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Title: Modernization at the Y-12 National Security Complex: A Case for Additional Experimental Benchmarks

Abstract

Efforts are underway at the Y-12 National Security Complex (Y-12) to modernize the recovery, purification, and consolidation of un-irradiated, highly enriched uranium metal. Successful integration of advanced technology such as Electrorefining (ER) eliminates many of the intermediate chemistry systems and processes that are the current and historical basis of the nuclear fuel cycle at Y-12. The cost of operations, the inventory of hazardous chemicals, and the volume of waste are significantly reduced by ER. It also introduces unique material forms and compositions related to the chemistry of chloride salts for further consideration in safety analysis and engineering. The work herein briefly describes recent investigations of nuclear criticality for 235UO2Cl2 (uranyl chloride) and 6LiCl (lithium chloride) in aqueous solution. Of particular interest is the minimum critical mass of highly enriched uranium as a function of the molar ratio of 6Li to 235U. The work herein also briefly describes recent investigations of nuclear criticality for 235U metal reflected by salt mixtures of 6LiCl or 7LiCl (lithium chloride), KCl (potassium chloride), and 235UCl3 or 238UCl3 (uranium tri-chloride). Computational methods for analysis of nuclear criticality safety and published nuclear data are employed in the absence of directly relevant experimental criticality benchmarks.

Authors:
 [1];  [1];  [1]
  1. Y-12 National Security Complex, Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge Y-12 Plant (Y-12), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1375042
Report Number(s):
MS/THO-170814
DOE Contract Number:
DE-NA0001942
Resource Type:
Conference
Resource Relation:
Conference: 2017 American Nuclear Society (ANS) Winter Meeting and Nuclear Technology Expo
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Nuclear fuel cycle, enriched uranium, nuclear criticality safety, recovery, purification, electrorefining

Citation Formats

Thornbury, M. L., Juarez, C., and Krass, A. W. Modernization at the Y-12 National Security Complex: A Case for Additional Experimental Benchmarks. United States: N. p., 2017. Web.
Thornbury, M. L., Juarez, C., & Krass, A. W. Modernization at the Y-12 National Security Complex: A Case for Additional Experimental Benchmarks. United States.
Thornbury, M. L., Juarez, C., and Krass, A. W. Mon . "Modernization at the Y-12 National Security Complex: A Case for Additional Experimental Benchmarks". United States. doi:. https://www.osti.gov/servlets/purl/1375042.
@article{osti_1375042,
title = {Modernization at the Y-12 National Security Complex: A Case for Additional Experimental Benchmarks},
author = {Thornbury, M. L. and Juarez, C. and Krass, A. W.},
abstractNote = {Efforts are underway at the Y-12 National Security Complex (Y-12) to modernize the recovery, purification, and consolidation of un-irradiated, highly enriched uranium metal. Successful integration of advanced technology such as Electrorefining (ER) eliminates many of the intermediate chemistry systems and processes that are the current and historical basis of the nuclear fuel cycle at Y-12. The cost of operations, the inventory of hazardous chemicals, and the volume of waste are significantly reduced by ER. It also introduces unique material forms and compositions related to the chemistry of chloride salts for further consideration in safety analysis and engineering. The work herein briefly describes recent investigations of nuclear criticality for 235UO2Cl2 (uranyl chloride) and 6LiCl (lithium chloride) in aqueous solution. Of particular interest is the minimum critical mass of highly enriched uranium as a function of the molar ratio of 6Li to 235U. The work herein also briefly describes recent investigations of nuclear criticality for 235U metal reflected by salt mixtures of 6LiCl or 7LiCl (lithium chloride), KCl (potassium chloride), and 235UCl3 or 238UCl3 (uranium tri-chloride). Computational methods for analysis of nuclear criticality safety and published nuclear data are employed in the absence of directly relevant experimental criticality benchmarks.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Aug 14 00:00:00 EDT 2017},
month = {Mon Aug 14 00:00:00 EDT 2017}
}

Conference:
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