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Effect of Loading Pattern on Thermal and Shielding Performance of a Spent Fuel Cask

[+] Author Affiliations
Mikal A. McKinnon, Judith M. Cuta, Urban P. Jenquin

Pacific Northwest National Laboratory, Richland, WA

Paper No. ICONE10-22041, pp. 243-250; 8 pages
doi:10.1115/ICONE10-22041
From:
  • 10th International Conference on Nuclear Engineering
  • 10th International Conference on Nuclear Engineering, Volume 4
  • Arlington, Virginia, USA, April 14–18, 2002
  • Conference Sponsors: Nuclear Engineering Division
  • ISBN: 0-7918-3598-7 | eISBN: 0-7918-3589-8
  • Copyright © 2002 by ASME

abstract

Two key considerations that must be addressed in licensing spent fuel storage systems are peak cladding temperatures and surface dose rates. Generally, storage systems are approved for a uniform loading of a design basis fuel. This analytical study addresses the effect of non-uniform loading patterns on peak fuel temperatures and cask surface dose rates. Three radial power distributions are considered: uniform loading, hotter assemblies in the center of the cask, and hotter assemblies near the wall of the cask. This paper summarizes the results of an analytical study [1] in which it was shown that, for the same total heat load in a cask, peak fuel temperatures are reduced by loading hotter assemblies around the outside of the cask’s basket. It was also shown that loading the hotter assemblies around the outside of the cask results in modest increases in surface dose rates.

Copyright © 2002 by ASME

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