Automated procedure for calculating time-dependent sensitivities in ORIGEN2
ORIGEN2 is a widely used point-depletion and radioactive-decay computer code for use in simulating nuclear fuel cycles and/or spent fuel characteristics. This paper presents the application of the GRESS procedure to the ORIGEN2 code for performing a sensitivity analysis of a high-level waste disposal problem. The GRESS procedure uses computer calculus and the GRESS precompiler to automate the generation and calculation of gradients in a computer code. The GRESS version of ORIGEN2 is used to calculate the nuclide-dependent sensitivities of the decay heat and radioactivity of 1008 nuclides comprising reprocessed high-level waste to changes in data and input parameters. The sensitivities are calculated in a single execution of the revised code as compared to the conventional method of rerunning the code numerous times. The availability of sensitivity data as an option in ORIGEN2 reveals relationships not easily recognized even with reruns.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 6225779
- Report Number(s):
- ORNL/TM-9771; ON: DE86002554
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
052002* -- Nuclear Fuels-- Waste Disposal & Storage
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
AFTER-HEAT
COMPUTER CALCULATIONS
COMPUTER CODES
HIGH-LEVEL RADIOACTIVE WASTES
MANAGEMENT
MATERIALS
O CODES
RADIOACTIVE MATERIALS
RADIOACTIVE WASTE DISPOSAL
RADIOACTIVE WASTES
RADIOACTIVITY
SENSITIVITY ANALYSIS
WASTE DISPOSAL
WASTE MANAGEMENT
WASTES
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
AFTER-HEAT
COMPUTER CALCULATIONS
COMPUTER CODES
HIGH-LEVEL RADIOACTIVE WASTES
MANAGEMENT
MATERIALS
O CODES
RADIOACTIVE MATERIALS
RADIOACTIVE WASTE DISPOSAL
RADIOACTIVE WASTES
RADIOACTIVITY
SENSITIVITY ANALYSIS
WASTE DISPOSAL
WASTE MANAGEMENT
WASTES