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| The Evaluation of Radiation level and Dose of Workers in Guangzhou Metro Line 1 |
| ZHANG Lin1, HU Can-yun2, MENG Xiaolian3, et al |
| Guangzhou Center for Disease Control and Prevention 510080 China |
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Abstract Objective To find out the level of radiation and effective dose of workers in Guangzhou Metro line 1.Methods In metro stations, external Gamma-ray exposure rates were obtained by FD-71A radiance measurer, 222Rn and 220Rn concentrations were obtained by using Rn-Tn solid state nuclear track detectors developed by The National Institute for Radiological Protection and Nuclear Safety, Chinese Centre for Disease Control.The annual Effective dose from Gamma、222Rn and 220Rn were calculated.Results The external Gamma-ray exposure average rate is 17.74×10-8 Gy/h, The average concentration of 222Rn is 59.8 Bq/m3, The average concentration of 220Rn is 32.1 Bq/m3.The total annual effective dose from Gamma、222Rn and 220Rn is 2.878mSv/a.Conclusion In the stations of Guangzhou in metro line 1, no more effective radiation dose to the workers has measured.
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Received: 31 October 2005
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ZHENG Senxing, ZHANG Yan, HUANG Lihua, ZHENG Qishan, LIU Pan, GUO Huozhong, ZOU Tianlu, YAN Jianming. Investigation and analysis of the application frequency of medical X-CT and the dose in Fujian Province in 2016[J]. , 2018, 27(6): 543-546,561. |
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