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Phased Array Ultrasonic Testing

Advanced multi-element UT for critical weld and asset inspection

Next-Generation Flaw Detection

Phased Array Ultrasonic Testing (PAUT) represents the most significant advancement in ultrasonic inspection technology available today. Unlike conventional single-element UT, PAUT uses multiple ultrasonic elements that can be individually timed to steer, focus, and sweep sound beams across a component — producing detailed, cross-sectional images comparable to medical imaging.

At Oil and Gas Plant Engineer Consultants, we deploy state-of-the-art PAUT equipment operated by certified technicians to inspect welds, forgings, castings, and composite structures in refineries, petrochemical plants, and pipeline networks across South Africa.

Our PAUT service eliminates many of the limitations of conventional UT. By electronically controlling the beam angle and focal point, we achieve superior coverage of complex weld geometries — including nozzle welds, T-joints, and dissimilar metal welds — in a fraction of the time required by traditional methods.

  • ASME V & ASME VIII compliant procedures
  • Multi-angle sector scans and linear scans
  • Real-time imaging with permanent digital records
  • Eliminates radiation hazards associated with RT
PAUT inspection of pipeline

Key Applications

Weld Inspection

Pre-service and in-service inspection of butt welds, fillet welds, and nozzle-to-shell welds in pressure vessels, storage tanks, and piping systems per ASME and API codes.

Corrosion Mapping

High-resolution B-scan and C-scan mapping of wall thickness loss across large surface areas. Critical for integrity assessments on ageing assets and remaining life calculations.

Flaw Characterisation

Accurate sizing, positioning, and classification of volumetric and planar defects. Our PAUT data meets the requirements for Engineering Critical Assessment (ECA) and fitness-for-service evaluations.

Why PAUT Over Conventional Methods?

PAUT delivers faster inspections, better detection probability, and fully auditable digital data — making it the preferred choice for turnarounds, shutdowns, and critical path inspections.

Up to 10x faster scanning speed vs single-element UT

Higher Probability of Detection (POD) for all flaw orientations

No radiation safety zones — inspect while adjacent work continues

Encoded data allows independent third-party review

Reduced human error through automated data acquisition

Need a PAUT Inspection?

Our certified technicians are ready to mobilize to your site anywhere in South Africa.

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