The trim line at PW is a small subassembly line that, along with other such lines, feeds into the final chassis line. The entire assembly line, which consists of more than 900 workstations, is to make PW’s new E cars. The trim line itself involves only 13 work elements and must handle 20 cars per hour. Work-element data are as follows: Work Element Time (Sec) Immediate Predecessor(s) A B C DE F G H I J K L M 1.8 0.4 1.6 1.5 0.7 0.5 0.8 1.4 1.4 1.4 0.5 1.0 0.8 None None None A A E B C D F,G H J I,K,L a. Draw a precedence diagram.b. What cycle time (in minutes) results in the desired output rate?c. What is the theoretical minimum number of stations?d. Use the longest work element decision rule to balance the line and calculate the efficiency of your solution.e. Use the most followers work element decision rule to balance the line and calculate the efficiency of your solution.

What components are required to assemble a control unit with vertical coding, and how is it constructed?

A manufacturing plant has the process displayed below. The drilling operation occurs separately from and simultaneously with the sawing and sanding operations. The product only needs to go through one of the three one of the three assembly operations (the assembly operations are ‘parallel’). a) What is the bottleneck operation? b) What is the throughput time for the overall system? c) If the firm operates 10 hours a day, 21 days a month, what is the monthly and yearly capacity of the manufacturing process? d) Supposed that a second drilling machine is added, and it takes the same time as the original drilling machine. What is the new bottleneck time of the system? e) What is the new throughput time if the second drilling machine is added?

Explain the differences between one-worker, multiplemachine (OWMM) and group technology (GT) approaches to lean system layouts.