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| Results and analysis of intercomparison in the 2019—2021 national personal dose monitoring |
| ZHAI Hezheng, WU Quan, WU Xiangjun, WANG Manyao, ZHANG Qi, ZHOU Wei, SU Kaijun, ZHOU Pengyue, ZHANG Wenyi |
| Institute of Radiation Medicine, Chinese Academy of Medical Sciences, Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Tianjin 300192 China |
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Abstract Objective To analyze the process of intercomparison of national personal dose monitoring, evaluate the ability of personal dose monitoring, and ensure the accuracy and reliability of monitoring results in our laboratory. Methods In accordance with the intercomparison protocol for 2019—2021, an energy-discriminant thermoluminescence dosimeter was used for measurement at different doses. The uncertainty of measurement was evaluated and compared with the reference value. Results Hp(10) was measured for intercomparison in 2019—2021. In 2019, the single group performance difference was -0.02 to 0.02 and the comprehensive performance was 0.02. These values were 0.02-0.10 and 0.05 in 2020, and -0.02 to 0.02 and 0.01 in 2021. The intercomparison results were rated as excellent in the three consecutive years. Conclusion The personal dose monitoring system in our laboratory was in good condition, and the monitoring results were accurate and reliable. Improving the knowledge of personnel and cultivating a serious working attitude are important for intercomparison and personal dose monitoring.
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Received: 08 October 2022
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