b.
Provide structural steel columns and beams to support the boiler
[_____, _____] [and] [stoker] [and the boiler operating floor
adjacent to the boiler,] [walkways, and platforms] [as indicated].
Size steel to support the equipment dead loads imposed, plus a
minimum live load of 976 kg 200 pounds per square meter foot.
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NOTE: Designer should include here any provisions
where boiler steel is to serve as support for
portions of building, or equipment.
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[c.
Boiler manufacturer shall furnish a drawing showing the magnitude
and location of the loads imposed by the equipment and structural
steel on the building structural steel.]
d.
Provide anchor bolt setting plans along with anchor bolts with
nuts and sleeves that shall be set in concrete for attachment in
support of boiler and allied equipment. Provide bolts and nuts as
required for items furnished.
2.2.5
Boiler Hoppers
2.2.5.1
Rear Pass Hoppers
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NOTE: Delete bracketed portions with cinder return
(fly ash reinjection) when a cinder return system
will not be incorporated into the project.
**************************************************************************
Provide rear pass hoppers at the rear of the stoker or boiler setting.
Construct hoppers of 6 mm 1/4 inch thick welded steel plate as approved.
Hoppers shall have minimum storage capacity based on 8 hours of operation
at full load with no cinder return (fly ash reinjection) and shall have 200
mm 8 inch diameter outlets with standard flanges on the bottom of the
hoppers. [Coordinate hoppers and hopper outlet flanges with overfire
air-cinder return reinjection system furnished by the stoker manufacturer.]
Provide insulation and lagging for the hoppers as specified for the boiler.
2.2.5.2
Plenum Chamber
Enclose the underside of the grates so as to form a plenum chamber and not
permit any leakage of siftings onto the floor. Provide this chamber with a
single hopper complete with access door and supporting steel. Provide
manually operated double leaf stoker blast gates at duct connection to
plenum chamber. Provide an 200 mm 8 inch diameter outlet with standard
flange on bottom of the hopper.
2.2.5.3
Ash Storage Hopper
Hopper is specified under paragraph entitled "Ash Handling Equipment" in
this section.
2.2.6
Boiler Trim
Fittings, drain valves, drain piping, feed piping, pressure gages, feed
valves, stop valves, check valves, safety valves, and other appurtenances
SECTION 15502N
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