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API Standard For Tank Vents

API Standard For Tank Vents

API Standard For Tank Vents

(OP)
I do not have a copy of the API Standard for sizing tank vents and have not been able to find any information on line.

My problem is I have a closed tank which is vented inside the building. The fluid is not flamable but could give off H2S gas.

I would like to know how much air I should exhaust from the vent to outside to ensure the H2S gas doesn't escape through the overflow when there is a sudden change in liquid level.

Perhaps the API code isn't the proper one.

Any help appreciated, thanks.

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