Advances in mechanistic understanding of ...
Document type :
Article dans une revue scientifique
Permalink :
Title :
Advances in mechanistic understanding of iodine behaviour in PHEBUS-FP tests with the help of ab initio calculations
Author(s) :
Cantrel, Laurent [Auteur]
Laboratoire de Recherche commun IRSN-CNRS-Lille1 "Cinétique Chimique, Combustion, Réactivité" [C3R]
Institut de Radioprotection et de Sûreté Nucléaire [IRSN]
Louis, Florent [Auteur]
Laboratoire de Recherche commun IRSN-CNRS-Lille1 "Cinétique Chimique, Combustion, Réactivité" [C3R]
Physicochimie des Processus de Combustion et de l’Atmosphère - UMR 8522 [PC2A]
Cousin, Frédéric [Auteur]
Laboratoire de Recherche commun IRSN-CNRS-Lille1 "Cinétique Chimique, Combustion, Réactivité" [C3R]
Institut de Radioprotection et de Sûreté Nucléaire [IRSN]
Laboratoire de Recherche commun IRSN-CNRS-Lille1 "Cinétique Chimique, Combustion, Réactivité" [C3R]
Institut de Radioprotection et de Sûreté Nucléaire [IRSN]
Louis, Florent [Auteur]
Laboratoire de Recherche commun IRSN-CNRS-Lille1 "Cinétique Chimique, Combustion, Réactivité" [C3R]
Physicochimie des Processus de Combustion et de l’Atmosphère - UMR 8522 [PC2A]
Cousin, Frédéric [Auteur]
Laboratoire de Recherche commun IRSN-CNRS-Lille1 "Cinétique Chimique, Combustion, Réactivité" [C3R]
Institut de Radioprotection et de Sûreté Nucléaire [IRSN]
Journal title :
Annals of nuclear energy
Abbreviated title :
Ann. Nucl. Energy
Volume number :
61
Pages :
170-178
Publication date :
2013
HAL domain(s) :
Chimie/Chimie théorique et/ou physique
Physique [physics]/Physique [physics]/Chimie-Physique [physics.chem-ph]
Physique [physics]/Physique [physics]/Chimie-Physique [physics.chem-ph]
English abstract : [en]
Analysis of the results of the Phébus experimental program identified phenomena related to fission product behaviour that are insufficiently described by available empirical models. The combining experimental and theoretical ...
Show more >Analysis of the results of the Phébus experimental program identified phenomena related to fission product behaviour that are insufficiently described by available empirical models. The combining experimental and theoretical strategy implemented by IRSN to develop models that are able to predict any pressurised water reactor (PWR) severe accident transient is illustrated here for one of these phenomena, the presence of gaseous iodine at the break of the reactor coolant system (RCS). Kinetics modelling of the {I, O, H} chemical system in the RCS under severe accident conditions computed using quantum chemistry and validated against separate-effect experiments are used to re-interpret with a notable improvement the FPT1 experimental data contrary to the FPT3 one. After being implemented in the ASTEC (Accident Source Term Evaluation Code) software, these new models will contribute to a reduction in uncertainties in the prediction of the iodine source term.Show less >
Show more >Analysis of the results of the Phébus experimental program identified phenomena related to fission product behaviour that are insufficiently described by available empirical models. The combining experimental and theoretical strategy implemented by IRSN to develop models that are able to predict any pressurised water reactor (PWR) severe accident transient is illustrated here for one of these phenomena, the presence of gaseous iodine at the break of the reactor coolant system (RCS). Kinetics modelling of the {I, O, H} chemical system in the RCS under severe accident conditions computed using quantum chemistry and validated against separate-effect experiments are used to re-interpret with a notable improvement the FPT1 experimental data contrary to the FPT3 one. After being implemented in the ASTEC (Accident Source Term Evaluation Code) software, these new models will contribute to a reduction in uncertainties in the prediction of the iodine source term.Show less >
Language :
Anglais
Audience :
Internationale
Popular science :
Non
Administrative institution(s) :
Université de Lille
CNRS
CNRS
Research team(s) :
Cinétique chimique, Combustion, Réactivité (C3R) : Sûreté Nucléaire
Submission date :
2018-11-27T14:37:21Z
2020-03-09T10:42:29Z
2020-03-09T10:42:29Z