Alignment tool for spacers of nuclear reactor fuel assemblies

Details Alignment tool for spacers of nuclear reactor fuel assemblies Alignment tool for spacers of nuclear reactor fuel assemblies

1981-09-01

1984-01-24

Cangialosi, Sal

Induced nuclear reactions: processes, systems, and elements

Handling of fission reactor component structure within...

376262, 376446, 72458, G21C 334, B21J 1308

Patent

active

044276222

ABSTRACT:
Alignment tool for the remotely controlled recalibration of resilient protruding contact dimples or springs in substantially square spacer grid meshes of nuclear reactor fuel assemblies, including an outer centering tube adapted to the cross section of a spacer mesh and rigid and resilient contact dimples protruding into the interior of the mesh in given directions, the outer centering tube having a window formed therein in the vicinity of the contact dimple, a gripper-actuating tube being concentrically surrounded by and axially movable within the outer centering tube, a pendulum rod having a free end and being disposed in the interior of the gripper-actuating tube and being axially fixed relative to the gripper-actuating tube and able to oscillate in the given protrusion direction of the resilient contact dimple to be recalibrated, a gripper attached to the free end of the pendulum rod, a restoring spring for exerting pressure on the gripper, and a run-on incline formed on the pendulum rod being engageable with the gripper-actuating tube over and above the contact dimple for radial displacement of the gripper against the pressure of the restoring spring.

REFERENCES:
patent: 3892027 (1975-07-01), Jabsen
patent: 3894327 (1975-07-01), Jabsen
patent: 3982994 (1976-09-01), Jabsen
patent: 4175000 (1979-11-01), Jabsen
patent: 4208248 (1980-07-01), Jabsen
patent: 4292130 (1981-09-01), Viaud et al.

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