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通过测量后处理设施环境样品中的235U/238U、236U/238U可能判断乏燃料的燃耗。MC-ICP-MS能精确测定235U/238U、236U/238U,本实验室开展了利用MC-ICP-MS测量后处理厂环境样品中235U/238U、236U/238U及估算辐照燃料燃耗的探索研究工作。根据环境样品235U/238U、236U/238U估算燃耗的计算式(1)、(2),用Fortran语言编制了求解燃耗(Bu)的程序。为了验证燃耗计算程序的可行性,根据文献中的数据,计算了Bu并与文献值进行了比较,偏差在2%左右,表明计算程序可行。
It is possible to determine spent fuel burnout by measuring 235U / 238U, 236U / 238U in environmental samples from aftertreatment facilities. MC-ICP-MS can accurately measure 235U / 238U, 236U / 238U, the laboratory carried out the use of MC-ICP-MS measurement of post-processing plant 235U / 238U, 236U / 238U and to explore the fuel consumption of irradiated fuel exploration research work. According to the formula (1) and (2) for estimating fuel consumption of 235U / 238U and 236U / 238U for environmental samples, a program for solving fuel consumption (Bu) was compiled in Fortran language. In order to verify the feasibility of the burnup calculation program, Bu was calculated and compared with the literature values according to the data in the literature with a deviation of about 2%, indicating that the calculation procedure is feasible.