The GE/Harwell BWR water radiolysis model has been substantially refined by including detailed doserate and velocity profiles, new chemical rate-constants and high temperature G-values, flow path region specific hydrogen peroxide decomposition rates and spatial detail in all the excore regions in the primary coolant circuit. An additional region, the outer bypass, and multiple jet pumps have been included in the circuit. The results of calculations for two reactors are presented. Recirculation and steam oxygen and hydrogen levels give reasonable agreement with the data. ECP values in the lower plenum region are also estimated in a preliminary way.

Subject
Circuits, Water, Intergranular stress corrosion cracking, Boiling water reactors, Hydrogen concentration, Recirculation, Reactors, Hydrogen peroxide, Constants, Feedwater, Oxygen, Steam, Hydrogen
Keywords:
boiling water reactor, hydrogen water chemistry, intergranular stress corrosion cracking, stainless steel, water radiolysis modeling
© 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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