It has long been recognized that impressed current can offer significant economic advantages over galvanic anodes on certain types of offshore platforms that require a cathodic protection retrofit. In many cases however, these advantages have been cancelled out by poor performance of impressed current systems. This paper will review some historical design philosophies and discuss good and not so good points regarding the efficiency and reliability of the systems. Newer designs will be compared, and some project economics will be presented.

Subject
Costs, Water, Materials, Impressed current cathodic protection, Structures, Wiring, Installation, Lead, Cables, Current densities, Mechanical failure, Impressed current, Anodes
Keywords:
Offshore CP, CP Retrofit, Impressed Current, Platform CP
© 2001 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).
2001
Association for Materials Protection and Performance (AMPP)
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