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· NOISE
CONTROL AND HEARING CONSERVATION PROGRAM
Ø Notices
Where a worker is exposed to a sound level
of 90 decibels (dBA) or greater the employer must take measures to reduce the
sound level below 90 dBA. Where it’s not practicable to take such measures,
reduce the time a worker is exposed or provide the worker with hearing
protection.
Noise exposure limits are shown in the
following table (from Industrial Establishments Regulation 851/90, 139)
|
Column 1 |
Column 2 |
|
Sound level in Decibels |
Duration – Hours per 24-Hour Day |
|
90 |
8 |
|
92 |
6 |
|
95 |
4 |
|
97 |
3 |
|
100 |
2 |
|
102 |
1
½ |
|
105 |
1 |
|
110 |
½
|
|
115 |
¼
or less |
|
higher
than 115 |
No
exposure |
NOISE CONTROL AND
HEARING CONSERVATION PROGRAM
Provide hearing protection to any worker who is exposed to a sound
level of 115 dBA or higher.
Hearing protection must be able to reduce the sound level below the
sound level in Column 1 of the Table above for the exposure corresponding to
the time shown in Column 2. (Industrial Establishments Regulation 851/90, 139)
Post clear and visible warning signs at the approaches to any area
where the sound level is more than 90 dBA. The signs must show the daily
exposure for the particular sound level that is permitted AND that hearing
protection must be worn when the permitted daily exposure is exceeded. For
example, if the sound level in an area is 100 dBA, the sign must show that the
daily exposure is 2 hours or less, and that hearing protection is required for
workers who are in the area for more than that time. (Industrial Establishments
Regulation 851/90, 139)
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