Lean Systems Value Stream Mapping

13. Anguilla Manufacturing is interested in using the data collected during value stream mapping to evalu- ate the current state performance of the capacity of its manual assembly line process under different batch size assumptions. The availability of processing per shift, after accounting for breaks and a midshift employee meeting, is 436 minutes. The current operating charac- teristics of each processing step are found in the accom- panying table. Note that each step can only process one part at a time and all steps must process the same sized batches. Saw Sand Drill Assemble Mark Cycle time 20 seconds 15 seconds 30 seconds 25 seconds 10 seconds per part Setup time 3 minutes 4 minutes O minutes 3 minutes 8 minutes per batch a. Calculate the average processing time per unit and the capacity at each step assuming batch sizes of: i. 10 units ii. 20 units