Ultrasonic flaw detector device

Details Ultrasonic flaw detector device Ultrasonic flaw detector device

G - Physics

01

N

349/42

G01N 29/04 (2006.01) G01N 29/265 (2006.01) G21C 17/00 (2006.01) G21C 17/007 (2006.01)

Patent

CA 1177573

ABSTRACT OF THE DISCLOSURE A ultrasonic flaw detector device including axial and circumferential fixed tracks located in a space defined between a pressure vessel of a nuclear reactor and a heat insulating wall surrounding the vessel and arranged axially and circumferentially respectively of the pressure vessel of the nuclear reactor. A rotary track is located at a junction of the axial fixed track and the circumferential fixed track and moved in rotary movement by a chain and has its angle of rotation restricted by a pair of stoppers. A carrier member supporting a ultrasonic probe is moved on the tracks to effect ultrasonic flaw detection to detect any flow that might be present in the pressure vessel. To transfer the carrier member from the axial fixed track to the circumferential fixed track, the carrier member is first transferred from the axial fixed track to the rotatable track, and after the rotary track is rotated, the carrier member is transferred from the rotatable track to the circumferential fixed track.

381039

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