This document specifies acceptance levels for indications from imperfections in aluminium butt welds
detected by radiographic testing. If agreed, the acceptance levels can be applied to other types of welds
or materials.
The acceptance levels can be related to welding standards, application standards, specifications or
codes. This document assumes that the radiographic testing has been carried out in accordance with
ISO 17636-1 for RT-F (F = film) or ISO 17636-2 for RT-S (S = radioscopy) and RT-D (D = digital detectors).
When assessing whether a weld meets the requirements specified for a weld quality level, the sizes of
imperfections permitted by standards are compared with the dimensions of indications revealed by a
radiograph made of the weld.