2.1.3
Bricks, Refractory, Insulating
ASTM C 155.
2.1.4
Coal-Tar Primer and Enamel
AWWA C203.
2.1.5
Draft Gauge
and last boiler pass shall be mounted in the panel front. Operating range
for the draft gauges shall be field-verified with normal reading in the
middle of the scale range. Draft gauges shall include piping between the
gauges and the boiler.
2.1.6
One piece construction of plate steel, semisteel, or cast iron equipped
with suitable baffle arrangement and drain connection for the removal of
entrained condensate and oil. Flow area through unit shall be larger than
connecting pipe.
2.1.7
Expansion Joint
EJMA Stds Book of Standards and ASME B31.1. Expansion joint shall be
packless, leak proof, externally pressurized bellows type. The expansion
joint shall include integral guide rings, full thickness cover designed to
contain full system pressure, and self-draining convolutions. The
expansion joint shall be insensitive to flow direction. The expansion
joint shall be provided with a drain connection for condensate removal.
The expansion joint shall be welded construction with ASTM A 240/A 240M
T-304 stainless steel bellows, ASTM A 106/A 106M GR B cover and ASTM A
106/A 106M GR B standard wall pipe with flanged ends. For pumped
condensate, Schedule 80 pipe shall be used. Expansion joint shall be rated
for 1.03 MPa 150 psig and 425 degrees C 800 degrees F and have maximum
axial movement rating of 100 or 200 mm 4 or 8 inches with a rated cycle
life of 1,000 for the full rated movement.
2.1.8
Gauge, Pressure and Vacuum
ASME B40.100, Type I, Class 1 or 2, as applicable, style as required,
suitable for pressure or vacuum specified, with 150 mm 6 inch minimum
diameter dial except as otherwise specified.
2.1.9
Low Water Cutoff
Low water cutoff shall be float actuated switch or electrically actuated
probe type. Float chamber shall be provided with a blowdown connection.
Low water cutoff shall cause a safety shutdown and sound an alarm when the
boiler water level drops below a safe minimum. A safety shutdown due to
low water shall require manual reset before operation can be resumed and
shall prevent recycling of the burner. Low water cutoff shall be in strict
accordance with the ASME CSD-1.
2.1.10
Mortar, Refractory
As recommended by the boiler manufacturer.
SECTION 15561A
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