RADIOACTIVE MATERIAL CONTAINMENT VESSEL AND RADIOACTIVE MATERIAL CONTAINMENT VESSEL STORAGE FACILITY

摘要

PPROBLEM TO BE SOLVED: To reduce the cost of constructing a storage facility by calculating the thickness needed for a shield member of the storage facility by use of neutron and gamma doses on the surface of a radioactive material containment vessel. PSOLUTION: The thickness of the ceiling or sidewall of a storage building is calculated using neutron and gamma doses on the surface of the radioactive material containment vessel so that dose rates at the boundary of the site of the storage building are not more than limit values and so that the thickness of the shield member shielding radiation from the surface of the radioactive material containment vessel is small for the outside of the storage building. The storing building is constructed using the result of the calculation. Because the thickness of the shield member of the storage building is determined while taking into consideration the neutron and gamma doses on the surface of the radioactive material containment vessel, the thickness of the shield member can be optimized compared with conventional methods and the cost of constructing the storage facility can be reduced. PCOPYRIGHT: (C)2003,JPO