Noise induced hearing loss
Noise is usually unwanted and different exposures to noise may result in
different effects to a persons hearing depending on the noise level. Low level
noise consists mainly of speech, but at higher levels of noise, physiological
effects on your hearing as well as possible hearing loss and/or tinnitus can
occur. Choosing the right earmuff is key in protecting your hearing.
Proper use of earmuffs
The use of earmuffs is detailed in the Occupational Noise Exposure Standard - 29 CFR 1910.95
and Section (i) of the standard states
Employers shall make hearing protectors available to all employees
exposed to an 8-hour time-weighted average of 85 decibels or greater
at no cost to the employees
The Noise Reduction Rating (NRR) is the maximum number of decibels (db)
the earmuff will reduce the sound level when worn. Section (j) states that the
hearing protector should have a NRR sufficient to reduce the employee's
exposure to a Time Weighted Average (TWA) of 90 dB (decibels) (or 85 dB
for employees who have had a standard threshold shift). Appendix B of the
same standard also provides some correction factors when using the NRR to
asses the adequacy of the hearing protector.
Earmuffs are equipped with rigid cups with soft cushions which seal
around the ear to block noise from entering. Earmuffs that have a higher
NRR tend to be bulkier (with larger cups), than those with a lower NRR rating.
The earmuff is typically made from plastic, which makes them ideal for
work around electrical hazards or they are made from a combination of
plastic and metal for added durability.
These earmuffs feature the same protection as standard earmuff but
have other features such as an AM/FM radio, two-way radio reception or
amplification of low sound levels built right in.
Hearing Protection Selection Guide
Check out our customer resource center for more information on hearing protection selection.
Our selection of AM FM radio earmuffs include the Peltor WorkTunes, Peltor Alert, Peltor WTD2600, and Peltor FM WorkStyle (FM Only).