2.10.2
Tube Brush
Tube brush (for fire-tube boiler installations), with steel bristles and
jointed handle of sufficient length to clean full length of fire-tubes,
shall be provided.
2.10.3
Smoke Pipe Cleaner
Cleaner shall be provided to clean the breaching and smoke connections.
Cleaner shall have jointed handle of sufficient length to clean breeching
and smoke connections without dismantling.
2.10.4
Wrenches and Gaskets
Wrenches shall be provided as required for opening boiler manholes,
handholes, and cleanouts. One set of extra gaskets shall be provided for
all boiler manholes and handholes, for pump barrels, and other similar
items of equipment. All gaskets shall be packaged and properly identified.
2.11
PAINTING AND FINISHING
2.11.1
Preventing Corrosion
Unless otherwise specified, surfaces of ferrous metal subject to corrosion
shall be factory painted in accordance with the manufacturer's standard
practice. All exposed pipe covering shall be painted as specified in
Section 09900 PAINTS AND COATINGS. Aluminum sheath over insulation shall
not be painted. All metallic materials shall be protected against
corrosion. Where connected to dissimilar metal, aluminum shall be
protected by approved fittings and treatment. All parts such as boxes,
bodies, fittings, guards, etc., made of ferrous metals, but not of
corrosion-resistant steel, shall be zinc coated in accordance with ASTM A
123/A 123M or ASTM A 153/A 153M, except where other equivalent protective
treatment is specifically approved in writing by the Contracting Officer.
Where a rust-inhibiting coating or hot-dip galvanizing is specified, any
protective treatment system that will pass the salt-spray fog test is
acceptable.
2.11.2
Treatment
All surfaces of castings, forgings, molded parts, stampings, welded parts,
exterior surfaces of the boiler, before application of the insulation, and
all interior surfaces of the sheet jacket, before assembly, shall be
cleaned to bare metal to remove oil, rust, sand, dirt, fins, spurs, scale,
slag, flux, etc., before primer is applied at the factory. External
surfaces shall be smooth and all edges shall be rounded or beveled, unless
sharpness is required to perform a necessary function.
2.11.3
Boiler Coating
Boiler shall be finished with one coat of silicone aluminum heat-resisting
(up to 648 degrees C 1200 degrees F) paint. Paint shall be applied
directly to clean bare metal surfaces and shall attain a minimum dry film
thickness of 1 mil. After assembly, all exposed surfaces of the equipment
normally painted in good commercial practice shall be cleaned to bare metal
and finished with two coats of silicone aluminum heat-resisting paint, with
each coat being a minimum dry film thickness of 0.025 1 mil. Component
parts procured factory finished need not be repainted. Mechanical cleaning
need not be performed on the sheet steel jacket if the surfaces are free of
SECTION 15846A
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