The concept of stray direct current interference has been enlarged upon to encompass corrosion problems found to exist on the ground electrodes connected to the neutral conductor of electrical power distribution systems. The complexities of overlapping systems operated by electrical utilities, communication utilities, hydrocarbon distribution utilities, and others, precludes a simple, universal solution to eliminate such interference and its resulting corrosion. A number of mitigative techniques are suggested, and experience indicates that a combination of several of them may be required to deal with any particular interference situation.

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