Field study personal respirable crystalline silica results: Average and associated confidence limits.Probability of chance causing the observed differences between the field study results and the published results in Table.Respirable dust, respirable crystalline silics, and inhalable dust sample results: Abrasive blasting with WIN nozzle.Schematic illustration of the Clemco Industries water injector systems, marketed as the Clemco Wetblast Injector System.Recent data complications of crystalline silica exposure levels during abrasive blasting in construction.Relative dust concentration measured with an aerosol photometer during wet abrasive blasting.Aerosol photometer measurements collected at stand for charging abrasive blasting pot.Filling the abrasive blasting pot with dry sand creates obvious dust emissions.A worker performs wet abrasive blasting on a wall panel at the Crane Way station.

At the small station, the worker performs wet abrasive blasting on fire exit stairs.Exposed aggregate after blasting building panels at the large station.At the large station, building panels are placed on blocks about 1 to 2 feet above the ground.Schematic illustration of Torbo Blasting system.Ultra high-pressure water is used to clean concrete surface on a parking ramp.

Schematic illustration of the Clemco Industries water injector systems, marketed as the Clemco Weblast Injector System.

Cross-sectional illustration of water induction nozzle (WIN).

Schematic illustration of water ring attachment for an abrasive blasting nozzle.

Surface area treated at large blasting station.

Thickness reduction attributed to abrasive blasting.

Personal and area concentrations of respirable dust, respirable crystalline silica, and inhalable dust.

Torbo Wet Abrasive Blasting Systems® Exposure Evaluation Criteriaĭocumentation of Test Conditions Air Monitoring Procedures The results of a field tests of a wet abrasive blasting device and its impact on the level of respirable crystalline silica dust.

Wet blaster nozzle diagram