Page 35 - 2024 ASAF Catalog

H E A R I NG P R O TE C TION

SAFET Y

TRPX™ 29 Earmuff Silencer™ Def-Guard™ 23 Earmuff
A premium hearing protection with a Rugged construction provides durability Has adjustable headband slides to fit
soft, lightweight, extra long padding in a wide range of environments. all sizes. Can be worn with earplugs
on headband. Dielectric design. Padded headband. for maximum hearing protection.
(NRR) 29 dB (NRR) 26 dB (NRR) 25 dB
#TR29-BX 1 Pair #SL013CS 1 Each #DF0310HC 1 Each

OSHA STANDARD CFR 1910.95 (i) (3)
Employees shall be given the
UNDERSTANDING opportunity to select their hearing
protection from a variety of suitable
HEARING PROTECTION hearing protectors provided by the
employer.

Noise Reduction Rating (NRR) is a unit of measurement used to determine the effectiveness of
hearing protection devices to decrease sound exposure within a given working environment.
For example, if you are working with a bulldozer where the level of noise exposure is 100 dB and
you are wearing earplugs with an NRR 33dB, your new level of noise exposure is 87 dB. You take
the NRR number (in dB), subtract seven, and then divide by two. Given the previous example,
your noise reduction equation would look like the following: (33-7)/2 = 13.

Hearing protection should be worn at these noise and exposure levels:
85 decibels (dBA) for more than 8 hours
90 decibels (dBA) for more than 4 hours
100 decibels (dBA) for more than 1 hour

NOISE LEVEL CHART
Decibel Level Common Sound Examples S

Conversation Forklift Bulldozer Jackhammer A
F
E
T
Y

Rain Alarm Hair Table Car Chain Threshold
Fall Clock Dryer Saw Horn Saw Of Pain

Please Ask Your Service Representative.
33
33