Outlet plug for recirculation loop of nuclear reactor

Details Outlet plug for recirculation loop of nuclear reactor Outlet plug for recirculation loop of nuclear reactor

1982-03-10

1985-10-22

Cangialosi, Sal

Induced nuclear reactions: processes, systems, and elements

Seal arrangements

For nozzle

376260, 376281, G21C 1904, G21C 1920

Patent

active

045487839

ABSTRACT:
A stopper apparatus for use in blocking the unvalved nozzle of a cooling fluid filled nuclear reactor pressure vessel includes a plug, typically in the shape of a frusto-conical member having inflatable gaskets for sealing against a seat of generally unknown surface characteristics and means for positioning and urging the plug into position to seal the nozzle. The plug is typically positioned by suspension cables whereby the apparatus can be temporarily inserted and removed from the pressure vessel. The urging means is generally a two-way hydraulically driven jack controlled by remotely-actuated hydarulic lines. The apparatus is a tool which permits temporary sealing of a submerged outlet in a reactor vessel to permit maintenance on a fluid recirculation loop.

REFERENCES:
patent: 4077837 (1978-03-01), Schabert et al.
patent: 4393899 (1983-07-01), Tsuji et al.
patent: 4436692 (1984-03-01), Stenabaugh

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