Device for facilitating the insertion and withdrawal of fuel ass

Details Device for facilitating the insertion and withdrawal of fuel ass Device for facilitating the insertion and withdrawal of fuel ass

1974-01-02

1976-04-06

Feinberg, Samuel

214 18N, G21C 1920

Patent

active

039487237

ABSTRACT:
A device is provided which is installed in a reactor prior to carrying out refueling operations and which accurately locates and isolates a selected core location to permit rapid withdrawal and insertion of fuel subassemblies at that location. A shielded plug designed to cooperate with the refueling apparatus is inserted into an access port in the reactor head. A structural shroud extends down from the plug and carries at its lower end a radially floating, hexagonal spreader tube with mechanisms to rotate it for angular alignment purposes and a linear drive for inserting it into the core. The upper end of the spreader tube serves as a guide for leading the fuel handling apparatus into alignment with the chosen subassembly.

REFERENCES:
patent: 3044947 (1962-07-01), Payne
patent: 3073771 (1963-01-01), Moulin
patent: 3600277 (1971-08-01), Germer
patent: 3629062 (1971-12-01), Muenchow
patent: 3768668 (1973-10-01), Schukei

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