Authors & Affiliations

Beznosov A.V., Bokova T.A., Bokov P.A., Shumilkov A.I., Volkov N.S., Marov A.R.
Nizhny Novgorod State Technical University. R.E. Alekseeva, Nizhny Novgorod, Russia

Beznosov A.V. – Professor, Honored Worker of Science of the Russian Federation, Dr. Sci. (Tech.), Institute of Nuclear Power Engineering and Technical Physics, Nizhny Novgorod State Technical University. R.E. Alekseeva.
Bokova T.A. – Associate professor, Cand. Sci. (Tech.), Institute of Nuclear Power Engineering and Technical Physics, Nizhny Novgorod State Technical University. R.E. Alekseeva. Contacts: 24, Minina st., Nizhny Novgorod, Russia, 603155. Tel.: +7(910)393-18-94; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..
Bokov P.A. – Senior Lecturer, Cand. Sci. (Tech.), Institute of Nuclear Power Engineering and Technical Physics, Nizhny Novgorod State Technical University. R.E. Alekseeva.
Shumilkov A.I. – Engineer, Institute of Nuclear Power Engineering and Technical Physics, Nizhny Novgorod State Technical University. R.E. Alekseeva.
Volkov N.S. – Master of the second year of training, Institute of Nuclear Power Engineering and Technical Physics, Nizhny Novgorod State Technical University. R.E. Alekseeva.
Marov A.R. – Master of the first year of training, Institute of Nuclear Power Engineering and Technical Physics, Nizhny Novgorod State Technical University. R.E. Alekseeva.

Abstract

Ensuring compliance with coolant technology in all modes of operation of reactor systems with lead coolant requires additional equipment to be introduced into the circuit to maintain the required thermodynamic activity of oxygen necessary to prevent the formation of lead oxides, but at the same time sufficient to form protective oxide coatings of structural materials.
The experience obtained in recent years shows that the surface and ejection regeneration conducted on the NP705 nest and the KM-1 stand were implicitly combined with the treatment of the contour with two-component mixtures of the HLMC-hydrogen-containing gas mixture, which significantly influenced the efficiency of the process of cleaning the contour from the oxides of HLMC.
In NPP type BREST, when the lead is poured through the upper edge of the constant-pressure pipe, the JFMT jets falling on its free surface also capture the gas and form a two-component mixture of HLMC-gas. Large bubbles are gauged and separated on the free surface of lead. Smaller bubbles (1-2 mm or less) can be trapped by the flow of the liquid medium and enter the main circulation circuit of the reactor.
In the reactor plant in the NSTU with horizontal steam generators of FRL-HSG, it is proposed to introduce gas into the circulation flow of the reactor circuit in two elements:
- in a special device for forming sections of jets, sprays, droplets of HLMC flow, then falling on the free surface of the coolant and trapping gas bubbles into the lead;
- in the inlet chambers of the main circulation pumps due to the energy of the jet entering the MCP after the steam generators.

Keywords
coolant technology, HLMC, two-component mixture, MCP, BREST, lead, free surface, jet, stream, FRL-HSG, device

Article Text (PDF, in Russian)

References

UDC 621.039

Problems of Atomic Science and Technology. Series: Nuclear and Reactor Constants", 2017, special issue, 5:3