Thus far at Acme Automotive Parts $($AAP$),$ you have determined that controls are required in the paint booths, at the hand$-$welding stations, and on the machining lines. You have also determined that you cannot substitute any alternate chemicals in these areas because of requirements from your clients. You decide to use general dilution ventilation for the machining lines and local exhaust ventilation systems for the paint booths and the hand$-$welding stations. Complete the following tasks.

For the general dilution ventilation used in the machining lines:

Discuss why you believe a general ventilation system is appropriate for this operation.

State where you would place the fans associated with the ventilation system.

Explain how you would test the effectiveness of the ventilation system.

For the local exhaust ventilation systems:

Describe the local exhaust ventilations $($LEVs$)$ you would use for each area $($paint booths and hand$-$welding stations$).$

Choose a hood type for each of the two LEVs.

Calculate the flow rate that would be required if you placed the LEV for the welding operation $24$ in$.$ from the weld and desired a capture velocity of $100$ ft per minute $($ft$/$min$)$ given W$=12$ in$.$ and L$=24$ in$.$ for any of the three hood types.

Discuss any barriers you might face in implementing the use of the LEVs for these two operations.