During the past three years, we have been working on the development of a liquid applied coating solution to provide protection against Corrosion Under Insulation (CUI).

It was evident that different types of coatings showed different behaviour depending of the test methods used. We found particularly challenging to use the results of accelerated testing to predict field performance.

Although there are some standards or guides for specifying coatings for CUI protection (NACE SP 0198-2010, NORSOK M501 ed. 6) there is lack of broadly accepted methods of test. The current standards do not necessarily agree on what the optimum solution is. Furthermore, the existing knowledge is habitually kept inside coating manufacturers and the full picture of the performance evaluation of CUI coatings is not always well understood.

This paper is an account of the problems, challenges and solutions that we have found during the development of a liquid coating solution to provide protection against CUI, and the lessons that can be extracted in order to facilitate future developments in the field.

Subject
Test methods, Coating performance, Thin films, Coatings, Piping, Silicones, Wool, Epoxy coatings, Salt spray corrosion testing, Corrosion under insulation, Corrosion protection, Epoxies, High temperature
Keywords:
corrosion under insulation, CUI, protective coatings, test methods development
© 2016 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).
2016
Association for Materials Protection and Performance (AMPP)
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