the heads (overall). Provide tank with wear plate not less than 10 mm 3/8
inch thick and [280 by 380 mm11 by 15 inch] [460 by 510 mm18 by 20 inch]
manhole.
2.9.10.2
Tank Connections
Provide the following connections:
a.
Blowdown inlet for bottom blowdown [20] [25] mm [3/4] [1] inch;
b.
Tangential blowdown inlet [_____] mm inch;
c.
Steam vent, flanged [_____] mm inch;
d.
Discharge water outlet, flanged [______] mm inch with internal
water seal and 20 mm 3/4 inch siphon breaker;
e.
50 mm Two inch drain;
f.
Thermometer connection 20 mm 3/4 inch;
g.
Pressure gage connection 6 mm 1/4 inch;
h.
Cold water inlet [______] mm inch with temperature regulating
valve and backflow preventer; and
i.
Two gage glass connections 5 mm 1/2 inch.
2.9.10.3
Angle Supports and Coating
Provide tank with steel angle support legs extending [_____] meters feet
below bottom of the tank. Coat tank with one coat of manufacturer's
standard high temperature primer.
2.9.10.4
Accessories
a.
Gage Glass:
300 mm 12 inch reflex type with shutoff valves and
guard;
b.
Thermometer: Bi-metal dial type with separable socket, 125 mm 5
inch dial, 10 to 149 degrees C 50 to 300 degrees Frange;
c.
Zero to
172 kpa (gage) 25 psig range; and
d.
Internal Baffles and Pipes:
As detailed.
2.9.10.5
Controls
Provide a self operating regulator to control the flow of cooling water to
the tank. Regulator shall include a 20 mm 3/4 inch screwed bronze body
with stainless steel trim, reverse acting actuator (for cooling), capillary
tubing and a union connection bulb with a stainless steel well. Control
setting shall be 60 degrees C 140 degrees F with a minimum Cv of [_____].
2.9.11
Continuous Blowdown System
Provide a complete automatic continuous boiler blowdown system which shall
include a controller/programmer unit and flow assembly for each boiler,
plus a continuous blowoff heat exchanger, flash tank and boiler water
SECTION 15511N
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