Manual Ultrasonic-O Inspection

Manual Ultrasonic O

Manual ultrasonic testing straight-beam (UT-0°) services harness high-frequency mechanical energy, such as sound waves, to accurately detect wall thickness variations. This non-destructive evaluation (NDE) technique also can be used to detect and measure pits, laminations, and other internal metal loss anomalies.

All TDW technicians have transducers sized for small manual scanning projects, along with pencil probes that provide a “point” inspection of an area. The probes are useful for determining the remaining wall left in a pit or pitted area, which provides operators with information they can use to prioritize remediation efforts.

Operators can apply the data provided by UT-0° testing to their overall integrity assessments, corrosion growth assessments, and line service planning.

Best used for: small scanning projects for pipelines in use

Key features:

  • Inspections are followed by detailed reports, allowing for rapid remediation.
  • Can be performed on most material types.
  • Accurate data in offshore and onshore environments.


  • What are the primary benefits of ultrasonic testing? UT-0° provides an accurate means to inspect areas that are inaccessible to direct measurement techniques.
  • What kinds of qualifications do your technicians have? TDW technicians have American Society for Nondestructive Testing (ASNT) Level II certification, which ensures they have the training and expertise necessary to provide operators with the accurate data needed.