Method of manufacturing a grid having calibrated cells for a nuclear fuel assembly
US5211908A · kind A · utility
Assignees
Inventor
Key dates
| Filing date | Jul 24, 1991 |
| Grant date | May 18, 1993 |
| Priority date | — |
| Expiry date | Jul 24, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E30/30
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
There is provided a method of manufacturing a grid for a nuclear fuel assembly, the grid having at least two crossed sets of mutually parallel plates which define cells, some of which receive guide tubes and others receive fuel rods, the plates being provided with boss means for limiting the amount of movement available to the rods relative to the nodes of a regular array. The plates are formed with bosses projecting radially inwardly into each cell for receiving a fuel rod by such an amount that they define a passage having a size at least equal to a minimum diameter of the fuel rods. Then the bosses are deformed radially outwardly for imparting to each passage a predetermined radial size, slightly higher than that of one fuel rod and determined by a gauge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.