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1
GENERAL INFORMATION
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Section
1
1.6
NOISE LEVEL
Noise is a very important environmental concern at the work site.
Excessive exposure to high levels of noise may cause
injury
to the hearing, but the
sensitivity to hearing loss varies between individuals and must be taken into account in
specifying an allowable limit for noise exposure.
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A level of 90
dBA
is widely accepted as a criterion for 8Wday exposure to steady-state
broad-band noise.
The unprotected ear should not be exposed to noise levels higher than 120 dBA.
The noise of the machine comes from the following sources,
1. Saw blade during cutting
2. Wire brush unit
3.
Chip conveyor unit
4. Speed reducer
5. Hydraulic motor
/ pump
6. Belt transmissions variable speed motors
7. Blade motor
8. Drive wheels
9. Parts
not secured tightly causing mechanical vibration
The noise level of this machine has passed noise testing criterion (under 70 dBA).
Please refer to the system troubleshooting in section 10 if abnormal noise occurs.
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