| 摘要 |
PROBLEM TO BE SOLVED: To improve the screening performance without degrading the cooling performance in a radioactive substance dry storage facility. SOLUTION: This radioactive substance dry storage facility 1 is a facility for storing a radioactive waste glass solidified body and it has a concrete building. In the inside thereof, radioactive substances 2 are stored, and it is provided with a storeroom 3 storing the radioactive substances with an outer wall screening radiation, an air inflow port 4 taking in cooling air for the radioactive substances, and an exhaust port 5 exhausting the cooled air. Screens 6 for screening the radioactive substances are positioned upstream and downstream in respect to a flow 7 of air. The screens are columnar structures. The columnar structures are positioned so that no containers incorporating the radioactive substances can be directly seen from any place nearer to the air ports than an area where the columnar structures are positioned. Radiation radiated from the radioactive substances and heading for air inflow and outflow parts can be screened by the screens. Thus, radiation dose heading for an opening part of the facility can be reduced.
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