Non-Destructive Testing (NDT) provides critical insight into the integrity and condition of materials, components and structures without causing damage or disruption. The Test Inspect Group delivers a comprehensive range of NDT services to support fabrication, manufacturing, construction and in-service inspection activities across safety-critical industries.
Where a surface cannot be reached by eye, remote visual inspection examines the inside of vessels, pipework and tanks without opening them — carried out by CSWIP welding inspectors and PCN Level 2/3 visual inspection personnel.
Need NDT inspection? Tell us what needs testing and where, and we'll come back with a price.
Our capabilities cover established and advanced inspection techniques, applied by qualified personnel and supported by structured reporting and technical oversight. NDT services are delivered by specialist operating companies within the Test Inspect Group, ensuring consistent standards, traceability and compliance with applicable specifications and requirements.
NDT methods we offer
Radiography (RT)X-ray and gamma radiography of welds and castings, on site or in our Lillyhall compound.
Ultrasonic testing (UT)Weld inspection, lamination checks and thickness surveys on pipe, plate and vessels.
Phased array (PAUT)Volumetric weld inspection with a permanent, reviewable data record.
Magnetic particle (MPI)Surface and near-surface crack detection on ferromagnetic welds and components.
Dye penetrant (DPI)Surface-breaking defect detection on any non-porous material, including stainless.
Remote visual (RVI)Borescope and videoscope inspection inside vessels, pipework and tanks.
Material identification (PMI)XRF and OES alloy verification, on site or in our laboratory.
Radiographic interpretationIndependent review and reporting of radiographs by qualified interpreters.
Level 3 servicesProcedures, technique sheets, audits and technical oversight of NDT programmes.
Industries we work in
Our technicians have inspected for the nuclear sector and its supply chain, oil and gas, marine, renewables, power generation, petrochemical and general fabrication. That breadth matters: they know what a result has to stand up to in each industry, and which codes and acceptance standards apply.
Why clients use Test Inspect for NDT
- Qualified people. PCN qualified technicians, with Level 3 oversight of procedures and reporting.
- Certified systems. ISO 9001 certified, audited by World Certification Services, a UKAS-accredited certification body.
- Coverage north and south. Bases in Cumbria, Durham (JML Inspection) and Southampton (Responsive Southampton).
- Radiation protection in house. Radiography is supported by our own radiation protection team, including IRR17 notifications.
- One group, more than NDT. Mechanical testing, welder qualification and flawed specimens sit alongside NDT, so a job doesn't need three suppliers.
On site or at our facilities
We work on site across the UK, from fabrication shops to operating plant. Components can also come to us: our Lillyhall base in Cumbria has a radiography compound that takes spools up to 8 metres long, alongside our mechanical testing laboratory.
