In January 1978, NWT Corporation was contracted by the Electric Power Research Institute to obtain electrochemical potential (ECP) measurements of 304 stainless steel during exposure to reactor water at an operating boiling water reactor (BWR). Existing electrode technology was inadequate for long term BWR ECP monitoring. To facilitate such measurements, reference and measuring electrode designs for high purity waters at high temperatures and pressures were developed, qualified in a laboratory test facility to 288°C (550°F) and 9 x 106 pascals (1330 psig), and demonstrated at an operating BWR. Unique design features allow satisfactory electrode operation for about a year at the indicated conditions. Routine long-term ECP monitoring in BWR reactor water systems is now achievable.

Subject
Water, Boiling water reactors, Reactors, Autoclaves, Reference electrodes, Potential measurements, Teflon, Liquids, Oxygen, Stainless steel, Chlorides, Electrodes, Electrode potential
© 1983 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).
1983
Association for Materials Protection and Performance (AMPP)
You do not currently have access to this content.