The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 05, 1994
Filed:
Feb. 18, 1993
Hans Haller, Mannheim, DE;
ABB Reaktor GmbH, Mannheim, DE;
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.