Authors & Affiliations

Uvakin M.A., Makhin I.V., Sotskov E.V.
Experimental and Design Organization "GIDROPRESS", Podolsk, Russia

Uvakin M.A. – Leading Engineer-designer, Cand. Sci. (Phys.-Math.), Experimental and Design Organization "GIDROPRESS". Contacts: 21, Ordzhonikidze st., Podolsk, Moscow region, Russia, 142103. Tel.: +7(4967) 65-26-25; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..
Makhin I.V. – Chief Expert, Dr. Sci. (Tech.), head of group, Experimental and Design Organization "GIDROPRESS".
Sotskov E.V. – head of department, deputy head of division, Experimental and Design Organization "GIDROPRESS".

Abstract

Work deals with RIA accidents safety assessment problem for VVER reactor, which is operating in normalized primary power grid frequency regulating regimes (FR). Frequency regulating regimes leads to turbine load variations and following continuously changing of main reactor facility parame-ters by feedbacks and regulators actions. Dynamic reactor conditions can be taking into account in safety assessment calculations and may needs in specialized methodical approach.
Considered dynamical method application performs by mathematical model for initial event and FR combination detection which is worst for safety. Model includes the full scope of calculation and theoretical reactor dynamics analysis during FR transient processes. Model approbation is given by some safety analysis examples such as RIA type accidents: control rod ejection, uncontrollable rod group withdrawal and control rod drop with space power distribution perturbation.

Keywords
mathematical model, power grid frequency regulation, reactivity accidents, safety assessment, dynamical initial condition

Article Text (PDF, in Russian)

References

UDC 621.039.56

Problems of Atomic Science and Technology. Series: Nuclear and Reactor Constants, 2019, issue 2, 2:16