Method and device for replacing neutron absorber rods
US4683107A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 15, 1984 |
| Grant date | Jul 28, 1987 |
| Priority date | — |
| Expiry date | Oct 15, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/531
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Neutron absorber rods are mounted with their upper ends in bores formed in a mounting device and the absorber rods are movable within guide tubes of a nuclear reactor fuel assembly. A holding device is firmly attached to a fixed location of the storage pit. The holding device has holder tubes for absorber rods. In order to replace the absorber rods, the mounting device with the neutron absorber rods is placed and locked in the holding device, the mounting device is disconnected from at least one neutron absorber rod to be replaced, the mounting device with any neutron absorber rods still attached to it is removed from the holding device, the disconnected neutron absorber rods remaining in holder tubes of the holding device are removed for storage, new neutron absorber rods are placed in the empty holder tubes and the mounting device with any neutron absorber rods still connected to it are placed in the holding device and the mounting device is connected to the new neutron absorber rods. A device is also provided to carry out the method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.