Arc (ultraviolet) radiation created by welding can

• A. be blocked by sunglasses
• B. burn unprotected eyes and skin
• C. have no effect on skin
• D. cause only eye irritation

Answer: (B)

Arc ultraviolet radiation from welding is intense and can damage exposed tissues. The welding arc emits UV light that can burn the eyes and the skin almost like a sunburn. If eyes are unprotected, this exposure can lead to arc eye (photokeratitis), a painful condition that irritates and can blur vision. Skin exposure can redden and burn quickly, and repeated exposure increases risks over time.

That’s why the statement about this radiation is best understood as something that can harm both eyes and skin when protection isn’t used. Wearing proper protection is essential: a welding helmet with a suitable shade filter and UV-blocking lenses protects the eyes, while protective clothing and gloves shield the skin. Sunglasses alone aren’t enough for welding because they often don’t block the full spectrum or the intensity of UV from the arc, and they don’t cover the skin. Statements claiming no effect on skin or that it only irritates the eyes are incorrect, since UV exposure from welding can burn both eyes and skin.