Finally, the software should allow for automatic generation of site reports, thus avoiding typing errors and increasing speed. Validation RTD Rotoscan has been validated and qualified at a number of occasions. In all those cases, a number of test welds with purposely induced weld defects were inspected with Rotoscan and with radiography, and subsequently they were destructively evaluated. Therefore, mechanized UT leaves less chance that defects of structural concern remain undetected. This means that safety increases.
Practical experience shows that repair rates tend to decrease rather than increase.
This has partly to do with the fact that welders know the NDE result within a few minutes. In this way they can timely adjust welding parameters in order to avoid defects. Existing Good Workmanship Criteria have been formulated with the capabilities and drawbacks of conventional NDE methods in mind. Radiography is good at detecting voluminous defects, but more or less limited on planar defects. Manual ultrasonic inspection does the opposite.