In case of arc welding, one should protect his eyes using

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ALP CBT 2 Fitter Previous Paper: Held on 23 Jan 2019 Shift 3
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  1. Dark glass screen 
  2. Mask
  3. Safety goggles
  4. Sun goggles

Answer (Detailed Solution Below)

Option 1 : Dark glass screen 
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Detailed Solution

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Explanation:

  • Welding arcs give off radiation over a broad range of wavelengths - from 200 nm (nanometers) to 1,400 nm (or 0.2 to 1.4 µm, micrometers).
  • This includes ultraviolet (UV) radiation (200 to 400 nm), visible light (400 to 700 nm), and infrared (IR) radiation (700 to 1,400 nm).
  • This is the reason that eyes need to be protected against both UV and Infra-Red rays.
  • Arc welding is a safe occupation when sufficient measures are taken to protect the welder from potential hazards.
    • Protective clothing
    • Wear ear muffs or plugs
    • Helmets and handheld face shields for skin protection
    • Dark glass screen for eyes protection

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