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原文传递 Feasibility of subcriticality and NDA measurements for spent fuel by frequency analysis techniques with{sup 252}Cf

题名：	Feasibility of subcriticality and NDA measurements for spent fuel by frequency analysis techniques with{sup 252}Cf
作者：	Mattingly, J.K.;Valentine, T.E.;Mihalczo, J.T.;
关键词：	42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES;05 NUCLEAR FUELS ; SPENT FUELS; MULTIPLICATION FACTORS; FISSILE MATERIALS; NONDESTRUCTIVE ANALYSIS; CRITICALITY; FUEL STORAGE POOLS
摘要：	The{sup 252}Cf-source-driven frequency analysis method can be used for measuring the subcritical neutron multiplication factor of arrays of LWR fuel and as little as a single PWR fuel assembly. These measurements can be used to verify the criticality safety margins of spent LWR fuel configurations and thus could be a means of obtaining the information to justify burnup credit for spent LWR transportation/storage casks. In addition, the data can be used to validate calculational methods for criticality safety. These measurements provide parameters that have a higher sensitivity to changes in fissile mass than neutron multiplication factor and thus serve as a better test of calculational methods. The analysis have also shown that measurement of the cross power spectral density (CPSD) between detectors on one side of a single fuel assembly and an internal or external{sup 252}Cf source driving the fission chain multiplication process can be used for nondestructive assay of fissile mass along the length of the assembly. This CPSD is a smooth function of fissile mass and does not depend on the varying inherent source in the fuel assembly and thus is ideal for fissile mass assay.
总页数：	11p
报告类型：	科技报告