Automatic Ultrasonic Testing (AUT) is a general term used to describe a Non-Destructive Testing (NDT) method using ultrasound that is aided by software to semi-automatically detect discontinuities in components from ultrasonic data received.

The mechanism at which the data is collected is not the determining factor on whether the NDT method is automated.

IACS NDT uses a multi-channel Phased Array and Time of Flight Diffraction (TOFD) system from Design Technologies. The AUT system is designed for pipeline girth weld scanning and is DNV approved.

The system uses a mechanised portable scanner with Phased Array and ultrasonic probes that feed to a sophisticated data acquisition system. AUT is widely recognised as the most accurate method of detecting and sizing weld flaws in a high-production environment.

Advantages of using AUT for pipeline inspection:

  • Pipeline AUT systems give real time display, data analysis and results.
  • Reactive control of welding process, giving lower rejection rate.
  • Pipeline AUT systems are completely safe i.e. there is no radiation hazard.
  • No need to disrupt production (by clearing the work area).
  • Eliminates the need for Radiographic Practitioners to work nights resulting in lower costs.
  • Produces a permanent record which can be incorporated into project records and quality data packages, which is auditable.
  • High reliability.
  • Very accurate defect sizing.
  • No disruption to wayleave (site) traffic.
  • Environmentally friendly – the production and disposal of chemicals is eliminated.

IACS utilises CSWIP qualified personnel, procedures and risk assessments are submitted to clients before production commences.

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