Analysis of accidental sequence tests and interpretation of fission product release: interdependence of Cs, Mo, and Ba release
Résumé
The behaviour of fission products (F.P.) during fuel life in a nuclear reactor is of particular importance as it plays a significant role in the release kinetics during hypothetical reactor severe accident transients. A description of (137 Cs, 99 Mo, 140 Ba) chemical states after some UO2 fuel irradiation stages is drawn. Molybdenum is supposed to be localised in a MoO2 precipitate (volatile over 1273K) and chemical reactions with condensed Cs oxides and/or uranates are possible. According to this description, a coherent interpretation is presented for some accidental sequence tests providing new ideas for release mechanisms of (Cs, Mo, Ba).
Domaines
Physique [physics]
Origine : Fichiers produits par l'(les) auteur(s)