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Buiron, L.*; Rimpault, G*; Fontaine, B.*; Kim, T. K.*; Stauff, N. E.*; Taiwo, T. A.*; Yamaji, Akifumi*; Gulliford, J.*; Fridmann, E.*; Pataki, I.*; et al.
Proceedings of International Conference on the Physics of Reactors; The Role of Reactor Physics toward a Sustainable Future (PHYSOR 2014) (CD-ROM), 16 Pages, 2014/09
Within the activities of the Working Party on Scientific Issues of Reactor Systems (WPRS) of the OECD, an international collaboration is ongoing on the neutronic analyses of several Generation-IV Sodium-cooled Fast Reactor (SFR) concepts. This paper summarizes the results obtained by participants from institutions of different countries (ANL, CEA, ENEA, HZDR, JAEA, CER, KIT, UIUC) for the large core numerical benchmarks. These results have been obtained using different calculation methods and analysis tools to estimate the core reactivity and isotopic composition evolution, neutronic feedbacks and power distribution. For the different core concepts analyzed, a satisfactory agreement was obtained between participants despite the different calculation schemes used. A good agreement was generally obtained when comparing compositions after burnup, the delayed neutron fraction, the Doppler coefficient, and the sodium void worth. However, some noticeable discrepancies between the k-effective values were observed and are explained in this paper. These are mostly due to the different neutronic libraries employed (JEFF3.1, ENDFB7.0 or JENDL-4.0) and to a lesser extent the calculations methods.
Takano, Kazuya; Taninaka, Hiroshi; Maruyama, Shuhei; Kuwagaki, Kazuki; Oki, Shigeo; Kan, Taro*; Nakazato, Wataru*; Oshima, Takumi*; Fukuchi, Ikuo*; Koike, Hiroki*; et al.
no journal, ,
As a part of the international collaboration between France and Japan for the development of sodium-cooled fast reactors (SFRs) since 2020, VVUQ on neutronics and shielding design methods for fast reactors has been jointly studied and the methods and effects on prediction accuracy improvements have been assessed. The Japan-France joint experimental database, numerical benchmark problems, and VVUQ methods obtained through this cooperation will be an important knowledge for obtaining a licensing approval for neutronics design and shielding design of future SFRs for demonstration and commercialization.