A new pipeline protection system, based on polyolefin and fusion bonded epoxy has been developed and applied in the United States. This new plant coating system incorporates the desired performance characteristics of the multi-layer coating systems but at a reduced application cost. A polyolefin outerlayer is spirally applied over partially cured fusion bonded epoxy coated pipe. The heat retained in the pipe initiates a reaction in the polyolefin outerlayer that produces a chemical bond to the epoxy and fuses the outerlayer to itself at the spiral overlap. The new coating system and application will be described. Laboratory and field data will be presented that illustrates the performance characteristics superior to the traditional, stand alone fusion bonded epoxy coating.

Subject
Coated pipes, Coating application, Water, Piping, Fusion bonded epoxy coating, Cathodic disbondment, Bending, Shear, Polyolefins, Heat, Epoxies, Soil, Coating systems
Keywords:
fused polyolefin, fusion bonded epoxy primer, multi-layer system, cathodic disbondmemt, bond strength
© 1994 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).
1994
Association for Materials Protection and Performance (AMPP)
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