Table 1 Hazard grading classification with regard to OEL exceedance
Hazard | Hazard grade (3) | Dangerous grade (4) | |||
|---|---|---|---|---|---|
3.1 | 3.2 | 3.3 | 3.4 | ||
Chemicals (OELs vary between substances) | 1.1-3.0 OELs | 3.1–10.0 OELs | 10.1–15.0 OELs | 15.1–20.0 OELs | > 20.0 OELs |
Low fibrogenic aerosols (OEL > 2 mg/m3) | 1.1-3.0 OELs | 3.1-6.0 OELs | 6.1–10.0 OELs | > 10.0 OELs | none |
Whole body vibration (OEL 0.1 m/s2) | 2 OELs | 4 OELs | 6 OELs | 8 OELs | > 8 OELs |
Hand-arm vibration (OEL 2 m/s2) | 1.4 OELs | 2 OELs | 2.8 OELs | 4 OELs | > 4 OELs |
Noise (OEL 80 dBA) | 5 dBA | 15 dBA | 25 dBA | 35 dBA | > 35 dBA |