M. A. Zakharov, A. V. Kotsarev, M. P. Lizorkin, V. V. Morozov, B. E. Shumskiy
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引用次数: 0
Abstract
The article examines the effects of duration and movement mode of the control rod of the VVER-1200 control and protection system during its fast ejection from the core on the results of accident simulation. Two modes of movement are considered including uniform and equi-accelerated modes, in which the duration of the bottom-stop ejection varies from 0.01 to 5 s. The ejection of the control rod is simulated for reactor states of a full and minimum-controlled power, as well as with and without leakage for the first six 18-month VVER-1200 fuel campaigns. Calculations were carried out using the ATHLET/BIPR-VVER code (version 1.0). The performed studies demonstrated insignificant sensitivity of extreme fuel temperatures and departure-from-nucleate-boiling margin to ejection parameters. The approximated uniform movement of the control rod during 0.1 s of ejection is sufficiently conservative for use in the deterministic safety analysis of VVER nuclear power plants.
期刊介绍：
Atomic Energy publishes papers and review articles dealing with the latest developments in the peaceful uses of atomic energy. Topics include nuclear chemistry and physics, plasma physics, accelerator characteristics, reactor economics and engineering, applications of isotopes, and radiation monitoring and safety.
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