Control Of Styrene Vapor During Hull Fabrication In Large Boat Production - Final Report.
NIOSH 1982:119 pages
Industrial hygiene surveys were conducted to evaluate control strategies for employee exposures to styrene (100425) during large boat manufacturing (SIC-3732). The fiberglass reinforced plastic boat construction process was assessed. Potential health hazards were determined for styrene and acetone (67641). Personal and air samples were collected and ventilation measurements were made. Control strategies included dilution, local exhaust, and push/pull ventilation. The three factories surveyed also used personal protective equipment, safety equipment, protective clothing, respiratory devices, and work practices designed to protect employees. The mean styrene exposure for all workers was 27 parts per million (ppm), but peak values ranged from 62 to 97ppm within the three facilities. The OSHA permissible exposure limit (PEL) was 100ppm for styrene and 1000ppm for acetone. Acetone exposures ranged from 14 to 102ppm. The dilution system was the most common approach to ventilation, but all workers were still exposed to low concentrations of styrene. Local exhaust systems offered greater control than dilution systems, but changed air at a higher rate. Styrene emissions were localized at the point of the air slots and rose in the winter. The push/pull ventilation system was the most sophisticated and energy efficient of the control methods.
NIOSH-Author; Workplace-studies; Exposure-levels; Toxic-vapors; Occupational-exposure; Industrial-hygiene-programs; Air-sampling; Industrial-safety;
NTIS Accession No.
Division of Physical Sciences and Engineering, NIOSH, Cincinnati, Ohio, 119 pages, 41 references