Screening Analysis of Criticality Features, Events, and Processes for License Application
D.A. Brownson, S. Almodóvar, C. Hsu, D. Thomas, Julie Knudsen · 2004
This report documents the screening analysis of postclosure criticality features, events, and processes. It addresses the probability of criticality events resulting from degradation processes as well as disruptive events (i.e., seismic, rock fall, and igneous). Probability evaluations are performed utilizing the configuration generator described in "Configuration Generator Model", a component of the methodology from "Disposal Criticality Analysis Methodology Topical Report". The total probability per package of criticality is compared against the regulatory probability criterion for inclusion of events established in 10 CFR 63.114(d) (consider only events that have at least one chance in 10,000 of occurring over 10,000 years). The total probability of criticality accounts for the evaluation of identified potential critical configurations of all baselined commercial and U.S. Department of Energy spent nuclear fuel waste form and waste package combinations, both internal and external to the waste packages and for both steady-state and transient conditions.