| 摘要 |
PROBLEM TO BE SOLVED: To keep structural soundness of a canister, to provide safety for overturning evaluation, and to hold transportation stability, by preventing corrosion of a bottom face. SOLUTION: This concrete-made storage cask 10 is provided with a substantially cylindrical concrete vessel 12 with a lower end closed by a bottom part 12a, having in its inside a storage part 22 for storing a radioactive material storage canister 14 enclosing a radioactive material, and formed by concrete, and a lid 20 closing an upper end opening part 12b of the concrete vessel 12, and the cask 10 is installed on an installation face 60. A crevice corrosion preventive material 51 is provided in the bottom part 12a. COPYRIGHT: (C)2004,JPO
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