Good (?) morning,
I am trying to determine the minimum exhaust for hydrogen gas (not liquified) and see that in NFPA 55, section 6.17.3.2 requires a minimum exhaust of 1 scf/min/ft2. I had to look up scf--it is 'standard cubic foot' and is defined as 1 cubic foot of natural gas at 60F and normal atmospheric pressure.
If I know the size of the room and air changes per hour, is it possible to calculate my exhaust without doing an experiment?
MANY thanks!
Margaret
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Margaret A. Rakas, Ph.D.
Lab Safety & Compliance Director
Clark Science Center
413-585-3877 (p)
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