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TEX-Chlorine: Highly Enriched Uranium with Chloride Absorbers to Provide Validation Benchmarks for Y-12 Electrorefining Facility

Technical Report ·
DOI:https://doi.org/10.2172/3005945· OSTI ID:3005945
 [1];  [1];  [1];  [2]
  1. Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
  2. Idaho National Laboratory (INL), Idaho Falls, ID (United States)

This report documents the final benchmark of the TEX-Chlorine (IER-499) Thermal Epithermal eXperiments (TEX) with highly enriched uranium with chlorine absorbers and high-density polyethylene reflectors and moderators. TEX-Chlorine is a variation of the TEX-HEU baseline assembly with the addition of sodium chloride absorber plates. This evaluation contains three experimental configurations that were performed on Comet at NCERC between July and August 2024. The three configurations, which were acceptable as benchmark cases, spanned from thermal (first two configurations) to fast (third configuration). All three cases were reviewed and accepted by the ICSBEP TRG in April 2025 and was submitted to the ICSBEP in August 2025 after receiving subgroup approval.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA), Nuclear Criticality Safety Program (NCSP)
DOE Contract Number:
AC52-07NA27344
OSTI ID:
3005945
Report Number(s):
LLNL--TR-2002677; NEA/NSC/DOC(95)03/II; HEU-MET-THERM-038
Country of Publication:
United States
Language:
English