Source Term Characterization of HANARO spent fuel for disposal system design

Source term characterization for domestic spent fuels has been carried out in a project, 'Development of a Korean Reference disposal System(A-KRS) for the HLW from Advanced Fuel cycles', to propose a high level waste repository accommodating all domestic spent fuels. The domestic spent fuels includes PWR spent fuels, PHWR spent fuels, and HANARO(research reactor) spent fuels. The key input parameters for spent nuclear fuels are total inventory, radioactivity, and decay heat. In this report, a inventory of spent fuels to be generated during entire life-time of HANARO reactor was estimated. Radioactivity and decay heat from HANARO spent fuels were also evaluated by using ORIGEN-ARP. It was expected that about 2 tons of spent fuels would be generated by the time of saturation of storage pool. In case that a capacity of storage pool is extended, about 3 tons of spent fuels were expected. It also revealed that the decay heat of HANARO spent fuel is higher than that of PWR or CANDU spent fuels. It is expected that the source terms calculated in this report would be very useful in the design of disposal system accommodating the HANARO spent fuel