This paper discusses several specialized functional tests which attempt to provide a more realistic evaluation of the suitability of coatings for use in harsh environments rather than relying strictly on the standard ASTM and DIN tests which are usually oriented toward characterizing material properties per se rather than characterizing the functional suitability of a product for a given use condition. It is not intended to give a complete test program for evaluating coatings, but to supplement the standard referenced tests previously discussed for onshore and offshore lines.

Particular tests described emphasize how coating performance is affected by the thermal expansion forces that attempt to prevent anchoring of pipelines; effects of the wet/dry cycles on buried lines; effect on cathodic disbondment at elevated temperatures, voltages, and pressures; ability to withstand a hot marine mastic pour; temperature cycling, shear and creep tests on concrete-coated pipe; and effects of stringer stress loading.

Subject
Test methods, Piping, Pipelines, Joints, Thermal stress, Cathodic disbondment, Shear, Concrete coatings, Weight coatings, Mastic, Soil, Concrete, Oil
© 1982 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).
1982
Association for Materials Protection and Performance (AMPP)
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