Assessment of RELAP5/MOD2, Cycle 36.04 Against LOFT Small Break Experiment L3-5 (NUREG/IA-0037)

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Publication Information

Date Published: March 1992

Prepared by:
J. Eriksson

Swedish Nuclear Power Inspectorate
S-61182 Nykoping
Sweden

Prepared as part of:
The Agreement on Research Participation and Technical Exchange
under the International Thermal-Hydraulic Code Assessment
and Application Program (ICAP)

Published by:
Office of Nuclear Regulatory Research
U.S. Nuclear Regulatory Commission
Washington, DC 20555

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Abstract

The LOFT small break experiment L3-5 has been analyzed using the RELAP5/MOD2 code. The code version used, Cycle 36.04, is a frozen version of the code.

Three calculations were carried out in order to study the sensitivity to changes of steam generator modelling and of core bypass flow. The differences between the calculations and the experiment have been quantified over intervals in real time for a number of variables available from the experiment.