c.
Vehicle Exhaust Systems. For air station GEM shops where elec-
tronic and communications equipment in vehicles is serviced, a mechanical
vehicle exhaust system shall be provided to allow vehicles to run while mobile
communication equipment is being serviced. The vehicle exhaust system should
be an overhead system with retractable flexible tubing outlets or an
underfloor system.
d.
Plumbing. Plumbing shall be provided in accordance with NAVFAC
DM-3.1, and the following:
(1) Acid sinks and drains lined with acid-resisting material shall
be provided for areas where acids are used. A system shall be provided for
collecting acid wastes before they are dumped into the sanitary sewer system.
This collection system may be either dilution tanks or a holding tank with pH
adjustment.
(2)
Water wash curtain and drainage system shall be provided for
paint spray booths.
e.
Compressed and Vacuum Air. Compressed and vacuum air shall be sup-
plied in accordance with NAVFAC DM-3.5, and the following:
(1) Low pressure compressed air at workbenches shall be provided
in all shop areas.
(2)
A vacuum cleaning system with outlets shall be provided
throughout dust-free areas.
f.
Noise and Vibration Control. All mechanical systems shall be
designed to limit noise and vibration in accordance with NAVFAC DM-3.10.
5.
ELECTRICAL REQUIREMENTS. Electrical systems shall be provided in
accordance with NAVFAC DM-4 Series and as follows:
a.
Power Requirements.
(1) Single-phase, 120-volt, 20-ampere, 60-Hertz convenience outlets
are required in all spaces.
(2)
Three-phase 120/208-volt, 60-Hertz and 400-Hertz, and
three-phase, 220-volt and 480-volt, 400-Hertz power is required for shop
equipment. All 400-Hertz power supplies shall be regulated to eliminate error
in calibration of equipment.
(3)
Twenty-eight direct current power is required for shop equip-
ment.
(4)
The ampacity of three-phase and direct current outlets shall
be as required by the using agency for the specific area.
(5)
Suitable filters shall be provided for alternating and direct
current equipment in the radio section.
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