VALIDATION OF NEW CMS5-VVER NUCLEAR DATA LIBRARY USING CRITICAL EXPERIMENTS AND X2 FULL-CORE BENCHMARK
29th Symposium of AER on VVER Reactor Physics and Reactor Safety (2019, Energoland, Mochovce NPP, Slovakia)
reactor physics experiments and code validation
Rodolfo Ferrer and Tamer Bahadir
Studsvik’s in-core fuel management code package CMS5-VVER, which includes the CASMO5-VVER advanced lattice physics code and SIMULATE5-VVER three-dimensional nodal code, is currently in use for VVER-1000/1200 reactor analysis. Preliminary validation of CASMO5-VVER has been presented for various critical experiments using the ENDF/B-VII.1-based nuclear data library. Analogously, benchmarking of SIMULATE5-VVER for the X2 VVER-1000 benchmark has also been presented in previous publications using the same data library.
Recently, a new commercially available CASMO5-VVER nuclear data library has been generated based on the ENDF/B-VIII.0 evaluation. The ENDF/B-VIII.0 evaluation represents the state-of-the-art in nuclear data and features new incident-neutron cross section evaluations from the CIELO project for 1H, 16O, 56Fe, 235U, 238U and 239Pu. A summary of the main features and validation of the new CASMO5-VVER ENDF/B-VIII.0-based data library, referred to as E8R0 library, are presented in this work. Comparisons of predicted criticality and fission rate distributions to measurements from various hexagonal-lattice critical experiments, such as the ZR-6 (TIC) and P-Facility, along with CMS5-VVER benchmarking of the E8R0 library to the X2 full-core benchmark for Cycles 1 through 4, will be presented and discussed in this work.