A NIOSH health-hazard evaluation at a water-treatment plant investigated hydrated-lime dust released during silo loading and maintenance, including dust deposited throughout the handling room.
Source: CDC/NIOSH: HETA 98-0217-2768 — Puerto Rico water-treatment hydrated-lime evaluation ↗Dust entry
Water-treatment hydrated-lime dust
Hydrated-lime particulate released while loading, conveying, or maintaining lime silos in water-treatment facilities.
Airborne form
dust
The form describes what is suspended in air at the point of exposure. A material can produce more than one form, such as dust during handling and fume during heating.
Health effects
respiratory irritationeye irritationskin irritationparticulate exposure concern
Evidence
Controls
- enclosed lime transfer
- silo containment
- local exhaust ventilation
- preventive maintenance
- skin and eye protection
- appropriate respiratory protection