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| Analysis of individual dose level of Songjiang radiation workers exposed to external radiation from 2017 to 2018 |
| ZHANG Luqian, WANG Yanmei, JIANG Song, WANG Guimin, JIANG Yuanqiang |
| Shanghai Songjiang District Center for Control and Prevention, Shanghai 201620 China |
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Abstract Objective In order to further provide guidance on occupational safety and protection for radiation workers, we collected the individual dose levels of radiation workers in Songjiang District and evaluated the protection status of radiation workers.Methods Analyzing and evaluating the results of dose monitoring of radiation workers by pyroelectric dosimetry systems according to the Specifications for individual monitoring of occupational external exposure (GBZ 128—2016).Results A total of 620 people were monitored in Songjiang District in 2017—2018, with a per capita annual dose equivalent of 0.448 mSv·a-1 and a two-year collective dose equivalent of 277.514 people·mSv, with per capita annual dose equivalent of 0.259～1.276 mSv·a-1 for radiological staff in different occupational categories. Annual dose equivalent per capita in nuclear medicine is higher than in the other four categories (P < 0.05) and in interventional radiology than in diagnostic radiology, diagnostic dentistry and radiotherapy (P < 0.05).Conclusion The personal dose level of radiation workers in Songjiang District is far below the national limit of 20 mSv·a−1, which means the working environment is relatively safe, however, it is still necessary to raise the awareness of radiation workers to strengthen their own protection.
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Received: 29 April 2020
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