For direct inspection, the eye should be within 600 mm of the surface.
The standard applies to the visual inspection of welds the welding process: iso 17637 pdf
If direct access is blocked, the standard allows for mirrors, boroscopes, fiber-optic cables, or cameras. 3. Personnel and Equipment For direct inspection, the eye should be within
Assessing the finished weld's profile, dimensions, and surface integrity. 2. Key Technical Requirements For direct inspection
Checking joint preparation, cleanliness, and assembly.
The angle of the eye relative to the surface should not be less than 30° .
Verifying cleanliness between runs and identifying visible defects as the weld is built.