Discuss how Prevention through Design could be used to reduce the risks associated with these operations
Unit VIII Project
Read the background and scenario descriptions in Sections I and II of the instructions. Prepare a paper addressing each
of the subsections of Section III. Make sure you read each section completely and carefully before preparing your paper.
I.
Background
Acme International has a small manufacturing shop that includes two welding stations and a separate paint room. Two
welders produce small components for automobiles using stainless steel and MIG welding. After grinding has been
performed in the welding bays, the parts are painted in the paint room. The only ventilation present is a ceiling fan in each
room that is used for general dilution ventilation.
Note: Because of specifications from their cli
ent, substitution is not a viable control method for either the welding or
painting operations.
An industrial hygienist (IH) recently conducted air monitoring at the facility. In the welding bays, the IH conducted initial
monitoring with a personal sample
collected on each welder and analyzed for hexavalent chromium (Cr
+6
). The results
showed that time weighted average (TWA) exposures were 6.2 micrograms per cubic meter (μg/m
3
) and 6.6 μg/m
3
. The
OSHA TWA PEL is 5 μg/m
3
with an action level of 2.5 μg/m
3
.
MOS 5201, Safety Engineering
3
The paint area uses primer and paint containing benzene, ethyl benzene, toluene, and xylene. Workers in the area also
use acetone on rags to clean surfaces. One employee was sampled for the entire work shift. A second employee was
sampled for 15 minutes (S
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