Abstract
Electric powered mass transit systems create stray currents which can cause severe corrosion damage that often result in leaks in ductile and cast iron water piping. The proper use of electrical isolation in pipelines can greatly reduce the total amount of stray current damage that will occur. For complete stray current protection, a system of magnesium anode groundbeds should be installed and connected to the pipeline through diodes to control the direction of stray current flow.
© 1994 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).
1994
Association for Materials Protection and Performance (AMPP)
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