EDN: BLPCXE
Authors & Affiliations
Alekseev V.V., Sorokin A.P., Kuzina Yu.A.
A.I. Leypunsky Institute of Physics and Power Engineering, Obninsk, Russia
Alekseev V.V. – Chief Researcher, Dr. Sci. (Tech.). Contacts: 1, Bondarenko sq., Obninsk, Kaluga region, 249033. Tel.: +7 (484) 399-42-34; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..
Sorokin A.P. – Chief Researcher, Dr. Sci. (Tech.).
Kuzina Yu.A. – Director of Nuclear Energetic Department, Cand. Sci. (Tech.), A.I. Leypunsky Institute for Physics and Power Engineering.
Abstract
To select the performance and capacity of coolant purification systems, to develop requirements for impurity control
systems, it is necessary to assess the intensity of all potential sources of
impurities and predict their impact on the operation of installations during a
given resource. Quantitative estimates of impurities entering the coolant
(oxygen, hydrogen, carbon) during the preparatory and commissioning works,
including sodium supply, installation pollution, and the initial period of
operation, can be performed with sufficient reliability for practice. Due to
the increase in the intensity of impurity sources during NPP operation at rated
power with increased coolant parameters, more complete impurity control is
required. The tasks of operational control of these impurities are to maintain
acceptable levels of impurities in the coolant, timely detection of deviations
from the nominal operating regimes and prevention of emergency situations. To
control impurities in sodium coolant, a significant number of intermittent and
continuous devices based on various physical and chemical principles have been
developed. A description of a number of sodium impurity control devices used in
modern plants is given. Taking into account the state of
development of means for monitoring impurities in sodium coolant and shielding
gas, as well as the experience of using devices in reactor plants and
experimental stands, achieved in recent years, the necessary set of means for
monitoring impurities in sodium and gas cavity for their in-vessel placement
was determined in the tank of a promising sodium reactor.
Keywords
sodium coolant, impurities, control devices,
temperature, oxygen, hydrogen, corrosion products, shielding gas, cork
indicator, diffusion membrane
Article Text (PDF, in Russian)
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UDC 621.03921
Problems of Atomic Science and Technology. Series: Nuclear and Reactor Constants, 2022, issue 2, 1:18
