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Monte Carlo analysis of the slightly enriched uranium-D/sub 2/O critical experiment LTRIIA (AWBA Development Program)

Technical Report ·
DOI:https://doi.org/10.2172/5616741· OSTI ID:5616741
The Savannah River Laboratory LTRIIA slightly-enriched uranium-D/sub 2/O critical experiment was analyzed with ENDF/B-IV data and the RCP01 Monte Carlo program, which modeled the entire assembly in explicit detail. The integral parameters delta/sup 25/ and delta/sup 28/ showed good agreement with experiment. However, calculated K/sub eff/ was 2 to 3% low, due primarily to an overprediction of U238 capture. This is consistent with results obtained in similar analyses of the H/sub 2/O-moderated TRX critical experiments. In comparisons with the VIM and MCNP2 Monte Carlo programs, good agreement was observed for calculated reeaction rates in the B/sup 2/=0 cell.
Research Organization:
Bettis Atomic Power Lab., Pittsburgh, PA (USA)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA), Nuclear Criticality Safety Program (NCSP)
DOE Contract Number:
AC11-76PN00014
OSTI ID:
5616741
Report Number(s):
WAPD-TM-1482; ON: DE82007148
Country of Publication:
United States
Language:
English