Ultrasonic Testing

Spective Technical Services (STS) offers a full range of non-destructive ultrasonic testing services to meet the many requirements of pipeline girth weld inspections:

Automated Ultrasonic Testing (AUT)

Manual Ultrasonic Testing (MUT)

Immersion Ultrasonic Testing (IUT)

Permanently Installed Monitoring System (PIMS)

The Automated Ultrasonic Testing (AUT) of welds is performed by the mechanization of a portable scanner filled with ultrasonic probes and a data acquisition system.

Only certified operators make use of this production-proven hardware, which is why AUT is the most popular method choice of Non-Destructive Testing (NDT) of detecting and sizing welding flaws in a high-production environment.

The PipeWIZARD® Phased Array (PA) system with portable and modular OmniScan offers an extensive girth weld inspection. With a global team of Ultrasonic Level II or higher operators ready to report to offshore and onshore locations. The acutely accurate and high reliability rating means a higher standard of production with lower costs.

  • Real-time reporting
  • Reduced weld-to-weld inspection times
  • Operational flexibility
  • Fast scanning speed
  • OmniScan’s advanced performance for faster setups, test cycles and reporting
  • A system that works for both high-production and specialized weld inspections and meets or exceeds        ASTM E-1961, DNV2000 OS- F101, and API 1104 codes

The PipeWIZARD Phased Array system offers the most reliable girth weld inspection and real-time reporting, including outstanding capabilities such as:


  • Scanning pipes from 4” to 56” in diameter whilst changing only the band, setup file, and wedge
  • Scanning pipe walls from 0.25” to 2”
  • Increased amount of zones for a more optimal detection and vertical sizing
  • Recall of appropriate setup files to accommodate any weld profile, pipe diameter, or wall thickness


Automated Ultrasonic Testing (AUT) of pipeline girth welds using the PipeWIZARD system meets or exceeds ASTM E-1961, DNV2000 OS-F101, and API 1104 codes due to:

  • Fast scanning speed: 100mm per second
  • Weld-to-weld inspection time of less than four minutes for 36” pipe
  • Great flexibility for different pipe diameters, wall thicknesses, and weld profiles
  • High reliability factor


Zonal pulse echo, coupled with Time of Diffraction (TOFD) and sectorial scanning delivers the ability to efficiently and reliably detect the presence of both fabrication and service-induced defects while providing the data necessary for accurate assessment of their size.

The Wavemaker Pipe Screening System is a guided ultrasonic testing system made for rapid screening of long lengths of internal and external pipe corrosion, axial, and circumferential cracking. The Wavemaker Pipe Screening System can be used on pipes buried or insulated. A thorough and efficient search is performed as hundreds of meters of pipe can be inspected in one day, with every part of the pipe wall checked. The testing can be performed while a plant is in operation and offers minimal disruption.

The system utilises a new two-ring probe array which has been proven to be profoundly efficient in detecting corrosion whilst also reducing equipment costs – these probes can be attached to the pipe in under a minute.

  • Detection and positioning of corrosion under insulated pipes without removing lagging other than for probe application
  • Screening of inaccessible areas such as sleeved road crossings and wall penetrations
  • Screening of onshore and offshore pipework, even in tightly packed racks
  • Riser Inspection

TOFD setup is efficient and is installed without the need to create a new calibration standard. This makes it the best solution when a fast clean/dirty weld determination is needed.

TOFD is effective when evaluating multiple weld bevels or any other parameters vary during procedure development.

Single and multi-probe Manual Ultrasonic Testing (MUT) is optimal for checking wall thickness, crack detection, weld defect inspection, and laminations in pipe ends. Our Phased Array systems allow for corrosion mapping of components, and to provide advanced weld inspection capabilities.

Phased Array (PA) testing (sectorial and linear) produces detailed visuals similar to medical ultrasound images. The use of the PA system allows for a complete girth weld inspection and real-time viewing.

Using electronic beam forming, PA generates and receives ultrasound, with each element in the array individually pulsed and delayed to create a wide range of beam angles and focal distances. PA inspection allows for customized weld inspections, advanced imaging, and highly detailed inspections.

This form of testing offers an elevated Probability of Detection (POD) of the smallest defects in sub-surface materials, including the size of the flaw and its precise location in a product.

Permanently Installed Monitoring System (PIMS) is a cutting-edge pipeline inspection and monitoring system that uses guided ultrasonic waves to access difficult areas including buried pipe, subsea applications pre-installation and contaminated areas. PIMS has simplified the external screening of subsea pipelines, jumpers, risers, and manifold pipework whilst delivering critical insight into asset integrity.

  • Non-intrusive with no effect on production
  • Inspection of large sections of pipe from a single test location
  • Inspection of un-piggable or inaccessible pipeline sections
  • Ability to retrofit fixed units to in-service pipelines
  • Quick deployment of mobile units to high-risk areas by WROV
  • Real-time analysis of data and permanent record