Preclosure safety analysis for a prospective Yucca Mountain conceptual design repository
- Bechtel National, Inc., San Francisco, CA (USA)
- Lawrence Livermore National Lab., CA (USA)
A preliminary probabilistic risk assessment was performed for the prospective Yucca Mountain conceptual design repository. A new methodology to quantify radioactive source terms was developed and applied in the analysis. The study identified 42 event trees comprising 278 accident scenarios. The maximum offsite dose evaluated in this study is about 1000 mrem. For the majority of the accident scenarios, either the offsite dose is less than 100 mrem or the probability of occurrence is less than 1 {times} 10{sup {minus}9}/yr. Only 11 accident scenarios with a dose larger than 100 mrem and an associated probability greater than 1 {times} 10{sup {minus}9}/yr were identified. A more detailed follow-on analysis for seismic events of various severity was also performed, and similar results were obtained. Therefore, based on the results of this analysis, no significant risk to the general public was identified during the preclosure period for the conceptual repository design. 13 refs., 4 figs., 2 tabs.
- Research Organization:
- Lawrence Livermore National Lab., CA (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 137793
- Report Number(s):
- UCRL--102115; CONF-900406--72; ON: DE90015613
- Country of Publication:
- United States
- Language:
- English
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Preliminary preclosure safety analysis for a prospective Yucca mountain repository
Preliminary preclosure safety analysis for a prospective Yucca Mountain repository
Related Subjects
ACCIDENTS
CESIUM
FAILURE MODE ANALYSIS
HIGH-LEVEL RADIOACTIVE WASTES
KRYPTON 85
PROBABILITY
RADIATION DOSES
RADIATION PROTECTION
RADIOACTIVE WASTE FACILITIES
RADIONUCLIDE MIGRATION
RISK ASSESSMENT
SAFETY
SEISMIC EVENTS
SITE CHARACTERIZATION
SOURCE TERMS
SPENT FUELS
UNDERGROUND DISPOSAL
YUCCA MOUNTAIN
Yucca Mountain Project