o.
High temperature condensate diffuser.
p.
Boiler feed pump and motor sets.
q.
Recirculation orifice.
r.
Pump suction shutoff valve.
s.
Suction strainer.
t.
Suction flexible fitting.
u.
Pump discharge shutoff valve.
v.
Pump discharge pressure gauge.
w.
Pump discharge manifold.
x.
Overflow drain connection.
y.
Control panel.
z.
Chemical feed quill.
aa.
Vacuum breaker.
bb.
Sentinel relief valve.
cc.
Tank drain valve.
2.7.1.2
Deaerator, General Requirements
Deaerator water storage tank shall be [_____] mm [_____] inches diameter
[_____] mm [_____] inches by [_____] long.
a.
Storage tank section shall have [_____] minutes of storage and
have a capacity of [_____] liters gallons measured to overflow.
An 280 by 380 mm 11 by 15 inch elliptical manhole shall be
provided for access. Deaerator shall be rated at [_____] kg pounds
of steam per hour.
b.
Deaerator shall be designed to remove dissolved oxygen in boiler
feedwater to 0.005 cc/liter or less and eliminate carbon dioxide
at any load between 5 and 100 percent of rated capacity.
c.
Tank shall be of welded steel construction built in accordance
with Section VIII of the ASME pressure vessel code for 345 kPa 50
psig at [_____] degrees C degrees F and stamped accordingly.
Internal surfaces which come in contact with undeaerated water
shall be constructed of Type 316 stainless steel.
d.
Deaerator shall be provided with manual and automatic vent valves.
Automatic vent valve shall be thermostatically controlled to
provide fast venting of sudden buildup of gases. Manual vent
valve shall have an orifice for continuous minimum venting.
Manual minimum venting rate shall not exceed 0.1 percent of rated
deaerator capacity. Deaerator shall be suitable to operate from
13.6 to 102 kPa 2 to 15 psig.
SECTION 15561A
Page 74
Previous Page
