(2) Polyvinyl chloride pressure-sensitive adhesive tape.
(3) High density polyethylene/bituminous rubber compound tape.
(4) Butyl rubber tape.
(5) Coal tar epoxy.
2.4.11.2
Field Joints
Field joints shall be coated with material compatible with the pipeline
coating compound. The joint coating material shall be applied to an equal
thickness as the pipeline coating. Unbonded coatings shall not be used on
buried metallic piping. This prohibition includes unbonded polymer wraps
or tubes.
2.4.11.3
Inspection of Pipe Coatings
Once the pipeline or vessel is set in the trench, an inspection of the
coating shall be conducted. This inspection shall include electrical
holiday detection as described in paragraph TESTS AND MEASUREMENTS.
2.4.11.4
Above Ground Piping System
Above ground piping shall be given two coats of exterior oil paint.
Surface preparation shall be as recommended by paint manufacturer, except
as follows: ferrous, shop primed surfaces shall be touched up with ferrous
metal primer; surfaces that have not been shop primed shall be solvent
cleaned; surfaces that contain loose rust, mil scale, or other foreign
substances shall be mechanically cleaned by power wire brushing and primed
with ferrous metal primer; and primed surfaces shall be finished with two
coats of exterior oil paint or vinyl paint.
2.4.12
Preformed Sheaths
Preformed sheaths for encapsulating electrical wire splices to be buried
underground shall fit the insulated wires entering the spliced joint.
2.4.13
Epoxy Potting Compound
Epoxy potting compound for encapsulating electrical wire splices to be
buried underground shall be a two package system made for the purpose.
2.4.14
Backfill Shields
Backfill shields shall consist of approved pipeline wrapping or fiberglass
reinforced, coal-tar impregnated tape, or plastic weld caps, specifically
made for the purpose.
2.4.15
Electrical Tape
Pressure-sensitive vinyl plastic electrical tape shall conform to UL 510.
2.4.16
Cable Marker Tape
Traceable marker tape shall be manufactured for the purpose and clearly
labeled "Cathodic Protection Cable Buried Below".
SECTION 13112A
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