Metal working – Plural diverse manufacturing apparatus including means for... – Binding or covering and cutting
Patent
1984-06-06
1988-01-26
Weidenfeld, Gil
Metal working
Plural diverse manufacturing apparatus including means for...
Binding or covering and cutting
29705, 29707, 29717, 29723, 376260, B23P 600
Patent
active
047208988
ABSTRACT:
The guide tube is disconnected and removed from the upper internals of the reactor to a work station in a pool of borated water. The work station includes a clamp-and-index tool, a metal-disintegration-machining (MDM) tool, pick-and-put tool, a brush tool, a nut hopper, a pin-insertion/torque tool, and a crimping tool. These tools are hydraulically operable. The clamp-and-index tool positions and, by repeated centering maintains the guide tube in precise position for removal and replacement of its split pins, the MDM burns through an old pin-and-nut assembly severing it into readily removeable fragments. This pin fragment is removed by an expeller on the clamp-and-index tool. This pick-and-put tool removes the burned nut fragment and replaces it with the new nut. The pin-insertion/torque tool inserts the new pin and torques the new nut onto the new pin. The crimping tool crimps a locking cap secured to the nut onto the pin. The tools are controlled from a command center external to the pool.
REFERENCES:
patent: 3213528 (1965-10-01), O'Donnell et al.
patent: 4265011 (1981-05-01), Lebouc
patent: 4526311 (1985-07-01), Schroder
patent: 4585613 (1986-04-01), Styskal et al.
"Dealing with Control Rod Guide Tube Support Pin Cracking in French PWRs", by Laurent Guicherd, Nuclear Engineering International, Nov. 1984, pp. 29-33.
Calfo Raymond M.
Castner Raymond P.
Dailey George F.
Diamond H.
Howell Daniel W.
Weidenfeld Gil
Westinghouse Electric Corp.
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