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).
Analisi sistemi e di sicurezza
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/20.500.12079/3396
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