Iso 17637 Pdf May 2026
If direct access is blocked, the standard allows for mirrors, boroscopes, fiber-optic cables, or cameras. 3. Personnel and Equipment
The standard applies to the visual inspection of welds the welding process: iso 17637 pdf
The surface must have a minimum white light intensity of 350 lx , though 500 lx is recommended for better visibility. If direct access is blocked, the standard allows
For direct inspection, the eye should be within 600 mm of the surface. If direct access is blocked
