Atomic Energy Society of Japan

To prevent subsidence in a radioactive waste burial site, it is crucial to eliminate any harmful voids. To address this, a method utilizing a large shaking table to fill the voids in the container with sand has been developed.However, decommissioning facilities face constraints on installation space, making the use of a large shaking table challenging. Consequently, a portable sand filling device was developed, and both small-scale tests with a compact container and full-scale tests using a 200L drum were conducted.The test results confirmed a sand filling rate of 80% or more, indicating the feasibility of sand filling with the portable device.