OSH 6302 Unit 6 Activity

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Jan 9, 2024

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docx

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1 Acme Auto Parts Engineering Controls Christian Hallock Columbia Southern University OSH 6302 Dr. Boothe March 16, 2023
2 Acme Auto Parts Engineering Controls The ACME Automotive Parts (AAP) organization had several areas exceed the operational exposure levels of contaminants and noise for staff. This report will serve as an analysis of the findings, broken into two parts. First will address the recommendations to utilize the general dilutions ventilation for machine lines, the use of local exhaust ventilation (LEVs) for the paint booths and hand welding stations. “Ventilation is used to control hazardous emissions and conditions and to control worker exposures to toxic agents” (Fuller, 2015 p. 160). The second part will address the engineering controls in the machine press areas. General Dilution Ventilation: Machine Lines The goal of dilution ventilation is to provide an environment where temperature and chemical contamination is maintained at appropriate levels (Fuller, 2015). General dilution ventilation is recommended for the machine line due to its simple operation. General dilution adds fresh air to the contaminated air and using fans moves the mix away from the work areas. This controls the amount of contamination to the worker. The process includes one fan blowing fresh air into the work area and another fan adjacent to the first, pulling the contaminated air and fresh air out of the work area, thereby creating a work environment safe for staff. General dilution ventilation is an excellent method of engineering controls for this area because it effectively controls contamination in a larger workspace. This can be tested by utilizing calculations of air flow and volume of the work area, as well as conducting sampling of the air in the facility. Local Exhaust Ventilation: Paint Booth and Welding Stations
3 LEV is recommended for the paint and welding locations since the “system is placed near a contaminant generating source in order to capture it before spreading it into the room space” (Mahaki et al. 2022). The efficiency of the LEV is based on the design of the exhaust hood and placement of the system. Figure 1 (Queensland, 2019) In the painting booth areas, the downward draft system would be recommended, which moves air in from the ceiling and then pulled by the LEV through the floor and out to be filtered. These systems are highly effective in removing overspray and other contamination (Global Finishing Solutions, 2022).
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