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Earplug safety

Lab Safety Advisor, November 1, 2006

As more and more equipment and mechanical devices enter the lab workplace, the noise factor becomes a problem. Eighty-five decibels over an eight-hour period is the maximum allowed without a hearing conservation program.

Earplugs should be made available to employees if they want them, however, they are mandatory if the decibel level exceeds 100.

Here is how to wear soft foam earplugs according to NIOSH:

1. Wash your hands before attempting to insert the earplugs.
2. Roll the earplug up into a small, thin "snake" with your fingers. You can use one or both hands.
3. Pull the top of your ear up and back with your opposite hand to straighten out your ear canal. The rolled-up earplug should slide right in.
4. Hold the earplug in with your finger. Count to 20 or 30 out loud while waiting for the plug to expand and fill the ear canal. Your voice will sound muffled when the plug has made a good seal.

Check the fit when you are done. Most of the foam body of the plug should be within the ear canal. Try cupping your hands tightly over your ears. If sounds are much more muffled with your hands in place, the earplug may not have sealed properly. In this case, take the earplug out and try steps 2-4 again.

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