Fireside corrosion shortens the service life of tubes in coal-fired and oil-fired boilers. Waterwall and superheater/reheater tubes may experience substantial wall loss as a result of fireside corrosion. Waterwall tube failures due to fireside corrosion are less common than failure of superheater/reheater tubes. Therefore, comments respective to waterwall tube failures are addressed only in the introduction section of this paper. Mechanisms of failures involving fireside corrosion of superheaters/reheaters are presented as Case Studies using actual laboratory analysis data. Available approaches to minimize fireside corrosion of superheaters/reheaters are reviewed.

Subject
Metal surfaces, Microstructure, Tubes, Walls, Corrosion cracking, Melting point, Corrosion scales, Mechanical failure, Sodium, Metals, Surface layers, Ash, Deposit corrosion
© 2000 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).
2000
Association for Materials Protection and Performance (AMPP)
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