Up-to-date concentrations of long-lived artificial radionuclides in the Tom and Ob rivers in the area influenced by discharges from Siberian chemical combine

Up-to-date concentrations of long-lived artificial radionuclides in the Tom and Ob rivers in the area influenced by discharges from Siberian chemical combine

The Siberian Chemical Combine (SCC) is located in Seversk (formerly known as Tomsk-7) in the Tomsk Region of the Russian Federation. The main contribution of radionuclides in the SCC process water discharged into the Tom River was from the single-pass reactors, now removed from service (the last SCC...

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Bibliographic Details
Published in:Journal of environmental radioactivity Vol. 108; pp. 15 - 23
Main Authors: Nikitin, A.I., Kryshev, I.I., Bashkirov, N.I., Valetova, N.K., Dunaev, G.E., Kabanov, A.I., Katrich, I.Yu, Krutovsky, A.O., Nikitin, V.A., Petrenko, G.I., Polukhina, A.M., Selivanova, G.V., Shkuro, V.N.
Format: Journal Article
Language:English
Published: England Elsevier Ltd 01-06-2012
Subjects:
137Cs
239,240Pu
90Sr
Bottom sediments
Contamination
Density
Flood-plain soil
Geologic Sediments - analysis
Liquids
Ob river
Radiation Monitoring
Radioisotopes - analysis
Reactors
River water
Rivers
Rivers - chemistry
Russia
Shutdowns
Siberian chemical combine
Soil - analysis
Soil contamination
Soils
Tom river
Water Pollutants, Radioactive - analysis
Russia, Siberia
Russia, Krasnoyarskiy, Ob R
Flood-plain soil
239,240Pu
Siberian chemical combine
3H
Bottom sediments
90Sr
Ob river
River water
Tom river
137Cs
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Summary:The Siberian Chemical Combine (SCC) is located in Seversk (formerly known as Tomsk-7) in the Tomsk Region of the Russian Federation. The main contribution of radionuclides in the SCC process water discharged into the Tom River was from the single-pass reactors, now removed from service (the last SCC reactor was shutdown on June 5, 2008). The data on the concentrations of 90Sr, 137Cs, 239,240Pu and other artificial radionuclides in water, bottom sediments and flood-plain soils of the Tom and Ob rivers from Tomsk to the confluence of the rivers, are presented and discussed. The results of measurements carried out after shutdown of the last SCC single-pass reactor indicated no radiologically significant consequences of SCC activities for the studied water environment compartments. Contemporary activity concentrations of long-lived artificial radionuclides 3H, 90Sr, 137Cs and 239,240Pu in river water were below the intervention levels established by current regulations of the Russian Federation for these radionuclides. The results of 3H analysis in water from the Tom and Samuska rivers demonstrated no inflow of contaminated formation water to surface water from the sites where liquid radioactive wastes of the SCC were injected below the surface. However, the density of flood-plain soil contamination by long-lived 137Cs in the area influenced by SCC liquid discharges was higher than regional technogenic background. There were local flood-plain areas contaminated not only by 137Cs, but also other gamma-emitters, such as 60Co and 152Eu.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0265-931X
1879-1700
DOI:10.1016/j.jenvrad.2011.11.013