大面积地板α、β放射性污染监测仪主要性能测试

Main Performance Test of Large Area Floor α and β Radioactive Contamination Monitor

介绍了对自主研制的使用塑料闪烁探测器的大面积地板放射性污染监测仪的主要性能测试结果.测试主要内容包括表面发射率响应、变异系数、最低可探测下限等物理实验和环境可靠性试验、电磁兼容性试验等型式试验.结果表明:仪器的α、β表面发射率响应均大于30%;各监测道变异系数均小于10%;最低可探测下限满足放射性表面污染控制水平的测量要求等.各项参数指标满足相关标准要求,能有效对涉核场所地面、路面及场地的α、β射线进行快速测量.

The main performance test results of a self-developed large area floor contamination monitor using plastic scintillation detector are introduced.The main performance tests were carried out on the self-developed large area floor contamination monitor using plastic scintillation detector,including the physical experiments such as surface emission rate response,coefficient of variation,minimum detectable limit,etc.The type tests include environmental reliability test and electromagnetic compatibility test.The results show that theαandβsurface emission rate response are greater than 30%,the coefficient of variation of each monitoring channel is less than 10%,and the minimum detectable limit can meet the measurement requirements of radioactive surface contamination control level in the workplace.The characters meet the standard requirements,and instrument can effectively and quickly measure theαandβradiation on the ground,pavement and site.