Apparatus for removing and installing a recirculation pump in a

Induced nuclear reactions: processes – systems – and elements – Reactor structures – Circulating fluid within reactor

Patent

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Details

376271, 376272, G21C 1928

Patent

active

055770843

ABSTRACT:
An apparatus for removing and installing a reactor component, such as a circulating pump, by remote operation. The apparatus includes a handling mechanism for transporting various interchangeable containers and tools along a path between a position on top of the suppression pool and a position overlying the reactor component. The handling mechanism has a yoke assembly adapted to receive and support the trunnions of any container or tool, lifting screws for raising and lowering the yoke assembly and an arcuate rack mounted on the shield wall for rotating the yoke assembly around the circumference of the shield wall. A transition collar is latched onto the pump pressure housing. The transition collar has a valve at the top for closing off its interior. Seals arranged between the transition collar and pressure housing to ensure water-tightness. A quick disconnect flange is provided to facilitate coupling of an upper flange on the transition collar to a flange of the interchangeable container or tool carried by the handling mechanism.

REFERENCES:
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patent: 3765549 (1973-10-01), Jones
patent: 3945509 (1976-03-01), Weems
patent: 3980188 (1976-09-01), Weems
patent: 3982134 (1976-09-01), Housholder
patent: 4445042 (1984-04-01), Baatz et al.
patent: 4456827 (1984-06-01), Botzem et al.
patent: 4555129 (1985-11-01), Davlin
patent: 4926046 (1990-05-01), Roy et al.
patent: 5406600 (1995-04-01), Jones et al.
patent: 5475721 (1995-12-01), Baatz et al.

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