United States Nuclear Regulatory Commission - Protecting People and the Environment

Assessment of RELAP5/MOD2 Using the Test Data of REWET-II Reflooding Experiment SGI/R (NUREG/IA-0090)

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Publication Information

Date Published: May 1993

Prepared by:
A. Hämäläinen

Technical Research Centre of Finland
Nuclear Engineering Laboratory
P.O. Box 169
SF-00181 Helsinki, Finland

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

Office of Nuclear Regulatory Research
U.S. Nuclear Regulatory Commission
Washington, DC 20555-0001

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Abstract

An analyses of a reflooding experiment with RELAP5/MOD2 cycle 36.04 is presented. The experiment had been carried out in the REWET-II facility simulating the reactor core with a bundle of 19 electrically heated rods. On the basis of the results of two calculations recommendations for the core nodalization are presented, and a modification to the code is proposed.

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