Monitoring corrosion and materials degradation using probes/sensors is a practical means of acquiring in-situ and site-specific data from ‘invisible’ underground structures such as oil & gas pipelines for the early warning of structural failure and the prediction of asset life. A difficulty in corrosion monitoring is the design of suitable corrosion probes for acquiring localized corrosion and materials degradation data from complex buried pipeline conditions. This paper provides an overview of some of recent progresses in this area and a brief discussion on future prospects. Several cases are presented to illustrate our approaches to monitoring and visualizing localized corrosion of buried steel under the effect of dynamic anodic transients; coating disbondment under overprotection potential; and localized corrosion under a simulated pipeline coating.

Subject
Underground structures, Coatings, Impedance, Pipelines, Corrosion detection, Material degradation, Mechanical failure, Corrosion data, Corrosion probes, Localized corrosion, Corrosion monitoring, Corrosion mechanisms, Electrodes
Keywords:
pipeline corrosion, corrosion monitoring, corrosion data, localized corrosion, coating degradation, corrosion probes
© 2018 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).
2018
Association for Materials Protection and Performance (AMPP)
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