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Lakes Contamination after Chernobyl Accident

#0577


Radioecological Consequences of Contamination of the Lakes after the Chernobyl Accident and Analysis of Rehabilitation Measures.

Tech Area / Field

  • ENV-WPC/Water Pollution and Control/Environment

Status
3 Approved without Funding

Registration date
12.02.1996

Leading Institute
Scientific & Production Association “Typhoon”, Russia, Kaluga reg., Obninsk

Supporting institutes

  • NIIIT (Pulse Techniques), Russia, Moscow\nKurchatov Research Center, Russia, Moscow

Collaborators

  • Finnish Center for Radiation and Nuclear Safety / Research Department, Finland, Helsinki

Project summary

The aim of the Project is to assess and predict radioecological consequences of contamination of lakes in the regions of Russia impacted by the Chernobyl accident, and to analyze possible measures for rehabilitation of the contaminated lakes and reduction of radiation risks from the water utilization.

The regions contaminated by Chernobyl radioactive depositions are unique experimental sites for investigating the behavior of radionuclides in aquatic ecosystems. These regions have enough lakes with different hydrological, morphometric and physical-chemical properties, which makes it possible to carry out investigations in a wide range of ecological situations. Particular attention is to be given to comprehensive radioecological investigations of Lake Kozhanovskoe. This is associated with high levels of contamination of the lake catchment area (up to 2000 kBq/m2 for Cs-137), slow reduction in the radioactive contamination of the lake water arid fish, and economic importance of the lake.

The main expected results are the following: a database on radioactive contamination of the lakes and parameters of the radionuclide migration in aquatic ecosystems; predictions of radioactive contamination of the lake ecosystems based on verified radioecological models; assessments of doses and radiation risks from the water utilization to different population groups; generalized data of a comparative analysis of various methods for

rehabilitating the contaminated lakes; scientific and practical recommendations for radioecological monitoring of the contaminated lakes and analysis of measures for their rehabilitation.

Thus, the implementation of the Project will result in setting up a system of integrated radioecological monitoring of the lakes designed to assess and predict radioecological consequences of the contamination and to rehabilitate the contaminated water bodies. The system developed will allow adaptation to other water bodies in Russia contaminated with radionuclides. The results of investigations under the Project can also be used in analyzing the radioecological state of lakes in Finland, Sweden, Norway, Germany, UK, Ukraine, Belarus arid other countries impacted by the Chernobyl accident.

A potential role of foreign collaborators consists in generalizing the results of experimental investigations, solving the problems related to modeling of the radionuclide transport in the lake ecosystems, and assessing the radionuclide transport parameters.


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