Radiographic Film Evaluation

In radiographic testing (RT), X-rays or gamma rays are sent to the weld area and the defects within the weld are evaluated through the image recorded on the film.

Radiographic Film Evaluation According to EN Standards:

EN 1435: Covers how to perform radiographic examination, positioning of the beams, beam intensity and position of the film.

EN ISO 17636-1 and EN ISO 17636-2: Defines the quality levels of the film, defect types and acceptability criteria.

Defect Classification: According to EN norms, the type and size of the defects are determined and evaluated according to the acceptability criteria. The source is accepted or rejected according to the size and distribution of defects such as pores, cracks and slag residue.

Evaluation Process: On the radiographic film, the presence of defects is detected by density differences or shadows. The location, size and type of possible defects within the weld are determined by interpreting the dark or light areas on the film.

This evaluation is performed for quality control purposes to ensure the durability of welded structures and requires the operator to be proficient in EN standards.