Device for checking the disconnexion of the control clusters of a nuclear reactor
US4585612A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 6, 1983 |
| Grant date | Apr 29, 1986 |
| Priority date | — |
| Expiry date | Jun 6, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S294/906
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The subject of the invention is a device for checking the disconnexion of the actuating rods of the control clusters before the removal of the internal equipment of a nuclear reactor, comprising, within a pit (10) forming a cooling pond, a vessel (1) closed by a removable cover and containing the core and a set of control clusters fitted slidably in the upper internal equipment forming a guide structure above the core, each cluster being fixed to the lower part (32) of an actuating rod (3) capable of being detached from the corresponding cluster, after opening the cover, by means of a disconnecting tool suspended from a charging crane (2) transportable above the cooling pond (10). The checking device according to the invention comprises a pole (4) of greater length than the distance between the platform and the level of the heads of the actuating rods, fitted at its upper part with means (44) for suspending and actuating the rotation of the pole about its vertical axis, and at its lower part with a bushing (5) for centering at a given level on the head of the actuating rod (3) and with an arm (7) extending transversely to the horizontal at the level of the heads (39) of the disconn…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.