The RTD Rayscan and Tankscan are real-time digital radiographic (RTR) inspection systems. RTR is an advanced technology utilising direct radiography (DR) techniques. It involves the filmless conversion of data into a high-resolution digital image of the entire weld and can be performed within a single scan. Rayscan can be used as either double-wall single image (DWSI) or single-wall single image (SWSI) and can inspect pipes with a diameter range from 5cm to 142cm (2" to 56") as well as horizontal and vertical tank weld seams.

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This technology complies with the requirements of various industry standards (ASME, API , DNV, EN-ISO). Rayscan/Tankscan (RTR) can minimise downtime and increase production at the same time as providing higher sensitivity and better overall definition to identify and evaluate indications.
Rayscan and Tankscan real-time digital radiography has been employed mainly in the new-construction industry, for example in:
  • Spool bases
  • Lay-down barges
  • Pipeline construction
  • LNG tank construction
This technique provides significant advantages over conventional radiography, such as:
  • Rapid assessment of weld quality with no chemical processing
  • Smaller exclusion zones
  • Lower source-strength requirements
  • Remote viewing capabilities
  • Advanced software capabilities, such as measuring tools, zoom, window levelling, etc.
There are several key advantages to Rayscan/Tankscan Real Time Digital Radiography over conventional film radiography:
  • Cost efficient; no consumables
  • Quick cycle time
    • High scan speed
    • No development time
    • Direct interpretation and feedback
  • Quality equal to/better than film
  • Increased safety
    • Reduced radiation required
    • Collimated X-ray beam
    • Shielded scanner design
  • Environmentally friendly; no chemical waste management required
  • High suitability for:
    • Pipes with diameters of 5cm to 142cm (2” to 56”)
    • Thin walls
    • Austenitic materials
    • Dissimilar welds
    • CRA pipelines
    • Root and hot-pass inspections