Initial value of monotonically decreasing power in criticality accident with instantaneous reactivity insertion

Yamane, Yuichi

For a criticality accident due to instantaneous insertion of reactivity, an equation has been derived based on one-point kinetics, by which equation the initial value of monotonically decreasing power following the first peak is expressed as a function of the initial excess reactivity and other kinetics parameters. The results obtained by using the equation and one-point kinetics code, AGNES, were compared to each other and the maximum difference between them was confirmed to be within 15%.

Language	:	Japanese
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Meeting title	:	日本原子力学会2015年秋の大会
Held date	:	2015/09
Location (city)	:	静岡
Location (country)	:	日本
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Keywords	:	臨界事故; 出力単調減少; 第1ピーク出力; 温度フィードバック反応度; AGNES
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Registration No. : BB20150761
JAEA Abstracts No. :
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