Méthode d'étude de la rupture de tuyauterie vapeur à puissance nominale

This report presents a preliminary development of a methodology for Steam Line Break accident (SLB) at full power. In particular, this study is a first part of a methodology concerning the SLB inside the containment building for 1300 MWe reactors. Sensitivity analyses are mainly made on two parameters characterizing the reactor at the initial moment of the accident: axial power distribution and positioning of the group R. For every SPA, the evaluation of minimum RFTC and maximum PLIN is calculated. A penalizing initial configuration of the core is found.