Sliding lance guide flexible lance system

Details Sliding lance guide flexible lance system Sliding lance guide flexible lance system

B - Operations, Transporting

25

J

B25J 18/06 (2006.01) F22B 37/48 (2006.01) F28G 1/16 (2006.01) F28G 15/04 (2006.01) G21C 17/017 (2006.01)

Patent

CA 2074204

A sliding lance guide flexible lance system (10) is attached to a hand hole (12) of a nuclear power plant steam generator by means of flange (14) of tilt module (16). A rail (18) extends from the tilt module (16) to a support stand (20) and is attached to the stand (20) by a pivot (22) so that the rail (18) is free to rotate with the tilt module (16). A tilt drive motor (24) is attached to the tilt module (16). A flexible lance (26) extends into the rail (18) for extension through a lance guide shoe (27). The lance guide shoe (27) deflects the lance from the rail 18 into the tube gap of the steam generator. The lance guide shoe (27) is slideably mounted in the rail (18), and is attached to a lance guide belt (30), which extends within and along the rail 18. Similarly, the flexible lance 26 extends within and along the rail 18. A lance guide belt sprocket drive (40) is mounted an support (33) to engage the lance guide belt (30). A similar flexible lance sprocket drive (42) is mounted on the support (33) to engage the flexible lance (26).

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