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Standard NDT-services
Visual inspections, CCTV, Endoscopy, TOFD, Helium leak testing, COCOM
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Visual inspections, CCTV and endoscopy
To support non-destructive inspections, KEMA employs a range of endoscopes and a CCTV system. Video endoscopes enable us to record images on photograph as well as on video tape. One system is designed to inspect boilers and gasifiers during operation at 1500 ºC. This system can be connected to a pyrometric system. A small diameter endoscope (Ø 1mm) is available to inspect, for example, hollow-structured blades and vanes of gas turbines.
Benefits:- Quality images of inspected areas to support management decisions
- Equipment available in a wide range of lengths and diameters: flexibility
- Broad experience with larger structures as well as with smaller objects, ensuring quality advice by KEMA
- Rapid deployment around the world.
For more information download the brochure below or contact us.
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[download] TOS 7077 NDT CCTV and endoscopy (.pdf 151 kb)
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Defect sizing with Time of Flight Diffraction
To detect defects in constructions, ultrasonic testing is a useful tool. Especially in-service-grown defects, often resulting in cracking, can be handled this way. Conventional ultrasonic testing is, however, not very reliable as to crack sizing. The Time Of Flight Diffraction (TOFD) method provides this possibility.
Benefits:- Quick scanning method
- Reliable defect detection and defect sizing method
- Possibility to "trend" degradation
- Possibility to delay repair or replacement of the equipment
- Recorded inspection data
- Large range of applicability to wall thicknesses from 6 mm to > 200 mm
- Large range of applicability to materials, such as carbon steel, stainless steel, non-ferros, glass fiber-reinforced plastics and concrete.
For more information: download the brochure below or contact us.
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Leak testing with Helium
Leak testing is often the final test of equipment in the manufacturing stage; during the service life, leaks may occur and leak testing will be necessary. Helium leak testing has several advantages over other leak testing techniques. To establish process dynamics, helium tracing is sometimes very useful as well. KEMA has years of experience in all sorts of applications, including nuclear power plants.
Benefits:- Helium does not react with surrounding gases, fluids or solids and is therefore extremely suitable for detecting even the smallest leaks
- High accuracy with regard to leak size and positioning of leaks
- Possibility to leak test a large component integrally or 'sniff' locally
- Leak testing can take place during operation of the equipment.
For more information: download the brochure below or contact us.
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Coating condition assessment of gas turbine blades
Sophisticated coatings protect the superalloys in your turbines against oxidation, corrosion and environmentally unfriendly components. Non-destructive evaluation of both new and in-service high-temperature coatings on gas turbine blades is an important factor in achieving a high level of structural integrity in advanced gas turbines. Multi-frequency-scanning eddy current techniques are able to determine the coating thickness as well as the aluminum content of the coating. Therefore they can be used as a quality assurance tool upon acceptance of the blades. KEMA offers this technique as COCOM (COating COndition Measurement), a system to assess the condition of gas turbine blade coatings. Experimentally, the method relies on eddy current measurements.
For more information, download the brochure below or contact us.
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