Device for extracting a blocking sleeve from a removable guide tube of a fuel assembly of a nuclear reactor
US5120492A · kind A · utility
6Cited by
4References
8Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Sep 19, 1989 |
| Grant date | Jun 9, 1992 |
| Priority date | — |
| Expiry date | Sep 19, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/53843
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The device comprises a pole fastened to a handling and lifting apparatus arranged above the pool in which the fuel assembly is placed under water. The pole has at least one lower end part (32), the diameter of which is less than the inside diameter of the blocking sleeve (25). This part (32) is pierced with a central bore (40) and with at least two radial orifices (56), in each of which is located a retention claw (57). A rod (41) sliding in the axial bore (40) makes it possible to control the extraction of the claws. The vertical movement of the pole makes it possible to extract the blocking sleeve (25).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.