| Segregation |
| Noise source |
Intervention |
Follow‐up |
Initial noise level |
Noise level after |
Reference ID |
| Main production area of bakery |
Re‐routing pedestrian traffic, signage and training |
not reported |
94 dB |
below 85 dB |
HSE 2013 |
| Bowl chopper and mincers |
Moved from main production area to an isolated area |
not reported |
88–94 dB |
below 85 dB |
| Basket‐washing machine in main bakery |
Moved to a separate building |
not reported |
88 dB |
Noise source removed |
| High‐pressure air‐compressor |
Located in a separate room |
not reported |
110–112 dB |
60–70 dB outside room |
| Vibrating cap‐hoppers |
Located in separate enclosure |
not reported |
Above 90 dB |
Noise source removed |
| Air‐compressor |
Located in separate, unmanned room |
not reported |
94–95 dB |
80 dB |
| Pet food processing area |
Solid block wall with acoustic panelling between processing and packaging area |
not reported |
95 dB |
Below 85 dB |
| |
Number of cases: 7 |
mean before |
mean after |
mean reduction |
| Noise level dB |
97.1 dB |
80.0 dB |
17.1 dB |
