It has long been recognized that good surface preparation is a critical requirement to insure optimum service life of most protective coating systems. The surface preparation issue is particularly significant in the in-situ application of internal pipeline coatings where "standard", line-of-sight, abrasive blasting is not possible. Coupling marginal surface preparation with the inherent application control difficulties associated with the in-situ coating procedure can result in the premature failure of the internal coating system.

This paper discusses the critical issues of the in-situ internal coating procedure and offers an alternate in-situ surface preparation technique which achieves blasted surface characteristics consistent with the existing optimum blasting standards established by NACE.

Subject
Abrasive blasting, Pipe surfaces, Coating performance, Thin films, Coating application, Materials, Piping, Pipelines, Surface preparation, Internal coatings, Nitrogen, Coating materials, Coating systems
© 1988 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).
1988
Association for Materials Protection and Performance (AMPP)
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