Technical Update Impact Letter Report
In May 2001, the U.S. Department of Energy (DOE) released the Yucca Mountain Science and Engineering Report (DOE 2001a), which provided a technical summary of the latest scientific and engineering information about the potential repository at Yucca Mountain, to support public comment on the Secretary's consideration of the Yucca Mountain site for recommendation as a geologic repository. A second report, the Yucca Mountain Preliminary Site Suitability Evaluation (DOE 2001b), was released in August 2001. That report provided a preliminary evaluation of the Yucca Mountain site against the DOE's site suitability guidelines in proposed 10 CFR Part 963 (64 FR 67054). These two reports, as updated to reflect public comments and the final regulations, will form key parts of the information the Secretary will use to decide whether to recommend the Yucca Mountain site to the President for development as a geologic repository. Since completion of the technical analyses that provided the technical basis for these reports, additional information has been collected through the ongoing testing program, as well as obtained from other sources. This Technical Update Impact Letter Report documents this additional information and evaluates the potential impacts that it could have on the results of the total system performance assessment (TSPA) and preclosure safety assessment referenced in the Yucca Mountain Science and Engineering Report and the Yucca Mountain Preliminary Site Suitability Evaluation. The timeframe for this additional information varies, depending on the particular area being addressed. With respect to postclosure, the Total System Performance Assessment for the Site Recommendation (CRWMS M&O 2000a) was completed in December 2000 to support the Yucca Mountain Science and Engineering Report (DOE 2001a). The inputs to that TSPA were documented in a set of analysis and model reports that were prepared in late 1999 and throughout 2000. Some of these inputs, as well as some models, were updated in early to mid-2001 and documented in the FY01 Supplemental Science and Performance Analyses (BSC 2001a; BSC 2001b), which was completed in July 2001. These supplemental analyses were conducted to support the Yucca Mountain Preliminary Site Suitability Evaluation (DOE 2001b). With respect to preclosure, the Preliminary Preclosure Safety Assessment for Monitored Geologic Repository Site Recommendation (CRWMS M&O 2000b) was completed in November 2000 to support the Yucca Mountain Science and Engineering Report. This safety assessment was later updated in July 2001 (BSC 2001c) to support the Yucca Mountain Preliminary Site Suitability Evaluation (DOE 2001b). Therefore, while most of the additional information documented in this letter report refers to test results or other information from early 2001 to the present, some of the information dates back to the year 2000.
- Research Organization:
- Yucca Mountain Project, Las Vegas, NV (United States)
- Sponsoring Organization:
- US Department of Energy (US)
- DOE Contract Number:
- AC08-01RW12101
- OSTI ID:
- 796208
- Report Number(s):
- MOL.20011211.0311; MIS-MGR-RL-000001, Rev.00, ICN 02, DC #30256; TRN: US0206372
- Resource Relation:
- Other Information: PBD: 29 Nov 2001
- Country of Publication:
- United States
- Language:
- English
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