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Nuclear Dynamics Consequence Analysis (NDCA) for the Disposal of Spent Nuclear Fuel in an Underground Geologic Repository, Volume 3: Appendices

Technical Report ·
DOI:https://doi.org/10.2172/769092· OSTI ID:769092
 [1];  [2];  [3];  [4];  [3];  [5];  [5]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Idaho National Engineering and Environmental Laboratory
  2. New Mexico Engineering Research Inst., Albuquerque, NM (United States)
  3. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  4. Sandia National Labs (SNL), Albuquerque, NM, and Livermore, CA (United States)
  5. Idaho National Engineering and Environmental Lab., Idaho Falls, ID (United States)

The United States Department of Energy Office of Environmental Management's (DOE/EM's) National Spent Nuclear Fuel Program (NSNFP), through a collaboration between Sandia National Laboratories (SNL) and Idaho National Engineering and Environmental Laboratory (INEEL), is conducting a systematic Nuclear Dynamics Consequence Analysis (NDCA) of the disposal of SNFs in an underground geologic repository sited in unsaturated tuff. This analysis is intended to provide interim guidance to the DOE for the management of the SNF while they prepare for final compliance evaluation. This report presents results from a Nuclear Dynamics Consequence Analysis (NDCA) that examined the potential consequences and risks of criticality during the long-term disposal of spent nuclear fuel owned by DOE-EM. This analysis investigated the potential of post-closure criticality, the consequences of a criticality excursion, and the probability frequency for post-closure criticality. The results of the NDCA are intended to provide the DOE-EM with a technical basis for measuring risk which can be used for screening arguments to eliminate post-closure criticality FEPs (features, events and processes) from consideration in the compliance assessment because of either low probability or low consequences. This report is composed of an executive summary (Volume 1), the methodology and results of the NDCA (Volume 2), and the applicable appendices (Volume 3).

Research Organization:
Idaho National Engineering and Environmental Lab., Idaho Falls, ID (United States); Sandia National Laboratories (SNL-CA), Livermore, CA (United States); Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE Office of Environmental Management (EM); USDOE National Nuclear Security Administration (NNSA), Nuclear Criticality Safety Program (NCSP)
DOE Contract Number:
AC07-94ID13223; AC04-94AL85000
OSTI ID:
769092
Report Number(s):
DOE/SNF/REP--0033; INEEL/EXT--98-00996; SAND98--2208/3
Country of Publication:
United States
Language:
English