Vessel for solidification treatment of radioactive waste pellets
US5140165A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | May 31, 1991 |
| Grant date | Aug 18, 1992 |
| Priority date | — |
| Expiry date | May 31, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S588/90
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A vessel for solidifying radioactive waste pellets includes a vessel body, an inner lid mounted within the vessel body and fixedly secured to an upper portion of the vessel body, and a device for preventing the pellets from floating fixedly secured one end thereof to the inner lid. The inner lid has an opening formed at a generally central portion thereof, and the pellet float prevention device is extended into the opening of the inner lid to define gaps therebetween allowing the passage of a solidifying material in the state of a liquid or a slurry therethrough but preventing the passage of the radioctive waste pellets therethrough. The pellet prevention device, when receiving a downward urging force, is bent downward to enlarge the gaps therebetween for allowing the radioactive waste pellets to pass therethrough. The pellet float prevention device is returned by a resilient restoring force to its initial position when the downward urging force is released. The pellet float prevention device comprises a plurality of coil springs fixedly secured to the inner lid in a radial manner, and some of the plurality of coil springs extend to an area close to the center of the opening in the…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.