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Enhancing Nuclear Safety


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Synthesis of analytical activities for direct containment heating


Congress title :ERMSAR 2007 2nd European Review Meeting on Severe Accident Research
Congress location :Karsruhe
Congress date :16/06/2007

Document type > *Congrès/colloque

Keywords > direct containment heating, SARNET

Research Unit > IRSN/DSR/SAGR

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

Publication Date > 14/06/2007

Summary

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.

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