This paper discusses the application of electrochemical techniques in the investigation of premature corrosion failure encountered in a major metropolitan wastewater treatment plant. Electrochemical noise, linear polarization, harmonic distortion analysis, electrical resistance and wet chemistry techniques were combined to define the extent and investigate the cause of aggressive corrosion behavior observed at the facility. How these methods were applied and the results of the combined approach investigation are presented.

Subject
Pits, Piping, Corrosion rate, Probes, Tides, Inspection, Corrosion data, Pitting, Electrical resistance probes, Linear polarization resistance, Electrodes, Conductivity, Waste water
Keywords:
corrosion, electrochemical noise, harmonic distortion, electrical resistance, linear polarization, pitting, wastewater
© 2004 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).
2004
Association for Materials Protection and Performance (AMPP)
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