[2K15-18] Safety in Fuel Cycle

[2K15] Conceptual Syudy of Dry Storage Method for Spent Fuel Assemblies Based on Haneycomb Concrete Overpack(COP)

*Yoshio Hida¹, Yoshiaki Katsuyama², Shigeki Hayashi², Hirohide Hashimoto³, Takashi Murata⁴ (1. WATS, 2. Kanden Plant, 3. IHI Construction Materials, 4. Murata Engineering)

Keywords:dry storage method of spent fuel assemblies, intermediate storage facility

This dry storage method dose not require a building.A dry metal cask containing spent fuel assmblies is overpacked by a concrete shielding,the external shape of which is a hexagonal prism.The concrete overpacks are aligned side-by-side without gaps and placed on the ground to form the strong and earthquake resistant honeycomb structure.