Preclosure radiological safety analysis for accident conditions of the potential Yucca Mountain Repository: Underground facilities; Yucca Mountain Site Characterization Project
- Bechtel National, Inc., San Francisco, CA (United States)
- Sandia National Labs., Albuquerque, NM (United States)
This preliminary preclosure radiological safety analysis assesses the scenarios, probabilities, and potential radiological consequences associated with postulated accidents in the underground facility of the potential Yucca Mountain repository. The analysis follows a probabilistic-risk-assessment approach. Twenty-one event trees resulting in 129 accident scenarios are developed. Most of the scenarios have estimated annual probabilities ranging from 10{sup {minus}11}/yr to 10{sup {minus}5}/yr. The study identifies 33 scenarios that could result in offsite doses over 50 mrem and that have annual probabilities greater than 10{sup {minus}9}/yr. The largest offsite dose is calculated to be 220 mrem, which is less than the 500 mrem value used to define items important to safety in 10 CFR 60. The study does not address an estimate of uncertainties, therefore conclusions or decisions made as a result of this report should be made with caution.
- Research Organization:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Bechtel National, Inc., San Francisco, CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 140766
- Report Number(s):
- SAND-88-7061; ON: DE92017362; TRN: 92:034613
- Resource Relation:
- Other Information: PBD: Jun 1992
- Country of Publication:
- United States
- Language:
- English
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