2024 Issue 4

EDN: OHWKKJ

Authors & Affiliations

Kuzenkova D.S.¹, Lapin A.S.¹, Vnukov R.A.¹, Kashirina V.E.¹, Kotov Ya.A.¹, Nevinitsa V.A.¹, Kolesov V.V.¹, Blandinsky V.Yu.¹, Fomichenko P.A.¹, Bobrov E.A.¹ Osipov A.M.¹, Mikhailov G.M.², Shaginyan R.A.², Zhukov A.M.², Korobeynikova L.V.², Gulevich A.V.², Manturov G.N.², Eliseev V.A.², Stogov V.Yu.², Bedniakov S.M.², Izotov V.V.², Prishepa V.V.^2
1 National Research Center “Kurchatov Institute”, Moscow, Russia
² A.I. Leypunsky Institute for Physics and Power Engineering, Obninsk, Russia

Kuzenkova D.S.¹ – Junior Researcher, Cand. Sci. (Tech.).Contacts: 1, pl. Akademika Kurchatova, Moscow, Russia, 123182. Tel.: +7 (910) 863-14-14; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..
Lapin A.S.¹ – Laboratory Assistant-Researcher.
Vnukov R.A.¹ – Laboratory Assistant-Researcher.
Kashirina V.E.¹ – Laboratory Assistant-Researcher.
Kotov Ya.A.¹ – Senior Researcher.
Nevinitsa V.A.¹ – Head of Department, Cand. Sci. (Tech.).
Kolesov V.V.¹ – Head of Laboratory, Cand. Sci. (Phys.-Math.).
Blandinsky V.Yu.¹ – Deputy Head for International Affairs – Academic Secretary, Candidate of Technical Sciences.
Fomichenko P.A.¹ – Deputy Head of the Complex.
Bobrov E.A.¹ – Head of Department, Cand. Sci. (Tech.).
Osipov A.M.¹ – Head of Department, Cand. Sci. (Tech.).
Mikhailov G.M.² – Head of Laboratory, Cand. Sci. (Tech.).
Shaginyan R.A.² – Research Engineer.
Zhukov A.M.¹ – Head of the BFS Critical Stand Complex, Cand. Sci. (Tech.).
Korobeynikova L.V.² – Senior Researcher.
Gulevich A.V.² – Deputy Head of Department, Dr. Sci. (Phys.-Math.).
Manturov G.N.² – Chief Researcher, Dr. Sci. (Tech.).
Eliseev V.A.² – Head of Laboratory, Cand. Sci. (Tech.).
Stogov V.Yu.² – Senior Researcher.
Bednyakov S.M.² – Leading Researcher, Cand. Sci. (Tech.).
Izotov V.V.² – Senior Researcher.
Prishchepa V.V.² – Senior Researcherng.

Abstract

This paper is devoted to computational modeling using Serpent and MCNP5 of experimental configurations of the BFS assemblies with and without a central light-water insert (BFS-93) (BFS-57 and BFS-59). This modeling is necessary, on the one hand, for verification of the software complexes for VVER-S reactor calculation. On the other hand – for verification of the calculation approaches, the necessity of which is connected with the increasing need for the computational planning of experiments preceding the experimental modeling of the VVER-S reactor on the BFS stand and analysis of the results. This is caused by the fact that the VVER-S reactor operation is based on new physical principles: the possibility to influence the reactivity by changing the water-fuel ratio and, consequently, the neutron spectrum in the core. Another peculiarity of the modeled reactor is the use of uranium-plutonium fuel with plutonium from VVER spent nuclear fuel, which causes a more fast, as compared to uranium fuel, neutron spectrum, the formation of which occurs through the realization of a complex set of physical processes. The following experiments have been analyzed computationally: criticality calculations, axial and radial distributions of energy release, spectral indices and axial distribution of fission reaction rates in the measurement channel. The computational analysis of experimental data extends the verification basis, and the obtained results can be used for verification of software programs that are planned to be certified for VVER-S reactor calculations. The development of the research program required a significant number of neutron-physical calculations, and those experimental configurations of critical assemblies that most closely reflect the physical and spectral effects, as well as fuel compositions, were chosen.

Keywords
BFS-93, critical experimental facility, VVER-S, VVER-SCP neutron energy spectrum, heterogeneous structure, driver, fuel element insertion

Article Text (PDF, in Russian)

References

UDC 621.039

Problems of Atomic Science and Technology. Series: Nuclear and Reactor Constants, 2024, no. 4, 4:9