2.14.7
Sump Pumps
FS A-A-50555 with automatic float switch and disconnect switch in NEMA 6
enclosure.
2.14.8
Water Softening System
**************************************************************************
NOTE: Size the system for 125 percent of the
maximum expected steam load to 100 percent of plant
capacity. Include losses from blowdown. Size with
one tower regenerating. Frequency of regeneration
should be between 12 and 24 hours at peak loading.
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Ion exchange resin type, conforming to WQA S-100 except as modified below.
[Manual] [Push button automatic] [Fully automatic] in operation with
operating controls housed in a NEMA 12 enclosure having a total capacity
between regenerations of not less than [_____] liters gallons of water of
[_____] grams grains hardness when operated at a sustained softening rate
of [_____] L/s gpm. Maximum effluent water temperature shall be [_____]
degrees C F.
2.14.8.1
Softener Equipment
Including but not limited to the following:
a.
Water hardness monitor: Provide a water hardness monitor with an
alarm point at 1.0 ppm to assure compliance for boilers rated above
3150 grams/sec 25,000 lbs./hr.
b.
Total solids monitor/controller: Provide a continuous monitor and
controller when required to control the concentration of dissolved
solids and treatment chemicals in the water for boilers rated above
3150 grams/sec 25,000 lbs./hr.
c.
Water meter: Provide a [_____] mm inch cold water meter on each
softener unit.
d.
Ion exchange resin: High capacity, polystyrene base, sulfonated
synthetic type except that the exchange capacity shall be not less
than 68.70 kg per cubic meter 30 kilograins per cubic foot at a
salt dosage of 240 kg per cubic meter 15 pounds per cubic foot.
e.
Tank sizing: Minimum acceptable bed depth of 762 mm 30 inches;
maximum acceptable bed depth of 1829 mm 72 inches. Base reactor
tank sizes on allowing a freeboard above the resin bed of not less
than 75 percent of the resin bed depth, and flow rate between 1.11
and 7.13 L/s per cubic meter 0.5 and 3.2 gpm per cubic foot of
resin.
2.14.8.2
Brine Storage System
Provide a complete brine storage system including fiberglass storage tank,
sight level gage, bulk salt delivery tube, internal distribution system,
level control system, tank vent with dust collection system, top and side
manholes, access ladder, and other required appurtenances.
a.
Storage tank:
Filament wound fiberglass with flat bottom and
SECTION 15502N
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