Digital radiography or direct radiography (DR) is the next evolution in inspection of in-service systems with minimal downtime or preparation. DR has the ability to inspect pipelines during operation without having to remove insulation and with no temperature restrictions. This is a filmless radiographic technique that requires no processing, is wireless and yields results instantaneously. Data storage and retrieval could not be simpler and information can be shared via the internet.

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Direct radiography can minimise downtime, increase workflow, yield quantitative results and further a company’s mechanical-integrity programme.
Direct Radiography (DR) has a number of applications within the industry. DR can be used to profile in-service piping to determine the presence of corrosion under insulation (CUI), flow-accelerated corrosion (FAC) or remaining wall thicknesses.
DR has been employed in several industries and for a variety of inspection types, such as:
  • Petrochemical
  • Nuclear
  • Fossil
  • Chemical
  • Military
  • Aerospace
  • Foundries
  • New construction
  • Post-construction
  • Corrosion monitoring
Direct radiography provides significant advantages over conventional radiography. These include remote-viewing capabilities and advanced software capabilities such as measuring tools, zoom, window levelling, etc
There are several advantages to using direct radiography:
  • Direct results after scanning on site
  • Large dynamic range
  • Dose reduction (up to 90% in some cases)
  • Smaller boundaries
  • No use of chemicals or dark-rooms
  • Use of image-processing tools
  • Digital archiving, reporting and transporting
  • Significantly fewer re-shoots
  • Digital images

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