Abstract
The production of stray currents by DC-transit systems leads to the corrosion of nearby buried metallic structures, such as pipelines and cable sheaths. The paper details the corrosion performance of a DC transit system with a floating return rail, for a number of different soil-resistivity structures: uniform, horizontal and vertical-layer models. This builds on previous work carried out in homogenous soils. It is shown that a variation in soil type along the route of a transit system can lead to high local leakage-current densities on buried metallic structures, increasing their vulnerability to corrosion damage. © The Institution of Engineering and Technology 2007.
Original language | English |
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Pages (from-to) | 9-16 |
Number of pages | 7 |
Journal | IET Electric Power Applications |
Volume | 1 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2007 |