What is RT Testing? RT testing is a nondestructive testing inspection service, often used in the nuclear, petrochemical, pipeline and manufacturing industries. Computed Radiography (CR), Small Controlled Area Radiography (SCAR) and Direct Radiography (DR) are three reliable and safe RT testing methods.
Computed Radiography (CR)
Computed radiography (CR) is based on the persistent marking of a radio luminescent screen using X-rays or Gamma rays. CR technology is portable and can be used in almost any environment.
The CR method is mainly used to inspect forged parts, castings and welds. This method also validates the integrity of piping for corrosion and erosion.
Advantages:
- Portable;
- Can be used where portable dark rooms cannot be installed;
- Precise sizing, improved imaging and faster analysis with the help of software tools;
- Faster and more cost-efficient than conventional radiography;
- No chemicals required;
- Electronic data storage;
- All information can be acquired from a single position, even with complex geometries;
- Weaker X-rays or Gamma rays for a smaller safety perimeter.
Small Controlled Area Radiography (SCAR)
Small Controlled Area Radiography (SCAR) is distinguished by using a compact exposure device. This instrument improves the efficiency of radiographic operations by making it safer, while maintaining or increasing productivity when compared with traditional exposure devices.
The SCAR method allows for a smaller and less intrusive safety zone for the people working in the surrounding areas, hence increasing overall productivity of the radiography team, especially in crowded areas. Since the safety parameter is smaller, multiple operations can happen simultaneously in the same area.
Advantages:
- 24h/24 radiography;
- Shut down time reduced to a minimum;
- Reduction or elimination of the effect on the nuclear level alarm.
Direct Radiography (DR)
Direct Radiography (DR) is a type of imaging using X-rays or Gamma rays. This method uses numeric radiation sensors instead of traditional photo film. The DR technology is completely portable and can be used in almost any environment.
DR is mainly used for qualitative inspection of forged parts, castings, welds and also to validate the integrity of piping (corrosion and erosion).
Advantages:
- High quality numeric image in a few seconds for on the spot analysis;
- Precise dimensioning, better image quality, more efficient analysis thanks to software tools;
- No chemicals required;
- Electronic data storage;
- The customer does not need specialized equipment or software to visualize data;
- All information can be acquired from a single position, even with complex geometries;
- Weaker X-rays or Gamma rays for a smaller safety perimeter.
