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目的通过2011年全国放射工作人员个人剂量监测系统比对活动,检验本实验室个人剂量监测能力。方法按照《全国放射工作人员个人剂量监测系统比对方案》的要求,将多组常规监测用的个人剂量计交组织者,经标准照射源照射后,由实验室测量并统计各组测量值,再对其进行不确定度统计和报告。结果 2011年盲样比对各组Hp(10)均值的剂量范围为0.30 mSv～4.16 mSv,各组Hp(10)变异系数为2.16%～5.00%,约定真值的剂量范围为0.30 mSv～4.20 mSv,单组性能Pi为-0.95%～12.50%,综合性能|B|+S为10.4%,均远小于0.4的判定水平,比对结果优秀。结论本实验室个人剂量监测系统测量结果准确、可靠,符合国家有关标准的要求。
Objective To compare the personal radiation dose monitoring system of radiological workers nationwide in 2011 and test the personal dose monitoring ability in our laboratory. Methods According to the requirements of “National Radiation Workers Personal Dose Monitoring System Comparison Program”, a number of routine dosimeters for routine monitoring were handed over to the organizer. After being irradiated by standard irradiation sources, the measured values of each group were measured by the laboratory. Then the uncertainty of the statistics and reports. Results The dose-average range of Hp (10) in each group was 0.30 mSv ~ 4.16 mSv in 2011, and the coefficient of variation of Hp (10) in each group was 2.16% -5.00%. The agreed true value ranged from 0.30 mSv to 4.20 mSv, the single-group performance Pi was -0.95% ~ 12.50%, the comprehensive performance | B | + S was 10.4%, all far less than the level of 0.4, the result of the comparison was excellent. Conclusion The measurement results of personal dose monitoring system in our laboratory are accurate and reliable and meet the requirements of relevant national standards.