Research addresses high-voltage interference, AC corrosion risk for cathodically protected pipelines

Research addresses high-voltage interference, AC corrosion risk for cathodically protected pipelinesBased on a presentation to the 6th International Conference on Pipeline Rehabilitation & Maintenance, Berlin, Oct. 6-10, 2003.Buried pipe- lines that parallel high-voltage lines are inductively interfered with by the lines' operating and fault currents. As a result, the AC-potential pipe-to-ground increases, with consequences for the safety of the pipeline against hazardous shocks and AC corrosion where the coating has been damaged. With reference to practical examples, this article describes calculations and measurement techniques for evaluating inductive high-voltage interference of p...

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