Technical Paper

Impressed Current Retrofits on Offshore Platforms: The Good, The Bad, and The Ugly

by Jim Britton (2001)

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It has long been recognized that an impressed current cathodic protection systems can offer significant economic advantages over galvanic anodes on certain types of offshore platforms which require a cathodic protection retrofit. In many cases however, these advantages have been cancelled out by poor system performance and the economic repercussions that result. This paper will review some historical design philosophies and discuss good and not-so-good points regarding the efficiency and reliability of these systems. Newer designs will be compared, and the some economic comparisons will be presented for specific projects.

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