OSH 6302 Unit 6 Activity
docx
keyboard_arrow_up
School
Columbia Southern University *
*We aren’t endorsed by this school
Course
6302
Subject
English
Date
Jan 9, 2024
Type
docx
Pages
7
Uploaded by JusticeField9974
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).
Your preview ends here
Eager to read complete document? Join bartleby learn and gain access to the full version
- Access to all documents
- Unlimited textbook solutions
- 24/7 expert homework help
4
Figure 2
(Global Finishing Solutions, 2022)
In the welding stations, a system where the hood is directly at the site of work is recommended to adequately move contaminants from the work space to be filtered. Per the Occupational Health and Safety Administration 1926.353:
Local exhaust ventilation shall consist of freely movable hoods intended to be
placed by the welder or burner as close as practicable to the work. This system
shall be of sufficient capacity and so arranged as to remove fumes, smoke at the
source, and keep the concentration of them in the breathing zone within safe
limits as defined in subpart D of this part. The airflow calculation for this hood system with the opening measuring W=12inches or 1 foot, L=24 inches or 2 feet, and placed 24 inches (2 feet) from the source with a desired capture velocity of 100 feet per min (ft/min) is as follows:
Q = V(10x2+A)x
Q =100 (10 x 22+ 2 ft2)
5
Q =100(42 ft2)
Q = 4200 ft3/min
The only barrier to implementing the ventilation systems is monetary. The expense of the
systems must be considered by AAP. However, the expenses can be expected to be offset by the reduction in exposures, time off due to exposures, and medical expenses due to exposures. Engineering Controls: Machine Press
According to the National Institute of Safety and Health (NIOSH), “Noise controls can involve making physical changes to the equipment… (2023). Through the routine process of the machine press, vibration and excessive impacts were found to lead to excessive noise levels after
sampling was conducted. One engineering control that is recommended is the adaptation of the hydraulic press dampener. SUSPA.com states that, “Hydraulic dampers are damping elements that convert the kinetic energy of moving parts into thermal energy” (n.d.). By doing so, the control then limits the impact and any excessive vibrations caused by the machine. Another control is simply utilizing hearing protection for those working in the machine press areas. Once the controls are introduced, noise sampling can be conducted to ensure that the controls are maintained.
Conclusion
Acme Automotive Parts was found to have exceeded some exposure levels for their staff.
It is recommended that the above engineering controls be implemented to effectively control or limit the exposures to the contaminants. The purchase of the units and implementation of the methods provided will ensure the productivity of the facility and ensure the health and safety of the staff.
6
References
Global Finishing Solutions. (2022).
StackPath
. Globalfinishing.com.
https://globalfinishing.com/products/paint-booths-airflow/downdraft-paint-booths/
Fuller, T. P. (2015).Essentials of industrial hygiene. Itasca, IL: National Safety Council
Mahaki, M., Mattsson, M., Salmanzadeh, M., Hayati, A. (July 12, 2022). Experimental and
numerical simulations of human movement effect on the capture efficiency of a local
exhaust ventilation system. Journal of Building Engineering
https://discovery-ebsco-com.libraryresources.columbiasouthern.edu/c/iuzu2i/details/
fedsj5evzn?limiters=FT%3AN%2CRV%3AN%2CFC%3AN%2CFC1%3AN
%2CFT1%3AY&q=local%20exhaust%20ventilation
National Institute of Safety and Health. (2023, March 10).
Noise and Hearing Loss - Noise and
Occupational Hearing Loss | NIOSH | CDC
. Www.cdc.gov
.
https://www.cdc.gov/niosh/topics/noise/noise.html
Ventilation and protection in welding, cutting, and heating 1926.353
. (2019).
Occupational
Health and Safety Administration. Osha.gov.
https://www.osha.gov/laws-regs/regulations/standardnumber/1926/1926.353
Queensland, W. H., and S. (2019, October 22).
Local exhaust ventilation (LEV)
.
Www.worksafe.qld.gov.au
. https://www.worksafe.qld.gov.au/safety-and-prevention/creating-safe-work/managing-
risks/local-exhaust-ventilation-lev
SUSPA (n.d.). Dampers from SUSPA®
. Www.suspa.com
.
Your preview ends here
Eager to read complete document? Join bartleby learn and gain access to the full version
- Access to all documents
- Unlimited textbook solutions
- 24/7 expert homework help
7
https://www.suspa.com/us/products/hydraulic-dampers/