The collection of accurate stray current field data on existing utility piping has been a serious concern especially in areas of new transit systems. Extensive testing was performed on existing water piping in conjunction with the construction and operation of the new Baltimore Light Rail Transit System. Testing was performed with instruments connected both to piping appurtenances such as hydrants and valves as well as to specially installed test facilities. The test results that were obtained during these stray current investigations revealed critical information. This information included requirements for future testing as well as important information about utility systems in the vicinity of transit systems.

Subject
Rail, Test methods, Water, Piping, Voltage, Piping systems, Valves, Reference electrodes, Voltmeters, Charts, Stray current, Construction, Copper-copper sulfate
Keywords:
Stray current, transit systems, light rail lines, water mains, pipe bonding, electrical isolation, test facilities
© 1994 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).
1994
Association for Materials Protection and Performance (AMPP)
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