Inspection methods
Proven quality – thanks to system, technology and experience
Every inspection is only as good as the procedure which lies in the basis of it.
Thor Engineering Services & Expert Office GmbH offers a comprehensive range of non-destructive, image-based and specialized testing methods – carried out by experienced specialists with a sound understanding of standards.
→ VT – Visual Testing
Traditional visual inspection by qualified personnel
Inspection of welds, surfaces, component geometries
Detection of deformations, cracks, inclusions, corrosion & tarnishing colors
Documentation via checklist and photographic evidence
Carried out according to DIN EN ISO 17637 / ISO 5817
→ VT - Endoscopic visual inspection
Professionally inspected areas that are inaccessible or hard-to-see
Use of state-of-the-art endoscopes & camera systems (e.g. VUMAN E3+, SNK Ultra 365)
Ideal for the interiors spaces of tanks, pipelines and equipment
Live broadcast, recording, image archiving
Optionally with structured test reports & release status
→ PT - Dye Penetrant Test
Non-destructive testing for fine surface cracks
Testing for hairline cracks, pores, welding defects in metallic materials
Multi-step process: cleaning, penetrant, developer, evaluation
Particularly effective on non-magnetic materials
Application according to DIN EN ISO 3452
→ Digital inspection of plastic weld seams
Process safety for thermoplastic pipe- and tank systems
Visual inspection & parameter evaluation of weld seams on heating element and sleeves
Reading of welding data from electronic protocols (e.g. DataLoggers)
Verification against manufacturer's specifications and standard regulations
Weld seams on pipelines up to D240 performed with the WBI tool from GF and the corresponding documentation Rohrleitungsschweißungen bis D240
Used in the chemical and semiconductor industries, among others
→ Cleanliness test / Riboflavin Test
Validated cleaning control for hygienically critical systems
Detection of residues in cleaning processes using fluorescent substances
Use of UV light to make weak points visible
Typically used in GMP environments, pharmaceuticals, food industry, semiconductors production
Implementation and evaluation in according to customer-specific or regulatory requirements
➕ Other inspections methods
(optionally in combination)
MT (magnetic particle testing) - for ferromagnetic components
UT (Ultrasonic testing) - wall thickness measurement
RT (Radiographic testing) - X-ray inspection of weld seams
Pressure test - hydrostatic / pneumatic, with monitoring and protocol
Wall thickness and residual wall analysis - with UT devices
What is safe is what has been documented and verified in a comprehensible traceable manner.
We advise you on the selection of suitable processes - precisely tailored to the material, medium and project goal.