Mechanical damage is a leading cause of pipeline incidents. This paper will discuss the utilization of high-resolution magnetic flux leakage (MFL) in-line-inspection (ILI) technology for the detection of mechanical damage. The basis for this paper is the premise that nearly all pipeline mechanical damage involves some amount of pipe deformation and metal loss, which can be detected by high-resolution MFL technology. This discussion will include the technical aspects of the deformation and the metal loss signals, as well as the results of the field correlation study. These results include the success rate, the overcall rate, the under-call rate, and a comparison against the state-of-the art caliper technology.

Subject
Piping, Deformation, Calipers, Pipelines, Tools, Metal loss, Mechanical damage, Coating damage, Anomalies, Construction, Concrete coatings, Cracks, Damage
© 2004 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).
2004
Association for Materials Protection and Performance (AMPP)
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