Stray electrical currents flowing into pipelines and other buried structures through ground return paths can cause corrosion, and return currents from traction motors in electric trains can flow into ground and corrode adjacent pipelines while occasionally interfering with buried telecommunication lines.
causalpending
Speaker
GradyEvidence Quote
“stray electrical currents in the ground can flow into pipelines and other buried structures, causing them to corrode. So, even though a big steel rail is a lot more conductive than the earth, return current from traction motors can and does flow into ground, sometimes corroding adjacent pipelines, and occasionally interfering with buried telecommunication lines too.”
Created: 8/12/2026, 6:16:07 PM
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