A review of how Codes and Standards view Pipeline Coatings relative to Cathodic Shielding
“Shielding†or more correctly “Cathodic Shielding of Pipeline Coatings†is probably the most misunderstood yet talked about phenomenon in the pipe coatings marketplace. Aside from the marketing rhetoric, it is not clearly defined in real terms, although certain industry codes and standards define characteristics of pipeline coatings that are desirable attributes.
An important point to note is that the attributes that are identified as desirable for a pipeline coating may result in a coating that could be interpreted as one that "shields". Generally all pipeline coatings need to be electrically resistive; however, resistivity levels vary depending on the coating technology employed and the conditions of service. Electrically resistive coatings, or otherwise referred to as high dielectric strength coatings, have a unique place in the industry but should not be misrepresented as being a negative because of their ability to resist the flow of cathodic current.
This webinar will summarize what various national and international codes and standards say about coating attributes and review test methods which are used to measure resistivity. This will relate specifically to electrically resistive coatings and look at the said attributes of the coatings with respect to how the codes and standards comment on shielding, if at all. The webinar will also present independent testing along with manufacturer and user sponsored research into coatings and their electrical interaction.
If you are curious about what shielding is and how that impacts the performance of pipeline coatings, plan to attend this webinar.
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Presented by
Bob Buchanan,
Global Marketing Manager
Bob Buchanan is the Global Marketing Manager for Canusa-CPS. He has over 30 years experience in technical service, product management and marketing of construction products, including the last 15 years with Canusa-CPS. Mr. Buchanan is active in AWWA and NACE chairing, several committees and task groups that are either updating existing standards or developing new standards toward improving pipeline construction methods. He has also presented several papers and written a number of articles about pipeline coatings.
