Results 131 to 140 of about 515 (181)

Magnetic extraction of radioactive contaminations from Chernobyl NPP regions

IEEE Transactions on Magnetics, 1992
Preliminary experimental data on decontamination of the soil of a 30-km-zone around the Chernobyl nuclear power plant from radioactive contaminants by dry magnetic separation are presented. The facility used for performing the experiments is briefly described.
V.V. Pereverzev, A.N. Piskunov, V.K. Fedorov, A.N. Kheruvimov, P.A. Cheremnykh   +4 more
openaire   +1 more source

Actinides in the near release from the Chernobyl NPP accident

Journal of Radioanalytical and Nuclear Chemistry Articles, 1991
Actinide elements concentrations in the products of near release from CNPP accident were estimated. The data on uranium,237Np,241Am and plutonium and curium isotopes content in fuel particles are given. Sums of α-emitting radionuclides and plutonium isotopes in reactor graphite particles and of uranium,242Cm,239+240Pu isotopes in the soil and aerosol ...
A. S. Krivokhatsky, Yu. V. Dubasov, E. A. Smirnova, N. V. Skovorodkin, V. G. Savonenkov, B. M. Alexandrov, E. L. Lebedev   +6 more
openaire   +1 more source

Chernobyl NPP Decommissioning and “Shelter” Object Transformation: Problems of Activity Coordination

Volume 2: Mgmt. Low/Interm. Level Waste; Spent Fuel; Economics/Analyses for Waste Mgmt.; Radiological Characterization/Application Release Criteria; Panel Sessions; Solid Waste Reduction/Treatment; Current Activities in Central/Eastern Europe; Environmental Remediation Technology; LL/ILW; HLW/Spent Fuel; Chernobyl; D&D Waste; Performance Assessment; MOX and Spent UOX; D&D Nuclear Reactors; Decommissioning of Other Nuclear Facilities, 2001
Abstract The shutdown of the last Chernobyl NPP (ChNPP) unit essentially changes situation at the site. The plant terminates the activity as the electricity producer and starts decommissioning of the nuclear installations, located at the site.
Nikolay A. Steinberg, Iryna Y. Semenova
openaire   +1 more source

Characterization of hot particles in surface soil around the Chernobyl NPP

Journal of Radioanalytical and Nuclear Chemistry, 2002
Surface soil samples (0–1 cm) were collected to understand the role of hot particle (HP) in migration of radionuclide approximately 11 years after the Chernobyl accident. Three types of HPs were found by the analyses using alpha-track technique and scanning electron microscopy/energy dispersive X-ray spectrometer (SEM/EDX).
N. Yanase, H. Isobe, T. Sato, Y. Sanada, T. Matsunaga, H. Amano   +5 more
openaire   +1 more source

212Pb-Bearing Aerosols in Subreactor Rooms of the Chernobyl NPP Shelter

Radiochemistry, 2019
The results of five-year studies in Shelter subreactor rooms are summarized. At height elevations from 0 to 12 m, the mean volume activity (VA) of 212Pb-bearing aerosols is about 10 Bq m−3. The main source of 220Rn and of its daughter 212Pb is 232Th contained in the building structures. The maximal 212Pb VA is observed in the warm period of a year, and
B. I. Ogorodnikov, V. E. Khan
openaire   +1 more source

Assessment of neutron spectral characteristics of the Chernobyl NPP failed reactor

International Journal of Radiation Applications and Instrumentation. Part D. Nuclear Tracks and Radiation Measurements, 1993
Abstract Sets of threshold detectors DNESTR were applied to measure neutron field spectral characteristics in two boreholes of the failed Unit 4 of the Chernobyl NPP. The experimental data were used to calculate the differential neutron spectra. The results obtained show that the shape of the neutron energy spectra is similar to that of the reactor ...
A.V. Gromov, A.V. Kozunov, A.S. Krivokhatskiy, V.A. Nikolaev, V.I. Yurevich, V.S. Prokopenko   +5 more
openaire   +1 more source

Chemical forms of γ-emitting radionuclides in soils adjacent to the Chernobyl NPP

Science of The Total Environment, 1995
Samples of sandy forest soils, meadow sandy-peat soil and meadow sandy-loam soil were taken at different sites within a 30-km zone around the Chernobyl NPP (ChNPP). The samples were extracted with water and a 0.1-N solution of ammonium acetate. The extracts were measured for gamma-radionuclides and stable cation content. The content of all mobile forms
A L, Kliashtorin, A I, Shcheglov, F A, Tikhomirov   +2 more
openaire   +2 more sources

Conceptual and Practical Aspects of the Rehabilitation of Chernobyl NPP Exclusion Zone

9th ASME International Conference on Radioactive Waste Management and Environmental Remediation: Volumes 1, 2, and 3, 2003
The problems considered for the substantiation and implementation of a complex rehabilitation territory of the exclusion zone and the zone of absolute resettlement (EZZAR) are directed towards the recovery of its normal economic operation. This process of implementation uses a system of countermeasures. The issues of discussion are normative-legal base,
Yuri A. Ivanov, Ivan P. Los, Andrey N. Arkhipov, Nickolay I. Proskura   +3 more
openaire   +1 more source

Sedimentological study of the Chernobyl NPP site to schematise radionuclide migration conditions

Environmental Geology, 2004
The approach, methods and results of a sedimentological study of a near-surface stratum of Late Pleistocene-Holocene deposits in the near-zone (5–10 km radius) of the Chernobyl Nuclear Power Plant are presented. Sedimentological analyses are carried out at three levels of detail: regional-, local- and object-scale.
Andrei Matoshko, Dmitry Bugai, Lionel Dewiere, Alexander Skalskyy   +3 more
openaire   +1 more source

Review of Forest Models Developed after the Chernobyl NPP Accident

1999
The investigation of transfer processes and the description of radionuclide circulation in forest ecosystems by appropriate models is a difficult and challenging task. The Chernobyl accident showed the importance of understanding such fluxes in these complex ecosystems. Due to the long ecological half-lives of released radionuclides it became necessary
T. K. Riesen, R. Avila, L. Moberg, L. Hubbard   +3 more
openaire   +1 more source