Removal of obstructions in thimbles of nuclear power reactors

Details Removal of obstructions in thimbles of nuclear power reactors Removal of obstructions in thimbles of nuclear power reactors

1989-09-28

1990-09-18

Wasil, Daniel D.

Induced nuclear reactions: processes, systems, and elements

Fission reactor material treatment

Impurity removal

G21C 1900

Patent

active

049576941

ABSTRACT:
In the operation of a power reactor having a pressure bessel (2) containing a core and a plurality of thimbles extending into the core to provide passages for a flux detector, a movable support member (12) located outside of the pressure vessel (2) and carrying a plurality of tubular members (10) each detachably connected to a respective thimble, and a transfer unit (20) normally coupled to the tubular members (10) for introducing a flux detector into a selected thimble via a respective tubular member (10), obstructions are removed from a selected thimble while the reactor remains in operation, by the steps of:

REFERENCES:
patent: 4610838 (1986-09-01), Gasparro et al.
patent: 4720369 (1988-01-01), Cadaureille et al.
patent: 4790976 (1988-12-01), Zahn et al.
patent: 4867941 (1989-09-01), Le Dantec

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