介绍了U_3Si_2-Al板型燃料元件表面铀污染量的无损检测方法和新研制的检测装置,给出了标准样的制备过程和刻度曲线。U_3Si_2-Al板型燃料元件生产检测结果表明:用α计数法检测燃料板表面铀污染量的方法可靠,采用新研制的UB-Ⅰ型表面铀污染量检测仪,直接测定燃料元件板表面铀污染量灵敏度高,可探测定量下限为5×10~(10)g/cm~2铀,测量时间短,操作简便。用微机控制的检测装置,除数据采集功能外,还具有数据统计,报警等功能。仪器可同时显示和打印,实现检测过程自动化,满足批量生产检测工作的需要。 The nondestructive testing method of uranium pollution on the surface of U_3Si_2-Al plate fuel element and the newly developed testing device are introduced. The preparation process and calibration curve of the standard sample are given. The test results of the U_3Si_2-Al plate fuel element show that the method of measuring the uranium contamination on the surface of the fuel plate by α counting method is reliable. UB-Ⅰ surface uranium pollution detector is newly developed to directly measure the uranium contamination on the surface of the fuel element plate High sensitivity, detectable quantitative lower limit of 5 × 10 ~ (10) g / cm ~ 2 uranium, the measurement time is short, easy to operate. Computer-controlled detection device, in addition to data acquisition capabilities, but also with data statistics, alarm and other functions. The instrument can display and print at the same time, realizing the automation of the testing process and meeting the need of mass production testing work.