Interaction between coatings and CP deserves basic review
Journal Article
·
· Pipe Line and Gas Industry
OSTI ID:39937
- Advanced Pipeline Rehabilitation and Training Ltd., West Houghton (United Kingdom)
Most common methods used to monitor cathodic protection (CP) and, by inference, pipe line coating conditions and corrosion are crude and subject to inaccuracies. The fundamental role of a protective pipe line coating is to provide an electrical and electrochemical barrier isolating steel from corrosive soil, halting corrosion by breaking the continuity of the electrical circuit by insulating anode and cathode areas. It follows that a coating`s fundamental property must be moisture uptake resistance, guarding against further disbondment promoted by moisture penetration to the steel-coating interface. This paper reviews the basics of determining protective coatings ability to resist moisture. It then goes on to the various methods of cathodic protection (CP) application, and the various inorganic and organic coatings used in conjunction with the CP.
- OSTI ID:
- 39937
- Journal Information:
- Pipe Line and Gas Industry, Journal Name: Pipe Line and Gas Industry Journal Issue: 3 Vol. 78; ISSN PLGIFV
- Country of Publication:
- United States
- Language:
- English
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