Prediction of the migration of radionuclides to the boundary of a shallow land burial trench
Conference
·
OSTI ID:5201166
A general model which predicts the source term, radionuclide release rate, as a function of water flow, container degradation rate, waste form leach rate, and radionuclide migration rate from a low-level waste shallow land burial treach is being developed. This paper discusses modeling radionuclide migration, one component of the source term. Simulations of radionuclide transport from a generic shallow land burial trench have been performed for a range of water flow rates, dispersivity values, and distribution coefficients. For the modeling assumptions used and the range of parameters tested, the water flow rate plays the major role in redistributing radionuclides within the trench, except in the case of extremely high dispersion. Dispersion was always found to play significant role in determining transport. This was particularly apparent upstream from the source. Sorption decreased the magnitude of the radionuclide concentration and had the apparent effect of reducing the velocity with which the radionuclides were transported. Diffusion was found to be unimportant in determining radionuclide transport. 12 refs., 8 figs., 2 tabs.
- Research Organization:
- Brookhaven National Lab., Upton, NY (USA)
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 5201166
- Report Number(s):
- BNL-NUREG-40881; CONF-880201-29; ON: DE88007402
- Country of Publication:
- United States
- Language:
- English
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·
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Related Subjects
052001 -- Nuclear Fuels-- Waste Processing
053000* -- Nuclear Fuels-- Environmental Aspects
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
510300 -- Environment
Terrestrial-- Radioactive Materials Monitoring & Transport-- (-1989)
520300 -- Environment
Aquatic-- Radioactive Materials Monitoring & Transport-- (1989)
54 ENVIRONMENTAL SCIENCES
COMPUTER CODES
DISSOLUTION
ENVIRONMENTAL TRANSPORT
F CODES
FLOW RATE
GROUND WATER
HYDROGEN COMPOUNDS
LEACHING
LOW-LEVEL RADIOACTIVE WASTES
MANAGEMENT
MASS TRANSFER
MATERIALS
MATHEMATICAL MODELS
OXYGEN COMPOUNDS
RADIOACTIVE MATERIALS
RADIOACTIVE WASTE DISPOSAL
RADIOACTIVE WASTES
RADIONUCLIDE MIGRATION
SEPARATION PROCESSES
UNDERGROUND DISPOSAL
WASTE DISPOSAL
WASTE FORMS
WASTE MANAGEMENT
WASTES
WATER
053000* -- Nuclear Fuels-- Environmental Aspects
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
510300 -- Environment
Terrestrial-- Radioactive Materials Monitoring & Transport-- (-1989)
520300 -- Environment
Aquatic-- Radioactive Materials Monitoring & Transport-- (1989)
54 ENVIRONMENTAL SCIENCES
COMPUTER CODES
DISSOLUTION
ENVIRONMENTAL TRANSPORT
F CODES
FLOW RATE
GROUND WATER
HYDROGEN COMPOUNDS
LEACHING
LOW-LEVEL RADIOACTIVE WASTES
MANAGEMENT
MASS TRANSFER
MATERIALS
MATHEMATICAL MODELS
OXYGEN COMPOUNDS
RADIOACTIVE MATERIALS
RADIOACTIVE WASTE DISPOSAL
RADIOACTIVE WASTES
RADIONUCLIDE MIGRATION
SEPARATION PROCESSES
UNDERGROUND DISPOSAL
WASTE DISPOSAL
WASTE FORMS
WASTE MANAGEMENT
WASTES
WATER