RELAP5 Assessment Against PACTEL Experimental Data (NUREG/IA-0145, Revision 1)
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Date Published: November 1998
I. Parzer, B. Mavko, S. Petelin
University of Ljubljana
"Jozef Stefan" Institute
P.O. Box 100
Prepared as part of:
The Agreement on Research Participation and Technical Exchange
under the International Code Application and Maintenance Program (CAMP)
Office of Nuclear Regulatory Research
U.S. Nuclear Regulatory Commission
Washington, DC 20555-0001
The results of the pre-test and post-test calculations of OECD International Standard Problem no.33 (ISP-33) are presented. The frozen version of RELAP5 code version MOD2 and the latest released version MOD3.2 have been assessed against experimental data from PACTEL facility. Generally, predictions were in good agreement with experimental data, except in the most interesting part of the transient only MOD3.2 was able to follow periodic hot leg loop seal clearance phenomena and primary pressure oscillations closely.