Study and Evaluation of Innovative Fuel Handling Systems for Sodium-Cooled Fast Reactors: Fuel Handling Route Optimization

Franck Dechelette 1 Franck Morin 2 Guy Laffont 3 Gilles Rodriguez 3 Emmanuel Sanseigne 1 Sébastien Christin 1 Xavier Mognot 1 Aurélien Morcillo 1
1 STCP - Service de Technologie des Composants et des Procédés
2 SESI - Service d'Etudes des Systèmes Innovants
3 DER - Département Etude des Réacteurs
Abstract : The research for technological improvement and innovation in sodium-cooled fast reactor is a matter of concern in fuel handling systems in a view to perform a better load factor of the reactor thanks to a quicker fuelling/defueling process. An optimized fuel handling route will also limit its investment cost. In that field, CEA has engaged some innovation study either of complete FHR or on the optimization of some specific components. This paper presents the study of three SFR fuel handling route fully described and compared to a reference FHR option. In those three FHR, two use a gas corridor to transfer spent and fresh fuel assembly and the third uses two casks with a sodium pot to evacuate and load an assembly in parallel. All of them are designed for the ASTRID reactor (1500MWth) but can be extrapolated to power reactors and are compatible with the mutualisation of one FHS coupled with two reactors. These three concepts are then intercompared and evaluated with the reference FHR according to four criteria: performances, risk assessment, investment cost, and qualification time. This analysis reveals that the "mixed way" FHR presents interesting solutions mainly in terms of design simplicity and time reduction. Therefore its study will be pursued for ASTRID as an alternative option.
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Franck Dechelette, Franck Morin, Guy Laffont, Gilles Rodriguez, Emmanuel Sanseigne, et al.. Study and Evaluation of Innovative Fuel Handling Systems for Sodium-Cooled Fast Reactors: Fuel Handling Route Optimization. Science and Technology of Nuclear Installations, 2014, Volume 2014, Article ID 254913, 14 p. ⟨10.1155/2014/254913⟩. ⟨cea-00959498⟩

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