Performance assessment calculational exercises (PACE-90): Overview and summary

Conference · Mon Dec 30 23:00:00 EST 1991

OSTI ID:145628

Barnard, R W; Dockery, H A ^[1]

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1. Sandia National Labs., Albuquerque, NM (United States)

PACE-90 was undertaken by the Yucca Mountain Site Characterization Project in order to develop expertise in computational capabilities and to aid in identification of critical elements and processes necessary for performance assessment. One- and two-dimensional codes simulated groundwater flow and transport of selected radionuclides through Yucca Mountain for a period of 100,000 years. Using an groundwater percolation flux of 0.01 mm/yr and a new interpretation of the hydrostratigraphy, the calculations showed no contamination reaching the water table. However, these results should be interpreted with caution because the calculations were based on unvalidated conceptual models and parameters. In a separate part of the exercise, disturbed-condition problems (human intrusion, climate change, and volcanism) were developed as a basis for future calculations.

• Research Organization: American Nuclear Society, La Grange Park, IL (United States); American Society of Civil Engineers, New York, NY (United States)
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 145628
• Report Number(s): CONF-910435--Vol.2
• Country of Publication: United States
• Language: English

Related Subjects

05 NUCLEAR FUELS
54 ENVIRONMENTAL SCIENCES
99 GENERAL AND MISCELLANEOUS
COMPUTERIZED SIMULATION
GROUND WATER
ONE-DIMENSIONAL CALCULATIONS
PHYSICAL PROTECTION
RADIOACTIVE WASTE DISPOSAL
RADIOACTIVE WASTE FACILITIES
RADIONUCLIDE MIGRATION
SITE CHARACTERIZATION
SYSTEMS ANALYSIS
TWO-DIMENSIONAL CALCULATIONS
YUCCA MOUNTAIN
Yucca Mountain Project