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http://dx.doi.org/10.5516/NET.2011.43.1.075

EFFECT OF STAINLESS STEEL PLATE POSITION ON NEUTRON MULTIPLICATION FACTOR IN SPENT FUEL STORAGE RACKS  

Sohn, Hee-Dong (Doosan Heavy Industries & Construction)
Kim, Jong-Kyung (Nuclear Engineering Hanyang University)
Publication Information
Nuclear Engineering and Technology / v.43, no.1, 2011 , pp. 75-82 More about this Journal
Abstract
The neutron multiplication factor in spent fuel storage racks, in which a stainless steel plate encloses a fuel assembly, was evaluated according to the variation of distance between the fuel assembly and stainless steel plate, as well as the pitch. The stainless steel plate position with the lowest multiplication factor on each pitch consistently appeared as 6mm or 9mm away from the outmost surface of the fuel assembly. Because the stainless steel plate has a thermal neutron absorption cross section, its ability to absorb neutrons can work best only if it is installed at the position where thermal neutrons can be gathered most easily. Therefore, the stainless steel plate position should not be too close or too far away from the fuel assembly, but it should be kept a pertinent distance from the fuel assembly.
Keywords
Spent Fuel Storage Rack; Multiplication Factor; Stainless Steel Plate;
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  • Reference
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