AIT Welder 2nd Period Practice Test 2026 - Free Welder Practice Questions and Study Guide

UV radiation from welding poses two main hazards: damage to the eyes and burns to the skin. The intense arc emits ultraviolet light that can cause arc eye (photokeratitis) and other eye injuries, and it can burn exposed skin similar to a sunburn. To keep these risks in check, use a helmet with a shade-appropriate filter that blocks UV and IR, and wear protective clothing and flame-resistant gloves to cover the skin. Barriers like welding curtains or screens help shield others and reduce reflective UV exposure in the work area. Relying on sunglasses or sunscreen alone isn’t enough because they don’t provide the comprehensive, face-to-face protection needed during welding.