Coating is usually applied as a primary corrosion control measure for buried oil and gas pipelines. Quite often, cathodic protection system is also applied in conjunction with coating to compensate for the anticipated imperfection/defects that may occur in the coating system during its application and service life.

Upon completion of buried pipelines installation, most operators do not know the importance and advantages of regular coating integrity survey of their buried/submerged facilities. They pay little or no attention to the condition of the coating ignoring the fact that coatings will always deteriorate.

This paper thereby discusses the importance of conducting regular integrity survey of buried oil and gas pipelines with practical analysis based on previous field experience.

Subject
Holidays, Coating repair, Materials, Cathodic protection, Pipelines, Coating surveys, Mechanical failure, Rehabilitation, Engineers, Below ground pipelines, Cathodic protection survey, Coating defects, Maintenance
Keywords:
cathodic protection, direct current voltage gradient (DCVG), corrosion, coating integrity survey (CIS), defects, holiday, under-protection
© 2015 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).
2015
Association for Materials Protection and Performance (AMPP)
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