摘要
介绍了组装的桶装废物非破坏检测装置及其探测效率获得方法,并将探测效率的实验值与计算值进行了比较,其变化趋势一致。使用137 Cs标液制作实验源模拟桶装废物进行验证实验,在放射源随机分布、介质密度低于1.761g/cm3情况下,计算结果偏差在±20%内;在放射源极端分布、介质密度为1.538g/cm3情况下,计算结果偏差达-76%～152%,说明该方法用于核设施退役产生的桶装废物的分级是可行的。
The methods to acquire detection efficiency and the non-destructive assay system of barreled radioactive waste were introduced,and the changing tendencies between experimental result and theory are consistent.The verification experiments were carried through barreled radioactive materia which was made by 137Cs standard liquor.It is indicated that relative deviation is less than 20% when radioactive sources are random distribution and medium density is less than 1.761 g/cm3,and that relative deviation is from-76% to 152% when radioactive sources are extrem distribution and medium density is 1.538 g/cm3.Calculation results show that this method is reasonable to class barreled radioactive waste from decommissioning.
出处
《原子能科学技术》
EI
CAS
CSCD
北大核心
2012年第B09期671-676,共6页
Atomic Energy Science and Technology
关键词
非破坏检测
探测效率
随机分布
极端分布
non-destructive assay
detection efficiency
random distribution
extrem distribution
