The Chornobyl Accident: Estimation of Radiation Doses Received by the Baltic and Ukrainian Cleanup Workers

2006 ◽  
Vol 166 (1) ◽  
pp. 158-167 ◽  
Author(s):  
André Bouville ◽  
Vadim V. Chumak ◽  
Peter D. Inskip ◽  
Viktor Kryuchkov ◽  
Nickolas Luckyanov

2020 ◽  
Vol 118 (1) ◽  
pp. 18-35 ◽  
Author(s):  
Vladimir Drozdovitch ◽  
Victor Kryuchkov ◽  
Elena Bakhanova ◽  
Ivan Golovanov ◽  
Dimitry Bazyka ◽  
...  


Author(s):  
V.V. Kashcheev ◽  
◽  
S.Yu. Chekin ◽  
S.V. Karpenko ◽  
M.A. Maksioutov ◽  
...  

The paper considers radiation risks of solid cancer incidence and mortality, as well as risk of leu-kemia incidence (other than chronic lymphocytic leukemia) among Russian Chernobyl cleanup workers (liquidators). The study of the cohort of liquidators carried out at the National Radiation Epidemiological Registry (NRER) was based on the follow-up data collected from 1992 over 2019. The size of the Chernobyl cleanup workers cohort exceeded 65 thousand people, their av-erage age at the time of entering the exclusion zone was 34 years, the average external gamma radiation dose received by liquidators during their cleanup work was about 0.133 Gy. Radiation-induced risks of solid cancer incidence and mortality in the study cohort were statistically signifi-cant, the risk magnitude rose with increasing the follow-up length. For the maximum follow-up period, from 1992 over 2019, the excess relative risk coefficient for solid cancer incidence was ERR/Gy=0.62, 95% CI (0.29; 0.98), and excess relative risk coefficient for solid cancer mortality was ERR/Gy=0.74, 95% CI (0.32; 1.22), the estimated coefficients were in good agreement with similar coefficients calcu-lated for the Russian liquidators with the use of ICRP radiation risk models. Non-parametric esti-mates of relative radiation risk within the same dose intervals for solid cancers and for leukemias in the cohort of liquidators were statistically significant for radiation doses above 0.150 Gy. For radiation doses below 0,150 Гр the linear non-threshold model is conservative, i.e. there was ev-idence for statistically significant radiation risk of leukemia incidence among liquidators during the first 11 years after the accident, from 1986 over 1997, ERR/Gy=4.41, 95% CI (0.24; 14.23). In later years, until 2018 there was no evidence of radiation-related risk of leukemia incidence. Out-comes of future studies will impact on optimization of radiological protection, development of reference levels for Russian general public exposure and improvement of the system for delivery of targeted medical care to people exposed to radiation.



Author(s):  
S.Yu. Chekin ◽  
◽  
V.V. Kashcheev ◽  
M.A. Maksioutov ◽  
A.N. Menyajlo ◽  
...  

One of the main tasks of the National Radiation Epidemiological Registry (NRER) is monitoring the health status of people exposed to radiation as a result of the Chernobyl accident, and provid-ing them with targeted medical care. To optimize the use of resources dedicated to mitigating health effects of the accident, it is reasonable to identify the people at the higher radiation risk, needing the priority medical care. Radiation risk is directly proportional to radiation dose the indi-viduals received, and also depends on the age, sex of the exposed persons and their baseline (in the absence of radiation) risk rates. Among all the people been registered in the NRER the Cher-nobyl cleanup workers (liquidators) received the highest radiation doses. To determine the group of higher radiation risk of solid cancer among liquidators, an estimate of the attributable radiation fraction, ARF, was used. Among the all liquidators observed in the NRER in 2020, 709 persons, 1.45%, were at the higher risk group of solid cancer, with ARF values exceeding the critical value of 15%. If the critical value of ARF drops to 10%, the group at the higher risk increases to 28% of the total number of the cohort members. The size of the group at the higher risk can be increased or reduced with the use of critical ARF values, depending on the current social and economic sit-uations. However, according to the international experience and assessment results presented in the paper, the critical ARF value may be selected within the range between 10 and 20%.



2013 ◽  
Vol 49 (13) ◽  
pp. 2926-2933 ◽  
Author(s):  
Kaja Rahu ◽  
Timo Hakulinen ◽  
Giedre Smailyte ◽  
Aivars Stengrevics ◽  
Anssi Auvinen ◽  
...  


BMJ ◽  
1996 ◽  
Vol 312 (7038) ◽  
pp. 1078-1079 ◽  
Author(s):  
W. L Bigbee ◽  
R. H Jensen ◽  
T. Veidebaum ◽  
M. Tekkel ◽  
M. Rahu ◽  
...  




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