S-2.1, r. 13 - Regulation respecting occupational health and safety

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134. Impact noise: In an establishment, the daily exposure of a worker to impact noise shall not exceed the number indicated in the following table:

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Sound level in Permitted number
dB linear as of impacts
peak value (per 8 hours)

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120 10,000
121 7,943
122 6,310
123 5,012
124 3,981
125 3,162
126 2,512
127 1,995
128 1,585
129 1,259
130 1,000
131 794
132 631
133 501
134 398
135 316
136 251
137 200
138 158
139 126
140 100
>140 0
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O.C. 885-2001, s. 134.