Problems created by internal deposition in water and steam carrying components of boilers are discussed. Methods of controlling deposition and their related problems are also described. Several case histories are presented which illustrate common, as well as unusual problems created by internal deposits. Failure mechanisms include caustic corrosion, hydrogen damage, stress corrosion cracking, overheating, contamination, and liquid metal embrittlement. Components include tubing from economizers, water walls, generating banks, superheaters, and reheaters.

Subject
Water, Materials, Tubes, Walls, Fissures, Internal surfaces, Metals, Overheating, Reheaters, Boilers, Deposit corrosion, Caustic stress corrosion cracking, Steam
Keywords:
deposit, boiler, failure, caustic, hydrogen, liquid metal embrittlement, overheating, stress, corrosion
© 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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