Method and device for nondestructive testing of a penetration of

Details Method and device for nondestructive testing of a penetration of Method and device for nondestructive testing of a penetration of

1993-02-18

1994-07-05

Snow, Walter E.

Electricity: measuring and testing

Magnetic

Magnetic sensor within material

324238, 324262, 376249, G01N 2782, G01N 2772, G01R 3300, G21C 1700

Patent

active

053270800

ABSTRACT:
Previously when testing a connector penetration of a reactor pressure vessel lid, one assumed that an annular gap between the connector and the sleeve was concentric. However, tests have shown that in some lid structures a deflection of the connector took place after cooling to room temperature, which led to an eccentric configuration of the sleeve and the connector. In order to be able to completely test such annular gaps, a method and device for nondestructive testing of a penetration of a reactor pressure vessel lid according to the invention includes displacing the sleeve with the help of a thrust piece, until an accessible annular gap is reached. A sensor then arrives at the annular gap through a recess in the thrust piece.

REFERENCES:
patent: 4757258 (1988-07-01), Kelly, Jr. et al.

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