Weld failure detection

Details Weld failure detection Weld failure detection

1978-11-30

1981-03-31

Cangialosi, S. A.

G21C 1700

Patent

active

042591520

ABSTRACT:
Method and apparatus for detecting failure in a welded connection, particrly applicable to not readily accessible welds such as those joining components within the reactor vessel of a nuclear reactor system. A preselected 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 analyzer.

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Nuclear Technology, vol. 26 (8175), pp. 472-479, Strand et al.

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