skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Weld failure detection

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.

Inventors:
 [1];  [2]
  1. Unity Township, Westmoreland County, PA
  2. (Mt. Lebanon, PA)
Issue Date:
Research Org.:
Westinghouse Electric Corp., Pittsburgh, PA (United States)
OSTI Identifier:
863844
Patent Number(s):
4259152
Assignee:
United States of America as represented by Department of Energy (Washington, DC)
Patent Classifications (CPCs):
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
G - PHYSICS G01 - MEASURING G01M - TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES
DOE Contract Number:  
EY-76-C-15-2395
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
weld; failure; detection; method; apparatus; detecting; welded; connection; particrly; applicable; readily; accessible; welds; joining; components; reactor; vessel; nuclear; preselected; tag; gas; sealed; chamber; extends; selected; portions; base; metal; deposit; event; crack; extending; outer; surface; released; environment; directed; analyzer; presence; evidences; trigger; included; actuate; detection method; reactor vessel; nuclear reactor; outer surface; base metal; tag gas; selected portion; selected portions; readily accessible; failure detection; weld deposit; accessible welds; /376/976/

Citation Formats

Pennell, William E, and Sutton, Jr., Harry G. Weld failure detection. United States: N. p., 1981. Web.
Pennell, William E, & Sutton, Jr., Harry G. Weld failure detection. United States.
Pennell, William E, and Sutton, Jr., Harry G. Thu . "Weld failure detection". United States. https://www.osti.gov/servlets/purl/863844.
@article{osti_863844,
title = {Weld failure detection},
author = {Pennell, William E and Sutton, Jr., Harry G.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1981},
month = {1}
}

Patent:

Save / Share: