Instrument air source driven by a compressor, should have at list 21% of oxygen partial pressure with 78% nitrogen with some contaminants output, air that is taken from an ambient air intake, either from indoor or outdoor my question is: why the inert gas Dry Nitrogen (N2) with only 1% oxygen and 99% nitrogen concentrations is not allowed or permitted to be into adequately ventilated indoor mechanical room enclosure together with (medical air compressor, surgical vacuum pump, WAGD system, & instrument air compressor) all in the same indoor room with a bank of reserve high pressure nitrogen cylinders header?, since oil-free dry nitrogen (NF) is an alternative to be used to high pressure instrument air.
The difference between Medical Air and Instrument Air is: the Instrument Air with 98% efficiency is cleanest,0.01 micron and driest, dew point -40 deg.F. and work in higher output pressure. Please let me know if my comments issue are correct, or not. Thank you very much.
Information obtained from NFPA 99,2012 & 2015 editions:
NFPA 99,2012 Miami, Florida adopted edition:5.1.3.3.1.3 / 5.1.3.3.3.2 / 5.1.3.3.4.2
NFPA 99,2015 MGHPHO, CMGV TEST:5.1.3.3.1.4 / 5.1.3.3.3.3 / 5.1.3.3.4
I'm verifying and inspecting a local hospital with the same issue, standing with all mechanical equipment together with nitrogen (NF) standby reserve cylinders header into the same adequately HVAC ventilated room enclosure.