With the increased emphasis on energy efficiency many cooling systems are being operated on an intermittent basis. This has resulted in an increased demand being placed on cooling water treatments to inhibit standby corrosion. The use of a cationic polymer in conjunction with an amine oxide phosphonate and low levels of sodium nitrite has been found to be very effective at inhibiting corrosion in open recirculating cooling water over a wide range of water quality. This combination has been found to be particularly effective under low flow or stagnant conditions.

Subject
Acids, Water, Sodium nitrite, Nitrites, Corrosion rate, Phosphonates, Polymers, Cooling systems, Corrosion inhibitors, Steel, Copper, Cooling water, Anodic inhibitors
Keywords:
nitrite, amine oxide, standby corrosion, low flow
© 1993 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).
1993
Association for Materials Protection and Performance (AMPP)
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