Apparatus for installing tie rod assembly in space between jet p

Details Apparatus for installing tie rod assembly in space between jet p Apparatus for installing tie rod assembly in space between jet p

1995-09-22

1997-07-08

Wasil, Daniel D.

Induced nuclear reactions: processes, systems, and elements

Handling of fission reactor component structure within...

193 42, 414146, 269 1, 254 93R, G21C 1900

Patent

active

056469691

ABSTRACT:
A tool for protecting a boiling water reactor component against damage by a shroud repair assembly suspended from a cable and lowered into the downcomer annulus. The tool has a roller with an outer surface made of a material which will not scratch the surface of a tie rod of the shroud repair assembly as the latter is lowered relative to the roller. The tool has sets of opposing grippers made of aluminum alloy which are pressed against opposing surfaces of the shroud and the reactor pressure vessel with sufficient force to clamp the tool in the annulus. The pressing force is generated by air-actuated cylinders which are actuated remotely. In one embodiment, the roller is fixed and acts as a stop to limit tangential travel of the suspended assembly. In another embodiment, the roller is displaceable in a tangential direction in response to remote actuation of a pair of air-actuated positioning cylinders. The roller is displaced to push the contacting portion of the shroud repair assembly in a tangential direction, e.g., to a position where the suspended assembly will avoid a reactor component upon further lowering of the assembly.

REFERENCES:
patent: 939452 (1909-11-01), Stocking
patent: 1845312 (1932-02-01), McEwen
patent: 4436692 (1984-03-01), Stenabaugh
patent: 4645071 (1987-02-01), Faulkner et al.
patent: 4783053 (1988-11-01), Virmiyahu et al.
patent: 5044061 (1991-09-01), Kramer

Affiliated with

Also associated with

Rating

Apparatus for installing tie rod assembly in space between jet p does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus for installing tie rod assembly in space between jet p, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for installing tie rod assembly in space between jet p will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2413139