Advanced NDT
Digital and computed radiography (DR and CR)
Digital radiography keeps everything radiography is good at, a permanent image of volumetric flaws and wall loss, and removes the film, the darkroom and the chemicals. Computed radiography uses reusable phosphor plates read by a scanner; digital detector arrays produce the image directly. Both give images that can be measured on screen, enhanced, archived and shared with the client the same day.
CR or DR?
Computed radiography (CR) plates are flexible and can be wrapped around pipe like film, which makes CR a straightforward replacement for film in weld radiography and profile radiography of small-bore pipe.
Digital detector arrays (DDA, often called DR) give the image in seconds and usually need less exposure. They suit corrosion and erosion profiling on insulated or uninsulated lines, valve and fitting checks, and production work where throughput matters.
Image quality is demonstrated, not assumed
Every digital technique has to show it meets the image quality the code requires: image quality indicators, basic spatial resolution and normalised signal-to-noise ratio are recorded on each exposure. The procedure states the detector, the qualification of the system and the image-quality values achieved.
Typical applications
- Weld radiography on piping and pressure equipment to the construction code.
- Profile radiography for corrosion under insulation without stripping the insulation.
- Erosion checks at bends, tees and reducers.
- Castings and valve bodies.
How we deliver it
Digital and computed radiography is carried out to a written procedure approved for the scope, naming the code and edition, the equipment and calibration, the coverage and the acceptance criteria. The procedure and each technician’s certification are submitted for the client’s review before mobilisation.
Work is planned and supervised by ASNT Level III personnel; our founder holds ASNT NDT Level III in UT, RT, MT, PT and VT. Reports state the coverage achieved and any limitations, so the engineer reading them knows what was examined and what was not, and any reportable finding is raised the same day.
Governing codes and standards
- ASME Section V, Article 2 (radiographic examination), including the computed and digital radiography appendices
- ASTM E2033 and ASTM E2445/E2446 (computed radiography practice and system qualification)
- ASTM E2698 (radiographic examination using digital detector arrays)
- ISO 17636-2 (radiographic testing of welds with digital detectors)
What you receive
- Digital images in a viewable archive format with the interpretation
- Image-quality records for every exposure
- Wall-thickness or flaw report against the client acceptance criteria
Industries served
- Refining and petrochemical
- Oil and gas production and pipelines
- Power generation
- Fabrication shops
Frequently asked questions
Is digital radiography accepted by ASME?
Yes. ASME Section V, Article 2 includes requirements for computed radiography and digital detector radiography, provided the procedure and image quality meet the article’s requirements.
Talk to an inspection engineer
Send the equipment list or drawings, the inspection you need and your timing. Quotes are prepared for each scope and region.
Request a QuoteRequest an inspection quote (RFQ)
Tell us the asset, the method, where it is, the governing code, your dates, the size of the job and the report you need. We reply with questions or a quote. Affordable, accessible, fully customizable — no published pricing.
Or email the same details to info@atlantisndt.com. Mobilisation: North America; confirm your location in your RFQ.
Speak to an ASNT NDT Level III
Atlantis NDT provides ASNT Level III consulting, NDT training to ASNT SNT-TC-1A, inspection management software and independent report validation. Request a free consultation and we will return a tailored quote — affordable, accessible and fully customizable to your programme.