Some aspects of the PEC fast reactor aseismic design

The paper presents briefly the main features and the so far obtained results of the numerical and experimental studies carried out by the ENEA and ANSALDO/NIRA, in collaboration with ISMES and AGIP, for the seismic verification of the PEC fast reactor test facility. More precisely it refers to: 1) the numerical methods developed by ENEA in collaboration with the French Commissariat a l'Energie Atomique for the non-linear core seismic analysis; 2) the numerical procedure assessed by ENEA in collaboration with ANSALDO/NIRA for taking into account the strong effects of the PEC vessel-core dynamic interaction; 3) the dynamic tests carried out by ISMES on behalf of ENEA on core element prototype mock-ups (in both air and water simulating the sodium coolant); 4) the structural and functional verification fatigue and collapse experiments performed by AGIP on behalf of ENEA on the different core elements with seismic loadings; 5) the dynamic tests, performed by ISMES on behalf of ANSALDO/NIRA and in collaboration with ENEA (in air and water) on a full-scale mock-up of the shut-down system; 6) the-on site dynamic tests carried out by ISMES on behalf of ENEA for the reactor building