In order to demonstrate the safety of the 80 MWth LBE-cooled XADS design concept an extensive dynamic transient analysis was performed in the framework of the European research program PDS-XADS.A wide set of enveloping plant-specific transient initiators was selected to assess the intrinsic safety characteristics of the sub-critical core and to demonstrate the safety margins of the systems design. Some of them are characterized by a very low probability of occurrence (on the verge of credibility) in order to intentionally challenge the limits of the design.The transient analysis was performed by means of the neutronic thermal-hydraulic coupled code RELAP5/PARCS modified to analyse this kind of plants.This paper deals with the representative results of the transient analysed. It also provide a description of the numerical models developed for the XADS (code modifications, plant nodalization).
Accident Analysis of an Experimental Accelerator Driven System
Meloni, P.;
2005-05-16
Abstract
In order to demonstrate the safety of the 80 MWth LBE-cooled XADS design concept an extensive dynamic transient analysis was performed in the framework of the European research program PDS-XADS.A wide set of enveloping plant-specific transient initiators was selected to assess the intrinsic safety characteristics of the sub-critical core and to demonstrate the safety margins of the systems design. Some of them are characterized by a very low probability of occurrence (on the verge of credibility) in order to intentionally challenge the limits of the design.The transient analysis was performed by means of the neutronic thermal-hydraulic coupled code RELAP5/PARCS modified to analyse this kind of plants.This paper deals with the representative results of the transient analysed. It also provide a description of the numerical models developed for the XADS (code modifications, plant nodalization).I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
