Theconsumption of nuclear fuel in the unit of ton natural uranium per GWe-year for several nuclear fuel cycleshas been performed. The selected nuclear fuel cycles in this study are the LWR (PWR and BWR) opencycle, the PHWR open cycle, DUPIC cycle and the fuel cycle that includes a breeder reactor. The valuesof fuel burn up, enrichment, thermal efficiencies and fuel process efficiencies are based on several reactoroperating data. The calculation results of the open cycles show the following:- The fuel consumptions of PWR and BWR are nearly the same.- The new designs of PWR and BWR consumpt less fuel than the old designs of PWR and BWR.- The fuel consumption of CANDU reactor is less than the fuel consumption of PWR and BWR for botholed designs and new designs.- The using od slight enriched uranium decreases the fuel consumption of CANDU reactor due to thesignificant increasing of burn up.- The increasing of burn up and thermal efficiency will decreases the fuel consumption.For two reactor fuel cycles, the calculation result shows the following:- The Max and DUPIC cycles are comparable in term of fuel saving and reducing of the amount ofwastes.- The DUPIC cycle has more significant role in term of of fuel saving and reducing of the amount ofwastes in the using of the old design of PWR dan BWR than in the using of the new design of PWR danBWR.- The MOX will have better performance by the using of LMFR as the second reactor.The conclusion is the fuel saving can be achieve by burn up increasing, thermal efficiencyincreasing and using two kind or more nuclear reactor in series.Kev words: nuclear fuel cycle, fuel consumption. Andang Widi Harto; Program Studi Teknik Nuklir, Jurusan Teknik Fisika, Fakultas Teknik UGM
