Safety and power · safety
Hearing protection rating
Also known as NRR.
A laboratory-derived attenuation rating used to estimate, not guarantee, workplace hearing protection.
Safety notes
- Apply the jurisdiction’s derating method, fit devices correctly, and verify protection against measured exposure.
- Applicable law, permits, collective agreements, venue rules, and qualified-person decisions take precedence.
In practice
Apply the jurisdiction’s derating method, fit devices correctly, and verify protection against measured exposure.
Explore related entries
Sources
- Recommended Practices for Safety and Health Programs · Occupational Safety and Health Administration
- Safety Bulletins · Contract Services Administration Trust Fund
Educational reference only. Requirements vary by jurisdiction, employer, venue, and production context.