20
Technical characteristics
Whenever the machines are used for work in environments where the daily noise level to which the
operators are exposed is higher than 80 dBA, the employer must take steps to apply all the measurements
necessary to safeguard the operator’s health. In particular, the operators must, if necessary, use all the
individual protection devices to protect themselves from the noise level.
The reading of the machine noise level was taken
from the “operator’s work place” (Fig. 20), with the
following methods and results:
20
METHODS OF MEASUREMENT
ISO 3746
M
CH 13
/E
T
Co
mp
a
c
t
M
CH 16
/E
T
Co
mp
a
c
t
M
CH 26
/E
T
Co
mp
a
c
t
M
CH 32
/E
T
Co
mp
a
c
t
Level of acoustic pressure at the operator’s work place
Level of acoustic power
Peak level
dB(A) 79,4
dB(A) 91,5
-
dB(A) 81
dB(A) 94,5
-
dB(A) 72,4
dB(A) 92,7
-
dB(A) 75
dB(A) 97,1
-
INSTRUMENTS
Bruel & Kjacr sound level integrating meter
Microphone for sound level meter
Gauge
Mod. 2231 cl. 1
Mod. 4155 cl. 1
Mod. 4230 cl. 2
Table 3
Summary of Contents for MCH 13/ET
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