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An average of 30 new batches of parts are produced in a factory each month to meet the monthly demand. On average,

a batch consists of 60 parts to be processed through 10 machines. The operation time per machine per part is 18 min. The non-operation time per batch at each machine averages 8.5 hours, and the required setup time per batch at each machine is 4 hours. Set up is done one machine at a time. During its regular shifts, the plant operates 160 hr/month and there are 20 machines in the factory.


  1. a) Manufacturing Lead Time (MLT) for an average part
  2. b) Average Production Rate (Rp) of a machine
  3. c) Plant Capacity on a monthly basis (PC)
  4. d) Utilization of the plant (U%)
  5. e) Do you think Overtime has been
  6. authorized in order to keep up with the
  7. demand? Explain.
  8. f) Average level of Work-in-Process
  9. (number of parts in process, WIP)
  10. g) Work-in-Process ratio (WIP Ratio)
  11. assuming 20 orders each consisting of 50 parts manufactured in 160 hours per month.
  12. h) Time-in-Process ratio (TIP Ratio)


Top Answer

The answer is... View the full answer


Production permonths = 30 batches
Parts pen batch = 60
Total parts produced per month = 30x60 = 1800
Each batch is processed through to machines.
operation time pen park = 18 min = 0.3 houn.

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