Literature dating back to the early 1960’s has shown that AC current can cause corrosion of cathodically protected steel under laboratory conditions. Until recently however, there has been little evidence to suggest that AC corrosion of cathodically protected structures may be of practical concern. In […]

This paper discusses some of the corrosion problems typically experienced by the underground portions of electrical transmission line towers, and examines cathodic protection as a method by which tower footing corrosion can be prevented. A case history of one power company’s cathodic protection experiences is […]

The data obtained from several municipal watermains corrosion studies in the Province of Ontario is presented. This data corroborates the findings of a previous study indicating that the galvanic couple formed by the connection of the copper service piping to watermain is a principal factor […]

This paper outlines the procedures used in designing a cathodic protection systems for new or existing water piping. Both sacrificial and impressed current systems are discussed, and design examples for various application of these systems are also given. DOWNLOAD PAPER