Electrochemical Corrosion

Alternating currents influence on metal structures can be hazardous. There can be significant safety concerns. Please refer to this link. Also refer to numerous other NACE articles. Engage a corrosion engineer who is a member of NACE.

http://www.nace.org/nace/content/library/community/safety/SafetyNearPowerlines.pdf

This is not the 100% answer, only a partial one. Most metals oxidize from moisture, chemical salts, etc. and those oxides together with the metal itself can form a diode which then rectifies the ac into dc. Many of us have listened to am radio on lead power cables by this phenom.

"This is not the 100% answer, only a partial one. Most metals oxidize from moisture, chemical salts, etc. and those oxides together with the metal itself can form a diode which then rectifies the ac into dc. Many of us have listened to am radio on lead power cables by this phenom."

Thank you very much.

This is a wonderful reply. Please more explain about media semiconductors.

BEST REGARDS

MSJ

The pipeline will couple to the EMF above. You may need to decouple the pipeline from the field to prevent pipeline corrosion. You may need to bond this pipeline to others nearby if the have an active cathodic protection.

http://web.nace.org/content/Publications/MP/2001/0108024.pdf