The resolution of mitigation design problems associated with an AC a transmission line collocated with a natural gas pipeline is reviewed. Mitigation design was complicated by a high level of magnetic field coupling to the pipeline and high soil resistivity along the right-of-way. The results of the computer modeled simulation, which optimized the design for touch potential control, are presented. Problems encountered in the mitigation system installation are discussed. Validation of the mitigation design was made by comparing voltage measurements made on the completed pipeline with values predicted by the computer simulation.

Subject
Circuits, Piping, Voltage, Regulations, Conductors, Pipelines, Zinc ribbon, Soil resistivity, Grounding, Transmission lines, Copper, Touch potential, Line current
Keywords:
ac interference, induced ac voltages, interference modeling, power line collocation, pipeline voltage mitigation, pipeline grounding
© 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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