Abstract
To facilitate decision making when stress corrosion cracks are found during excavations or in-line inspections of pipelines, a hierarchy of crack-severity rankings has been developed, based upon predicted failure pressure as calculated from the crack sizes. By assuming a crack growth rate, the type and timing of mitigating actions can be determined, as well as appropriate re-assessment intervals for smaller cracks that may remain after the first assessment. The sensitivity of the analysis to variations in pipe dimensions and properties has been examined. Based upon this work, a set of guidelines has been proposed for inclusion in Appendix A of the ASME B31.8S Integrity Management Standard.
© 2008 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).
2008
Association for Materials Protection and Performance (AMPP)
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