Judgment on different fire hazards within the factory building
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This post was last edited by greygreyfly on 2024-10-15 07:51. Code Requirement 3.1.2 states that \"when there are operations with different fire hazards within the same factory building or any fire compartment of such a building, the fire hazard classification for the operations in that building or fire compartment shall be determined based on the part with the higher fire hazard.\"； When the amount of flammable or combustible materials used or generated during the production process is small enough as not to pose a risk of explosion or fire, it can be determined based on the actual circumstances ； When one of the following conditions is met, it can be determined based on the part with a lower fire hazard: 1. The proportion of the production area with a higher fire hazard to the total floor area or the area of that fire compartment is less than 5%. Does this area refer to the sum of the cross-sectional areas of these devices alone, or does it include the operating space around these devices, such as the distance to other types of equipment? If the operating space is also taken into account, how should it be calculated? Please give me some advice, sir.
According to Code for Building Design 3.1.2, when assessing the different fire hazards within a factory building or fire compartment, the term \"floor area\" generally refers to the total area including the equipment and its operating space. This means that it’s not just the footprint of the equipment itself that should be considered, but also the necessary operating and maintenance space around it. When calculating, you should measure the total area from the outermost edges of each device to the safe operating distance. This includes safe distances between equipment, as well as safe distances from equipment to factory walls or other obstacles. This total area is used to compare with the total building area of the entire floor or fire compartment, in order to determine whether the condition of not exceeding 5% is met. If the area of this section is less than 5% of the total area, the fire hazard level of the factory building or fire compartment can be determined according to the category with a lower fire hazard. .
Thank you! I didn’t get enough points; I’ll make up for it later
This post was last edited by greygreyfly on 2024-10-15 08:07. Hello! I have another question. For example, consider a Class E factory building with an area of 1,000 square meters. Within it, there are some pieces of equipment classified as Class A and Class B located adjacent to each other. The Class A equipment occupies 20 square meters, while the Class B equipment covers 45 square meters. Should this area be classified as Class B? Or, since the area occupied by Class A equipment exceeds 5% of the total area, should the Class B area also be upgraded to Class A, thereby making the entire workshop fall under Class A? Or, since neither area meets the 5% threshold individually, should the entire factory building still be classified as Class E?
For 5%, measures need to be taken to separate high-risk areas from low-risk areas; I believe this involves using fire prevention measures to enclose such areas, for example, the space where Class A equipment is located
There aren’t enough points either. Thank you for your guidance. Which regulation stipulates that high-risk areas need to be enclosed?
Explanation of Code for Building Design 3.1.2
The equipment and the surrounding operating space should be separated by fire-resistant partitions when necessary