초록

A method is disclosed for loading and sealing a double container for transport and storage of radioactive material in which an inner cover is screwed into the inner container while said inner container is in a hot cell, and welding a second cover on the inner container outside the hot cell.

대표청구항 ▼

In a method for loading and sealing a double container system provided for the transport and storage of radioactive material, which system has a removable inner container and an outer shielding container each of which is equipped with its own cover, comprising the steps of (a) placing said double co

In a method for loading and sealing a double container system provided for the transport and storage of radioactive material, which system has a removable inner container and an outer shielding container each of which is equipped with its own cover, comprising the steps of (a) placing said double container system in communication with a hot cell, (b) loading the inner container with radioactive material enclosed in a sheath, (c) closing said inner container with an inner cover while the double container system is in communication with said hot cell, (d) sealing the inner container and thereafter sealing the outer container with a shielding cover outside the hot cell, the improvement comprising the steps of locking the empty double container system within an injection aperture in the bottom of the hot cell, loading the inner container with the radioactive material through the injection aperture of the hot cell, screwing the inner cover into the inner container to provide an annular seal while the double container system is in the locked position, closing the injection aperture, unlocking the double container system containing the loaded and sealed inner container, removing said container system for the hot cell, and welding an outer cover onto the inner container over said inner container outside the hot cell before sealing the outer container with said shielding cover.