B - Operations – Transporting – 23 – P
Patent
B - Operations, Transporting
23
P
26/155
B23P 19/02 (2006.01) B23P 6/00 (2006.01) B23P 17/00 (2006.01) F22B 37/00 (2006.01)
Patent
CA 1264110
ABSTRACT OF THE DISCLOSURE A tool for processing the damaged tubes of a steam generator either to prepare the tubes for insertion of a sleeve, or to insert a sleeve, or to treat the sleeve after it is inserted, for example a drilling tool for drilling out plugs, a sleeving tool for inserting sleeves in the tubes, a high-roller tool for rolling the sleeves at their upper end where they have been expanded, or a low- roller tool for rolling the sleeves at their lower ends in the tube sheet, is suspended in the processing position by means of locking pins which engage tubes adjacent to a tube to be processed. The locking pins are driven into the adjacent tubes at a low velocity by a piston in a hydraulic cylinder under low pressure so that they are properly seated. Once seated, the pins are held by high pressure so that they resist the reactive forces of the processing.
464411
Cooper Frank W. Jr.
Howard Bruce A.
Snyder David A.
Cooper Frank W. Jr.
Howard Bruce A.
Oldham And Company
Snyder David A.
Westinghouse Electric Corporation
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