Abstract: Decontamination of refuel pool is a job in the heavy repair of nuclear power plant in order to protect repair men from radiation hurt. The character of pool decontaminating is analyzed and the deficiency for radiation protection is found. The optimization design of decontaminating refuel pool for radiation protection is showed in this paper, which make use of γ-ray image devices, wireless electronic personal dosimeters and other new type devices. The designed system can monitor the radioactivity distribution in the refuel pool and the situation of worker in real time. The radiation dose of worker will be controlled, and the risk ofradioactivity contamination will be reduced, and decontaminating efficiency will be increased.

Key words: Refuel pool, Decontamination, γ-ray image device, Wireless electronic personal dosimeter