Digital radiography with Digital Detector Array – DDA

Digital radiography using DDA makes it possible to conduct quick, safe and non-invasive inspections of welds, pipelines and other components – all without having to stop production. With high image quality and minimal radiation, defects, corrosion and material fatigue can be detected early.

What is a digital detector array?

A DDA is a digital detector that directly converts X-rays into images.
Thanks to better contrast, sharper results and faster times compared to traditional radiography, digital radiography with DDA is a modern method that is ideal for detecting fine details, small defects and achieving more reliable results.

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Advantages of DDA compared to traditional radiography

  • Up to 17% shorter inspection time
  • Lower radiation dose for personnel
  • Safer work environment
  • Immediate feedback and contact
  • Environmentally and cost-effective

Applications for digital radiography using DDA

Digital radiography is used in multiple industries to ensure high quality, reduce downtime and avoid costly errors. Here are some common applications – illustrated with typical example images from our assignments:

Welded structures

Control of welds in pipes and tanks according to ISO 17636-2 Class B
Detects cracks, porosities and other defects with high precision and documentation.

Valves in operation – through insulation

Inspection of valves in operation without disassembly or shutdown
With DDA, we can inspect valves through insulation and during operation under pressure. Common areas: chemical industry, energy plants, and process industry.

Wall thickness and erosion

Non-destructive measurement of wall thickness to detect early damage
We perform corrosion and material degradation checks even in hard-to-reach places. Accurate measurements with high-quality visual results.

Sprinkler systems and flow control

Detection of blockages and foreign objects in piping
We inspect sprinkler systems where blockages or foreign objects may exist. We detect and localize the issues quickly with reliable results.

​​​​​​​Castings and plastic parts

Inspection of castings and plastic components before assembly
Valves, fittings and various machine parts are examined thoroughly before being put into service.

Valves and pressurized parts

Radiography of pressurized units without shutdown
Quick and safe inspection of valves through high-contrast radiographic imaging. Reduces downtime and increases safety.

System in the field – mobility and flexibility

Portable equipment for inspection in industrial environments
Our mobile DDA systems with high-resolution imaging can be used in various locations and industries.

Frequently asked questions about digital radiography with DDA

What is a Digital Detector Array (DDA)?
A DDA is a digital X-ray detector that uses high-resolution imaging to visualize defects and converts radiation directly into digital images.
The result is better image quality, faster analysis, and fewer reshoots – all without film, chemicals, or darkrooms.

What are the benefits of DDA compared to traditional X-ray methods?
DDA provides sharper, faster and safer results with less radiation exposure. It is a faster, cleaner, and more environmentally friendly method that delivers higher reliability. Therefore, DDA is often chosen for critical inspections.

Can systems using DDA be used during operation?
Yes. One of the major benefits of DDA is that it can be used even during operation, which eliminates the need for downtime or shutdowns.

How does DDA reduce costs and environmental impact?
Digital inspection eliminates the need for chemicals, development rooms and film handling. The method reduces waste and saves resources – while being faster and more efficient.

What types of defects can be detected with DDA?
Defects such as cracks, corrosion, porosities, incomplete fusion and foreign materials can be detected. We can also inspect assemblies and verify weld quality.

What materials can be inspected with digital radiography?
Cast iron, aluminum, stainless steel, plastic, composite, castings and even armored concrete – everything from large objects to small components.

Can we inspect without removing insulation?
Yes. DDA allows for inspection through insulation and even through armored concrete and some metallic materials to identify corrosion, defects and poor bonding.

How does DDA affect the environment?
As no film or chemicals are needed, DDA reduces environmental impact. It is a clean method that contributes to improved sustainability.

Is the equipment portable and suitable for fieldwork?
Yes. Our mobile systems provide high-resolution images in seconds – perfect for inspections in the field, at workshops or on site.

How fast do you get results after an inspection?
Images are generated directly after exposure and can be analyzed on site. Reports and recommendations can be delivered the same day if needed.

Are your systems compliant with standards?
Yes. All systems are calibrated according to ISO EN ISO 17636-2 Class B, which ensures that all inspections are performed with the highest requirements for accuracy and documentation.

​​​​​​​Do you store and archive the customer's inspection images?
Yes. All images are stored and archived for traceability, analysis and reporting. This enables follow-ups and quality assurance over time.