Extension of the X2 VVER-1000 benchmark by a control rod cluster ejection exercise
Extension of the X2 VVER-1000 benchmark by a control rod cluster ejection exercise
Bilodid, Y.; Fischer, M.; Zilly, M.; Aures, A.; Henry, R.; Kilger, R.; Kliem, S.
This paper proposes a new benchmark for VVER-1000 control rod ejection transient. The benchmark is designed for code-to-code comparison and its purpose is testing and verifications of time-dependent solvers, core models and cross section generation methodology. Four solutions obtained using different combinations of three lattice transport, two nodal neutronics, and two thermo-hydraulic codes are analyzed, demonstrating good agreement in predicting transient reactivity and power peaks and highlighting the impact of gas gap modeling and DNBR correlation on simulation results.
Keywords: X2 VVER-1000; Control Rod Ejection; DYN3D; PARCS; ATHLET
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Annals of Nuclear Energy 192(2023), 110007
DOI: 10.1016/j.anucene.2023.110007
Permalink: https://www.hzdr.de/publications/Publ-37199