Corrosion has many forms, occurring in a variety of plant and equipment, environments, materials and configurations. Matching sensor design and measurement technology is of paramount importance, yet something that may be overlooked outside of a laboratory environment. A range of sensor designs, including standard off-the-shelf linear polarization resistance (LPR) probes, have been validated over the past 22 years to measure such phenomena as pitting, crevice corrosion, microbial corrosion, stress corrosion cracking and localized corrosion in condensing, high hydrocarbon and high temperature environments. Over this period, on-line, real-time measurement technology has been refined to work with these sensors in providing the operator with simple process control-type data to assess both general and localized corrosion.

This paper discusses a number of sensor designs and the available field-ready technology that have been used to measure general and localized corrosion in real life, in-plant and operational applications. Examples include radioactive waste storage, chemical process industry and power generation applications.

Subject
Water, Materials, Corrosion currents, Corrosion rate, Aqueous environments, Instrumentation, Chemical processes, Constants, Corrosion data, Corrosion probes, Localized corrosion, Linear polarization resistance, Electrodes
Keywords:
corrosion, general, localized, pitting, electrochemical, monitoring, probe, design, vapor phase, multiphase
© 2005 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).
2005
Association for Materials Protection and Performance (AMPP)
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