The Use of Performance Assessments in Yucca Mountain Repository Waste Package Design Activities

by L. J. Jardine, Lawrence Livermore Natl Lab, United States,



Document Type: Proceeding Paper

Part of: High Level Radioactive Waste Management 1990

Abstract: The Yucca Mountain Project is developing performance assessment approaches as part of the evaluations of the suitability of Yucca Mountain as a repository site. Lawrence Livermore National Laboratory is developing design concepts and the scientific performance assessment methodologies and techniques used for the waste package and engineered barrier system components. This paper presents an overview of the approach under development for postclosure performance assessments that will guide the conceptual design activities and assist in the site suitability evaluations. This approach includes establishing and modeling for the long time periods required by regulations: (1) near-field environment characteristics surrounding the emplaced wastes; (2) container materials performance responses; and (3) waste form properties. All technical work is being done under a fully qualified quality assurance program as specified in 10 CFR Part 60.

Subject Headings: Radioactive wastes | Material properties | Site investigation | Conceptual design | Recycling | Waste management | Fuels | Quality control

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