Weld failure detection

Details Weld failure detection Weld failure detection

G - Physics

01

M

116/66.1

G01M 3/00 (2006.01) G01M 3/22 (2006.01) G21C 17/00 (2006.01)

Patent

CA 1131077

48,112 ABSTRACT OF THE DISCLOSURE Method and apparatus for detecting failure in a welded connection, particularly applicable to not readily accessible welds such as those joining components within the reactor vessel of a nuclear reactor system. A pre- selected tag gas is sealed within a chamber which extends through selected portions of the base metal and weld deposit. In the event of a failure, such as development of a crack extending from the chamber to an outer surface, the tag gas is released. The environment about the welded area is directed to an analyzer which, in the event of presence of the tag gas, evidences the failure. A trigger gas can be included with the tag gas to actuate the analy- zer.

330928

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