Record Display for the EPA National Library Catalog


Main Title A basic technique and models for determining exposure rates over uranium-bearing soils /
Author Oksza-Chocimoski, George V. ; Oksza-Chocimowski, George V.
CORP Author Office of Radiation Programs-Las Vegas Facility, NV.
Publisher U.S. Environmental Protection Agency, Office of Radiation Programs-Las Vegas Facility ; Distributed by the National Technical Information Service,
Year Published 1982
Report Number EPA-520/6-82-014
Stock Number PB83-147892
OCLC Number 37498822
Subjects Radioactivity--Measurement ; Uranium ores ; Uranium mill tailings ; Gamma rays--Measurement
Additional Subjects Soils ; Radioactivity ; Tailings ; Mathematical models ; Radiation hazards ; Radon ; Gamma rays ; Diffusion ; Coverings ; Mill tailings ; Uranium mills ; Radioactive waste disposal ; Computer applications ; Uranium 238 ; Radiation doses
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD  EPA 520-6-82-014 Headquarters Library/Washington,DC 08/25/2014
ELBD ARCHIVE EPA 520-6-82-014 Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
ELBD  EPA 520-6-82-014 AWBERC Library/Cincinnati,OH 02/28/1998
ERAD  EPA 520/6-82-014 Region 9 Library/San Francisco,CA 07/16/2012
NTIS  PB83-147892 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation ix, 147 p. : ill. ; 28 cm.
The application of simple computer-implemented analytical procedures to predict exposure rates over uranium-bearing soil deposits is demonstrated in this report. The method is based, conceptually, on the energy-dependent point-source buildup factor and, operationally, on two consecutive integrations. The dependence of photon fluxes on spatial variables is simplified by an analytical integration over the physical dimensions of the deposit, represented as a slab bearing homogeneously distributed nuclides of the uranium-238 decay chain, at equilibrium, and covered with a source-free overburden slab; both slabs being of variable thickness but of infinite areal extent. The resultant analytical expression describes flux as function of energy-dependent parameters, thickness of the source slab, and depth of overburden, and is equated analytically to exposure rates bearing the same dependence. Elementary computer techniques are then employed to integrate numerically the exposure rates corresponding to the specific energies of uranium-238 decay chain, for chosen thicknesses of the overburden and uranium-bearing slabs.
"EPA-520/6-82-014." "August 1982." Includes bibliographical references.