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Title: Neutronics benchmarks of mixed-oxide fuels using the SCALE/CENTRM sequence

Technical Report ·
DOI:https://doi.org/10.2172/752979· OSTI ID:752979

The purpose of this study is to determine and document the reactor physics parameters (multiplication factors, spatially dependent flux ratios, and spacially dependent reaction rates ) for several distinct sets of problems using two distinct resonance cross-section processing techniques. In SCALE, by default, resonances are processed using NITAWL, which utilizes the Nordheim Integral Treatment. The results produced using this sequence are considered to be the base results. A second set of results are produced by replacing NITAWL with CENTRM/PMC. CENTRM produces point-wise fluxes for a given geometry configuration and set of isotopes. Using these fluxes, PMC produces problem-dependent self-shielding cross sections. Both sequences use ENDF/B-V cross-section data.

Research Organization:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Nuclear Energy, Science and Technology (NE) (US)
DOE Contract Number:
AC05-00OR22725
OSTI ID:
752979
Report Number(s):
ORNL/TM-1999/299; TRN: US0001601
Resource Relation:
Other Information: PBD: 1 Feb 2000
Country of Publication:
United States
Language:
English