Device for checking clearance between the periphery of the upper

Details Device for checking clearance between the periphery of the upper Device for checking clearance between the periphery of the upper

1986-08-14

1988-05-24

Cangialosi, Salvatore

Induced nuclear reactions: processes, systems, and elements

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

376249, G21C 1700

Patent

active

047464860

ABSTRACT:
Device for checking clearance between the periphery of the upper core plate and the inner surface of the core enclosure of a pressurized water nuclear reactor comprising a vertical supporting structure (7) resting on the upper plate (3), a plurality of articulated assemblies (10), each carrying a calibrated feeler blade of a specified thickness, a pivoting assembly associated with each of the articulated assemblies, for moving the blades (9) in a substantially vertical direction towards the gap between the plate (3) and the enclosure (1, 2), or in the opposite direction, as well as a video camera (14) in the vicinity of the blades (9). The device enables the checking to be carried out under water and by remote control.

REFERENCES:
patent: 4196048 (1980-04-01), Qurnell et al.
patent: 4217173 (1980-08-01), Jabsen
patent: 4390496 (1983-06-01), Wozniak
patent: 4421715 (1983-12-01), Gunter et al.
patent: 4425298 (1984-01-01), Shields

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