Electrical isolation and sectionalization of new ductile iron distribution water mains and the proper installation of magnesium anodes eliminate drainage bonds and greatly reduce stray current level in the earth. No significant stray current corrosion is to be expected on copper service pipes when electrically isolated from new ductile iron water mains.

Subject
Water, Piping, Cathodic protection, Magnesium anodes, Pipelines, Free corrosion potential, Joints, Cast iron, Stray current, Ductile iron, Copper, Soil, Electrode potential
Keywords:
Ductile iron distribution water mains, copper service piping, stray electric current
© 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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