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Migration phenomena of radionuclides into the geosphere a critical review of available information by Bror Skytte Jensen

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Published by Harwood Academic Publishers, For the Commission of the European Communities in Chur, Switzerland, New York, NY, Luxembourg .
Written in English

Subjects:

  • Radioactive pollution of water.,
  • Groundwater -- Pollution.,
  • Radioisotopes -- Migration.

Book details:

Edition Notes

Includes bibliographies.

StatementB. Skytte Jensen.
SeriesRadioactive waste management,, v. 5
ContributionsCommission of the European Communities.
Classifications
LC ClassificationsTD427.R3 J46 1982
The Physical Object
Pagination197 p. in various pagings :
Number of Pages197
ID Numbers
Open LibraryOL3483676M
ISBN 103718601206
LC Control Number82003128

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An analytical solution is derived for the problem of radionuclide migration in fissured rock, where the rock blocks are modelled as spheres. The solution differs from a previous one mainly in the inlet boundary condition. In the present paper the case of constant source strength is treated instead of a decaying step by: the study of the migration processes of elements in the geosphere through natural analogues is one of the best way to validate the calculation tools developped to predict radionuclides transfers on long time periods. it has for objective to quantify these phenomena with slow kinetics, to show the thoroughness of the mechanisms taken into. The Chernobyl experimental platform, located 2 km from the reactor where the accident occurred, allows ‘life-sized’ research into the migration of radionuclides in a saturated and unsaturated medium and the development of the laboratory’s site characterization capability (hydro-geological and radiological) and modeling capability. This report identifies a number of mechanisms that retard radionuclide migration, describes methods that are used to study such retardation phenomena and evaluates the extent to which this methods may be used to diagnose radionuclide migration through various types of geologic media. A qualitative, quantitative and applicable basis for ion exchange modelling in clay have .

Book • Edited by: This yields insights into the phenomenon and sets the frame for general RT, whose numerical aspects are also discussed. work summarises some of the results of the studies of NNAA that have contributed to the assessment of the processes of radionuclide migration through the geosphere. The ability of geochemical. Brian D. Amiro, in Encyclopedia of Physical Science and Technology (Third Edition), III.A.1 Consolidated Materials. Primordial radionuclides originate in the geosphere, and anthropogenic radionuclides are increasingly entering the geosphere because of human disposal practices. Mining and milling of uranium ore is one of the largest intrusions into consolidated rock with . prediction of rates of release of radionuclides from wastes into water, in the effects of engineered burial facilities on hydrogeological characteristics, in the migration behaviour of radionuclides through surrounding media, and in the transfer of radionuclides from groundwater to man. In order to keep the scope. As a basis for an analysis of the effect of rock heterogeneity on radionuclide migration in a single fracture, the geostatistics of the main properties governing solute transport in crystalline rock have been determined experimentally for two granitic rock types. The rock samples were collected at the Äspö Hard Rock Laboratory, Sweden and used to deduce the auto-covariance .

Geosphere performance is shown to be sensitive to how transport characteristics of deformation zones are conceptualized and incorporated into the model. Incorporation of advective groundwater travel time within backfilled tunnels reduces radiological dose from non-sorbing radionuclides such as I, while sorption in near-surface soils reduces. Migration Phenomena of Radionuclides into the Geosphere:a Critical Review of Available Information. into force on 30th September , the Organisation for Economic Co-operation and Development (OECD) Radionuclide Migration in Geologic, Heterogeneous Media – was established in Five workshops were carried out as part of the project and covered the exchange related to radionuclide migration through the geosphere. Radionuclides are sorbed and fixed on/to minerals during migration in geosphere. This review provides the information on the sorption characteristics of cesium, strontium, cobalt and neptunium on minerals and the redistribution of cesium, strontium, cobalt, uranium and neptunium during alteration of primary minerals to secondary ones.