Paper Title:
Restructuring of Nuclear Oxide Fuel under High Burnup Irradiation
  Abstract

The ceramics fuel of UO2, irradiated in power reactors, has restructuring at high burnup, around 70MWd/kgU, which is near in the scope of future fuel utilization with improving economy. The original grains are divided into sub-grains of 100 nm scale and segregation of fission gas (Xe, Kr) grows bubbles resulting in volumetric swelling of the fuel. This restructuring was investigated in the field of nuclear engineering of power reactor fuel industry. This presentation briefly provides observations of this restructuring and some of engineering consequences. In a mechanism study a new approach, combing accelerator irradiation and computational science has been started and some of initial results are presented.

  Info
Periodical
Edited by
P. VINCENZINI
Pages
1952-1960
DOI
10.4028/www.scientific.net/AST.45.1952
Citation
M. Kinoshita, "Restructuring of Nuclear Oxide Fuel under High Burnup Irradiation", Advances in Science and Technology, Vol. 45, pp. 1952-1960, 2006
Online since
October 2006
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