An automated sensitivity analysis procedure for the performance assessment of nuclear waste isolation systems

Journal Article · Wed Jan 01 04:00:00 EST 1986 · Nucl. Chem. Waste Manage.; (United States)

DOI:https://doi.org/10.1016/0191-815X(86)90010-0· OSTI ID:6984655

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

To support an effort in making large-scale sensitivity analyses feasible, cost efficient and quantitatively complete, the authors have developed an automated procedure making use of computer calculus. The procedure, called GRESS (GRadient Enhanced Software System), is embodied in a precompiler that can process Fortran computer codes and add derivative-taking capabilities to the normal calculation scheme. In this paper, the automated GRESS procedure is described and applied to the code UCB-NE-10.2, which simulates the migration through a sorption medium of the radionuclide members of a decay chain. The sensitivity calculations for a sample problem are verified using comparison with analytical and perturbation analysis results. Conclusions are drawn relative to the applicability of GRESS for more general large-scale sensitivity studies, and the role of such techniques in an overall sensitivity and uncertainty analysis program is discussed.

• Research Organization: Oak Ridge National Lab., Oak Ridge, TN 37831
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6984655
• Journal Information: Nucl. Chem. Waste Manage.; (United States), Journal Name: Nucl. Chem. Waste Manage.; (United States) Vol. 6:3/4; ISSN NCWMD
• Country of Publication: United States
• Language: English

Related Subjects

052002* -- Nuclear Fuels-- Waste Disposal & Storage
053000 -- Nuclear Fuels-- Environmental Aspects
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
COMPUTER CALCULATIONS
COMPUTER CODES
COMPUTERIZED SIMULATION
DATA COVARIANCES
DECAY
ENVIRONMENTAL TRANSPORT
FORTRAN
HIGH-LEVEL RADIOACTIVE WASTES
LICENSING
MANAGEMENT
MASS TRANSFER
MATERIALS
NUCLEAR FACILITIES
PERFORMANCE
PERTURBATION THEORY
PROGRAMMING LANGUAGES
RADIOACTIVE MATERIALS
RADIOACTIVE WASTE DISPOSAL
RADIOACTIVE WASTE FACILITIES
RADIOACTIVE WASTES
RADIONUCLIDE MIGRATION
RISK ASSESSMENT
SENSITIVITY ANALYSIS
SIMULATION
SITE CHARACTERIZATION
SORPTION
U CODES
UNDERGROUND DISPOSAL
WASTE DISPOSAL
WASTE MANAGEMENT
WASTES