Oxygen potential of high burn-up fast breeder oxide fuel

Matzke, Hj.; Ottaviani, Jean-Pierre; Pellottiero, D.; Rouault, Jacques

doi:10.1016/0022-3115(88)90041-4

Cited by 33 publications

(4 citation statements)

References 12 publications

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“…The oxygen potential of this sample, as measured in another work [9], is about DG O 2 ¼ À290 kJ=mol at 1023 K, which is close to the value for UO 2.05 also obtained from the oxygen bearing signals of uranium species measurements [28][29][30][31]. The results from the present measurement (Fig.…”

Section: Uraniumsupporting

confidence: 75%

Thermodynamic study of actinides and lanthanides during total vaporisation of a very high burn-up UO2 fuel

Hiernaut

Gotcu-Freis

Colle

et al. 2008

Journal of Nuclear Materials

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Section: Uraniumsupporting

confidence: 75%

Thermodynamic study of actinides and lanthanides during total vaporisation of a very high burn-up UO2 fuel

Hiernaut

Gotcu-Freis

Colle

et al. 2008

Journal of Nuclear Materials

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“…The annealing furnace scavenged by a gas mixture of N 2 + 1%H 2 included online oxygen partial pressure measurement provisions to monitor any stoichiometric deviation versus the temperature. The deviations were calculated on the basis of published work in this area, notably [13,14]. The oxygen partial pressure was imposed by the water dissociation reaction, according to the principles and model discussed in [15].…”

Section: Helium-3 Implantation and Sample Annealingmentioning

confidence: 99%

Helium thermal diffusion in a uranium dioxide matrix

Roudil

Deschanels

Trocellier

et al. 2004

Journal of Nuclear Materials

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“…For every atom undergoing fission, nearly two fission product atoms are produced. Even though the concentration of these "impurity" atoms is relatively small, it has been shown that the oxygen potential of the fuel changes, at least initially, with burnup [3]. The thermal stress to which the fuel is subjected results in radial and axial cracking.…”

Section: Introductionmentioning

confidence: 99%

Grain Size and Burnup Dependence of Spent Fuel Oxidation: Geological Repository Impact

1999

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Further refinements to the oxidation model of Stout et al. have been made. The present model incorporates the burnup dependence of the oxidation rate and an allowance for a distribution of grain sizes. The model was tested by comparing the model results with the oxidation histories of spent-fuel samples oxidized in thermogravimetric analysis (TGA) or oven dry-bath (ODB) experiments. The experimental and model results are remarkably close and confirm the assumption that grain-size distributions and activation energies are the important parameters to predicting oxidation behavior. The burnup dependence of the activation energy was shown to have a greater effect than decreasing the effective grain size in suppressing the rate of the reaction U4O9→U3O8. Model results predict that U3O8 formation of spent fuels exposed to oxygen will be suppressed even for high burnup fuels that have undergone restructuring in the rim region, provided the repository temperature is kept sufficiently low.

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Oxygen potential of high burn-up fast breeder oxide fuel

Cited by 33 publications

References 12 publications

Thermodynamic study of actinides and lanthanides during total vaporisation of a very high burn-up UO2 fuel

Thermodynamic study of actinides and lanthanides during total vaporisation of a very high burn-up UO2 fuel

Helium thermal diffusion in a uranium dioxide matrix

Grain Size and Burnup Dependence of Spent Fuel Oxidation: Geological Repository Impact

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