2006
DOI: 10.3327/jnst.43.967
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Advanced Doped UO2 Pellets in LWR Applications

Abstract: The nuclear industry strives to reduce the fuel cycle cost, enhance flexibility and improve the reliability of operation. This can be done by both increasing the fuel weight and optimizing rod internal properties that affect operational margins. Further, there is focus on reducing the consequences of fuel failures. To meet these demands Westinghouse has developed ADOPT (Advanced Doped Pellet Technology) UO 2 fuel containing additions of chromium and aluminium oxides. This paper presents results from the extens… Show more

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Cited by 27 publications
(41 citation statements)
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“…The non-stoichiometry-driven change in the location of the maximum deformation due to thermal expansion as a function of the heat generation rate (or else reactor-operating conditions) suggests the existence of ''weak" circular regions in the fuel pellet, favorable to nucleation of angular and radial cracks. This is consistent with the multiple-annulus aspect of the cross section of ceramic nuclear fuel pellets [33].…”
Section: Steady-state Casesupporting
confidence: 76%
“…The non-stoichiometry-driven change in the location of the maximum deformation due to thermal expansion as a function of the heat generation rate (or else reactor-operating conditions) suggests the existence of ''weak" circular regions in the fuel pellet, favorable to nucleation of angular and radial cracks. This is consistent with the multiple-annulus aspect of the cross section of ceramic nuclear fuel pellets [33].…”
Section: Steady-state Casesupporting
confidence: 76%
“…Details of the fabrication process are given in Arborelius et al [11]. Both initial powders were pressed into green pellets with a force of 50 kN and then sintered in a H 2 /CO 2 gas mixture at 1800°C during 14 h. Additives of Cr and Al are limited to 1000 ppm in the ADOPT material.…”
Section: Methodsmentioning
confidence: 99%
“…The effect of the pellet types is discussed in the reference. 3) A reason for the effect of position could be a larger amount of fission products released to pellet-pellet interfaces than to mid-pellets. The axial gamma scanning after the irradiation tests showed activity spikes of caesium and iodine at the pellet-pellet interfaces.…”
Section: Number Of Incipient Cracksmentioning
confidence: 99%