Method for maintenance of ice beds of ice condenser containment

Details Method for maintenance of ice beds of ice condenser containment Method for maintenance of ice beds of ice condenser containment

1986-02-07

1987-06-09

Kyle, Deborah L.

Induced nuclear reactions: processes, systems, and elements

Handling of fission reactor component structure within...

376284, 175 18, 408 9, 408 1R, 62 67, 62344, G21C 900, G21C 1300

Patent

active

046719202

ABSTRACT:
A tool for maintaining ice baskets associated with a nuclear reactor system. The frame of the tool includes a platform which is disposed on a lattice support structure surrounding a selected and isolated basket. The tool includes an electric drill mounted for vertical reciprocation, in parallel axial relationship with the ice basket, and plural, selectively connectable auger shaft sections having a continuous helical fin thereabout which are connected in succession between the drill and a rotary drill bit, for drilling a hole of the required length, down through the ice within the ice basket. The drill then is maintained at an upper, vertically fixed position and a funnel positioned about the auger; ice chips or flakes are fed into the funnel while the drill is driven in reverse rotation, the auger conveying the ice to the bottom of the ice basket for filling lowermost voids and for filling successively higher voids as the auger is withdrawn. Clamping means are provided for clamping the protruding end of an auger section, during both the assembly of a successive auger section thereto and the disassembly of a successive auger section therefrom.

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patent: 4399876 (1983-08-01), Tienari
patent: 4559806 (1985-12-01), Schwab

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