(1) Air exhausted from the shops shall be removed at the highest
point of the ceiling which will be at the back of the building.
The exhaust fan for the NICAD shop shall be sized to provide
a minimum of one air change per hour. The exhaust fan should be sized larger
when outdoor air can be used to limit shop temperature to 85 OF.
(3) The exhaust fan for the lead acid shop shall be sized to provide
a minimum of 3 air changes per hour. The exhaust fan should be sized
larger when required for mechanical ventilation cooling. The fan shall have a
nonsparking wheel and the motor shall be located out of the airstream. The
ventilation system for the shop shall be designed to provide a negative static
pressure by exhausting 10 percent more air than is supplied. Supply air for
the shop shall be 100 percent outside air.
Exhaust fan for the toilet in the central core area shall be
2 cfm per square foot of toilet floor area.
The exhaust vents in the battery shops shall be at the back
of the building. Also, the exhaust and the air supply vents shall be the only
recessed items in the ceiling of the shops.
Plumbing. Plumbing shall be provided in accordance with NAVFAC
DM-3.1 and as follows:
Acid-resistant and alkali-resistant floor drains shall be
provided in the lead acid and NICAD shops, respectively.
Emergency shower and eyewash facilities shall be provided
with acid-resistant and alkali-resistant floor drains in the lead acid and
NICAD shops, respectively. These facilities shall be provided within 25 feet
(1620 mm) of the battery handling areas.
Provide fiberglass holding tank (underground or above-ground)
for waste electrolyte. Underground tank shall be located in a concrete
containment pit with removeable waterproof cover. Above-ground tank shall be
located on concrete slab with concrete berm around perimeter which provides
containment' equal to tank volume plus 10 percent. Tank shall be located to
provide gravity drainage from dump sinks. Provide float type level indicator,
pump out connection and vent on holding tank. Sections through tanks are
provided as FP No,. 218-50, sheet 5.
Acid-resistant and alkali-resistant dump sinks shall be
provided in the lead acid and NICAD shops, respectively. The sinks shall
empty into a holding tank before disposal. Caution shall be exercised when
separately pouring acid or alkaline waste. Acid and alkaline waste shall
never be poured together into the sinks.
Base cabinet sinks shall be the shallow photolab type and
shall be acid-resistant and alkali-resistant in the lead acid and NICAD shops,
Facilities, such as hose bidd, garden hose and rack, shall be
provided for flushing and neutralizing spilled electrolytes for each shop.