Abstract
An 8” high pressure gas riser failed because of severe thinning from external corrosion in the splash zone due to the failure of the protective coating. The failure called into question the integrity of all the pipeline risers concession wide. Over the 30+ year life of the concession, pipeline risers have been coated with a variety of coating systems including tape wrap, epoxy, and vulcanized neoprene.
A multiphase inspection and remediation project was developed and executed for all 1027 production risers in the concession. The results and lessons learned from this effort are discussed including inspection techniques, manpower requirements, and the use of statistics for project scoping.
© 2005 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).
2005
Association for Materials Protection and Performance (AMPP)
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