A Study of Worker Exposure from a Hand-Held Contaminant Source in a Simulated Spray Booth Operation
Public Deposited- Last Modified
- February 28, 2019
- Creator
-
Lackey, Bradley D.
- Affiliation: Gillings School of Global Public Health, Department of Environmental Sciences and Engineering
- Abstract
- Tracer gas concentrations generated from a hand-held source are measured in the breathing zone of a mannequin, and for an elliptical cylinder positioned in a wind tunnel. Effects on breathing zone concentration due to worker position relative to the direction of airflow and a workpiece are examined. Flow visualization by the smoke wire technique is performed. Worker position was found to be statistically significant in breathing zone concentration. Positioning the worker with the air flow from the side results in a drop of roughly two to three orders of magnitude compared to positioning the worker with the airflow from the back. Interaction was noted between worker position and airflow rate. Tracer gas concentrations were lower in the breathing zone of the mannequin than for the cylinder. The placement of an object downstream of the worker when airflow is from the back resulted in a roughly two-fold increase in breathing zone tracer gas concentration when compared to predicted values with a worker only. Positioning a worker sideways to the airflow appears to result in a substantial decrease in contaminant exposure. Applications and limitations of the results are discussed.
- Date of publication
- August 1993
- DOI
- Resource type
- Rights statement
- In Copyright
- Advisor
- Todd, Lori A.
- Flynn, Michael
- Kamens, R. M.
- Degree
- Master of Science in Public Health
- Academic concentration
- Industrial Hygiene
- Degree granting institution
- University of North Carolina at Chapel Hill
- Graduation year
- 1993
- Language
- Deposit record
- c2589085-57f7-4434-bf45-a2666ba162b9
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