Alternative approaches to assessing the performance and suitability of Yucca Mountain for spent fuel disposal. Final report
- Risk Engineering, Inc., Boulder, CO (United States)
- QuantiSci Ltd., Denver, CO (United States)
- Aleksandria Sciences, Sheffield (United Kingdom); and others
Significant resources and effort have been expended by EPRI over the past few years in modeling and understanding issues related to high-level radioactive waste disposal. Previous reports have documented the general model used in the EPRI work and specific inputs to that model for examination of the potential repository at Yucca Mountain, Nevada. Modeling of the potential Yucca Mountain site is an on-going process, and new data are being collected with which to evaluate and modify models of physical processes. This report is divided into two parts. The first part presents results from specific calculational cases of repository performance, updated for the most recent data and conceptual models. The second part discusses possible alternatives for the components of the assessment context for a repository at Yucca Mountain. Part 2 also presents additional information on time frames and a interaction matrix method of documenting TSPA model interactions. The main purposes of Part of this report is to describe the subsystem and total system performance models and present results and analysis of the results. Part 1 includes presentation of new models of waste container failure that accounts for new container material, a new model of the effect of hydrothermal activity and heterogeneous groundwater flow in the unsaturated zone on temperatures and the distribution of groundwater capable of dripping into the repository drifts. Part 1 also: identifies the key technical components of the candidate spent fuel and HLW disposal facility at Yucca Mountain using IMARC Phase 4; makes recommendations regarding the prioritization of the technical development work remaining; and provides an assessment of the overall technical suitability of the candidate HLW disposal facility at Yucca Mountain.
- Research Organization:
- Electric Power Research Inst. (EPRI), Palo Alto, CA (United States); Risk Engineering, Inc., Boulder, CO (United States); QuantiSci, Inc., Denver, CO (United States); Aleksandria Sciences, Sheffield (United Kingdom)
- Sponsoring Organization:
- Electric Power Research Inst., Palo Alto, CA (United States)
- OSTI ID:
- 362347
- Report Number(s):
- EPRI-TR-108732; TRN: AHC29926%%1
- Resource Relation:
- Other Information: PBD: Nov 1998
- Country of Publication:
- United States
- Language:
- English
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