Mutt Muffs DDR337 User manual

Brand: Mutt Muffs

Model: DDR337

Type: User manual

Mutt Muffs DDR337 are a great choice for hearing protection. They are lightweight and comfortable to wear for long periods of time, making them ideal for use in noisy environments such as construction sites or factories. They also have a high noise reduction rating (NRR) of 33, meaning they can effectively reduce noise levels by up to 33 decibels. This makes them ideal for use in very noisy environments, such as when using loud machinery or power tools.

Some of the key features of the Mutt Muffs DDR337 include:

Lightweight and comfortable to wear
Adjustable headband for a secure fit
High noise reduction rating (NRR) of 33

Some of the key features of the Mutt Muffs DDR337 include:

Lightweight and comfortable to wear
Adjustable headband for a secure fit
High noise reduction rating (NRR) of 33

Modified6/7/2006 Page1 of 3

TheUn iversityofTexasat Dallas

HearingProtectionSafetyManual

Modified6/7/2006 Page2 of 3

HEARINGPROTECTIONMANUAL

I. PURPOSE

Thissectionistobeaguideforprotectionfromhearingloss.Protectionofhearing

inindustrialnoisecanbeaccomplishedthroughcontrolofnoiseexposureand

throu ghtheuseofhearingprotectiondevices.

II. PROTECTIVEEAREQUIPMENT

Ifengineeringandadmini strativecontrolsarenotpossi ble,thenproperprotective

hearingprotectionshallbeprovided.

Sincetheprincipalentranceforsoundpressureontheeardrumisthroughthe

externalearcanal,blockingthepassageofsoundwavestoth eear drumprovidesan

effectivemethodofreducingthesoundpressurereachingtheinnerear.

Twotypesofearpr otectionaree arplugsandearmuffs.

A. EarPlugs

1. Properlyfittedea rplugscanprovidenoiseattenuationonthe

orderof30decibels(dB)overaspecificfrequencyband.Itis

importanttomatchthefrequencybandoftheearplugtothe

noisehazard.

2. Earplugsareef fectiveonlyifproperlyseated.Instructthe

employeestoinserttheplugsbyteachingthemtopulltheear

upandback.

3. Earplugsmustbereseatedfromtimetotimeduringthecourse

oftheworkday sincenormalbodymovement(chewing,

yawning,talking)willcausethemtoworkloose.

4. Insertingearplugswillnotdamagetheearnorwill wearing 

themdamage theearcanaloreardrumifbotharedone

accordingtoinstructions.

5. Ifear plugsdonotfittightly,theywillnotprovideprotection.Ear

plugsmaybeuncomfortableforafewdays,butlikeanything

new,employeeswilleventuallygetusedtothem.

6. Earplugsshouldbewashedinsoapywarmwatereverythreeto

fourdays.Thedangerofirritationtotheskinlining theear

canalari sesfrompoorhygiene.

7. Earplugsmaybecomehard,orshrink;allemployeeswearing

earplugsshould beinstructedtoreportto thesupervisorwhen

thisoccursandtomakearrangemen tstoobtainanewpair.

8. Drycottondoesnotprovideanyearprotection.

Modified6/7/2006 Page3 of 3

Employeesmustbetoldtheyarerequiredtowearearprotectioninhazardous

conditions.

Mutt Muffs DDR337 User manual

Brand: Mutt Muffs

Model: DDR337

Type: User manual

Some of the key features of the Mutt Muffs DDR337 include:

Lightweight and comfortable to wear
Adjustable headband for a secure fit
High noise reduction rating (NRR) of 33

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Mutt Muffs DDR337 User manual

Mutt Muffs DDR337 User manual

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