Result of BETHSY Test 9.1.b Using RELAP5/MOD3 (NUREG/IA-0141)
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Date Published: August 1998
S. Petelin, B. Mavko, O. Gortnar, I. Ravnikar, G. Cerne
University of Ljubljana
"Joef Stefan" Institute
Prepared as part of:
The Agreement on Research Participation and Technical Exchange
under the International Thermal-Hydraulic Code Assessment and Maintenance Program
Office of Nuclear Regulatory Research
U.S. Nuclear Regulatory Commission
Washington, DC 20555-0001
RELAP5 computer code was used to simulate an experiment designated 9.1.b, (2" Cold Leg Break without HPSI and with Delayed Ultimate Procedure) performed on BETHSY integral test facility. This test is characterized as beyond design transients scenarios with unavailability of some safety and protection systems. The calculations which have been completed using the computer Sun Sparcstation 20 aim to evidence the difference between experimental and computed data. Generally, an agreement of major transient treads is shown to be obtained in the simulation.