Wet oxidation consists of oxidizing the organics in sewage1  or industrial waste streams2  to water and carbon dioxide at elevated temperatures (to 300°C) in water solutions. The oxidation is by oxygen, usually from air. During the early stages of testing this process on synthetic sewage there occurred several leaks in the 316 heat exchanger. The heat exchanger was replaced and testing continued with septic sewage. Again several leaks developed in the second 316 heat exchanger. Analyses of both 316 stainless heat exchangers show the leaks to be a result of stress corrosion cracking.

Subject
Test methods, Stainless alloys, Corrosion rate, Nickel based alloys, Tubes, Vapors, Liquids, C ring stress corrosion testing, Tubing, Pitting, Alloys, Stress corrosion cracking, Oxidation
© 1979 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).
1979
Association for Materials Protection and Performance (AMPP)
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