Health Hazard Control Technology Assessment of the Silica Flour Milling Industry

摘要

Control technology assessment was conducted in three silica flour mills (SIC-0723) to evaluate existing control technology procedures, and new and innovative control strategies. Emphasis was limited to exposure control during packing, handling, and shipping of flour products. Atmospheric dust concentrations were measured. Ventilation and air flow pattern measurements were evaluated. Standard ventilation and housekeeping procedures kept the silica (14808607) dust concentrations below the American Conference of Governmental Industrial Hygienists' recommended concentration of 100 micrograms per cubic meter in most areas. The authors recommend immediate cleaning of product spills, proper bag handling techniques, vacuum cleaning of clothing, preventive maintenance, and environmental and medical monitoring programs. An effective respirator protection program is needed.