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Soil Contamination with Fuel Component of Chernobyl Radioactive Fallout

Abstract

Radionuclide activity ratios in the fuel component of the Chernobyl fallout are reestimated on the basis of new experimental data, and maps of the density of contamination of the Chernobyl 30-km zone with 154Eu, 238Pu, 239+240Pu, and 241Am as of January 1, 2000 are compiled. The total radionuclide inventories in the top 30-cm horizon of the soil of the 30-km zone (minus the NPP service area, cooling pond, and radioactive waste disposal sites) on January 1, 2000 were estimated to be (Bq): 90Sr 7.7×101 4, 137Cs 2.8×101 5, 154Eu 1.4 × 101 3, 238Pu 7.2 × 101 2, 239+240Pu 1.5 × 101 3, and 241Am 1.8 × 101 3, which makes up to 0.4-0.5% of the total amount of these radionuclides produced in the 4th block of CNPP. This value is lower by a factor of 3 than that generally accepted so far. The radionuclide inventories in other objects of the 30-km zone and beyond it are also estimated. The total amounts of radionuclides fallen out with fuel particles beyond the NPP service area are reestimated. The resulting value (1.5±0.5% of the total produced in the reactor by the accident time) is lower by half as compared to the previous estimates. Two thirds of these amounts are found on the Ukrainian territory.

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Kashparov, V.A., Lundin, S.M., Zvarich, S.I. et al. Soil Contamination with Fuel Component of Chernobyl Radioactive Fallout. Radiochemistry 45, 189–200 (2003). https://doi.org/10.1023/A:1023897612740

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  • DOI: https://doi.org/10.1023/A:1023897612740

Keywords

  • Radionuclide
  • Waste Disposal
  • Radioactive Waste
  • Soil Contamination
  • Waste Disposal Site