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Title: Mini-Solar Cathodic Protection
Author: James E. Hutson,
Source: American Gas Association 1985
Year Published: 1985
Abstract: The need lor applying a small amount of local current in high resistivity soils to an otherwise well-designed cathodieally protected pipeline has been a challenge for a long time. Ideal conditions would call lor a well-placed galvanictype anode and, in some cases, a small rectifier system. What choices are there if these conditions are not ideal? Suppose your soil resistivity is 200,000 ohms/CM and the area in question is 15 miles from the nearest power line? Even after recoating, the pipe-to-soil potential still does not reach criteria. What alternatives do we have for solving this problem, and how much concern should it be given? Lets face it, this is not the most critical corrosive environment one will face on the pipeline system, but due to either the large metallic area of block valves or the congestion of the piping in meter stations, it is not an area to be left unprotected.

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