Question: What type of facility should a workshop that uses phosphoric acid be classified as? Class V?

2020-09-18View Original

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Question: What type of facility should a workshop that uses phosphoric acid be classified as? Class V?

Reply #22020-09-22

Further question: The safety assessment suggests that phosphoric acid and metals may produce hydrogen gas. Should the workshop take hydrogen issues into consideration?

Reply #32020-09-24

Isn’t it normal for phosphoric acid not to react when in contact with metals? If a reaction is to occur, it must be in a Class A workshop. Under normal conditions, phosphoric acid does not react with metals, and since there are no other substances of Classes A, B, C, or D present, it can be considered a Class E substance. However, it is also necessary to install proper top exhaust systems and lightning protection measures (taking into account hydrogen release in abnormal situations)

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