Experimental assessment of the temperature effect of reactivity with extracted control rods

被引：0
作者：
Vinogorov N.A. [1 ]
机构：
[1] Aleksandrov Research Technological Institute (NITI), Sosnovyi Bor, Leningradskaya Oblast
来源：
Atomic Energy | 2010年 / 108卷 / 05期
关键词：
Temperature Effect; Temperature Coefficient; Experimental Assessment; VVER Reactor; Water Volume Fraction;
D O I：
10.1007/s10512-010-9306-z
中图分类号：
学科分类号：
摘要：
The temperature effect of reactivity with extracted control rods in the reactor core were investigated. Measurements of the temperature coefficient with overcompensation of the rods provides information on the dependence of the temperature coefficient on the position of the rods. Overcompensation of the rods was performed while maintaining the coolant temperature constant. The change of the water volume fraction characterizes the change of the uranium-water ratio. At fixed temperature a correlation is observed between the relative change of the temperature coefficient and the water fractions in the core. The results also show a difference of the temperature coefficient in different states. Integration of the functions in the temperature range 50-298°C estimates the effect of reactivity as, 5.45% and -3.99%, respectively.
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页码：389 / 392
页数：3
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