Electrical isolation of selected metal structures from the corrosive influence of more noble metal structures has been long recognized as the most important and desirable method of reducing corrosion of the first structure. Various insulating devices are available to achieve this isolation. They range from simple non-metallic couplings to sophisticated factory assembled connectors. These devices have one thing in common. They are designed to be installed in the closure circuit between the structures. Some structures, by their method of construction or their operation, do not lend themselves to this type of isolation. Or, for safety reasons, they must remain grounded to other metal structures.

Subject
Steel structures, Underground structures, Materials, Cylinders, Cathodic protection, Corrosion currents, Isolation, Metallic structures, Electrochemical current, Plastics, Metals, Steel, Electrolytes
© 1979 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).
1979
Association for Materials Protection and Performance (AMPP)
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