This paper presents the results of a study conducted to determine the extent of galvanic corrosion that would be caused by cooper-nickel sheathing of offshore steel platforms. The study investigated the effects of selected steel-to-CuNi area ratios on the magnitude and distribution of the galvanic current. One year seawater exposure tests utilizing segmented CuNi-steel pilings were carried out near Ocean City, New Jersey. The results of the study suggest that, for piling configurations and lengths of copper-nickel sheathing similar to those included in the study, the maximum galvanic corrosion rate of the steel will be between 0.2 and 0.3 mm/v, immediately next to the sheathing. The galvanic attack will be confined primarily to the first few meters of piling near to the sheathing. Beyond this, the intensity of galvanic attack will decline markedly.

Subject
Water, Corrosion rate, Pilings, Tides, Current measurements, Seawater, Corrosion attacks, Steel, Ports and harbors, Galvanic current, Galvanic corrosion, Fouling, Concentration cells
© 1987 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).
1987
Association for Materials Protection and Performance (AMPP)
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