repaired before installation. After field coating and wrapping has been
applied, the entire pipe shall be inspected by an electric holiday detector
with impressed current set at a value in accordance with NACE RP0274 using
a full-ring, spring-type coil electrode. The holiday detector shall be
equipped with a bell, buzzer, or other type of audible signal which sounds
when a holiday is detected. All holidays in the protective covering shall
be repaired immediately upon detection. The Contracting Officer reserves
the right to inspect and determine the suitability of the detector. Labor,
materials, and equipment necessary for conducting the inspection shall be
furnished by the Contractor.
3.5.2
Protective Covering for Aboveground Piping Systems
Finish painting shall conform to the applicable paragraphs of Section 09900
PAINTING, GENERAL and as follows:
3.5.2.1
Ferrous Surfaces
Shop primed surfaces shall be touched up with ferrous metal primer same
type paint as the shop primer. Surfaces that have not been shop primed
shall be solvent-cleaned in accordance with SSPC SP 1. Surfaces that
contain loose rust, loose mill scale, and other foreign substances shall be
mechanically cleaned by power wire brushing in accordance with SSPC SP 3 or
brush-off blast cleaned in accordance with SSPC SP 7 and primed with
ferrous metal primer in accordance with SSPC Paint 25. Primed surfaces
shall be finished with two coats of exterior alkyd paint conforming to MPI 9.
3.5.2.2
Nonferrous Surfaces
**************************************************************************
NOTE: Retain only the first sentence for normal
conditions; delete the first sentence for corrosive
conditions.
**************************************************************************
[Nonferrous surfaces shall not be painted.] [Nonferrous surfaces shall be
painted due to corrosive conditions. The surfaces shall be solvent-cleaned
in accordance with SSPC SP 1. A first coat of FS TT-E-2784, Type III,
Flat, and 2 coats of FS TT-E-2784, Enamel [Type I, Gloss] [or] [Type II,
Semigloss] shall be applied.]
3.5.3
Protective Covering for Piping in Valve Boxes and Manholes
Piping in valve boxes or manholes shall receive protective coating as
specified for underground steel pipe.
3.6
INSTALLATION
**************************************************************************
NOTE: When existing gas piping is abandoned, show
disconnect details on the drawings. Refer to ASME
B31.8 for guidance on preparing the disconnect
details. ASME B31.8 requires physical disconnection
from gas sources. Shutoff valves are not an
acceptable means of disconnect.
**************************************************************************
Gas distribution system and equipment shall be installed in conformance
with the manufacturer's recommendations and applicable sections of ASME
SECTION 02556A
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