Authors & Affiliations

Sorokin A.P., Gulevich A.V., Klinov D.A., Kuzina Yu.A., Kamaev A.A., Ivanov A.P., Alekseev V.V., Morozov A.V.
A.I. Leypunsky Institute for Physics and Power Engineering, Obninsk, Russia

Sorokin A.P. – Senior Researcher, Dr. Sci. (Tech.). Contacts: 1, pl. Bondarenko, Obninsk, Kaluga region, Russia, 249033. Tel.: +7(484) 399-84-4; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..
Gulevich A.V. – Deputy Director of Nuclear Energetic Department, Dr. Sci. (Tech.).
Klinov D.A. – First Deputy Director General, Cand. Sci. (Tech.).
Kuzina Ju.A. – Deputy Director General – Director of Nuclear Energetic Department, Cand. Sci. (Tech.).
Kamaev A.A. – Deputy Director, Cand. Sci. (Tech.).
Ivanov A.P. – Leading Researcher.
Alekseev V.V. – Senior Researcher, Dr. Sci. (Tech.).
Morozov A.V. – Leading Researcher, Dr. Sci. (Tech.), professor.

Abstract

The presented results of neutron-physical, thermophysical, and technological studies have shown that it is possible in principle to provide the required parameters of a high-temperature (900–950 °С) reactor installation with a 600 MW reactor (heat) with a sodium coolant for hydrogen production and other innovative applications based on one of thermochemical cycles or high temperature electrolysis with a high coefficient of thermal use of electricity. The relative small size, type of coolant, and the choice of fissile material and structural materials make it possible to create a reactor with intrinsic properties that provide enhanced nuclear and radiation safety. The possibilities of using heatresistant radiation-resistant structural materials and using the proposed technology of hightemperature sodium coolant at a high hydrogen concentration are discussed. The features of the behavior of a high-temperature complex multicomponent heterogeneous system "sodium coolant – impurities – structural (technological) materials – protective gas" are analyzed, which are associated with an exponential temperature dependence of constants characterizing heat and mass transfer processes (diffusion, permeability, solubility, absorption rate, equilibrium gas pressures, etc.). It has been shown that the technology system for high-temperature sodium coolant differs significantly from systems at modern nuclear power plants. With an increase in the intensity of hydrogen sources coming from the third circuit to the second, compared with BN-600 NPPs by two to three orders of magnitude, the condition for its implementation is to increase the hydrogen concentration in sodium by two to three orders of magnitude compared to modern nuclear power plants in combination with the removal of hydrogen from sodium by evacuation through membranes from vanadium or niobium.

Keywords
NPP, high-temperature nuclear reactor, hydrogen production, sodium, reactor physics, core hydraulics, structural materials, impurities, coolant technology, safety systems, passive safety, emergency cooling.

Article Text (PDF, in Russian)

References

UDC 536.24:621.039.524.4:621.039.58

Problems of Atomic Science and Technology. Series: Nuclear and Reactor Constants, 2020, issue 1, 1:9