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Assessment of current exposure of the population living in the Techa River basin from radioactive releases of the Mayak facility

Balonov, Mikhail I.; Bruk, Gennady Y.; Golikov, Vladislav Y.; Barkovsky, Anatoly N.; Kravtsova, Eleonora M.; Kravtosova, Olga S.; Mubasarov, Akhat A.; Shutov, Vladimir N.; Travnikova, Irena G.; Howard, Brenda J.; Brown, Justin Emrys; Strand, Per. 2007 Assessment of current exposure of the population living in the Techa River basin from radioactive releases of the Mayak facility. Health Physics, 92 (2). 134-147.

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Abstract/Summary

Current doses arising from external and internal pathways have been estimated for the residents of two villages, Muslumovo and Brodokalmak, alongside the Techa River, which was contaminated by radioactive releases from the Mayak production facility. The dose estimates are based on numerous environmental measurements supplemented by further human whole body measurements and studies on occupational and dietary habits of Slavic and Turkish ethnic groups. Estimated doses arise mainly from use of the contaminated floodplains alongside the Techa River. The current average annual effective dose attributable to Cs-137 and Sr-90 in the environment, under conditions where restrictions on some river-related activities are in place, may exceed the Russian national action level of 1 mSv only in the hypothetical critical group of herdsmen in Muslumovo. The dose to this critical group in Brodokalmak is assessed to be 3 times less than that in Muslumovo and 2 fold below the action level. The external and internal exposures give comparable contributions to the total dose in both settlements and population groups: 47% and 53% in Muslumovo and 40% and 60% in Brodokalmak, respectively. About one quarter to one half of the internal dose in adults arises from the intake of Sr-90. In order to avoid substantial increases in the dose received by Muslumovo residents, it is expedient to prolong the current policy of restriction of some river-related population activities in this village.

Item Type: Publication - Article
Programmes: CEH Programmes pre-2009 publications > Biogeochemistry > SE01B Sustainable Monitoring, Risk Assessment and Management of Chemicals
CEH Sections: Shore
ISSN: 0017-9078
Additional Keywords: dose, external, dose, internal, (CS)-C-137, Sr-90 radioecology
NORA Subject Terms: Ecology and Environment
Date made live: 23 Jan 2008 14:38
URI: http://nora.nerc.ac.uk/id/eprint/2142

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