Wednesday, July 10, 2013

Permissible exposure limits for noise

THE SCHEDULE

Regulation 2(2)

PERMISSIBLE EXPOSURE LIMITS FOR NOISE Sound pressure level, dB(A)
Maximum duration per day
1.
82
16 hours
2.
83
12 hours 42 minutes
3.
84
10 hours 5 minutes
4.
85
8 hours
5.
86
6 hours 21 minutes
6.
87
5 hours 2 minutes
7.
88
4 hours
8.
89
3 hours 11 minutes
9.
90
2 hours 31 minutes
10.
91
2 hours
11.
92
1 hour 35 minutes
12.
93
1 hour 16 minutes
13.
94
1 hour
14.
95
48 minutes
15.
96
38 minutes
16.
97
30 minutes
17.
98
24 minutes
18.
99
19 minutes
19.
100
15 minutes
20.
101
12 minutes
21.
102
9 minutes
22.
103
7.5 minutes
23.
104
6 minutes
24.
105
5 minutes
25.
106
4 minutes
26.
107
3 minutes
27.
108
2.5 minutes
28.
109
2 minutes
29.
110
1.5 minutes
30.
111
1 minute
31.
112
56 seconds
32.
113
45 seconds
33.
114
35 seconds
34.
115
28 seconds
35.
116
22 seconds
36.
117
18 seconds
37.
118
14 seconds
38.
119
11 seconds
39.
120
9 seconds
40.
121
7 seconds
41.
122
6 seconds
42.
123
5 seconds
43.
124
4 seconds
44.
125
3 seconds
45.
126 to 127
2 seconds
46.
128 to 129
1 second
47.
130 to 140
<1 second.

Notes:

1. The duration of exposure is to be obtained by adding up the total duration of exposure per work day, whether there is one continuous exposure or a number of separate exposures.

2. Every continuous, impulsive or impact noise of sound pressure levels from 80 dB(A) to 140 dB(A) must be included in the computation of the noise exposure of the person.

3. The permissible exposure limit is exceeded if a person is exposed to noise at a sound pressure level listed in the Table above in excess of the corresponding duration.

 

Made this 20th day of July 2011.