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Noise - Recommended Exposure Limits (REL)

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The National Institute for Occupational Safety - NIOSH - Recommended Exposure Limit - REL - for occupational noise exposure is

  • 85 decibels, A-weighted, as an 8-hr Time-Weighted Average -TWA - (85 dBA as an 8-hr TWA)

Note! Exposures at and above this level are considered hazardous.

Exposure to continuous, varying, intermittent, or impulsive noise shall never exceed 140 dBA.

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Related Topics

• Acoustics

Room acoustics and acoustic properties. decibel A, B and C calculations. Noise Rating (NR) curves. Sound transmission through walls. Calculate sound pressure, sound intensity and sound attenuation.

Related Documents

Decibel A, B and C

Sound pressure filters that compensates for the hearing sensed by the human ear.

Noise - Maximum Daily Dose Level

Maximum daily noise dose level when exposed to periods with different levels.

Noise Exposure - Permissible Levels and Duration

Exposure to noise should be controlled so that it is less than a maximum combination of exposure level and duration.

Sound - Leq - Equivalent Level

The EPA Equivalent Sound Level - Leq - quantifies the noise environment to a single value of sound level for any desired duration.

Sound Pressure Level - OSHA A-Weighted per Day

OSHA maximum A-weighted sound pressure levels allowed per day.

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