Thin film coatings, such as fusion bonded epoxy (FBE) coatings have become more popular as an underground pipeline coating especially on large diameter pipelines. This together with improved construction techniques has resulted in very effective coatings. They do however present additional considerations in a cathodic protection design. This paper deals with some issues that one must bear in mind related to cathodic protection when dealing with these superior coatings including a modification to empirical data in cathodic protection pre-designs, an upper polarized potential to prevent cathodic disbondment, inspection in horizontal directionally drilled crossings, an increased effect of telluric currents and an increased possibility of hazardous induced AC potentials. Examples are presented and discussed.
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2002 4th International Pipeline Conference
September 29–October 3, 2002
Calgary, Alberta, Canada
Conference Sponsors:
- Pipeline Division
ISBN:
0-7918-3620-7
PROCEEDINGS PAPER
Impact of Thin Film Coatings on Cathodic Protection Available to Purchase
Daryle Warnke,
Daryle Warnke
CC Technologies Canada, Ltd., Calgary, AB, Canada
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W. Brian Holtsbaum
W. Brian Holtsbaum
CC Technologies Canada, Ltd., Calgary, AB, Canada
Search for other works by this author on:
Daryle Warnke
CC Technologies Canada, Ltd., Calgary, AB, Canada
W. Brian Holtsbaum
CC Technologies Canada, Ltd., Calgary, AB, Canada
Paper No:
IPC2002-27325, pp. 1979-1989; 11 pages
Published Online:
February 24, 2009
Citation
Warnke, D, & Holtsbaum, WB. "Impact of Thin Film Coatings on Cathodic Protection." Proceedings of the 2002 4th International Pipeline Conference. 4th International Pipeline Conference, Parts A and B. Calgary, Alberta, Canada. September 29–October 3, 2002. pp. 1979-1989. ASME. https://doi.org/10.1115/IPC2002-27325
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