Severe Irritationto the Ear120 dB

Severe Irritationto the Ear120 dB

Noise ThermometerSound Energy Doubles Every 3 dBExample: if a 90 dB noise is doubled, it measures 93 dB

0 dB

Fireworks162 dB

Handgun166 dB

ApolloLift-Off188 dB

Shotgun170 dB

Artillery Fire162 dB

Firecracker150 dB

BalloonPop157 dB

Jet EngineTake-Off150 dB

EngineBackfire140 dB

Noisy SqueezeToys135 dB

Bicycle Horn143 dB

DynamiteBlast140 dB

PigSqueal130 dB

Jackhammer130 dB

Auto Racing130 dB

OxygenTorch121 dB

Thunder120 dB

Hammeron Nail120 dB

Generator116 dB

RockConcert120 dB

Chainsaw118 dB

Jet Planeat Ramp120 dB

Stadium117 dB

Compactor116 dB

CryingBaby110 dB

Motorcycle105 dB

CDPlayer105 dB

AmbulanceSiren112 dB

ImpactWrench102 dB

Diesel TruckAccelerating114 dB

Bulldozer100 dB

PowerLawnmower94 dB

Subway90 dB

Table Saw93 dB

Cockpit ofPropellerAirplane88 dB

IndustrialFire Alarm95 dB

Forklift87 dB

SmokeAlarm85 dB

Blender85 dB

Elevator85 dB

Hair Dryer 80 dB

Handsaw85 dB

RingingTelephone82 dB

VacuumCleaner74 dB

AlarmClock75 dB

GarbageDisposal80 dB

Lathe81 dB

SewingMachine60 dB

MicrowaveOven58 dB

Dishwasher60 dB

BackgroundMusic50 dB

Rainfall50 dB

NormalConversation60 dB

Large Office50 dB

FlowingStream50 dB

Paper Rustling50 dB

Transformer50 dB

QuietLibrary40 dB

QuietOffice40 dB

QuietResidentialArea40 dB

Refrigerator43 dB

AudibleWhisper30 dB

NormalBreathing10 dB

M1 Rifle161 dB

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Immediate Physical Damage

160 dB

Immediate Physical Damage

160 dB

Immediate Pain Threshold

130 dB

Immediate Pain Threshold

130 dB

Unprotected NoiseExposure of AnyDuration Not

Permitted Above This Level115 dB

Unprotected NoiseExposure of AnyDuration Not

Permitted Above This Level115 dB

Extremely Loud100 dB

Extremely Loud100 dB

Hearing ProtectionRequired by OSHA

90 dB

Hearing ProtectionRequired by OSHA

90 dB

Ear DamagePossible85 dB

Ear DamagePossible85 dB

Non-Hazardous65 dB

Non-Hazardous65 dB

Comfortable50 dB

Comfortable50 dB

Threshold of Audibility20 dB

Threshold of Audibility20 dB

OSHA Permissible Exposure Limits

Non-Occupational Noise Occupational Noise

8 Hours

4 Hours

1 Hour

15 Min

30 Min

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HP.202 08/05 RPI

2 Hours

0 dB

Sperian Hearing Protection, LLC • A Honeywell Company • 7828 Waterville Road, San Diego, CA 92154 • ph. 800/430-5490 • fax 401/232-3110 • www.howardleight.com