This work has been carried out within the framework of the EUROTRANS project. A detailed neutronic analysis of a 300 MWth sub-critical lead cooled reactor, loaded with a large amount of minor actinides and modelled similarly to the 80 MWth LBE PDS-XADS far what concerns the geometrical shape and structural materials, has been performed by means of deterministic methods (with a special procedure .MECONG that makes usa of some ERANOS modules). The fuel isotopic composition, U-free oxide inserted in a MgO matrix (50% volume), has been provided by CEA. Adopting the PDS-XADS fuel cell geometry as reference, the main purpose of this work is to evaluate the influence of the fuel pin diameter (and the corresponding enrichment in Plutonium) on the care performances. In particular, the capability of these systems to burn and transmute minor actinides has been verified by means of burn up calculations (for about five years without refuelling) starting with a sub-criticality level of -3000 pcm far each analysed geometry. Furthermore the main reactivity coefficients, necessary far the dynamic reactor analysis, have been also examined.
Preliminary Evaluation of the ETD I EFIT Neutronic Performances with Deterministic Methods
Sarotto, M.
2005-10-28
Abstract
This work has been carried out within the framework of the EUROTRANS project. A detailed neutronic analysis of a 300 MWth sub-critical lead cooled reactor, loaded with a large amount of minor actinides and modelled similarly to the 80 MWth LBE PDS-XADS far what concerns the geometrical shape and structural materials, has been performed by means of deterministic methods (with a special procedure .MECONG that makes usa of some ERANOS modules). The fuel isotopic composition, U-free oxide inserted in a MgO matrix (50% volume), has been provided by CEA. Adopting the PDS-XADS fuel cell geometry as reference, the main purpose of this work is to evaluate the influence of the fuel pin diameter (and the corresponding enrichment in Plutonium) on the care performances. In particular, the capability of these systems to burn and transmute minor actinides has been verified by means of burn up calculations (for about five years without refuelling) starting with a sub-criticality level of -3000 pcm far each analysed geometry. Furthermore the main reactivity coefficients, necessary far the dynamic reactor analysis, have been also examined.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
