CAOHC - Council for Accreditation in Occupational Hearing Conservation Practice Test
CAOHC Hearing Protection Device Fitting 2
What is the Noise Reduction Rating (NRR) and how is it used?
Select your answer
A
A laboratory-tested attenuation rating used with a correction formula to estimate real-world protection
B
The actual noise reduction achieved in the workplace under all conditions
C
A rating assigned by OSHA inspectors after workplace testing
D
The maximum frequency the protector can block
Hint