This paper discusses a new coating that can be applied to in-service pipelines to provide soil anchoring and long service life for elevated temperature operating conditions. In addition to laboratory evaluation, three widely different retrofitting projects which successfully used this coating are discussed. The new coating consists of a two part 100% solids liquid epoxy primer application, followed by wrapping a heat shrinkable polyethylene sleeve or tape that has been pre-coated with a crystalline hot melt adhesive; the polyethylene sleeve (or tape) is heat shrunk to provide a uniformly high tension on the outer covering which causes the molten hot melt adhesive to flow and fill any pipe irregularities and bond intimately to the pipe surface.

Subject
Primers, Pipe surfaces, Coating performance, Coating application, Piping, Adhesives, Tape, Pipelines, Fusion bonded epoxy coating, Epoxy coatings, Repair, Heat, Soil
© 1987 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).
1987
Association for Materials Protection and Performance (AMPP)
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