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INSPECTIONS EDDY CURRENT LINKS
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RADIOGRAPHY OUR CUSTOM BUILT RADIATION BAYS ARE NOW COMPLETE Euro NDT are now carrying out radiography inspections in their newly built test facility. X-rays are produced by high voltage x-ray machines whereas gamma rays are produced from radioactive isotopes such as Iridium 192 The x-ray or gamma rays are placed close to the material to be inspected and they pass through the material and are then captured on film. This film is then processed and the image is obtained as a series of grey shades between black and white. The choice of which type of radiation is used (x ray or gamma depends on the thickness of the material to be tested. Gamma sources have the advantage of portability which makes them ideal for use in construction site working. X-rays and gamma rays are very hazardous. Special precautions must be taken when performing radiography Therefore the operator will use these inside a protective enclosure or with appropriate barriers and warning signals to ensure there are no hazards to personnel. Radiographic inspection is primarily used to find sub-surface flaws in materials. High voltage x-ray machines produce X-rays whereas gamma rays are produced from radioactive isotopes such as iridium 192. The chosen radiation source is placed close to the material to be inspected and the radiation passes through the material and is then captured either on film or digitally. The choice of which type of radiation is used (x-ray or gamma) largely depends on the thickness of the material to be tested and the ease of access to area of inspection. Gamma sources have the advantage of portability, which makes them ideal for use in construction site working. High energy portable x-ray machines are available for special applications such as concrete structures. X-rays and gamma rays are very hazardous. Special precautions must be taken when performing radiography. Therefore the method is undertaken under controlled conditions, inside a protective enclosure or after assessment with appropriate barriers and warning systems to ensure that there are no hazards to personnel. |