Core barrel plug
US4576778A · kind A · utility
25Cited by
10References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 17, 1983 |
| Grant date | Mar 18, 1986 |
| Priority date | — |
| Expiry date | Aug 17, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E30/30
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The invention comprises a core barrel plug capable of being remotely installed in a port of a core barrel of a pressurized water nuclear reactor for converting the reactor from a by-pass downflow configuration to a by-pass upflow configuration. The plug comprises a body having an expandable cylindrical portion with a movable mandrel disposed in the body. Remote fluid pressurization causes the mandrel to be advanced thus expanding the body into contact with the port. The plug also comprises a locking mechanism to prevent inadvertent release of the plug and a venting mechanism to prevent inadvertent overpressurization of the plug.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.