Fire separation distance between the power distribution room and Class A factories
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I would like to ask: Regarding the fire separation distances between high and low voltage substation rooms in factory areas and Class A factories as well as Class A warehouses, which provision of the building codes should be applied? Should it be Article 3.5.1 of the building codes, which stipulates that the fire separation distance between Class A warehouses (>10 tons, per item 1.2.5.6) and open-flame sources is 30 meters, or should it be Article 3.4.1, which specifies that the distance between Class A factories and outdoor substations and transformers is 25 meters?
It’s better to use a longer distance; the safety factor is higher that way
This should be calculated based on indoor conditions; I think neither of these two options applies. Clause 3.3.8 applies – it stipulates that the device should not be located adjacent to other elements, nor within an area prone to explosions. It depends on how the explosion-risk areas for Class A devices are defined in your case. It becomes clear by looking at clause 5.3.5 of GB50058.
The explanation on the 3rd floor was quite clear. As a supplementary point regarding fire separation distances: for Class A warehouses, higher standards apply, and in accordance with Article 3.5.1 of GB50016, the distance from such warehouses to factories should be 15 meters； If it is a Class A workshop, Article 3.4.1 of GB50016 shall be applied: the distance between Class A workshops and Class C workshops should be 12 meters, provided that this is within an area free from explosion hazards.
It’s so scary – it’s already over ten meters long; isn’t that misleading for people? First, determine which category Class A falls under, and decide whether the power distribution uses a dry-type transformer or an oil-type transformer. Then, Class A factories and Class A warehouses should apply the relevant provisions of 3.4.1 and 3.5.1 respectively