| 摘要 |
The device for testing the rods in a bundle insertable in the core of a nuclear reactor comprises a structure having means for slidingly guiding rods in m different orientations of the bundle, where m is a sub-multiple of the number n of rods in the bundle, and a measuring basket with n/m eddy current testing units (16) and n/m ultrasound scanners (18) situated on different guide tracks. Each ultrasound scanner (18) comprises a circular support surrounding a rod track and holding a ring of elementary transducers. The transducers are connected to a circuit for sequential excitation of the transducers in successive groups, which brings about the circumferential scanning of the tube and electronic focusing on the surface of the tube in movement on the track. |
