Glossary
Standards and regulations
EU Directive 2003/10/EC
Also known as 2003/10/EC, EU noise directive, Physical Agents (Noise) Directive.
EU Directive 2003/10/EC (also called the Physical Agents (Noise) Directive) sets workplace noise-exposure limits across EU Member States. Three thresholds matter:
- Lower exposure action value — 80 dBA daily (Member States must provide hearing protection)
- Upper exposure action value — 85 dBA daily (must be used, engineering controls considered)
- Exposure limit value — 87 dBA daily (must not be exceeded, even with hearing protection)
Industrial sonic-horn implications
The directive applies to all EU industrial workplaces. Workplaces with installed sonic horns must conduct noise-risk assessments, often deploying sound-attenuation enclosures, implementing operator-distance restrictions during horn firing, and requiring hearing protection in adjacent areas.
Comparison with US OSHA
| Threshold | EU 2003/10/EC | US OSHA 29 CFR 1910.95 |
|---|---|---|
| Lower action | 80 dBA | — |
| Upper action / PEL | 85 dBA | 90 dBA |
| Exposure limit | 87 dBA | — |
The EU directive is more stringent than the US OSHA standard in absolute terms, particularly at the upper action level.
Related terms
Related terms
- OSHA 29 CFR 1910.95OSHA 29 CFR 1910.95 sets US occupational noise exposure limits. The action level is 85 dBA TWA; the permissible exposure limit is 90 dBA TWA. Calculated from time-weighted average exposure.
- Sound pressure levelSPL is the logarithmic measure of sound pressure in decibels relative to a 20 µPa reference. Industrial sonic horns operate at 140–180 dB SPL.
- Sound-attenuation enclosure (sonic horn)A sound-attenuation enclosure surrounds the sonic horn to reduce SPL at the operator station. Typical 10–25 dB reduction; required where horn proximity exceeds OSHA / EU action levels.