Analysis of common problems at fire acceptance site – fire door 1

Acceptance items:Fire separation

On-site problem description 1:

The fire door is not equipped with a door closer, and the double fire door is not equipped with a sequencer.

When the normally open fire door is a sub-door, there is no door closer on the sub-door.

Relevant specification requirements:

\”Code for Fire Protection Design of Buildings\” GB50016-2014 (2018 Edition):

6.5.1 The setting of fire doors should comply with the following regulations:

3. Except for tube well access doors and residential doors, fire doors should have a self-closing function.

\”Code for Construction and Acceptance of Fireproof Roller Shutters, Fireproof Doors, and Fireproof Windows\” GB50877—2014:

5.3.2 Normally closed fire doors should be equipped with door closers, and double-leaf and multi-leaf fire doors should be equipped with sequencers.

Onsite problem description 2:

The evacuation doors in some parts are not equipped with Class A fire doors, such as the doors of the smoke prevention and exhaust machine room opening into the building, the doors of the evacuation aisles in the fire protection zone, Doors in underground garages opening to residential evacuation stairwells, doors on firewalls, etc.

The civil air defense area is adjacent to the fire protection zone. Only civil air defense doors are seen, and no Class A fire doors are installed.

Relevant specification requirements:

\”General Specifications for Building Fire Protection\” GB55037—2022:

6.4.2 Doors in the following locations should be Class A fire doors:

1. Doors set on the fire wall and doors set on the fire zone for evacuation corridors;

2. Set up a fire partition wall with a fire resistance limit of not less than 3.00hdoor;

3. Elevator room, The door connecting the evacuation stairwell to the garage;

4. Indoor doors opening to the front room of the evacuation corridor and evacuation doors in the evacuation room;

5. Doors leading from the warehouse to evacuation walkways or evacuation stairwells in multi-story Category B warehouses and underground, semi-underground and multi- and high-rise Category C warehouses.

6.4.5 Civilian air defense projects in daily use The fire resistance of protective doors, protective airtight doors, and airtight doors that replace Class A fire doors should not be lower than the requirements of Class A fire doors, and should not be used for evacuation exits in commonly used public places.

\”Code for Fire Protection Design of Buildings\” GB50016—2014 (2018 edition):

6.2.7 The doors of ventilation, air conditioning machine rooms and power transformation and distribution rooms that open into the building should use Class A fire doors, and the fire control room and other equipment rooms open to the doors in the building. Doors should be Class B fire doors.

\”Technical Specifications for Fire Water Supply and Fire Hydrant Systems\” GB50974—2014：

5.5.12 The fire pump room shall comply with the following requirements:

3. The fire pump room attached to the building should be separated from other parts by partition walls with a fire resistance rating of not less than 2.00h and floors of 1.50h. Its evacuation door should lead directly to the safety exit and open Doors to evacuation corridors should be Class A fire doors

\”Code for Fire Protection Design of Garages, Repair Garages and Parking Lots\” GB50067-2014:

6.0.7 For underground garages and semi-underground garages connected to residential basements, evacuation stairs in the residential part can be used for personnel evacuation; when it is not possible to directly enter the evacuation stairwell in the residential part, an evacuation staircase should be installed between the garage and the residential part. The connecting aisles should be separated by fire-resistant partition walls, and the doors of the garage opening to the aisles should be Class A fire-resistant doors

On-site problem description 3:

The underground storage room does not use Class B fire doors;

The public kitchen in a public building is not separated from other parts as required by regulations.

Related specification requirements:

\”Code for Fire Protection Design of Buildings\” GB50016-2014 (2018 Edition):

6.2.3 The following parts of the building should be separated from other parts by fire partition walls with a fire resistance rating of not less than 2.00h. Doors and windows on the wall should be Class B fire doors and windows. If there are difficulties, fire shutters can be used, but Shall comply with the provisions of Article 6.5.3 of this specification:

4. Affiliated warehouses in civil buildings and auxiliary rooms behind theaters;

5. In addition to kitchens in residential buildings, public kitchens in dormitories and apartment buildings and kitchens in other buildings;

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