| Noise
levels are measured in decibels [dB(A)] the examples below give an indication
of common noise levels. |
- Normal
Conversation at 3 feet 50dB(A) At these levels noise can cause
-
General
Office Work 60dB(A) disruption in the working
- environment
- Photocopying
Machine 70dB(A) but is unlikely to cause hearing
- Damage
- Traffic
Noise / Welding 80dB(A) At these levels damage to hearing is
-
Lathes,
Typical Processing Plant 90dB(A) likely to occur
- Pneumatic
Road Drills, Chain Saws 100dB(A)
- Jet
Engines, Riveting Drop Forging 130dB(A)
|
| It
should be noted that:- |
- A
10 dB(A) increase in noise level means a 10 fold increase in intensity
-
A 3 dB(A) increase in noise level means the intensity is doubled.
- A
10 dB(A) reduction in noise reduces the intensity by a 1/10th
-
A 3 dB(A) reduction in noise reduces the intensity by 1/2
|
| Therefore
it can be seen that if you can reduce your noise levels by only a little bit ,
the intensity can be reduced by quite a bit. |
| Section
Index |