Fire and explosion prevention issues in Class A factories

Please refer to the Code for Fire Protection Design of Building Structures or the Code for Fire Protection Design of Petrochemical Enterprises.

In accordance with the requirements of the Building Code, it is necessary to first determine the fire resistance rating and fire compartments

In response to the original poster’s question, the first step is to determine whether it is a facility or a factory building. However, in many places, Class A factory buildings require separate stairwells, and auxiliary rooms such as control rooms need to be separated from Class A areas by firewalls. If there are flammable gases in the Class A workshop, the doors and windows must be designed in accordance with GB50058-92. For specific details, refer to GB50016-2006

Firstly, the fire resistance rating must not be lower than grade II. Regarding the requirements for the stairwell, I think three staircases are necessary, as it is required that the distance from any point within the factory to the safety exit be no more than 25 meters. If only two staircases are used, they cannot be located on opposite sides of the factory; it is still necessary to ensure that the distance from any point within the factory to the safety exit remains at most 25 meters. The net width of stairs should not be less than 1.1 meters; otherwise, they cannot be used as emergency evacuation stairs. I don’t know what the instrument room is used for; control rooms, electrical instrument rooms, power distribution rooms, laboratories, etc. should not be located inside the factory building.

If the factory building is of frame structure, does the staircase need to be a enclosed staircase? What is the method for constructing an explosion-proof door vestibule?

Even for factory buildings with a frame structure in Category A, it is necessary to design enclosed stairwells. Reference can be made to GB50016-2006 \"Code for Fire Protection Design of Buildings\" and GB50160-1992 \"Code for Fire Protection Design of Petrochemical Enterprises\".

1. Evacuation must be carried out properly. The distance from any point within the factory building to the safety exit must not exceed 25 meters. 2. The instrument room and similar areas must be separated from the factory building by firewalls; if the control room needs to have an unobstructed view of the factory interior, fire-resistant windows can be used. 3. Ventilation. Conditions must be provided to the ventilation team, such as the properties of the materials, their explosive limits, and the amount of emissions, so that they can carry out a ventilation design based on the required number of ventilation cycles or local ventilation needs. If the instrument room, control room, etc. are located in an explosion-hazardous area, positive pressure ventilation or other measures must also be implemented. 4. All electrical components must be explosion-proof. The rating and group of explosion-proof electrical equipment should be selected appropriately based on the properties of the materials.

Are the electrical equipment in the control room upstairs also explosion-proof?

According to 3.7.6 of GB50016-2006, it is not necessary to design enclosed stairwells; outdoor stairs can be used instead, which differs from the older versions of the building codes. For fire and explosion prevention issues, in addition to GB50016 and GB50160, design should also be carried out in accordance with GB50058, etc.; SH3038 and HG/T20687 can also be used as references. This post was last edited by GHJDSM on 2009-1-6 10:06.]

Generally speaking, the control rooms in Class A factories are separated from the production area by explosion-proof walls made of non-combustible materials, and they have separate safety exits; since they are located in non-hazardous areas, explosion-proof versions are not necessary. But if it’s used on-site, it must be explosion-proof.