a.
Connections for condensate pumped return, vent, water outlet,
drain, sampling outlet, level transmitter and controls.
b.
[_____] mm inch vent.
c.
Reflex type water gage glasses with shutoff valves and guards.
d.
One, 125 mm 5 inch dial, thermometer, 10 to 149 degrees C 50 to
300 degree F range, with lagging extension type wells, for steam
and water space.
e.
[_____] mm inch overflow trap.
f.
One high water alarm switch with stainless steel float and trim.
Circuit shall close as liquid level rises. Locate switch to close
circuit when water level rises to 25 mm one inch below overflow
level of receiver.
g.
One low water alarm switch with stainless steel float and trim.
Close circuit as liquid level falls. Locate switch to close
circuit when water level drops to 25 percent of the storage
capacity of the storage tank.
h.
Install switches on a single column with valved connections to
tank. Provide unions in pipe on each side of each float switch.
i.
Furnish pipe, fittings, controls, specialties, bolts, gaskets,
drains, valves, necessary for a complete unit. Install at the
jobsite.
j.
Provide automatic control system to control level in condensate
tank by modulating discharge from condensate pumps.
2.9.2
Deaerating Heater
2.9.2.1
General
Provide a deaerating feedwater heater with storage tank conforming to FS
W-H-2904 and to ASME BPVC SEC VIII D1, except as modified below. Tank
shall be ASME Code stamped. Provide stainless steel trays. No test model
will be required.
Model A - Pressurized operation.
Type I
- Tray-type heating and deaerating element.
Class 3 - 10 minute water storage capacity (minimum).
Grade A - Guaranteed removal from water of dissolved oxygen in excess
of 0.005 cubic centimeters(cc) per liter 0.0012 in3/gal , over a
ten to one load swing.
2.9.2.2
Heater Capacity
Provide deaerating heater capable of heating and deaerating makeup water
consisting of [_____] kg per second pounds per hour of softened makeup
water from [_____] degrees C F to [_____] degrees C F (outlet temperature).
SECTION 15511N
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