PROBLEMS OF ATOMIC SCIENCE AND TECHNOLOGY
Series: Nuclear and Reactor Constants

since 1971

Русский (РФ)

ISSN 2414-1038 (online)

ALGORITHMS FOR AXIAL POWER FIELDS RECONSTITUTION AND THERMAHYDRAULIC PARAMETERS CALCULATIONS IN REAL TIME SCALE FOR ISOTOPE REACTOR CORE

EDN: SYUNXO

Authors & Affiliations

Lepehin A.N., Savinovskii A.S., Sorokin S.E., Shkokov M.G., Malkin S.A., Ushatikov A.S.
Afrikantov Experimental Design Bureau for Mechanical Engineering, Nizhny Novgorod, Russia

Lepehin A.N. – Head of Department, Cand. Sci. (Tech.).
Malkin S.A. – Lead Design Engineer, Cand. Sci. (Tech.).
Ushatikov A.S. – Design Engineer.
Sorokin S.E. – Head of Group.
Shkokov M.G. – Lead Design Engineer.
Savinovskii A.S. – Lead Design Engineer. Contacts: 15, proezd Burnakovskii, Nizhnyi Novgorod, Russia, 603074. Tel.: +7(831) 243-99-99, ext. 59-97, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..

Abstract

The article presents the description and verification results of algorithms for reconstitution of axial power fields and the thermahydraulic parameters calculating of the reactor for the isotope production. The algorithms are designed for axial power fields control in the core, as well as the subsequent calculation of the temperatures of cladding of the fuel elements in real time scale. The article presents the general principles of implementing algorithms, as well as their flow diagrams. The functioning of the algorithm reconstitution of axial power fields is provided by collecting information from neutron-physical monitoring sensors of the in-core monitoring system, data on the position of the operating elements of the control and protection system, as well as information on the loading of core channels with irradiated materials. The functioning of the algorithm for calculating the temperatures of fuel elements claddings and onset of nucleate boiling ratio in real time is provided by collecting information from the coolant temperature sensors from different systems. In particular, such measured parameters are used as coolant temperature at the outlet from core channels, coolant temperature at the inlet and outlet from the reactor, calculated from the parameters of the 1st and 2nd loop reactor power value.

Keywords
vortex boundary layer, turbulent eddies, shear layer, large eddies, pseudoturbulence, homogeneous combustion, stochastic dynamics, vortex model, continuous medium, thermal gas aerodynamics

Article Text (PDF, in Russian)

References

UDC 621.039.51

Problems of Atomic Science and Technology. Series: Nuclear and Reactor Constants, 2025, no. 3, 3:18