Assembling apparatus for nuclear fuel assembly

Details Assembling apparatus for nuclear fuel assembly Assembling apparatus for nuclear fuel assembly

1992-10-16

1994-04-05

Walsh, Donald P.

Induced nuclear reactions: processes, systems, and elements

Handling of fission reactor component structure within...

Fuel component

376269, G21C 1900

Patent

active

053012143

ABSTRACT:
The present invention relates to a pull-in rod type loader for loading fuel rods efficiently and conveniently from a fuel rod magazine to a fuel assembly. The control rod pipes and fuel rods are held in assigned grid cells, respectively termed pipe-cells and fuel-rod-cells, in each quadrant section of a grid. The control rod pipes are disposed in a quadrant so that the locations of the pipe-cells assigned for the guide pipes in one quadrant are symmetrical with respect to a central rotational axis of the apparatus. The grid cells and the pull-in loader are both aligned with respect to a central rotational axis. To load the fuel rods into the fuel assembly, only the pull-in rods need to be operated for every 90 degree rotation of the loader about the central axis, because the locations of the pull-in rods correspond exactly with the grid cells assigned to hold fuel rods. This type of loader does not require complex switching devices required in the conventional pull-in rod type of loaders, and the assembling operation can be carried out efficiently and quickly.

REFERENCES:
patent: 4558982 (1985-12-01), Oakley et al.
patent: 4625396 (1986-12-01), Ahmed et al.
patent: 4649632 (1987-03-01), Schoenig, Jr. et al.
patent: 4687245 (1987-08-01), Formanek
patent: 4747997 (1988-03-01), Boatwright
patent: 5068081 (1991-11-01), Oyama et al.

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