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NOISE EXPOSURE SURVEY. Either the Mine Operator Or MSHA Can conduct a noise exposure survey on You. This presentation describes MSHA’s method. A PERSONAL NOISE DOSIMETER IS USED TO DETERMINE YOUR FULL SHIFT NOISE EXPOSURE.

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Presentation Transcript

Either the Mine Operator

Or MSHA

Can conduct a noise exposure

survey onYou.

This presentation describes

MSHA’s method.


A personal noise dosimeter is used to determine your full shift noise exposure
A PERSONAL NOISE DOSIMETER IS USED TO DETERMINEYOURFULL SHIFT NOISE EXPOSURE.


The dosimeter and its field calibrator will be currently calibrated
The Dosimeter and its Field Calibratorwill be currently calibrated.






The dosimeter and microphone cable should be located so as to minimize safety hazards and damage to the instrument.


The dosimeter should be placed on the shoulder that is normally between the principal noise source and your ear.


Microphone on the shoulder closest the to noise source
MICROPHONE ON THE SHOULDER CLOSEST THE TO NOISE SOURCE normally between the principal noise source and your ear.


Throughout your entire shift
Throughout Your normally between the principal noise source and your ear.entire shift

  • You must wear the dosimeter.

  • You must not transfer the dosimeter when changing tasks.

  • You must ensure that the microphone remains properly positioned.

  • You must guard it from damage.


Additionally, collaborative Sound Level readings maybe taken and recorded for each activity you perform during the work shiftin a manner that measures the different noise sources to which you ar exposed.


The sound level meter is likewise calibrated before and after your shift
The Sound Level Meter is likewise calibrated before and afteryourshift

Measurements are taken at Arms Length within 1 to 2 feet of your Ear, with the microphone pointed upward.

A dosimeter in the SLM mode may be substituted.


At the end of shift
At the End of Shift after

  • Dosimeter is removed

  • The data is read-out or downloaded

    • Overall noise exposures (Dose %);

    • Time Weighted Average (Sound Level dBA);

    • Length of survey (hours, minutes, seconds); and

    • Maximum Sound Level (dBA)


This information is used
This Information is Used after:

  • To determine if Action Level has been equaled or exceeded.

  • To determine if the Permissible Exposure Level has been exceeded.

  • To determine if the Dual Hearing Protection Level has been exceeded.


Your children can whisper to you now, after

Don’t make them shout at you in the future


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