TRACE/RELAP5 Comparative Calculations For Double-Ended LBLOCA and SBO (NUREG/IA-0475)

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Publication Information

Manuscript Completed: February 2016
Date Published: November 2016

Prepared by:
S. Iegan, A. Mazur,
Y. Vorobyov, O. Zhabin, S. Yanovskiy

State Nuclear Regulatory Inspectorate of Ukraine
And State Scientific and Technical Center
for Nuclear and Radiation Safety of Ukraine
9/11 Arsenalna str. Kyiv, Ukraine 01011

K. Tien, NRC Project Manager

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

Prepared as part of:
The Agreement on Research Participation and Technical Exchange
Under the Thermal-Hydraulic Code Applications and Maintenance Program (CAMP)

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

Availability Notice

Abstract

This report is developed by the State Nuclear Regulatory Inspectorate of Ukraine (SNRIU) and its technical support organization, the State Scientific and Technical Center for Nuclear and Radiation Safety of Ukraine (SSTC NRS), under Implementing Agreement On Thermal-Hydraulic Code Applications And Maintenance Between The United States Nuclear Regulatory Commission and State Nuclear Regulatory Inspectorate of Ukraine (signed in 2014) in accordance with Article III, Section C, of the Agreement.

The report provides description of quantitative analysis results of two initiating events for VVER-1000 reactor system with application of TRACE p4 and RELAP5/MOD3.2 codes. For these calculations RELAP5 input model for VVER-1000 was converted to TRACE code. The results obtained with both codes were compared to evaluate differences and to identify future needs for TRACE input deck enhancement.