Abstract
Laboratory tests were conducted to determine whether or not corrosion of lead cable sheath can, occur under cathodic protection conditions. Some of the runs were made in cells containing the aqueous solutions of chlorides or chlorides and alkali while other tests were made with the lead cable sheaths in contact with soil saturated with the various solutions. The results from all of these tests indicated that no corrosion of the cable sheath occurred in any of these environments so long as the cathode was receiving protective current. It was found, how-ever, that corrosion and pitting of lead cable sheath could occur when the protective current was interrupted. It was determined that the cathode products of previous cathodic protection constitute an environment for potentially serious corrosion at any time that the protective current ceases to flow to any part of the lead cable sheath. 5.2.1
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