Internal pump for nuclear reactor

Details Internal pump for nuclear reactor Internal pump for nuclear reactor

1989-01-18

1991-04-23

Hunt, Brooks H.

Induced nuclear reactions: processes, systems, and elements

Fission reactor material treatment

Impurity removal

376370, 376377, 376402, G21C 1942

Patent

active

050098381

ABSTRACT:
A nuclear reactor internal pump has a pump shaft connected to a motor and rotatably passing through the bottom of a nuclear reactor pressure vessel, an impeller fitted to a front end portion of the pump shaft, a diffuser disposed on the downstream side of the impeller and having an inner cylinder fixed to the bottom of the reactor pressure vessel to surround the pump shaft, a purge water passage defined between the pump shaft and the inner cylinder to communicate with the inside of the reactor pressure vessel and a purge water supply device for supplying purge water to reactor pressure vessel through the passage. Further, the nuclear reactor internal pump comprises a clad dropping preventive device for trapping clad coming from the reactor pressure vessel in the passage to prevent the clad from dropping.

REFERENCES:
patent: 4024911 (1977-05-01), Forrest et al.
patent: 4859401 (1989-08-01), Murase et al.
patent: 4879087 (1989-11-01), Akiyama et al.

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