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Home / Publications / Journals / Nuclear Technology / Volume 189 / Number 3

Radial Density Distribution in Irradiated FBR MOX Fuel Pellets

Akihiro Ishimi, Kozo Katsuyama, Hirofumi Nakamura, Takeo Asaga, Hirotaka Furuya

Nuclear Technology / Volume 189 / Number 3 / March 2015 / Pages 312-317

Technical Paper / Materials for Nuclear Systems /

First Online Publication:January 16, 2015
Updated:February 27, 2015

A high-resolution X-ray computed tomography (CT) technique was developed that made it possible to obtain fine X-ray CT images of an irradiated fuel assembly. In addition, the density distributions in an irradiated mixed oxide fuel pellet could be continually measured using the relationship between the densities and the CT values. These results were compared to the results obtained by the metallographic method. It was found that the relative change of radial density distributions in the irradiated fuel pellet can be measured more accurately by the X-ray CT technique than by metallographic examination.

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