Corrosion accounts for more than one third of the integrity problems on pipelines operating in Alberta. Gas pipelines in particular suffer the threat of external corrosion where protective coatings have fail and created shielding disbondments.

This paper will review the sampling and analysis of corrosion products with a view to describing corrosion scenario's which occur under shielding disbondments in the field. Understanding this environment is of timely interest both as input to risk assessment models and as part of the current research effort into stress corrosion cracking on pipelines.

Subject
Steel surfaces, Water, Mackinawite, Cathodic protection, Corrosion rate, Iron sulfides, Pipelines, Iron, Siderite, Minerals, Corrosion products, Steel, Oxygen
© 1995 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).
1995
Association for Materials Protection and Performance (AMPP)
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