What should be provided to prevent passers-by from getting arc eye during welding activities?

To effectively prevent passers-by from getting arc eye during welding activities, welding curtains are designed specifically for this purpose. Arc eye, or photokeratitis, can occur when the eyes are exposed to intense ultraviolet (UV) light emitted during the welding process. Welding curtains are made from materials that can absorb or reflect this harmful radiation, significantly reducing the risk of exposure for individuals nearby.

In contrast, while screens can provide some protection by obstructing the view of the welding arc, they may not be as effective in blocking harmful UV rays if they are not specifically designed for welding. Safety goggles are essential for the welders themselves to protect their eyes from the bright arc and harmful sparks, but they do not provide protection for those who are not wearing them, such as passers-by. Noise barriers are unrelated to protection from UV light and are typically used to mitigate sound rather than to provide vision protection. Therefore, welding curtains are the appropriate choice to create a safe environment for those in proximity to welding activities.