Which of the following is a control method to protect from UV and IR radiation in welding operations?

• A. Welding curtains
• B. Time, distance, shielding
• C. Short durations
• D. Sunscreen creams/lotions

Answer: (A)

Radiant energy from the welding arc includes UV and IR that can harm eyes and skin, so protection relies on engineering controls that block or reduce exposure. Welding curtains provide a physical barrier between the arc and nearby workers or bystanders, absorbing or blocking much of the UV and IR radiation as well as heat. This makes them a direct, effective way to limit who is exposed to the arc’s radiant energy in a welding area.

While general principles like increasing distance or time shielding can help, they’re not as reliable or practical in many shop setups, and relying on shorter welding times isn’t a feasible protection strategy. Sunscreen creams don’t protect against the specific UV/IR and heat from welding, and aren’t appropriate safety measures in this context.