Minor actinides incineration by loading moderated targets in fast reactor

The effect of contained hydrogen and loaded mass of minor actinides (MAs) in the target on the core performance and MAs transmutation characteristic was analyzed. An optimum core was proposed which has MAs pin cells per assembly of 38 with the composition ratio U/MA/Zr/H of 1/4/10/50. This optimum core can offer good core characteristics and transmute MAs very effectively by about 67% (939kg) and incinerate (transmute by fission) MAs by about 35% (489kg) through 3 years of reactor operation. It is about 2-3 times larger than the current transmutation method which loads MAs homogeneously in the PWR and FR.