External Radiation Doses from Occupational Exposure

Nature ◽  
1969 ◽  
Vol 221 (5183) ◽  
pp. 831-833 ◽  
Author(s):  
M. J. DUGGAN ◽  
E. GREENSLADE ◽  
B. E. JONES
2019 ◽  
Vol 184 (3-4) ◽  
pp. 514-517 ◽  
Author(s):  
T Tsujiguchi ◽  
Y Shiroma ◽  
T Suzuki ◽  
Y Tamakuma ◽  
M Yamaguchi ◽  
...  

Abstract Namie Town in Fukushima Prefecture, the majority of which was an evacuation area as a result of the effects of the Fukushima Daiichi Nuclear Power Plant accident, carried out a ‘temporal stay’ in September 2016 so that residents could check their houses. Therefore, in cooperation with the town authorities, the authors distributed personal dosemeters and behaviour record forms to record the personal dose equivalent rate and investigate the relationship between residents’ external radiation dose and their behaviour. When the personal dose equivalent rate was calculated from the measured personal dose equivalent per hour, the median was 0.12 μSv h−1, the maximum value and the minimum value were 0.58 and 0.06 μSv h−1, respectively. Meanwhile, since personal fluctuations were observed in personal dose equivalent, grasping the relationship between residents’ behaviour and exposed dose can be applied to risk communication.


Author(s):  
V.V. Petushkova ◽  
◽  
I.I. Pelevina ◽  
A.M. Serebryanyi ◽  
I.N. Kogarko ◽  
...  

The article presents results of study of delayed effects of occupational exposure to alpha and gamma radiation on human genome. The group of 23 former Mayak employees at the city of Ozersk was involved in the study. During their work at the enterprise for plutonium processing they had been exposed to internal and external radiation. Average internal alpha radiation dose to lungs was 0.120.024 Gy, to the bone marrow – 0.0450.0087 Gy. Average individualized ex-ternal gamma radiation doses to the bone marrow and to the lungs were 1.60.1Gy, 1.80.12 Gy, respectively. Impacts of ionizing radiation and alpha particles on frequency of micronuclear cells and the components of adaptive response were assessed. Adaptive potential of lymphocytes cor-relates with doses in internal and external radiation. Results of the analysis indicate that sponta-neous DNA damage to the lymphocytes genome is related to the level of internal rather than ex-ternal damage to irradiation, of human lungs (r=0.51; p=0.015) and the bone marrow (r=0.47; p=0.026), it depends also on the duration of wok with alpha and gamma emitters (r=0.43; p=0.046). Results of the study may be useful for estimating risk of delayed effects on health sta-tus of workers dealing with radionuclides processing.


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