Ultrasonic Testing Couplant Types
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Questions and Answers

What should be done when the previous thickness measurement report is not available?

  • Take at least three measurement points where corrosion is most present.
  • Consult the client representative for specific instructions on thickness measurement.
  • Use the general average thickness of nine points as reference to the original thickness.
  • Select at least three locations to measure thickness without considering corrosion. (correct)

    • What is the correct way to ensure proper sound coupling when using the probe for thickness measurement?

  • Avoid using any couplant on the surfaces as it can affect the readings.
  • Press the probe lightly against the test surface to avoid any damage.
  • Keep changing the orientation of the probe during measurement for accurate results.
  • Ensure the probe is pressed firmly against the test surface for proper sound coupling. (correct)

    • What should be aligned perpendicular to the centre axis of tubular or curved product surfaces during thickness measurement?

  • Groove direction
  • Probe tip
  • Transducer
  • Sound barrier material (correct)

    • What is a recommended step before conducting wall thickness scanning?

    <p>Apply couplant on the surfaces to be scanned.</p> Signup and view all the answers

    How should the technician set up the cross-talk barrier in relation to the groove direction during ultrasonic thickness measurements?

    <p>Place it perpendicular to the groove direction.</p> Signup and view all the answers

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