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U.S. Department of Energy
Office of Scientific and Technical Information

PRELIMINARY HOT SPOT ANALYSIS OF THE HFIR

Technical Report ·
DOI:https://doi.org/10.2172/4164352· OSTI ID:4164352
The effects of variations in HFIR design tolerances and uncertainty factors on hot spot, hot channel, and burnout margin factors have been calculated via the IBM 704. Graphs are presented of hot spot and hot channel factors and burnout margin factors as a function of each of these variables. These graphs may be used in establishing permissible design tolerances, and to calculate over- all hot spot, hot channel, and burnout margin factors. Also included are plots showing the effects of operating pressure and flow variations on burnout. Based on the current HFIR core design, the maximum fuel plate (oxide surface) temperature is estimated to be 362 deg F with a maximum hot spot heat flux of 1.4 x 10/sup 6/ Btu/hr-ft/sup 2/. The minimum burnout heat flux for this reactor geometry is calculated to be a factor of 2.51 above the maximum operating heat flux. (auth)
Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
US Atomic Energy Commission (AEC)
NSA Number:
NSA-14-016410
OSTI ID:
4164352
Report Number(s):
CF-60-3-12
Country of Publication:
United States
Language:
English