Process and device for the remote underwater monitoring of a small-size component of a nuclear reactor
US4717530A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 10, 1986 |
| Grant date | Jan 5, 1988 |
| Priority date | — |
| Expiry date | Feb 10, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E30/30
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The process involves introducing into the structure (1) immersed in water, in the vicinity of the component (9) to be monitored, a means (30) of injecting water at a pressure higher than 40 MPa and in the form of a straight jet of a diameter less than 3.times.10.sup.-3 m. The injection means (30) is subsequently directed towards the component (9) to be monitored, and water is injected under pressure in such a way that the jet reaches the component (9). The position of the component after the action of the jet is monitored by a televisual means. When the pins of a guide tube (1) are to be monitored, the device also has, in addition to the televisual inspection means, a very long tube (30), in which an injection device having a nozzle in its lower part is arranged.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.