A welding inspector is observing a welder performing shielded metal arc welding (SMAW) on a mild steel pipe in an open-air environment. The inspector notices the welder is wearing standard safety glasses with side shields but no additional eye protection. What is the primary safety concern regarding eye protection in this scenario?
- AThe safety glasses are insufficient to protect against infrared radiation.
- BThe safety glasses do not provide adequate protection from intense visible light and ultraviolet radiation.
- CThe safety glasses will not prevent slag from entering the welder's eyes.
- DThe safety glasses are not rated for impact protection during welding.
Show answer & explanationAnswer & explanation
Correct answer: B. The safety glasses do not provide adequate protection from intense visible light and ultraviolet radiation.
Standard safety glasses protect against impact but do not offer sufficient protection from the intense visible light, ultraviolet (UV), and infrared (IR) radiation produced by arc welding, which can cause arc eye or flash burn. Specialized welding helmets or goggles with appropriate filter lenses are required.
Why the other options are wrong
- A. While infrared radiation is a concern, the primary and most immediate damage from arc flash comes from UV and intense visible light.
- C. While slag is a hazard, the most critical and immediate eye protection need in arc welding is against the radiation.
- D. Most safety glasses offer impact protection, but this is secondary to the need for radiation protection in arc welding.
Arc Flash Eye Protection
Specialized eye protection, such as welding helmets or goggles with appropriate filter shades, is essential to protect against the harmful ultraviolet (UV), infrared (IR), and intense visible light radiation produced by arc welding processes.
- UV radiation causes 'arc eye' or 'welder's flash'.
- IR radiation can cause retinal burns and cataracts.
- Visible light intensity requires filtration to prevent temporary blindness and eye strain.
- Standard safety glasses are insufficient for arc welding.
Memory trick: UV, IR, and Bright Light: Arc welding's eye-damaging trinity.