ABSTRACT
This paper presents the results of the development, testing and field demonstration of a water jet nozzle array developed for the removal of adherent scale from secondary side tube surfaces in steam generators. The nozzle array was designed to be mounted to the end of a flexible intertube lance and deliver water jets to tube surfaces at pressures up to 4500 psi. The nozzle array has already been tested with an intertube tubesheet lancing system at the Indian Point 2 nuclear plant. A nozzle array of the type demonstrated is expected to be an integral part of a full bundle mechanical cleaning system currently under development. The availability of such a system may represent a cost effective alternative to chemical cleaning.
Subject
Test methods,
Water,
Materials,
Arrays,
Impingement,
Tubes,
Nozzles,
Chemical cleaning,
Steam generators,
Sludge,
Scale,
Deposit corrosion,
Cleaning
© 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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