Long-Range Ultrasonic Testing (LRUT) is a non-destructive testing (NDT) method that uses ultrasonic waves to quickly inspect pipelines for corrosion and erosion:

How it works

LRUT uses plate or Lamb waves instead of bulk waves, and operates at a frequency of kHz rather than MHz. It also doesn’t require a couplant between the test surface and the transducers, which speeds up the process.

Benefits

LRUT can test large areas of material from a single test point, and is a cost-effective way to inspect long lengths of pipe.

History

TWI and Imperial College London pioneered LRUT in the 1990s. In 1998, they created Teletest®, the first commercially-available guided wave testing system.

Ultrasonic testing (UT) is a versatile NDT method that uses high-frequency sound waves to characterize materials or detect flaws. In conventional UT, technicians place an ultrasound transducer on the material, typically with a layer of liquid or gel to help transmit the sound waves.

APPLICATIONS

Corrosion, Pitting in Insulated Pipelines
Corrosion, Pitting Buried Underground Pipeline
Process Pipelines Corrosion Findings
No need to remove insulations
No need to excavate full length of pipes