Non-destructive testing and quality assurance for pressure vessels, pipelines and welded joints.
DEFRA-TEST GmbH
Bargweg 3 A, 27809 Lemwerder, Lower SaxonyNew on Amplifa
About DEFRA-TEST GmbH
DEFRA-TEST GmbH is a specialised company for non-destructive testing (NDT) and quality assurance based in Lemwerder, Lower Saxony. The company tests materials, welded joints, castings and components using recognised non-destructive methods such as ultrasonic testing, phased array, TOFD, magnetic particle, dye penetrant and visual testing – standard-compliant, fully documented and without damaging the components. A key focus is vessel inspection as well as the testing and assessment of H₂S-exposed components, in particular the handling of hydrogen-induced corrosion. In addition, DEFRA-TEST GmbH offers quality assurance services such as incoming goods inspections, dimensional checks, verification of acceptance test certificates and the digitisation of test documents. The testers are certified in accordance with DIN EN ISO 9712; assignments are carried out on site in the workshop, on the construction site or at the plant. Customers come from the pressure vessel, pipeline, vessel and apparatus engineering sectors as well as the petrochemical industry.
- Site
- Lemwerder
- Processes
- Ultrasonic testing (UT), Phased array ultrasonic testing (UT-PAUT), Time of Flight Diffraction (UT-TOFD), Ultrasonic testing at heights (FISAT Level 1), Magnetic particle testing (MT), Dye penetrant testing (PT), Visual testing (VT), Mobile hardness testing (HT)
- Materials
- Ultrasonic Testing, Phased Array Ultrasonic Testing, Time of Flight Diffraction, Ultrasonic Testing at Heights (FISAT Level 1), Magnetic Particle Testing, Dye Penetrant Testing, Visual Testing, Mobile Hardness Testing
- Certificates
- DIN EN ISO 9712 (NDT personnel certification), DGZfP member, ISO 9001
- Founded
- 1991-10-31
- Employees
- 12
- Industries
- Pressure vessel manufacturing, Pipeline construction, Vessel and apparatus engineering, Petrochemicals (H₂S components), Castings/component manufacturing
- 01
Incoming goods and visual inspection
- 02
Verification of acceptance test certificates
- 03
Non-destructive testing (UT, PAUT, TOFD, MT, PT, VT, HT, PMI-OES)
- 04
Assessment and defect reports
- 05
Test reports and documentation
- 06
Digitisation and traceability
Testing Methods
Ultrasonic Testing
Detection of material defects in weld seams, castings and components without damage.
Phased Array Ultrasonic Testing
Ultrasonic testing using phased array technology for precise defect assessment.
Time of Flight Diffraction
Method for detection and through-wall sizing of defects in welded joints.
Ultrasonic Testing at Heights (FISAT Level 1)
Testing in height applications in accordance with FISAT Level 1.
Magnetic Particle Testing
Surface and near-surface crack testing of ferromagnetic materials.
Dye Penetrant Testing
Crack testing of near-surface defects in non-ferromagnetic materials.
Visual Testing
Visual assessment of components, weld seams and surfaces.
Mobile Hardness Testing
Mobile hardness measurement directly on the component or on site.
Material Verification Testing (PMI-OES)
Spectrometric identification of materials to prevent material mix-ups.
Locations
Lemwerder
DEHead office, testing and quality assurance services
- Materials
- Welded joints, castings, components, pressure vessels, pipelines
- Ultrasonic testing equipment (UT, PAUT, TOFD, FISAT)
- Equipment for MT, PT, VT, HT, PMI-OES
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Ultrasonic testing (UT)Testing | – | – | – | – | Welded joints, Castings, Components, Pressure vessels, Pipelines, Tank bottoms |
| Phased array ultrasonic testing (UT-PAUT)Testing | – | – | – | – | – |
| Time of Flight Diffraction (UT-TOFD)Testing | – | – | – | – | – |
| Ultrasonic testing at heights (FISAT Level 1)Testing | – | – | – | – | – |
| Magnetic particle testing (MT)Testing | – | – | – | – | – |
| Dye penetrant testing (PT)Testing | – | – | – | – | – |
| Visual testing (VT)Testing | – | – | – | – | – |
| Mobile hardness testing (HT)Testing | – | – | – | – | – |
| Material verification testing PMI-OESTesting | – | – | – | – | – |
| Visual incoming goods inspectionsTesting | – | – | – | – | – |
| Dimensional checksTesting | – | – | – | – | – |
| Verification of acceptance test certificatesTesting | – | – | – | – | – |
| Testing and assessment of H₂S-exposed components (hydrogen-induced corrosion)Testing | – | – | – | – | – |
| Vessel inspectionTesting | – | – | – | – | – |
Additional services
Qualifications and Standards
All testing is carried out in accordance with applicable EN ISO standards and fully documented. The testers are certified in accordance with DIN EN ISO 9712; as an independent testing company, DEFRA-TEST GmbH delivers neutral, objective test results.
| Evidence | Lemwerder |
|---|---|
| DIN EN ISO 9712 (NDT personnel certification) | |
| DGZfP member | |
| ISO 9001 |
History
- 1991
Entry in the commercial register (HRB 218840, Local Court Oldenburg) on 31 October 1991.
- 2022
Boris Meyer and Kim Meyer have been managing directors since 2022.
- 2025
Change of corporate purpose, change of registered office and address; 2024 annual financial statements published.