class C fire doors shall be used for the doors between the oxygen compressor room and the bottling room, as well as between the clean room, the oxygen storage air bag, the oxygen storage tank, the liquid oxygen storage tank and other rooms.
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