05-06M
be at least three feet of clear floor space around all items of equipment.
Boilers and chillers require a greater amount of clearance. Drawings must
show plan and elevation views of all valves and equipment which require
access.
15.3 Boilers: Allow space for tube cleaning and tube removal, door swing, and
soot blower removal. Provide access platforms for valves and manways which
are located on top of boilers, for access to steam drum manways located at
rear of water tube boilers, for access to economizer valves and inspection
openings, and control devices and valves on air pollution control equipment.
Provide unobstructed view from aisle of all boiler-mounted and burner-mounted
gages and indicators.
15.4 Control and instrument panels shall be visible from the aisle, and to the
maximum extent possible, visible from the control room/Engineering Control
Center. Instrument panels may be located in the control room/Engineering
Control Center.
15.5 The electrical switchgear and engine-generator(s) shall be located in a
separate room adjacent to an outside wall. The engine-generator(s) shall be
visible via view windows from the room that contains their paralleling and
distribution equipment.
15.6 All valves shall be located not more than seven feet above a floor,
mezzanine, or platform. Limited exceptions are permitted for valves that are
rarely used, would not need to be operated in an emergency situation, and can
be reached with portable ladders or chain-wheels.
15.7 Water Treatment Area: Provide an area which includes the chemical feed
units and space for chemical storage and mixing. Cold water and drains must be
available in the area and there must be an emergency eyewash and shower.
Approximate floor space requirement for chemical storage is 10 square meters
(100 square feet). The chemical storage area must accommodate chemicals in
bags or barrels or bulk tanks that will be furnished by the chemical supplier.
The storage area must be reachable by hose from a tank truck parked outside
the building.
15.8 Water Test Area: Provide laboratory type sinks in a stainless steel
countertop unit which includes cabinets below and above for storage of boiler
water testing equipment. Locate boiler water sample coolers adjacent to the
sink unit. The test area should be adjacent to the firing aisle. The feed
water sample cooler should be located adjacent to the deaerator.
15.9 Provide salt storage space adjacent to water softener and dealkalizer (if
provided).
15.10 Oil Piping: Locate in trenches to reduce leak hazard and air binding.
16.
COMBINED BOILER AND CHILLER PLANT (ENERGY CENTER):
16.1 Combining the boiler and chiller plant in one building is preferred when
it can be economically justified. Each proposed energy center must be reviewed
by VA Central Office.
16.2 The energy center shall house the boiler plant, chiller plant,
Engineering Control Center, pumps, plumbing equipment, associated electrical
switchgear and boiler plant emergency generator and co-generation equipment
for the VA medical center. To the extent feasible other emergency generators
and electrical substations and domestic hot water generators may be placed in
the energy center.
shall be designed in accordance with the HVAC Design Manual. The electrical
equipment area shall be designed in accordance with Design and Construction
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