Corrosion control at Rochester Telephone has gone through the D. C. street car past to the polyethylene sheathed cable present. Today building cables no longer have insulating joints and cable sheaths are tied to copper via multi-ground neutrals and water pipes. This switch to total bonding and grounding was not without its corrosive penalties.

  1. In August of 1975, we tested a two mile section of main underground feeder cables. This is an area of suspected galvanic action due to the low area involved having been used as a dumping site some fifteen years back. That in addition to our having just lost a heavily pitted lead sheathed cable suggested that a survey was warranted. Each of the manholes in the lowest portion of this area were found to be full of water and pumps were kept running due to underground springs. There were no rectifier protected lines in the area.

Subject
Electric current, Water, Materials, Aluminum, Pipelines, Wiring, Joints, Lead, Cables, Rectifiers, Corrosion protection, Copper, Electrode potential
© 1976 Association for Materials Protection and Performance (AMPP). All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means (electronic, mechanical, photocopying, recording, or otherwise) without the prior written permission of AMPP. Positions and opinions advanced in this work are those of the author(s) and not necessarily those of AMPP. Responsibility for the content of the work lies solely with the author(s).
1976
Association for Materials Protection and Performance (AMPP)
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