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ANALYSIS OF CS-137 TO CS-134 ACTIVITY RATIO FOR FAILED FUEL EXPOSURE ESTIMATION

机译:最终燃料暴露估计的CS-137至CS-134活性比分析

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The Cs-134 to Cs-137 activity ratio of the Cs-134 and Cs-137 fission products released from failed fuel rods into primary coolant is very useful to identify the exposure along with the fuel batch of the failed fuel. The calculated and measured Cs-137 to Cs-134 radioactivity ratios of failed BWR and PWR fuels are compared and analyzed for better understanding their relationship. Moreover, the impacts of power uprate and fuel reload outage on calculated Cs-137 to Cs-134 activity ratios are studied and the physics behind the impacts are provided.
机译:从失效的燃料棒释放到一次冷却剂中的Cs-134和Cs-137裂变产物的Cs-134与Cs-137活度比,对于确定失效燃料的燃料暴露与燃料批次非常有用。比较和分析了失效的BWR和PWR燃料的Cs-137与Cs-134放射性比值,并进行了分析,以更好地了解它们之间的关系。此外,研究了功率提升和燃料重载中断对计算的Cs-137与Cs-134活度比的影响,并提供了影响背后的物理原理。

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