Criteria are given for the adequate cathodic protection of coated, buried or submerged steel pipe lines and similar structures. It was recommended that a protective electric current be applied to the structure in an amount sufficient to maintain its external surface, at every point, negative by at least 0.85 volt to a copper-saturated copper sulfate half cell in the structure's immediate proximity. Three reservations regarding the use of these criteria are incorporated into the recommendations. 5.2.4

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Copyright 1958 by the National Association of Corrosion Engineers.
1958
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