Facing the problem of saturation of spent nuclear fuel (SNF) stored in temporary storage facilities on sites, interest in the treatment of SNF is increasing, and it is recognized as a task that needs to be solved promptly. Although direct disposal is a general method for dealing with SNF, the entire fuel assembly is classified as high-level waste; thus, the burden of disposal is high. In order to minimize the disposal burden with enhancing safety for long term storage, it is necessary to develop SNF treatment technologies and continuous efforts are required from a national policy perspective. The present study focused on minimizing the volume of high level waste from light water reactor fuel by separation of uranium, which accounts for most of SNF. The chlorination characteristics of uranium (U), rare earth (RE) oxides were confirmed through lab-scale experiments, and the possibility of uranium separation from U-RE simulated fuel was evaluated using NH4Cl chlorinating agent. The detailed results will be posted and discussed.

• Dalsung Yoon(Korea Atomic Energy Research Institute,111, Daedeok-daero 989 beon-gil, Yuseong-gu, Daejeon) Corresponding author
• Seungwoo Paek(Korea Atomic Energy Research Institute,111, Daedeok-daero 989 beon-gil, Yuseong-gu, Daejeon)
• Changhwa Lee(Korea Atomic Energy Research Institute,111, Daedeok-daero 989 beon-gil, Yuseong-gu, Daejeon)