Device for installing dry PDD lances and for flushing out lance-

Details Device for installing dry PDD lances and for flushing out lance- Device for installing dry PDD lances and for flushing out lance-

1986-08-08

1988-12-13

Kyle, Deborah L.

Induced nuclear reactions: processes, systems, and elements

Handling of fission reactor component structure within...

376245, 376316, G21C 1920

Patent

active

047909765

ABSTRACT:
Device for flushing out a lance-housing tube in a reactor pressure vessel of a boiling-water reactor and for aligning therein a dry LVD lance which partly protrudes with a pressure-tight lance passthrough from an end flange on the lance-housing tube of the reactor pressure vessel, includes a tubular housing surrounding from below a part of the lance protruding from the reactor pressure vessel and sealed by a lance protection tube, the tubular housing being fastenable to the end flange; and a piston arranged in the tubular housing underneath the sealed lance, the piston being vertically displaceable and rotatable.

REFERENCES:
patent: 3186915 (1965-06-01), Danieli et al.
patent: 4158600 (1979-06-01), Akimoto et al.
patent: 4518559 (1985-05-01), Fischer et al.
Nuclear Engineering International, vol. 29, No. 356, Jun. 1984, p. 35 and 36 ; "Cleaning the Thimble Guide Tubes at Bugey".

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