6 for the operation platform and maintenance platform in the plant, when the number of users is less than 10, the area of the platform may not be included in the building area of the fire compartment.
When the process conditions permit, firewalls shall be used for separation.
4.
Among them, the wire making, wire storage and winding car room can be divided into a fire compartment, and the maximum allowable building area of each fire compartment can be determined according to the process requirements.
However, the wire making, wire storage and winding car room shall be separated by a fire partition with a fire resistance limit of not less than 2.00h and a floor slab of 1.00h.
3 for coal homogenization silo with class I and II fire resistance rating, the maximum allowable building area of each fire compartment shall not be greater than 12000m ²。 4 for independently built ammonium nitrate warehouse, calcium carbide warehouse, polyethylene and other polymer products warehouse, urea warehouse, coal blending warehouse and independent finished product warehouse of paper mill, when the fire resistance rating of the building is not lower than grade II, the maximum allowable floor area of each warehouse and the maximum allowable building area of each fire compartment can be increased by 1.0 times according to the provisions of this table.
Note: 1 fire compartments shall be separated by firewall.
The production rooms for raw materials, material preparation and group formula, silk making, silk storage and wrapping, auxiliary material turnover, temporary storage of finished products, carbon dioxide expanded cut tobacco and other production rooms in the class I and II fire-resistant cigarette production complex shall be divided into independent fire separation units.
3.3.2 unless otherwise specified in this specification, the number of floors and area of the warehouse shall comply with the provisions of table 3.3.2.
The maximum allowable building area of each fire compartment of single and multi-storey paper production complex with class I and II fire resistance rating can be increased by 1.5 times according to the provisions of this table.
1、 For the wet papermaking complex with class II fire resistance rating, when the automatic fire extinguishing system is set in the dryer cover of the paper machine and the effective fire extinguishing facilities are set in the completed section, the maximum allowable building area of each fire compartment can be determined according to the process requirements.
3.2.9 the fire endurance of firewalls in class A and class B plants and class A, class B and class C warehouses shall not be less than 4.00h.
For more highlights, please click the blue word above to follow us! 3.2.2 for high-rise plants, the fire resistance rating of class A and class B plants shall not be lower than class II, and the building area shall not be greater than 300m ² Independent class A and class B single storey plants can adopt buildings with class III fire resistance rating.
The maximum allowable floor area of grain bungalow warehouse with class I and II fire resistance rating shall not be greater than 12000m ²， The maximum allowable building area of each fire compartment shall not be greater than 3000m ²； The maximum allowable floor area of grain bungalow warehouse with class III fire resistance rating shall not be greater than 3000m ²， The maximum allowable building area of each fire compartment shall not be greater than 1000m ²。 6.
3.2.15 for the accessible flat roof of class I and II fire resistance rating plant (warehouse), the fire resistance limit of roof slab shall not be less than 1.50h and 1.00h respectively.
3.
2 except for hemp textile plant, the maximum allowable building area of each fire compartment of multi-storey textile plant with class I fire resistance rating and single and multi-storey textile plant with class II fire resistance rating can be increased by 0.5 times according to the provisions of this table, but the raw cotton unpacking and flower cleaning workshop in the plant and other parts in the plant shall be separated by fire partition with fire resistance limit of not less than 2.50h, When it is necessary to open doors, windows and openings, class a fire doors and windows shall be set.
3.2.3 the fire resistance rating of single and multi-storey class C plants and multi-storey class D and e plants shall not be lower than grade III.
The firewalls between the fire compartments in class A and class B warehouses shall not be provided with doors, windows and openings; The maximum allowable floor area of underground or semi underground warehouses (including underground or semi basement) shall not be greater than the maximum allowable floor area of corresponding aboveground warehouses.
3.2.4 the fire resistance rating of buildings that use or store special and valuable machines, instruments, instruments and other equipment or articles shall not be lower than grade II.
The fire compartments in the warehouse must be separated by firewalls.
5.
3.2.7 the fire resistance rating of elevated warehouse, high-rise warehouse, class a warehouse, multi-layer class B warehouse and multi-layer class C warehouse storing combustible liquid shall not be lower than class II.
When the building area of the fire compartment of class I and II fire rated plants other than Class A plants is larger than that specified in this table and it is difficult to set up a firewall, they can be separated by fire rolling shutter or fire separation water curtain.
5.
When the fireproof rolling shutter is adopted, it shall comply with the provisions of article 6.5.3 of this specification; When the fire-proof water curtain is used, it shall comply with the provisions of the current national standard code for design of automatic sprinkler system (gb50084).
The fire resistance rating of plants that use or produce class C liquid and class D plants with sparks, red hot surface and open fire shall not be lower than grade II; When the building area is not more than 500m ² Single storey class C plant or building area of no more than 1000M ² For Single-storey class D plant, buildings with class III fire resistance rating can be used.
3.3.1 unless otherwise specified in this specification, the number of floors of the plant and the maximum allowable building area of each fire compartment shall comply with the requirements in table 3.3.1.
2 the barreled oil warehouse in the oil reservoir area shall comply with the provisions of the current national standard code for design of oil depots (gb50074).
Class I and II fire resistance rating and the floor area shall not be greater than 2000m ² The maximum allowable building area of the fire compartment of the single-layer cotton warehouse shall not be greater than 2000m ²。.
For grain silo working tower with class I and II fire resistance rating, when the number of workers on each floor does not exceed 2, the number of floors is unlimited.
Note: 1.
The openings between the horizontal and vertical fire compartments in the plant shall take measures to prevent the spread of fire.
7 “-” means not allowed.
