Non-Ionization Radiation
Non-ionizing radiation refers to any type of electromagnetic radiation that does not carry enough energy to ionize atoms or molecules - that is, to completely remove an electron from an atom or molecule.
Non-ionizing radiation includes the spectrum of infrared (IR), microwave (MW), radio frequency (RF), and extremely low frequency (ELF) and ultraviolet (UV). Non-ionizing radiation is found in a wide range of occupational settings and can pose a considerable health risk to potentially exposed workers if not properly controlled, including skin cancer, eye damage, premature skin aging, and burns.
Lasers
Lasers commonly operate in the UV, visible, and IR frequencies. OSHA regulation 1926.54 requires employers to take precautions when exposed to non-ionizing laser energy including:
- Ensure only qualified and trained persons install, adjust, and operate laser equipment.
- If lasers are used that have a potential to give reflected light greater than 0.005 watts (5 milliwatts), use antilaser eye-protection devices.
- Use laser safety glass or goggles that provide sufficient protection for the wavelength of the laser, and have the optical density adequate for the energy involved.
- Ensure all laser goggles are labeled with the laser wavelengths for which use is intended, the optical density of those wavelengths, and the visible light transmission.
- If lasers are used, post standard laser warning placards in the area.
- Prohibit lasers from being used during conditions of rain, snow, dust, or fog.
Knowledge Check Choose the best answer for the question.
2-8. Which type of radiation can cause skin cancer or premature aging?
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