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Design factors for cathodic protection

Journal Article · · Pipe Line Ind.; (United States)
OSTI ID:6830348
Pipeline Engineering GmbH, West Germany, outlines the engineering requirements for applying cathodic protection to new or existing pipelines: 1) the conductivity of the protected segment must be uninterrupted; 2) underground installations must not contact low-impedance grounding; and 3) pipe must incorporate a coating with a material of sufficient electrical resistance. For pipeline segments running parallel with high-voltage power lines, corrosion-protection and operating-station equipment must be able to accommodate voltage surges. Although cathodic protection supplied by impressed current or galvanic anodes is equally efficient in either case, suitability for a particular application depends onthe protective-current requirement, degree of interference with existing rights-of-way, and economics of installation and operation. Both systems require regular inspection and repair to maintain an acceptable level of performance.
OSTI ID:
6830348
Journal Information:
Pipe Line Ind.; (United States), Journal Name: Pipe Line Ind.; (United States) Vol. 48; ISSN PLINA
Country of Publication:
United States
Language:
English

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