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    • High Noise CommunicationHigh Noise Communication
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    • In-Suit CommunicationIn-Suit Communication
    • General Plant CommunicationGeneral Plant Communication
    • Plant Tour/Training CommunicationPlant Tour/Training Communication
    • Intrinsically Safe EnvironmentsIntrinsically Safe Environments
    • Hearing ProtectionHearing Protection
    • Social Distancing CommunicationSocial Distancing Communication
  • Products+
    • Talk Through Your Ears®Talk Through Your Ears®
    • Custom Hearing ProtectionCustom Hearing Protection
    • Radio Listening EarsetsRadio Listening Earsets
    • HeadsetsHeadsets
    • Lapel Speaker MicsLapel Speaker Mics
    • Cell Phone AccessoriesCell Phone Accessories
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    • Earmuffs & EarplugsEarmuffs & Earplugs
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FAQ

Does OSHA require companies to divide the Noise Reduction Rating (NRR or NRR-7) in half?

When it comes to assessing feasibility of engineering noise controls, OSHA requires that employers estimate real-world hearing protector performance by "de-rating" NRRs by 50%. However, when it comes to complying with hearing conservation program requirements, OSHA does not require de-rating the NRR (or NRR - 7 for A-scale noise measurements). Read more in our SoundBytes article.  

 

 

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Related FAQs
  • I've seen headsets and hearing protectors advertised as "OSHA approved" - what does this mean?
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  • What is the Noise Reduction Rating?
  • What is the Personal Attenuation Rating (PAR)?
  • Why do OSHA formulas require us to subtract 7 dB from the Noise Reduction Rating (NRR)?
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