Synthesis of analytical activities for direct containment heating
Titre du congrès :ERMSAR 2007 2nd European Review Meeting on Severe Accident Research
Ville du congrès :Karlsruhe
Date du congrès :12/06/2007
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.