UNIT III MOS 5201 1. What dimensions would you use for a booth-type hood if you wanted an exhaust rate of 1,000 cubic feet per minute and a capture rate of 100 feet per minute to capture organic vapors from a paint spray operation? Be sure to show your work. If you wanted to clean the air that you are capturing before exhausting it outside, what type of air cleaning device would you recommend and why? 2. Compare and contrast the different types of barriers that might be used to protect openings in a floor at a production facility. What factors should an engineer take into account when designing one of these barriers? In your opinion, which type barrier would be most appropriate for an opening between all four floors of a facility that is designed to move material between floors using a crane located on the top floor? 3. You have a production area where ten welders are producing small parts using MIG welding on mild steel for eight hours each day. There is a general “haze” visibly present, which increases throughout the workday. What type ventilation system would you recommend for the operation? Which factors associated with the contaminant(s) produced by the welding operation would you consider in choosing the ventilation system? How would you evaluate the effectiveness of any ventilation system you installed? 4. Compare and contrast the different types of tribometers. In your opinion which of the tribometers best represents the slip resistance of a surface? 5. Discuss the factors that might contribute to a person tripping on a walking surface. Which of these factors do you believe can best be controlled using engineering controls? Which of the factors is the most difficult to control?
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