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U.S. Department of Energy
Office of Scientific and Technical Information

Features, Events, and Processes in UZ and Transport

Technical Report ·
DOI:https://doi.org/10.2172/840432· OSTI ID:840432

The purpose of this report is to evaluate and document the inclusion or exclusion of the unsaturated zone (UZ) features, events, and processes (FEPs) with respect to modeling that supports the total system performance assessment (TSPA) for license application (LA) for a nuclear waste repository at Yucca Mountain, Nevada. A screening decision, either ''Included'' or ''Excluded'', is given for each FEP, along with the technical basis for the screening decision. This information is required by the U.S. Nuclear Regulatory Commission (NRC) in 10 CFR 63.114 (d, e, and f) [DIRS 156605]. The FEPs deal with UZ flow and radionuclide transport, including climate, surface water infiltration, percolation, drift seepage, and thermally coupled processes. This analysis summarizes the implementation of each FEP in TSPA-LA (that is, how the FEP is included) and also provides the technical basis for exclusion from TSPA-LA (that is, why the FEP is excluded). This report supports TSPA-LA.

Research Organization:
Yucca Mountain Project, Las Vegas, Nevada (US)
Sponsoring Organization:
US Department of Energy (US)
DOE Contract Number:
AC28-01RW12101
OSTI ID:
840432
Report Number(s):
ANL-NBS-MD-000001, REV 03; DOC.20041108.0004, DC41587
Country of Publication:
United States
Language:
English

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