The preliminary performance analysis of the metal fuel for the lead cooled critical transmutation reactor

U-TRU-Zr metallic fuel is being considered as a transmutation fuel for a lead-cooled critical system in Korea. MACSIS-H for a metal fuel is being developed as a steady-state performance computer code. The fuel temperature distribution was analyzed by the MACSIS-H code. The constituent migration subroutine has been developed and installed into the MACSIS-H code to simulate the constituent redistribution. The He production rates calculated by the other code were inserted into the swelling/FGR routine of the code. The fission gas releases were predicted by the semi-theoretical models in MACSIS-H code. The thermal creep strain limits were analyzed according to the plenum-to-fuel ratio. The failure probabilities were estimated in terms of a CDF, based upon the Weibull statistical failure model. The preliminary study for developing the axial expansion model during the transient state conditions was introduced. (author)