coating where no primer is specified, onto corners and into crevices and
welds, working the material into irregular surfaces for a holiday free
finish.
3.1.14.2
Baked, Unmodified Phenolic System
a.
General: The following shall govern for a protective coating
system based on unmodified phenol-formaldehyde resin intended for
shop application to [black carbon steel] [_____] surfaces in
[fume] [vapor] exhaust service with possibility of materials
concentration by condensation and subsequent evaporation. Shop
apply coating by an applicator approved or licensed by the coating
manufacturer.
b.
Surface Preparation: Clean and blast surfaces with dry abrasive
to "White Metal" and critical profile and anchor pattern in
accordance with SSPC SP 5, and requirements and recommendations of
the coating manufacturer.
c.
Application: The complete system shall include the application of
two coats of red pigmented base followed by not less than one coat
of the clear finish, to provide a total minimum dry film thickness
of [0.15 mm] [6 mils] [_____]. Apply coating materials by
conventional industrial pressure spray equipment. Use only those
thinners and cleaners in amounts recommended by the manufacturer.
Heat-cure each coat between coats and bake surfaces after the last
coat in accordance with manufacturer's applicable published
instructions and specific instructions for the specified
application. Baking time between coats shall be a minimum 1 1/2
to 2 hours at 93 to 121 degrees C 200 to 250 degrees F. Baking
after top coat shall be one hour at 93 to 177 degrees C 200 to 350
degrees F, plus 2 hours final bake at a temperature of [177] [204]
degrees C [350] [400] degrees F. Other baking schedules to
achieve required quality coating may be proposed.
d.
Repair: Return damaged surfaces to the applicator's shop for
repair, unless otherwise approved by the Contracting Officer.
3.1.14.3
Inorganic Zinc Coating System
a.
General Requirements, Inorganic Zinc Coating System: The
following shall govern for a protective coating system primer
based on inorganic zinc coating intended for shop application to
[_____] [specified] black carbon steel surfaces with subsequent
field finishing with compatible tie coat and [epoxy] [acrylic
latex] [modified acrylic] [chlorinated rubber] top coat [applied
as part of work under Section 09900 PAINTS AND COATINGS.]
b.
Surface Preparation:
SSPC SP 5.
c.
Application: Apply one coat at [0.05 to 0.10] [0.10 to 0.13] mm
[2 to 3] [3 to 5] mils dry film thickness by airless or
conventional spray equipment. Use only those thinners and
cleaners in amounts recommended by the manufacturer.
d.
Repair: Field repair damaged surfaces in accordance with
manufacturer's instructions.
SECTION 15801N
Page 42
Previous Page
