全国环保系统环境γ辐射剂量率测量比对

Environmental γ radiation dose rate intercomparison of the radiation environmental monitoring system in China

全国环保系统于2002年在四川进行了γ辐射剂量率测量比对,比对结果表明,以高压电离室的测量结果平均值作为参考值,国产的BH型仪器测量数量大多偏低.国产JW型仪器测量数据大多偏高,手枪型小闪烁体剂量率仪测量结果的相对标准差较大。通过这次比对,基本摸清了全国γ剂量率测量仪的性能状况,为今后开展测量比对积累了经验。

γ radiation dose rate intercomparison was implemented by the radiation environmental monitoring & protection stations of the SEPA in Sichuan, 2002. The result of intercomparison showed that if the average value measured by high-voltage ionization chamber was the reference value, most data measured by BH type meters, which made in China, was lower than the reference value on the contrary, that measured by JW type meters made in China was higher. However ,for pistol scintillation dose rate meter, the standard deviation value was relatively great. The conditions of measuring instruments that are used for measuring dose rate in China was known ultimately by this intercomparison , and experience of this intercomparison is good for works in the future.