Does the crushing room need to have an explosion-proof compartment along with other rooms?
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I would like to ask the experts: In the API workshop and grinding room, should they be separated from other storage areas and packaging rooms by explosion-proof walls? The minimum ignition energy of this material is unknown. Classified according to fire hazard categories, this solid dust can at most be considered category C – a combustible solid – but the amount of dust is quite large ； According to the design codes for electrical equipment in explosive hazardous environments, it seems to fall under the category of explosion-proof areas as well. I hope experts can give me some advice!
Are there any guidelines or standards for this?
As long as it is a combustible dust, an explosion has nothing to do with whether it belongs to Category A or Category C; what matters is whether the particle size is small enough and whether it can spread easily into the air. In a crushing room like yours, the risk is high, so it must definitely be treated as a dust explosion hazard area.