Vacuum system for nuclear reactor guide tube

Details Vacuum system for nuclear reactor guide tube Vacuum system for nuclear reactor guide tube

1990-09-10

1991-07-09

Hunt, Brooks H.

Induced nuclear reactions: processes, systems, and elements

Fission reactor material treatment

Impurity removal

15395, 154151, G21C 1932

Patent

active

050304100

ABSTRACT:
A vacuum system for cleaning the base of a control blade guide tube comprises a vacuum source and a novel vacuum head. The vacuum source includes a conventional vacuum pump and filter, for trapping matter entrained in water driven by the pump. The vacuum head is disk-shaped and has an off-axis vacuum port which can scan the guide tube base when the disk is rotated 360.degree.. Elongated slots in the disk admit water down through the disk. Guide fins separate the slots from the vacuum port. The guide fins are shaped to provide a clearance over the guide tube base, effecting a highventuri action which helps sweep up debris on the guide tube base. An annular ridge on the disk surrounds a similar annular ridge on the base, isolating a control rod drive tube housing below the base from the vacuum. This prevents control rod drive components from being disturbed by the vacuum.

REFERENCES:
patent: 4610838 (1986-09-01), Gasparro et al.
patent: 4715324 (1987-12-01), Muller et al.
patent: 4867941 (1989-09-01), LeDantec
patent: 4959146 (1990-09-01), Kristan

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