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Notice
This presentation is provided to all Educational Service District 101 (ESD 101) schools at no cost.
This presentation contains copyrighted materials purchased by ESD 101 for the exclusive use of training school personnel within ESD 101.
This presentation may not be reproduced except to print “handouts” or “notes pages” for use during training within ESD 101 school districts.
If the school district does not have Microsoft’s PowerPoint software available, a PowerPoint viewer can be downloaded from the internet at no cost.
Questions may be directed to the ESD 101 Risk Manager.
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Effects of noise
Causes hearing loss
Amount of damage depends upon the intensity of the noise and duration of exposure
Noise-induced hearing loss can be temporary or permanent
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Effects of noise
Prolonged exposure generally causes permanent damage
Noise-induced permanent threshold shift is not reversible/cannot be medically treated
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Effects of noise
Noise-induced hearing loss typically starts with hearing threshold shifts in the higher frequencies
The type of hearing loss can be identified and measured with audiometric examination
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Noise hazards
Noise is unwanted/unpleasant sound that may have a negative effect depending on:• loudness/frequency•duration of exposure•how old/healthy person is
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Noise hazards
Hearing protection must be provided when noise exceeds an eight-hour time-weighted average of 85db
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Noise hazards can cause:
Drowsiness and irritability
Inability to hear important instructions
High blood pressure, ulcers, headaches
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Engineering controls
Isolate noisy machinery in a separate area
Place machinery on rubber mountings
Use sound-absorbing acoustical tiles
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Engineering controls
Arrange work schedules to reduce employee exposure to noise
Inform supervisors of unpleasant/unacceptable noise levels
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Hearing protection
Factors taken into account when selecting hearing protection devices include:•noise hazards•noise frequencies• fit and comfort•noise reduction rating
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Purpose/procedure for audiometric testing
Checks a person’s hearing
Trained technician uses an audiometer to send sounds through headphones
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Purpose/procedure for audiometric testing
Person being tested responds to the sounds when they are first heard
Chart records responses
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Hearing protection makes common sense
You are ultimately responsible for your own hearing
You have the most to lose if you suffer hearing loss
Make sure earplugs fit properly
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Hearing protection makes common sense
Have an annual hearing test
Keep hearing protection devices in good operation
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