Abstract
The recent failure of a Kamyr continuous digester at a Southeastern pulp mill has caused in-service inspections to be made of similar units in an effect to detect the presence and extent of environmentally influenced cracking. This paper presents an approach to determining the reliability of cracked digesters for further operation, based on the depth of the derected cracks, the estimated crack growth rate (from literative data in similar environments) and the different "failure criteria" which may be applied. The objective of the above studies was to aid pulp mills in optimizing shut-down dates for further inspection and repair, thus continuing production while maintaining vessel integrity.
© 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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