Interpretation and modelling of fission product Ba and Mo releases from fuel

Brillant, G.

doi:10.1016/j.jnucmat.2009.12.004

Cited by 16 publications

(9 citation statements)

References 28 publications

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“…The consequences in case of accident can be estimated using FP release models that take into account FP localization and speciation in fuel pellets. FP can be classified among groups depending on their degree of volatility: volatile like Xe, Kr, Cs, I and Te, semi-volatile like Ba, Mo, Sr and Ru, low-volatile like Zr and Ce and non-volatile [1,2]. FP of the first group are highly and rapidly released and the release is governed by atomic diffusion within fuel grains.…”

Section: Introductionmentioning

confidence: 99%

Fission products stability in uranium dioxide

Brillant

Gupta

Pasturel

2011

Journal of Nuclear Materials

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Section: Introductionmentioning

confidence: 99%

Fission products stability in uranium dioxide

Brillant

Gupta

Pasturel

2011

Journal of Nuclear Materials

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“…Molybdenum can be included among the semi-volatile fission products group with release fractions measured from 33% to 100%. In fact, molybdenum is more released under oxidizing conditions [14]. Europium is a low volatile fission product with a final release fraction that does not exceed 5%, excepted the two highly reducing tests HT1 and HT3 (9% and 10% respectively).…”

Section: Ru Release In the Vercors Experimentsmentioning

confidence: 95%

Ruthenium release from fuel in accident conditions

Brillant¹,

Marchetto

Plumecocq

2010

Radiochimica Acta

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During a hypothetical nuclear power plant accident, fission products may be released from the fuel matrix and then reach the containment building and the environment. Ruthenium is a very hazardous fission product that can be highly and rapidly released in some accident scenarios. The impact of the atmosphere redox properties, temperature, and fuel burn-up on the ruthenium release is discussed. In order to improve the evaluation of the radiological impact by accident codes, a model of the ruthenium release from fuel is proposed using thermodynamic equilibrium calculations. In addition, a model of fuel oxidation under air is described. Finally, these models have been integrated in the ASTEC accident code and validation calculations have been performed on several experimental tests.

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“…The VERCORS test results were analyzed by the ELSA module in the ASTEC code system [42,43]. In the ELSA module, the chemical forms of FPs and actinides were analyzed by the chemical equilibrium calculation [42].…”

Section: Analytical Research Studies For Fp and Actinide Release Behamentioning

confidence: 99%

“…In the ELSA module, the chemical forms of FPs and actinides were analyzed by the chemical equilibrium calculation [42]. Estimated values for Mo and Ba, which could not be reproduced by the CORSOR model series, showed good agreement with experimental values in the VERCORS tests [43].…”

Section: Analytical Research Studies For Fp and Actinide Release Behamentioning

confidence: 99%

Research Program for the Evaluation of Fission Product and Actinide Release Behaviour, Focusing on their Chemical Forms

et al. 2015

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We have launched a new research program for evaluation of fission product and actinide release behaviour under severe accident conditions, focusing on their chemical forms. In this research program, the fission product and actinide release models incorporated in the severe accident analysis code will be improved by implementing effects of chemical forms that are to be obtained by an experimental investigation on the fission product and actinide release behaviour from irradiated fuels. A novel insitu measurement method of chemical forms of fission products and actinides just after their release as well as an off-line analysis method will be employed as the experimental means for evaluating the chemical forms at the release and their stability after release.

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Interpretation and modelling of fission product Ba and Mo releases from fuel

Cited by 16 publications

References 28 publications

Fission products stability in uranium dioxide

Fission products stability in uranium dioxide

Ruthenium release from fuel in accident conditions

Research Program for the Evaluation of Fission Product and Actinide Release Behaviour, Focusing on their Chemical Forms

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