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NDT - Digital Radiography
The Objective
On-stream radiographic imaging is one of the most used techniques for locating, sizing and monitoring of corrosion on piping when insulated.
In the industrial environment of refineries and chemical plants, inspections have to be performed on a variety of difficult to reach locations, on pipes that might be isolated and where people are working around the clock. This is where Computed Radiography (PDF 652 KB) comes in.
The Solution
The execution of Digital Radiography is similar to conventional radiography for the on-stream technique. The image handling is different as a Phosphor image plate is used instead of a conventional film. The image plate stores 4,096 gray values, which can - upon read out by using an optical scanner - be visually distributed in several numbers of grey values. Because of this, a wide variety of thickness ranges can be inspected in only one image. The images can be produced using an appreciable lower radiation dose compared to conventional radiography.
Advantages
- Wall thickness can be measured digitally with higher accuracy and reproducibility
- Due to the shorter exposures less radiation dose is needed
- The CR reports can be embedded in AIM software
- Results available direct after exposure
- No chemicals, darkroom or developer needed
- Images are digitally archived; no quality loss and easier to trace and view
Application Range
- Metal and plastics
- Insulated piping
- Diameter range up till 22 Inch in special applications
- During process (filled) and even at high temperatures up to 250°Celsius
- Problem solving on pipelines and appendages (valves reducers, etc.)
Why SGS?
SGS Industrial Services has the knowledge, expertise and experience to perform conventional and advanced NDT inspections around the world using our unique network. Our service offer varies from Guided Wave and the conventional NDT techniques to Risk Based Inspection (RBI/AIM), Time of Flight Diffraction (TOFD), Corroscan, Positive Material Identification (PMI), Magnetic Flux Leakage (MFL), ACFM, Leak Testing, Thermography, Electromagnetic Testing (ET), (ET), RFEC, IRIS, Radiation detection RVI and Endoscopy inspections.
Send us your inquiry on Digital Radiography now.
Our services for Digital Radiography
SGS offers Digital Radiography combined with other NDT methods ranging from standard to advanced NDT Services.
We can help improve the reliability of your processes and assets. In every stage of an asset lifecycle, SGS contributes added-value NDT services.
SGS NDT Training Courses
The SGS NDT Training and Examination Center in Shanghai, China offers comprehensive and relevant NDT Training Courses which can be conducted at the Center or at the clients’ premises.
Offering Training Services is a key part of SGS’ strategy to improve quality and safety around the world. SGS trains and examines personnel to the highest inspection standards worldwide as there is an increasing demand for adequately trained & qualified NDT inspectors.
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