Boiling water reactor core shroud head bolt retainer tool
US9393680B2 · kind B2 · utility
2Cited by
18References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 28, 2015 |
| Grant date | Jul 19, 2016 |
| Priority date | — |
| Expiry date | Aug 8, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/531
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The inventive tool is designed to ensure proper plant operation position of the core shroud head bolt assemblies of a boiling water nuclear reactor. The tool exerts an upward pulling force on stuck retainers to return them to the locking position around the nut. The tool includes a frame, an engagement member, and a collar. The engagement member is lowered toward and end of the bolt until it comes into contact therewith. Further movement of the engagement member causes the frame and collar to move upward, lifting the retainer and extending the spring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.