2.16.2
Coatings For Underground Piping
Protective Coatings for Buried Carbon Steel, Stainless Steel, and Aluminum
Piping [and for Piping Under Piers]: Provide pipe with protective coating
system of factory-applied adhesive undercoat and continually extruded
polyethylene coating conforming to NACE RP0185, Type A. The protective
coating shal have a minimum thickness of 762 micrometers (30 mils) 30 mils
for pipe sizes smaller than 152.4 mm (6 inch) 6 inches.; minimum thickness
shall be 0.90 mm 36 mils for pipe sizes 150 mm 6 inches and larger.
2.16.3
Damaged Areas of Pipe Coating
Provide polyethylene tape which conforms to NACE RP0169 and NACE RP0190 762
micrometers (30mils) 30 mils nominal thickness.over damaged areas.
2.16.4
Fittings, Couplings, and Regular Surfaces
Provide polyethylene tape which conforms to NACE RP0169 and NACE RP0190 762
micrometers (30mils) 30 mils nominal thickness.overlapped a minimum 25 mm
one inch over damaged areas.
2.17
NFPA 70 for materials and workmanship. The fuel piping system shall be
bonded in metallic contact to provide electrical continuity to fixed and
moving components for grounding the entire system. Provide jumpers to
overcome the insulating effects of gaskets, paints, or nonmetallic
components. Minimum size ground conductor shall be No. 6, with single
covered, flexible, stranded, copper conductor, Type RR-USE. Provide
dielectric connection in riser pipe for undergound piping protected by
impressed current.
2.18
BURIED UTILITY WARNING AND IDENTIFICATION TAPE
Provide detectable aluminum foil plastic-backed tape or detectable magnetic
plastic tape for warning and identification of buried piping. Tape shall
be detectable by an electronic detection instrument. Provide tape in
minimum 80 mm 3 inch width rolls, color coded for the utility involved,
with warning and identification imprinted in bold black letters
continuously and repeatedly over entire tape length. Use permanent code
and letter coloring unaffected by moisture and other substances contained
in trench backfill material.
2.19
MANHOLE DRAINERS (SUMP PUMPS)
Provide factory assembled and tested submersible type pumps for operation
under water. Provide pump complete with cast-iron casing, bronze impeller,
stainless steel shaft, sealed heavy-duty ball bearings, water-cooled
hermetically sealed electric motor, built-in automatic reset thermal
protection, float switches, high water alarm, and waterproof
three-conductor cables with grounding plugs.
PART 3
EXECUTION
3.1
PREPARATION
3.1.1
Demolition
Remove materials so as not to damage materials which are to remain. Replace
SECTION 15194N
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