1. Introduction
2. Methods and Results
    2.1 Actual survey of spent fuel assembly
    2.2 Evaluation of the irradiated guide tubes
    2.3 Design of the repair components
3. Conclusions

• Hyoungmun Kwon(Korea Atomic Energy Research Institute, 111, Daedeok-daero 989, Yuseong-gu, Daejeon, Korea)
• Inchan Kwon(Korea Atomic Energy Research Institute, 111, Daedeok-daero 989, Yuseong-gu, Daejeon, Korea)
• Sukwoo Hong(Korea Atomic Energy Research Institute, 111, Daedeok-daero 989, Yuseong-gu, Daejeon, Korea)
• Myungchul Park(Korea Atomic Energy Research Institute, 111, Daedeok-daero 989, Yuseong-gu, Daejeon, Korea)