Control technology for falling solids at Rohm and Haas, Louisville, Kentucky.
Cincinnati, OH: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control, National Institute for Occupational Safety and Health, ECTB 154-10, 1987 Feb; :1-32
A control technology study was carried out by NIOSH at the Rohm and Haas acrylic resins facility (SIC-2821) in Louisville, Kentucky, to examine the relationship between worker dust exposure and dustiness test results, and to determine if exposures can be estimated on the basis of material properties. Tests were done in the packaging room for KV-2 acrylic resin (9003014). Air sampling was done at three packaging locations and at a control location for background. For dustiness testing, the Heubach test and the Midwestern Research Institute (MRI) test were conducted. Data was obtained individually for six bulk samples. The highest mean exposure was 15.8mg/m3, which was significantly higher than those of the other five samples. This sample also had the highest dustiness by both tests, the largest fraction of fines and the smallest mean particle size. Overall, there was a significant correlation between mean dust exposures and dustiness test results, although tolerance limits of the model were high due to high variability in dust exposure. Material properties of increasing fine content and decreasing particle size were correlated with increasing dustiness and dust exposure; the authors caution that particle cohesion may influence this relationship. The Heubach test was found to be superior to the MRI test. The authors recommend careful use of the regression analysis data and suggest that predictions of worker exposure may only be valid under conditions identical to those of this study.
NIOSH-Author; NIOSH-Survey; Field-Study; Region-4; Airborne-dusts; Dust-exposure; Acrylics; Dust-analysis; Workers; Workplace-studies; Physical-properties
Field Studies; Control Technology
NTIS Accession No.
National Institute for Occupational Safety and Health