【摘 要】
：
作为第3代核电系统,AP1000的设计使用寿命可达60 a以上。核电站开始运行后,乏燃料水池随之开始使用,因此需对乏池贮存格架的中子吸收体在60 a寿期内的有效性进行监测,以保证
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作为第3代核电系统,AP1000的设计使用寿命可达60 a以上。核电站开始运行后,乏燃料水池随之开始使用,因此需对乏池贮存格架的中子吸收体在60 a寿期内的有效性进行监测,以保证乏池的临界安全。为实现贮存格架内中子吸收体有效性监测,需计算监督试样的中子能谱以及寿期内不同时间监督样片位置处的累积中子注量。为此,首先需
As a 3rd generation nuclear power system, the AP1000 has a design life of up to 60 years. After the nuclear power plant started to operate, the spent fuel pool started to be used accordingly. Therefore, the effectiveness of the spent-less neutron absorber on the storage shelf in the 60-year life cycle needs to be monitored to ensure the critical safety of the spent pool. In order to monitor the effectiveness of neutron absorbers in storage grids, the neutron energy spectra of the supervised samples and the cumulative neutron fluence at the monitoring sample positions at different times during the lifetime are calculated. To do this, first of all
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