Tool for installing hardware for radially supporting vertical re

Details Tool for installing hardware for radially supporting vertical re Tool for installing hardware for radially supporting vertical re

1995-09-22

1997-02-04

Wasil, Daniel D.

Induced nuclear reactions: processes, systems, and elements

Handling of fission reactor component structure within...

294 6722, G21C 1900

Patent

active

056006888

ABSTRACT:
A tool for installing a support member which must be rotated into a horizontal position in the downcomer annulus of a boiling water reactor by remote manipulation. The support member may, for example, be a midsupport for damping flow-induced vibrations in a vertical restraint tie rod. The tool includes a rigid holder for holding the support member and a threaded pivot for coupling with the threaded end of a cable. The pivot can swing relative to the holder between first and second angular positions separated by 90.degree.. The support member is held in the holder by a pair of channels formed on the holder and a set screw which threads in the holder and enters a bore formed in the support member. After the support member has been secured to the holder, the holder is coupled to the end of the cable via the pivot. The support member is lowered in the downcomer annulus in a vertical position. When the support member reaches the installation elevation, the support member is pivoted into a horizontal position for engagement with the tie rod. The tool is disengaged from the installed support member by remote manipulation of the set screw.

REFERENCES:
patent: 3219216 (1965-11-01), Pinaud
patent: 5402570 (1995-04-01), Weems et al.
patent: 5430779 (1995-07-01), Baversten et al.
patent: 5502754 (1996-03-01), Erbes

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