One 285-feet deep anode bed was installed by the New York Telephone Company, Western Area, in February, 1964. This installation was designed to provide cathodic protection for eight lead sheathed cables and bare metal appurtenances in the manhole/duct underground system. The cathodic protection system was to provide protection for approximately six miles of underground plant in an extremely corrosive area influenced predominantly by low resistivity of less than 1000 ohm centimeter3/chloride environment. Small amounts of calcium chloride (CaCL) in the 500 ppm range and larger amounts of sodium chlorides (NaCL) in the 5,000/6,000 ppm range were prevalent and apparent by the extremely low resistivities measured in the manhole/duct system. These extremely low resistivities are directly associated with the snow belt region where heavy vehicular traffic and subsequent use of deicing salts are localized.

Subject
Materials, Insulation, Tantalum, Cathodic protection, Conductors, Sodium chloride, Platinum, Lead, Rectifiers, Backfill, Deep wells, Electrodes, Anodes
© 1980 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).
1980
Association for Materials Protection and Performance (AMPP)
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