Shroud support ultrasonic examination apparatus

Details Shroud support ultrasonic examination apparatus Shroud support ultrasonic examination apparatus

1998-05-29

1999-07-27

Wasil, Daniel D.

Induced nuclear reactions: processes, systems, and elements

Testing, sensing, measuring, or detecting a fission reactor...

Vessel monitoring or inspection

G21C 1701

Patent

active

059303166

ABSTRACT:
Methods and apparatus for examining a nuclear reactor shroud are described. In one embodiment the inspection apparatus includes an elongate tubular upper section, an elongate middle section, an elongate lower section, and a scanner arm assembly movably coupled to the middle section. The inspection apparatus is configured to be inserted into the reactor pressure vessel through one of the openings in the reactor core plate. The upper section includes a bail handle and an indexing ring having an alignment lug, a plurality of slots and a movable locking tab configured to engage the slots. The lower section includes a rotary bearing located at the bottom end. The lower section is configured to engage and rest on a control rod drive housing. The middle section includes a movable door and a movable traveler plate movably coupled to the scanner arm assembly. The scanner arm assembly includes a fixed track, a movable track, a scanner carriage, and a scanner array.

REFERENCES:
patent: 5295167 (1994-03-01), Burner
patent: 5787137 (1998-07-01), Nelson, III et al.

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