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Title: Neutronics Conversion Analyses of the Laue-Langevin Institute (ILL) High Flux Reactor (RHF)

The following report describes the neutronics results obtained with the MCNP model of the RHF U7Mo LEU reference design that has been established in 2010 during the feasibility analysis. This work constitutes a complete and detailed neutronics analysis of that LEU design using models that have been significantly improved since 2010 and the release of the feasibility report. When possible, the credibility of the neutronics model is tested by comparing the HEU model results with experimental data or other codes calculations results. The results obtained with the LEU model are systematically compared to the HEU model. The changes applied to the neutronics model lead to better comparisons with experimental data or improved the calculation efficiency but do not challenge the conclusion of the feasibility analysis. If the U7Mo fuel is commercially available, not cost prohibitive, a back-end solution is established and if it is possible to manufacture the proposed element, neutronics analyses show that the performance of the reactor would not be challenged by the conversion to LEU fuel.
Authors:
 [1] ;  [1] ;  [2]
  1. Argonne National Lab. (ANL), Argonne, IL (United States)
  2. Inst. Laue-Langevin (ILL), Grenoble (France)
Publication Date:
OSTI Identifier:
1227390
Report Number(s):
ANL/GTRI/TM--14/15
122482; TRN: US1500913
DOE Contract Number:
AC02-06CH11357
Resource Type:
Technical Report
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA), Office of Defense Nuclear Nonproliferation (NA-20)
Country of Publication:
United States
Language:
English
Subject:
22 GENERAL STUDIES OF NUCLEAR REACTORS; COMPARATIVE EVALUATIONS; CONVERSION; URANIUM BASE ALLOYS; MOLYBDENUM ALLOYS; BINARY ALLOY SYSTEMS; NUCLEAR FUELS; EFFICIENCY; PERFORMANCE; RESEARCH REACTORS; HEAVY WATER COOLED REACTORS; HEAVY WATER MODERATED REACTORS; ENRICHED URANIUM REACTORS; FRANCE; SLIGHTLY ENRICHED URANIUM; HIGHLY ENRICHED URANIUM; REACTOR KINETICS; NEUTRON TRANSPORT THEORY; MATHEMATICAL MODELS