E.
Include sufficiently sized and properly constructed storage
space for the gas cylinders with manifold systems. Primary and
reserve banks are required for cylinder gas sources.
F.
The medical air compressors and medical vacuum pumps shall
serve the medical air and medical vacuum systems only.
G.
Locate compressors and pumps in a
clean, relatively cool
environment [i.e., not with steam
equipment, not to exceed 38
degrees C (100 degrees F) ambient
temperature]. Locate
equipment in an area where it can
be monitored regularly.
H.
Medical air
compressors and vacuum pumps shall be multiplexed
with single
receivers. Size compressors and pumps such that
100 percent
of the design load is carried with the largest
single unit
out of service. Provide three-valve bypass at
receiver.
I.
Air compressors shall be a type that provides "Medical
Compressed Air", as defined by NFPA 99.
J.
Design air dryers, filters and pressure regulators for the
medical air system in duplex, each sized for 100 percent of
the load using duplex twin tower desiccant dryers. Include
continuous line dewpoint and carbon monoxide monitoring
downstream of the filters and regulator.
K.
Locate the medical air compressor system intake outdoors above
roof level, at least 7.5 m (25 feet) (may be more depending
upon prevailing wind direction and velocity) from any building
opening or other intake, and where no contamination from
engine exhausts, fuel storage vents, vacuum system discharges,
particulate matter or odor of any type is anticipated. Air
that is already filtered for ventilation system use is an
acceptable source of air for medical air compressors. Combined
intakes must be sized for no restriction while flowing maximum
intake possible, and provided with an isolation valve at the
header for each compressor served.
L.
Combine discharge from each medical vacuum pump into one
discharge pipe, sized for no restriction while flowing maximum
discharge possible, and provide an isolation valve at the
header for each pump served. Exhaust discharge at the highest
point of the building, above and at least 7.5 m (25 feet)
horizontally (may be more depending upon prevailing wind
direction and velocity) from any intake, door, window,
louvered or ventilating opening of the building.
11.5
Piping Systems:
A.
Design pressure piping systems not to exceed 35 kPa (5 psi)
loss from source to point of use. Design vacuum piping systems
not to exceed 10 Pa (3 inches Hg) from source to point of use.
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