Territory contamination with the radionuclides representing the fuel component of Chernobyl fallout

The data obtained through a series of experiments were used to specify the correlation of activities of the fuel component radionuclides of Chernobyl fallout and to create the maps of the 30-km Chernobyl zone terrestrial density of contamination with 154Eu, 238Pu, 239+240Pu and 241Am (on 01.01.2000)...

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Bibliographic Details
Published in:	The Science of the total environment Vol. 317; no. 1; pp. 105 - 119
Main Authors:	Kashparov, V.A, Lundin, S.M, Zvarych, S.I, Yoshchenko, V.I, Levchuk, S.E, Khomutinin, Y.V, Maloshtan, I.M, Protsak, V.P
Format:	Journal Article
Language:	English
Published:	Shannon Elsevier B.V 30-12-2003 Elsevier Science
Subjects:	Applied sciences Chernobyl accident Earth sciences Earth, ocean, space Engineering and environment geology. Geothermics Environmental Monitoring Exact sciences and technology Fuel particles Plutonium Pollution Pollution sources. Measurement results Pollution, environment geology Power Plants Radioactive fallout Radioactive Fallout - analysis Radioactive Hazard Release Radioactive Pollutants - analysis Radioisotopes - analysis Soil and sediments pollution Terrestrial density of contamination Ukraine Eastern Europe Europe Ukraine Ukraine, Chernobyl Terrestrial density of contamination Plutonium Fuel particles Radioactive fallout Chernobyl accident Radioactive pollution Atmospheric fallout Fuel element Radioisotope Soil pollution Radioactivity measurement Spatial distribution Nuclear power plant Fission reactor accidents Air pollution Inventory Concentration distribution
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Summary:	The data obtained through a series of experiments were used to specify the correlation of activities of the fuel component radionuclides of Chernobyl fallout and to create the maps of the 30-km Chernobyl zone terrestrial density of contamination with 154Eu, 238Pu, 239+240Pu and 241Am (on 01.01.2000). In the year 2000, total inventories of the fuel component radionuclides in the upper 30-cm soil layer of the 30-km Chernobyl zone in Ukraine (outside the ChNPP industrial site, excluding the activity located in the radioactive waste storages and in the cooling pond) were estimated as: 90Sr—7.7×10 14 Bq; 137Cs—2.8×10 15 Bq; 154Eu—1.4×10 13 Bq; 238Pu—7.2×10 12 Bq; 239+240Pu—1.5×10 13 Bq; 241Am—1.8×10 13 Bq. These values correspond to 0.4–0.5% of their amounts in the ChNPP unit 4 at the moment of the accident. The current estimate is 3 times lower than the previous widely-cited estimates. Inventories of the fuel component radionuclides were also estimated in other objects within the 30-km zone and outside it. This allowed more accurate data to be obtained on the magnitude of a relative release of radionuclides in the fuel particles (FP) matrix during the Chernobyl accident outside the ChNPP industrial site. It amounts to 1.5±0.5% of these radionuclides in the reactor, which is 2 times lower than the previous estimates. Two-thirds of the radionuclides release in the FP was deposited on the territory of Ukraine.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0048-9697 1879-1026
DOI:	10.1016/S0048-9697(03)00336-X