Automated sensitivity analysis of the radionuclide migration code UCBNE10. 2

Conference · Tue Jan 01 04:00:00 EST 1985

OSTI ID:5331988

Pin, F G; Worley, B A; Oblow, E M; Wright, R Q; Harper, W V

The Salt Repository Project (SRP) of the US Department of Energy is performing ongoing performance assessment analyses for the eventual licensing of an underground high-level nuclear waste repository in salt. As part of these studies, sensitivity and uncertainty analysis play a major role in the identification of important parameters, and in the identification of specific data needs for site characterization. Oak Ridge National Laboratory has supported the SRP in this effort resulting in the development of an automated procedure for performing large-scale sensitivity analysis using computer calculus. GRESS, Gradient Enhanced Software System, is a pre-compiler that can process FORTRAN computer codes and add derivative taking capabilities to the normal calculated results. The GRESS code is described and applied to the code UCB-NE-10.2 which simulates the migration through an adsorptive medium of the radionuclide members of a decay chain. Conclusions are drawn relative to the applicability of GRESS for more general large-scale modeling sensitivity studies, and the role of such techniques in the overall SRP sensitivity/uncertainty program is detailed. 6 refs., 2 figs., 3 tabs.

• Research Organization: Oak Ridge National Lab., TN (USA); Battelle Memorial Inst., Columbus, OH (USA). Office of Nuclear Waste Isolation
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 5331988
• Report Number(s): CONF-850918-6; ON: DE85017080
• Country of Publication: United States
• Language: English

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053000 -- Nuclear Fuels-- Environmental Aspects
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
510301 -- Environment
Terrestrial-- Radioactive Materials Monitoring & Transport-- Soil-- (-1987)
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Aquatic-- Radioactive Materials Monitoring & Transport-- Water-- (1987)
54 ENVIRONMENTAL SCIENCES
COMPUTER CODES
COMPUTERIZED SIMULATION
ENVIRONMENTAL TRANSPORT
FORTRAN
GEOLOGIC DEPOSITS
GROUND WATER
HIGH-LEVEL RADIOACTIVE WASTES
HYDROGEN COMPOUNDS
LICENSING
MANAGEMENT
MASS TRANSFER
MATERIALS
NUCLEAR FACILITIES
OXYGEN COMPOUNDS
PROGRAMMING LANGUAGES
RADIOACTIVE MATERIALS
RADIOACTIVE WASTE DISPOSAL
RADIOACTIVE WASTE FACILITIES
RADIOACTIVE WASTES
RADIONUCLIDE MIGRATION
SALT DEPOSITS
SENSITIVITY ANALYSIS
SIMULATION
WASTE DISPOSAL
WASTE MANAGEMENT
WASTES
WATER