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Questions and Answers
What should be done when the previous thickness measurement report is not available?
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?
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?
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?
What is a recommended step before conducting wall thickness scanning?
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How should the technician set up the cross-talk barrier in relation to the groove direction during ultrasonic thickness measurements?
How should the technician set up the cross-talk barrier in relation to the groove direction during ultrasonic thickness measurements?
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