A Performance Assessment Methodology for Low-Level Waste Facilities (NUREG/CR-5532, SAND90-0375)

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Publication Information

Manuscript Completed: June 1990
Date Published: July 1990

Prepared by:
M. W. Kozak, M. S. Y. Chu, P. A. Mattingly*

Sandia National Laboratories
Albuquerque, NM 87185

*Science Applications International Corporation

Prepared for:
Division of Low-Level Waste Management and Decommissioning
Office of Nuclear Material Safety and Safeguards
U.S. Nuclear Regulatory Commission
Washington, DC 20555
NRC FIN A1764

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Abstract

A performance assessment methodology has been developed for use by the U.S. Nuclear Regulatory Commission in evaluating license applications for low-level waste disposal facilities. This report provides a summary of background reports on the development of the methodology and an overview of the models and codes selected for the methodology. The overview includes discussions of the philosophy and structure of the methodology and a sequential procedure for applying the methodology. Discussions are provided of models and associated assumptions that are appropriate for each phase of the methodology, the goals of each phase, data required to implement the models, significant sources of uncertainty associated with each phase, and the computer codes used to implement the appropriate models. In addition, a sample demonstration of the methodology is presented for a simple conceptual model.