Effects of changes in the coolant flow rate of the VVER reactor to the response from the self-powered neutron detectors of the in-core monitoring system: simulation of transient modes in the PRIM-AES software package
D. A. Gornostaev, A. Yu. Kurchenkov, A. M. Musikhin, Yu. M. Semchenkov
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引用次数: 0
Abstract
In the present paper, we use computational simulation to investigate the response of self-powered neutron detectors (SPNDs) to changes in the coolant flow rate of the measured fuel assembly (FA). A model problem of reducing the coolant flow rate in several measured FAs is considered. Their response is assessed, including the difference in the SPND current before and after introducing a disturbance caused by a decrease in the flow rate through the FA. In some cases, readings of in-core monitoring system SPNDs can be used to diagnose a decrease in the flow rate through the FA.
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.