Non-destructive testing (NDT)

The NDT laboratory of the Welding Institute carries out testing without destroying the material, mainly in the field and partly in the in-house laboratory. Testing takes place in an accredited laboratory to EN ISO/IEC 17025 with staff certified to EN ISO 9712 and the PED directive.

Which NDT methods do you carry out?

  • radiographic testing (RT),
  • ultrasonic testing (UT),
  • magnetic particle testing (MT),
  • penetrant testing (PT),
  • visual, direct and videoscopic testing (VT, RVI),
  • leak testing with vacuum boxes (LT),
  • ultrasonic thickness measurement (UTT),
  • ultrasonic testing of plate for lamination (UTL).

We also have many years of experience in testing plastic joints, measuring the thickness of protective coatings (corrosion protection), measuring the delta ferrite content and testing the dielectric strength of tank insulation.

What do you test?

  • pressure equipment: pressure vessels and piping of all types and materials, simple pressure vessels, fired pressure equipment, transportable pressure equipment, gas pipelines, the pharmaceutical, food and petrochemical industries,
  • tanks for petroleum products or other media,
  • steel structures, for example bridges, stadiums, cranes, building structures and piles,
  • welded assemblies, for example thermal power plants and other energy installations, construction machinery and railway equipment,
  • other products and structures.

Why carry out NDT?

Requirements for the quality and conformity assessment of products grow day by day, so defects in material must be detected in the early stages of production, for safety, ecological and economic reasons. The connection with the Institute’s other departments ensures a quick response.

Contact

Laboratory quality policy (PDF, Slovenian).

Frequently asked questions

Is the NDT laboratory accredited?

Yes. NDT examinations and tests are carried out within the accredited NDT laboratory to EN ISO/IEC 17025.

Do you test in the field?

Yes, we carry out testing mainly in the field and partly in the in-house laboratory.

What kind of staff carry out the tests?

More than 20 certified permanently employed inspectors, trained and certified in accordance with ISO, ASNT, CP-189 and SNT-TC-1A, including level 3 holders. Some of the staff hold EWT/EWE and IWIP-C diplomas.

Which methods do you offer?

RT, UT, MT, PT, VT (direct and videoscopic), leak testing with vacuum boxes, ultrasonic thickness measurement and testing of plate for lamination.

How do I order a test?

We carry out the client’s requirements by prior order. Send an enquiry or call the head of the NDT laboratory.

Do you test pressure equipment?

Yes. We have more than 60 years of experience in testing pressure equipment, tanks, steel structures and welded assemblies.

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