Abstract
The premature failure of water pipelines has resulted in an increased awareness that preventing external corrosion on water mains is critical. Cathodic protection, which has been in wide use for decades in the oil and gas industry, has been recognized as a cost effective method to prevent external corrosion and premature failures. This paper explains how cathodic protection works, the different types of cathodic protection, and several case histories are discussed that show how cathodic protection has been applied to ductile iron water pipelines. The case histories include a wide range of piping sizes to show the effectiveness of cathodic protection for virtually all sizes of pipe.
© 2013 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).
2013
Association for Materials Protection and Performance (AMPP)
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