A major electric utility presents case histories of corrosion failures, impacts, and corrective actions for electric power substations and distribution components based on field inspections and restoration / response activities from a dedicated team operating in Maryland. This paper will provide an overview of transmission substation structure component design / construction and corrosion risk factors, details on inspection findings / evaluations and mitigating actions, recommended actions for future integrity assessments, and recommended structure design and surveillance practices to optimize lessons learned. Results provide field perspectives of corrosion failures, consequences, and corrective actions from an operating utility’s perspective.

Subject
Electric current, Steel structures, Test methods, Substations, Materials, Walls, Structures, Outages, Inspection, Corrosion losses, Steel, Engineering, Equipment
Keywords:
Substation, Non-Destructive Evaluation, Steel Structure, Tapered Structure, Electric Utility, NDE testing, Tubular Structure, Risk-Based Maintenance
© 2017 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).
2017
Association for Materials Protection and Performance (AMPP)
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