DYNAMICS OF CHANGES IN THE KINETIC PARAMETERS OF THE WWR-K RESEARCH REACTOR CORE WITH LOW-ENRICHED FUEL UNDER THE GRADUAL REPLACEMENT OF THE WATER REFLECTOR BY BERYLLIUM REFLECTOR
https://doi.org/10.52676/1729-7885-2018-1-114-119
Abstract
In 2015 the main reactor systems were modernized, including complete replacement of the control&instrumentation system within the conversion of the reactor WWR-K to low-enrichment fuel. The new reactor core configuration became compact and more energy-intensive; the character of fuel burn-up has changed. The number of C&I operating elements and their geometric parameters have been changed.
According to the concept of the reactor WWR-K conversion, the water reflector is planned to be gradually replaced by beryllium one during the first year of operation, which is associated with the change in the neutron-physical characteristics of the reactor. This paper is intended to determine the kinetic parameters of the reactor WWR-K associated with the formation of the beryllium reflector. The correct operation of C&I assumes the input of the core kinetic parameters values into the system, such as effective fraction of delayed neutrons, lifetime of instantaneous neutrons. This paper is devoted to determining the values of these parameters and the dynamics of their changes during the reactor operation.
About the Authors
D. S. Sairanbayev
Institute of Nuclear Physics Ministry of Energy RK
Kazakhstan
Almaty
Kazakhstan
Almaty
S. N. Koltochnik
Institute of Nuclear Physics Ministry of Energy RK
Kazakhstan
Almaty
Kazakhstan
Almaty
A. A. Shaimerdenov
Institute of Nuclear Physics Ministry of Energy RK
Kazakhstan
Almaty
Kazakhstan
Almaty
D. A. Nakipov
Institute of Nuclear Physics Ministry of Energy RK
Kazakhstan
Almaty
Kazakhstan
Almaty
Y. A. Kenzhin
Institute of Nuclear Physics Ministry of Energy RK
Kazakhstan
Almaty
Kazakhstan
Almaty
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Review
For citations:
Sairanbayev D.S., Koltochnik S.N., Shaimerdenov A.A., Nakipov D.A., Kenzhin Y.A. DYNAMICS OF CHANGES IN THE KINETIC PARAMETERS OF THE WWR-K RESEARCH REACTOR CORE WITH LOW-ENRICHED FUEL UNDER THE GRADUAL REPLACEMENT OF THE WATER REFLECTOR BY BERYLLIUM REFLECTOR. NNC RK Bulletin. 2018;(1):114-119. (In Russ.) https://doi.org/10.52676/1729-7885-2018-1-114-119
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