【作者】 王琦； 侯龙；

【机构】 中国原子能科学研究院；

【摘要】 作为乏燃料临界控制材料含硼铝基材料(硼铝合金材料)的硼-10面密度是衡量材料中子吸收能力的标准,本文介绍了中子衰减方法测量乏燃料贮存格架所用硼铝合金材料的硼-10面密度及均匀性检测方法,为了保证检测结果符合临界安全的条件,需要对所有测点的中子穿透率数据进行统计学分析,按一定置信度和误差要求判断是否满足规格书中要求的硼-10面密度值。更多还原

【Abstract】 As the critical control material of spent fuel, the boron-10 areal density of Boron-containing aluminumbased materials(Boron-Al alloy material)is the standard to measure the neutron absorption capacity of materials. This paper introduces the neutron attenuation method to measure the boron-10 areal density and uniformity of boron aluminum alloy material used in spent fuel storage grillwork. In order to ensure that the test results meet the critical safety conditions, it is necessary to measure the neutron penetration rate of all test points. The data were statistically analyzed to determine whether the boron-10 areal density meets the requirements of the specification according to certain confidence and error requirements.更多还原