IS 12080:1987 is the Indian Standard (BIS) for recommendations for local exhaust ventilation systems in premises manufacturing products containing asbestos. This standard provides guidelines and recommendations for the design, installation, operation, and testing of local exhaust ventilation (LEV) systems. Its primary objective is to control and capture airborne asbestos fibres at the source within manufacturing premises, thereby minimizing occupational exposure and protecting worker health.
Recommendations for local exhaust ventilation systems in premises manufacturing products containing asbestos
BIM-relevant code. See the BIM Hub for ISO 19650, IFC, and LOD/LOIN frameworks used alongside it.
| Parameter | IS Value | International | Source |
|---|---|---|---|
| Basis for Design (Airborne Fibre Limit) | Approx. 2.0 fibres/ml (based on prevalent limits in 1987) | 0.1 fibres/cm³ (equivalent to 0.1 fibres/ml) | OSHA 29 CFR 1910.1001 |
| Minimum Duct Transport Velocity | 15 to 20 m/s for most asbestos dusts | 18 to 23 m/s (3500-4500 fpm) for heavy or average industrial dusts | ACGIH Industrial Ventilation Manual |
| Air Cleaner Filtration Efficiency | Fabric filter with efficiency >99% | HEPA filter with 99.97% efficiency at 0.3 micrometres | OSHA 29 CFR 1910.1001(g)(2)(ii) |
| Hood Type (Enclosing Booth) Face Velocity | 0.5 to 1.0 m/s (for manual operations) | 0.5 to 1.0 m/s (100-200 fpm) for booths with moderate activity | ACGIH Industrial Ventilation Manual |
| System Examination Frequency | Recommends 'periodical checking' and record keeping. | Mandatory 'thorough examination and test' at least every 14 months. | HSE ACOP L143 |
| Duct Material | Galvanized sheet steel is recommended. | Smooth, rigid, and corrosion-resistant material; galvanized steel is common. | ACGIH Industrial Ventilation Manual |