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Integral Experiment Request 523 CED – 1 Report

Cook, William M.; Foulk, James W.; Lutz, Elijah; Cole, James; Raster, Ashley R.; Miller, John; Harms, Gary A.; Marshall, William J.; Zerkle, Michael

This report documents the preliminary design phase of the Critical Experiment Design (CED-1) conducted as part of integral experiment request (IER) 523. The purpose of IER-523 is to determine critical configurations of 35 weight percent (wt%) enriched uranium dioxideberyllium oxide (UO₂-BeO) material with Seven Percent Critical Experiment (7uPCX) fuels at Sandia National Laboratories (Sandia). Preliminary experiment design concepts, neutronic analysis results, and proposed paths for continuing the CED process are presented. This report builds on the feasibility and justification of experimental need report (CED-0) completed in December 2021.