The numbers
55
Vessels inspected 2025
2TB
Data captured 2025
150m+
Metres of weld inspected 2025
Advanced NDT Solutions
Conventional NDT tells you whether a defect exists. Advanced NDT tells you where it is, how big it is and what it means. Matrix delivers phased array, time-of-flight diffraction, corrosion mapping, pulsed eddy current and HTHA detection for new construction and in-service assets, as a UKAS-accredited inspection body. Our technicians are IRATA rope access qualified, so advanced inspection can be carried out at height without scaffold.
Corrosion Mapping
Encoded ultrasonic scanning that records thickness across an entire surface at 1 mm × 1 mm resolution using our semi- and fully-automated phased array systems. The output is a colour map of remaining wall together with the statistics a fitness-for-service assessment needs: minimum, mean and distribution. Repeat scans are directly comparable, so corrosion rates can be established over time. Used on pressure vessels, pipework, tank shells and floors, and structural members.
Time of flight diffraction (ToFD)
ToFD for both fabrication and in-service inspection. ToFD uses diffracted signals from defect tips to size flaws through-wall with an accuracy pulse-echo methods cannot match, giving the inputs an engineering critical assessment needs. We specialise in the detection and measurement of weld root corrosion, and combine ToFD with phased array on critical welds for both detection and precise height sizing.
Phased Array (PAUT)
Multi-element probes sweep, steer and focus the beam electronically, inspecting a full weld volume in a single pass and producing sectorial, linear and C-scan images that are easy to interpret and archive. We use PAUT as a faster, safer alternative to radiography on butt welds and complex geometries, and for flange face, bolt and in-service crack detection and sizing. Encoded scanning with full data capture supports repeat inspection and audit.
Pulsed Eddy Current (PEC)
Pulsed eddy current detects general wall loss through up to 300 mm of insulation, cladding or coating without removing it, so corrosion-under-insulation programmes can be screened quickly and insulation stripped only where it matters. It is equally useful where surface contact for ultrasonics is poor, such as external corrosion scabs, heavy scale or coating breakdown.
High Temperature Hydrogen Attack (HTHA)
High temperature hydrogen attack damages steel from the inside and gives little external warning, so early detection is critical to the safe operation of refinery and petrochemical plant. Using specialist probes and operators trained specifically in HTHA detection, we screen susceptible equipment and characterise damage so that run, repair or replace decisions are made on evidence.