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Synthesis of analytical activities for direct containment heating



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Titre du congrès :ERMSAR 2007 2nd European Review Meeting on Severe Accident Research
Ville du congrès :Karlsruhe
Date du congrès :12/06/2007

Type de document > *Congrès/colloque

Mots clés > échauffement direct de l'enceinte, SARNET

Unité de recherche > IRSN/DSR/SAGR

Auteurs > BRETAULT Armelle, MEIGNEN Renaud, MIKASSER Siham, SPENGLER Claus

Date de publication > 14/06/2007


In the frame of SARNET, a joint analysis of comparison of lumped parameters code models and results was performed regarding the phenomena of Direct Containment Heating. The codes used were ASTEC (IRSN), MAAP (EDF) and CONTAIN (GRS). Focus was put on dispersal and thermal aspects and the EC-sponsored test DISCO-L1 (also FH-02), with a geometry representative of French P'4 reactors, was used. Results showed that the main characteristics of the test could be found only at the price of a hardly justified fitting of very important parameters (such as the geometry itself). Even the CONTAIN code, that can be considered by far as the most elaborate tool for this purpose could not provide adequate results without sensitive model fittings, which cannot currently be validated separately from each other. The present paper proposes a synthesis of this collaborative work.