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Aboveground evaluation of the coating condition of underground metallic pipelines. Includes surveys of alternating current (AC) attenuation, direct current (DC), AC-voltage gradient, and the Pearson survey.
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New in 2009! Presents various techniques for aboveground evaluation of the coating condition of underground metallic pipelines, including the alternating current (AC) attenuation survey, direct current (DC) survey, AC-voltage gradient survey, and the Pearson survey. This standard is specifically intended to address buried onshore metallic pipelines and is based on available technology and methods that have successfully demonstrated evaluation of the coating condition of buried pipelines. Key words: aboveground, pipeline, AC, DC, Pearson, survey, onshore
Presents procedures for performing close-interval DC pipe-to-electrolyte potential surveys on buried or submerged metallic pipelines.
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Requirements to ensure adequate isolation of cathodically protected pipelines, especially those with high-quality dielectric coatings.
HISTORICAL DOCUMENT. Standard for achieving effective control of external corrosion on buried or submerged metallic piping systems or other buried metallic structures. System design. Coatings. Cathodic protection criteria & installation. Control of interference currents.