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Cumulative releases of radionuclides from uncontained waste packages

Conference · · Trans. Am. Nucl. Soc.; (United States)
OSTI ID:6840576
; ; ;
The US Nuclear Regulatory Commission's performance objective for the waste package subsystem requires substantially complete containment of all radionuclides within the waste package for 300 to 1000 yr for anticipated processes and events. This requirement has been interpreted by repository projects as requiring an envelope around the waste solid that will not be penetrated for 300 to 1000 yr. To provide a technical basis for further interpretation of the containment requirement, however, mass-transfer theory can be used to predict the extent of radionuclide release from a waste solid into surrounding rock, even in the absence of a separate containment envelope. It is possible that the barrier system of waste solid, backfill, and rock can result in substantial containment within the waste solid and backfill during time periods of interest. Calculations of 1000- and 10,000-yr cumulative releases of radionuclides from a waste solid without separate containment are presented in this paper.
Research Organization:
Univ. of California, Berkeley
OSTI ID:
6840576
Report Number(s):
CONF-861102-
Conference Information:
Journal Name: Trans. Am. Nucl. Soc.; (United States) Journal Volume: 53
Country of Publication:
United States
Language:
English

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052002* -- Nuclear Fuels-- Waste Disposal & Storage
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
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54 ENVIRONMENTAL SCIENCES
CONTAINERS
DIFFUSION
ENERGY TRANSFER
ENVIRONMENTAL TRANSPORT
HEAT TRANSFER
HIGH-LEVEL RADIOACTIVE WASTES
MANAGEMENT
MASS TRANSFER
MATERIALS
NATIONAL ORGANIZATIONS
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RADIOACTIVE WASTES
RADIONUCLIDE MIGRATION
STORAGE
UNDERGROUND STORAGE
US NRC
US ORGANIZATIONS
WASTE MANAGEMENT
WASTE STORAGE
WASTES