2.6.24.4
Wiring
CEMS equipment shall be provided with plug in prefabricated cable for
interconnection between components. Power supply to the equipment shall be
2 wire, 120 volt nominal or less, 60 Hz, with one side grounded.
Electrical devices shall be connected as specified in Section 16402
INTERIOR DISTRIBUTION SYSTEM.
2.7
BOILER FEEDWATER SYSTEM
2.7.1
Deaerators
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NOTE: Deaerator manufacturers should be consulted
regarding specific features of construction for a
particular application. Specifications are included
for atomizing spray-type, tray-type, and atomizing
spray, two tank type deaerators. Careful
consideration will be given to the type of deaerator
selected. Tray type is preferred however it
requires more space than the other types. To
satisfy shipping requirements or where access is
limited, the deaerator may be knocked down and field
assembled. Select applicable pump type and control.
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2.7.1.1
Components
Deaerator shall be complete package by one manufacturer including receiver
with deaerating section, pumps, electrical control and accessories.
Deaerator components shall include but not be limited to the following:
a.
Storage tank.
b.
Deaerator [spraymaster] [or] [column.] ASME PTC 12.3.
c.
Water inlet atomizing valve.
d.
Steam inlet atomizing valve.
e.
Deaerator manual and automatic vents.
f.
Gauge glass.
g.
Steam pressure gauge.
h.
Feedwater thermometer.
i.
Tappings.
j.
Water level controller with makeup valve.
k.
Three valve by-pass and strainers for control devices.
l.
Steam relief valve.
m.
High water level alarm.
n.
Low water level alarm.
SECTION 15561A
Page 73
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