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U.S. Department of Energy
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Control Rods in LMFBRs: A Physics Assessment

Technical Report ·
DOI:https://doi.org/10.2172/7094539· OSTI ID:7094539
 [1];  [1]
  1. Argonne National Lab. (ANL), Argonne, IL (United States)
This physics assessment is based on roughly 300 control rod worth measurements in ZPPR from 1972 to 1981. All ZPPR assemblies simulated mixed-oxide LMFBRs, representing sizes of 350, 700, and 900 MWe. Control rod worth measurements included single rods, various combinations of rods, and Ta and Eu rods. Additional measurements studied variations in B4C enrichment, rod interaction effects, variations in rod geometry, neutron streaming in sodium-filled channels, and axial worth profiles. Analyses were done with design-equivalent methods, using ENDF/B Version IV data. Some computations for the sensitivities to approximations in the methods have been included. Comparisons of these analyses with the experiments have allowed the status of control rod physics in the US to be clearly defined.
Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA), Nuclear Criticality Safety Program (NCSP)
DOE Contract Number:
W-31109-ENG-38
OSTI ID:
7094539
Report Number(s):
ANL-82-13; ON: DE83000935
Country of Publication:
United States
Language:
English