Generation of group constants at GRS for the Rostov-2 benchmark

Conference · Fri Jul 01 04:00:00 EDT 2022

OSTI ID:23178740

Henry, Romain; Perin, Yann; Travleev, Anton ^[1]

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1. Gesellschaft fuer Anlagen- und Reaktorsicherheit - GRS, gGmbH, Boltzmannstr. 14, 85748 Garching (Germany)

The OECD/NEA benchmark entitled 'Reactivity compensation of boron dilution by stepwise insertion of control rod cluster into the VVER-1000 core' aims at validating and assessing high fidelity multi-physics simulation code capabilities by comparison with the high-quality measurements performed at the nuclear power plant Rostov unit 2. The benchmark is divided into 2 phases: assembly wise and pin-by-pin resolution of the multi-physics problems. Multi-physics simulation requires the generation of an accurate parametrized few-group cross-section library, and so this benchmark offers an opportunity to validate the methodology for their generation. Based on the specifications of the benchmark, the core simulator KMACS developed at GRS was used to generate a library of cross-sections as well as the burnup distribution required to model the transient scenario of the benchmark at the assembly level. The assessment of the library is performed through comparison with measured values obtained at the initial state of the transient. Good agreement was obtained in terms of critical boron concentration, peaking factors and power profiles. (authors)

• Research Organization: American Nuclear Society - ANS, La Grange Park, IL 60526 (United States)
• OSTI ID: 23178740
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
BENCHMARKS
BORON
BURNUP
COMPUTER CALCULATIONS
GROUP CONSTANTS
K CODES
POWER DISTRIBUTION
VALIDATION
WWER TYPE REACTORS