Predicted Thermal and Stress Environments in the Vicinity of Repository Openingsby S. J. Bauer, Sandia Natl Lab, Albuquerque, United States,
M. P. Hardy, Sandia Natl Lab, Albuquerque, United States,
M. Lin, Sandia Natl Lab, Albuquerque, United States,
Abstract: An understanding of the thermal and stress environment in the vicinity of repository openings is important for preclosure performance considerations and worker health and safety considerations for the proposed high-level radioactive waste repository at Yucca Mountain. This paper presents the results of two and three dimensional numerical analyses which have determined the thermal and stress environments for typical repository openings. In general, it is predicted that openings close to heat sources attain high temperatures and experience a significant stress increase. Openings away from heat sources experience more uniform temperature changes and experience a stress change which results in part from a far-field thermal loading.
Subject Headings: Thermal loads | Radioactive wastes | Stress analysis | Occupational safety | Three-dimensional analysis | Thermal analysis | Temperature effects | Numerical analysis
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