Non-Destructive Testing contributes decisively to ensure the quality of the materials and constructions. Testing is carried out so as not to affect the physical condition and the usability of the relevant objects.
The NDT consists mainly of the following methods:
- Visual Testing
- Radiography
- Ultrasonic Testing
- Magnetic ParticlesTesting
- Liquid PenetrantTesting
- Eddy CurrentsTesting
The visual inspection is the most basic NDT method, which precedes and accompanies all the other methods.
The Radiography is the oldest and most widely used NDT method. Radiography is used for welding plates and pipelines. The application is based on the penetration of X – Rays or Gamma Rays for projecting and capturing the discontinuities of the material in an appropriate industrial use film.
The plate and pipeline thickness measurement testing using Ultrasonic determines their thickness in order to assess the rate of corrosion.
The ultrasonic discontinuity detection is used to check welds in plates and pipelines. It is based on the transmission of high frequency sound waves in the specimen under examination in order to detect discontinuities.
The magnetic particles method is a widespread method for detecting surface and subsurface discontinuities of sub-metallic ferromagnetic materials. They apply the disturbance phenomenon of the magnetic field due to the material discontinuities.
The liquid penetrant is a customary method for detecting defects on the surface of the specimen on non-porous materials.
The Eddy Current method is a surface and subsurface discontinuity testing method, and is created in conductive metals through alternating magnetic field. The discontinuities of the material disrupt the flow of eddy currents and according to the corresponding indication on the device, their location is spotted.
The Inspection Department possesses the necessary equipment, appropriate experience, and personnel certified in the EN 473 (BINDT PCN) and SNT to carry out the following Non-Destructive Testing:
- Visual Testing
- Ultrasonic Testing
- Magnetic ParticlesTesting
- Liquid PenetrantsTesting
