The “Hot Particles” Data Base

During 1987–1996, more than 1,800 Chernobyl hot particles were selected by scanning thin soil layers with a dosimeter. Size and radionuclides activity in hot particles were measurement. The “Hot particles” database (in Microsoft Access) was created by integrating this information and complemented with data on hot particles sampled in 1986 in Poland and inside of the “Shelter”. This database is widely used in ex-USSR and other countries, and it is available for interested professionals. This database contains the supplemental information related to Chernobyl nuclear fuel: specific activity of radionuclides, activity and radionuclide ratios in the different stage after accident and for the different depth of depletion of nuclear fuel. As well as a photo-gallery of FP were generated with an electron microscope is accessible. The results of works in the near zone of ChNPP accident are compiled on the CD “Radioactive contamination of the 30-km zone” and the Database “Hot Particles” released by UIAR. Obtained regularities of the fuel particles behavior in the Environment create the basis for prognosis of the radiological situation in the ChNPP Exclusion zone.