Journal of Power and Energy Systems
Online ISSN : 1881-3062
A Design Study of High Breeding Ratio Sodium Cooled Metal Fuel Core without Blanket Fuels
Noboru KOBAYASHITakashi OGAWAShigeo OHKITomoyasu MIZUNOTakanari OGATA
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2009 Volume 3 Issue 1 Pages 126-135


The metal fuel core is superior to the mixed oxide fuel core because of its high breeding ratio and compact core size resulting from hard neutron spectrum and high heavy metal densities. Utilizing these characteristics, a conceptual design for a high breeding ratio was performed without blanket fuels. The design conditions were set so a sodium void worth of less than 8 $, a core height of less than 150 cm, the maximum cladding temperature of 650 °C, and the maximum fuel pin bundle pressure drop of 0.4MPa. The breeding ratio of the resultant core was 1.34 with 6wt% zirconium content fuel. Applying 3wt% zirconium content fuel enhanced the breeding ratio up to 1.40.

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© 2009 by The Japan Society of Mechanical Engineers
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