PIE Results for UO Sphere-Pac Fuels Irradiated with Pellet Type Fuels in Gsgen-PWR and HBWR -IFA-550.11 Irradiation Test-

Morihira, Masayuki 

Comparative irradiation tests between sphere-pac fuel (SPF) and pellet type fuel (PF) were performed in the frame work among PSI (Paul Scherrer Institut) in Switzerland, Siemens Ltd in Germany and Swiss KKG (Kernkraftwerk Gsgen).Those fuel pins were irradiated in Gsgen-PWR for four cycles up to 40 GWd/tU. One SPF and one PF segment were taken out from the one cycle irradiation pin and the three cycle pin respectively. Those four segments were cut and re-instrumented on-line pressure tranducers subsequently applied to the ramp test in the Halden-BWR. This report describes the PIE result of rod S04 (SPF) and N06 (PF) which were applied to the ramp test after the three cycle base irradiation. It bases on the PIE reports by IFE/Kjeller and analysis reports by PSI.