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Title: Method and apparatus for inspecting conduits

An apparatus and method for ultrasonic inspection of a conduit are provided. The method involves directing a first ultrasonic pulse at a particular area of the conduit at a first angle, receiving the reflected sound from the first ultrasonic pulse, substantially simultaneously or subsequently in very close time proximity directing a second ultrasonic pulse at said area of the conduit from a substantially different angle than said first angle, receiving the reflected sound from the second ultrasonic pulse, and comparing the received sounds to determine if there is a defect in that area of the conduit. The apparatus of the invention is suitable for carrying out the above-described method. The method and apparatus of the present invention provide the ability to distinguish between sounds reflected by defects in a conduit and sounds reflected by harmless deposits associated with the conduit.
 [1];  [2]
  1. (Venetia, PA)
  2. (McMurray, PA)
Issue Date:
OSTI Identifier:
United States of America as represented by United States (Washington, DC) OSTI
Patent Number(s):
US 5591912
Country of Publication:
United States
method; apparatus; inspecting; conduits; ultrasonic; inspection; conduit; provided; involves; directing; pulse; particular; angle; receiving; reflected; sound; substantially; simultaneously; subsequently; close; time; proximity; comparing; received; sounds; determine; defect; suitable; carrying; above-described; provide; ability; distinguish; defects; harmless; deposits; associated; involves directing; ultrasonic pulse; ultrasonic inspection; substantially simultaneously; method involves; method involve; substantially simultaneous; /73/