Advanced modelling and response surface method for physical models of level 2 PSA event tree
E. Raimond, R. Meignen, J. Dupas, D. Plet, B. Laurent, G. Nahas, B. Cirée,
CSNI/WG-Risk, Workshop level 2 PSA and severe accident management, Cologne, 29-31 mars 2004,
The paper presents the methodology used by the IRSN to establish the physical models of the Accident Progression Event Tree for level 2 PSA. The methodology supposes to realize intensive sensitivity studies to cover the situations calculated by the APET and the uncertainties. Three examples of application are proposed: ex-vessel steam explosion, direct containment heating and containment failure.