A comprehensive study has been conducted to identify the key factors responsible for stress corrosion cracking incidents in low-pressure (LP) steam turbine discs in U.S. nuclear power plants. The study included a survey and interviews with domestic and foreign utilities, as well as a review of available public documents. Plant operating practices, water treatment methods, LP turbine rotor design and stress levels, and disc steel chemistry and mechanical properties were among the principal variables considered. Foreign and U.S. disc-cracking experience, relationships between variables and cracking experience, and the potential key-cracking variables identified are reported in this paper.

Subject
Crack growth, Intergranular stress corrosion cracking, Manufacturing, Nuclear power, Turbines, Condensers, Steel, Cracking, Steam, Cracks, Yield strength, Stress corrosion cracking, Water treatment facilities
© 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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