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Coating repair guidelines for carbon steel and galvanized electric transmission structures coated with polyurethanes, urethane, coal tar, epoxy, coal tar epoxy, and cold-applied tape.
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STABILIZATION NOTICE: This document has been declared “Stabilized” by AMPP Standards Committee (SC) 03 and will no longer be subjected to periodic reviews for currency.
This AMPP standard practice provides the most current technology and industry practices for the use of field-applied coal tar enamel external pipe coating systems. This standard is intended for use by corrosion-control personnel, design engineers, project managers, purchasing personnel, and construction engineers and managers. It is applicable to underground steel pipelines in the oil and gas gathering, distribution, and transmission industries.
This coating material standard is intended primarily for use by coating manufacturers, specifiers, and applicators. It contains requirements for the formulation of the coating material as well as requirements for material properties of the formulated coating and instructions for proper application of the coating. The coating is intended for use in environments that are not exposed to ultraviolet light. Its use may be restricted in some areas due to its coal tar content.