Approximate expression of energy released at 1st power peak in a criticality accident based on non-linear temperature feedback reactivity

Yamane, Yuichi

For a criticality accident due to instantaneous insertion of reactivity, an approximate expression of the energy released during the 1st peak of the power profile was derived based on non-linear temperature feedback reactivity considering the 2nd order of temperature rise as an extension of Nordheim-Fuchs model. Its application to the data of TRACY experiment shows good agreement between the calculation and experiment.

Language	:	Japanese
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Meeting title	:	日本原子力学会2015年春の年会
Held date	:	2015/03
Location (city)	:	日立
Location (country)	:	日本
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Keywords	:	臨界事故; 総核分裂数; 第1ピーク出力; 温度フィードバック反応度; Nordheim-Fuchs近似
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Registration No. : BB20142752
JAEA Abstracts No. :
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