Permanent pool cavity seal for nuclear reactor

Details Permanent pool cavity seal for nuclear reactor Permanent pool cavity seal for nuclear reactor

1995-07-18

1997-05-27

Wasil, Daniel D.

Induced nuclear reactions: processes, systems, and elements

Seal arrangements

376205, G21C 13028

Patent

active

056339011

ABSTRACT:
A nuclear containment arrangement has a permanent pool cavity seal extending across an annular gap between a reactor pressure vessel and a refueling pool wall to provide a water tight seal therebetween. A seal plate has a support ring with a cylindrical section weldedly connected to an outer seal ring on an embedded ring. A J-shaped flexible ring attached to the seal plate allows axial and radial movement of the reactor vessel during thermal expansion and contraction. The inner portion of the seal plate overhangs the J-shaped flexible ring thereby to protect it from damage resulting from an object dropped thereon. Cooperating access holes and access hole covers in the seal plate provide access to the refueling pool cavity. Support arms underneath the seal plate are provided. Each support arm may have leveling screws to adjust the level of the seal plate. This provides a permanent pool cavity seal that permits flooding of the refueling pool for refueling with it only being necessary to remove the access hole covers for normal reactor operations.

REFERENCES:
patent: 4747993 (1988-05-01), Hankinson et al.
patent: 5102612 (1992-04-01), McDonald et al.
patent: 5230860 (1993-07-01), Behnke et al.
patent: 5272732 (1993-12-01), Chiang
patent: 5323427 (1994-06-01), Hankinson
patent: 5359632 (1994-10-01), Bottoms et al.
patent: 5434894 (1995-07-01), Chiang et al.

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