to this area shall be provided in accordance with Industrial Ventilation, A
Manual of Recommended Practice.
c.
Air Conditioning. Air conditioning shall be provided in offices and
administrative areas as allowed by policy in Department of Defense
Construction Criteria Manual, DOD 4270.1-M. Air conditioning shall be provided
in accordance with NAVFAC DM-3.3. Automatic thermostatic control shall be
provided and equipment shall be shut down when not required for cooling.
d.
Exhaust Systems. Exhaust systems shall be provided for the general
repair bays and certain direct support areas in accordance with NAVFAC DM-3.3.
The exhaust systems shall be mechanical ventilation systems designed and sized
for efficient, energy conserving operation. For large facilities with numerous
general repair bays, consideration shall be given to providing several exhaust
systems rather than one exhaust system for a group of general repair bays. The
use of several exhaust systems would reduce the size of the exhaust fans and
minimize the need for operating a large fan when only a few bays are being
used. An analysis should be made to determine the most energy efficient
operation. The exhaust systems shall be provided for the areas listed and in
accordance with the following additional requirements:
(1)
General Repair Bays (Automotive). General repair bays
designated for inspection, service, and repair of automotive equipment shall
be equipped with an underfloor or overhead exhaust system as determined by
projected usage and cost effectiveness.
(2)
General Repair Bays (Construction/Weight-Handling Equipment).
General repair bays designated for inspection, service, and repair of
construction/weight-handling equipment shall be equipped with an overhead
exhaust system with retractable flexible tubing outlets. When an overhead
bridge crate is installed, powered roof mounted exhaust fans may be used for
exhaust fume removal in lieu of the flexible tubing system. The roof mounted
exhaust fans shall be sized and located for energy efficient operation.
(3)
Dynamometer Test Bay. Exhaust system requirements for this
bay are more extensive than for standard shop exhaust systems. The bay shall
be equipped with an overhead exhaust system capable in size and capacity to
remove excessive smoke and exhaust fumes which are generated from operating an
engine under full load.
(4) Battery Service and Repair Bay. This bay shall be equipped
with an exhaust system and battery charging equipment in accordance with cri-
teria in this manual, Section 5, Part 6.
(5)
Paint and Lettering Bay. This work bay, unless otherwise
specified, shall be equipped with an exhaust system capable of removing vapors
and gases from cleaners, solvents, and paints. The exhaust system shall be in
accordance with requirements in NFPA 33.
(6) Body Repair and Welding Bay. The area designated for welding
and body grinding shall be equipped with an exhaust system, with several
flexible tubing outlets. These outlets are used to exhaust cutting and welding
fumes from the work tables.
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