Finished Goods Raw mater Bread making Cycle tin e Pack Cycle time: ¼ hour, 100 l
ID: 386528 • Letter: F
Question
Finished Goods Raw mater Bread making Cycle tin e Pack Cycle time: ¼ hour, 100 loaves WIP Bottleneck: Max throughput rate Max capacity in an 8-hour shift: Average WIP: Utilization of packing Bread making Cycle time I hour/100 loaves Raw material Pack Finished WIP Cycle time:Goods hour/100 loaves Bread making Cycle time: I hour 100 loaves Bottleneck: Max throughput rate Max capacity in an 8-hour shift: Average WIP If Bread Making runs two shifts and Packaging runs three shifts: Bottleneck: Max throughput rate: Average WIP (in 100 loaves of bread): Average waiting in inventory (in hours): Total flow time: baking+ average waiting+ packaging-Explanation / Answer
Bread making Cycle time = one hour per 100 loaves = 60/100 min per loaves = 0.6 min per loaf
Packing Cycle time = 3/4 hour per 100 loaves = 45/100 min per loaves = 0.45 min per loaf
Bottleneck process is one with higher cycle time = Bread making
Max throughput rate = 1/Cycle time
Bread making = 1/0.6 = 1.67 loaves per min
Packing = 1/0.45 = 2.22 loaves per min
So, maximum throughput will be minimum of the two = 1.67 loaves per min
Maximum capacity in an 8 hour shift = Total minutes*Maximum throughput rate = 8*60*1.67 = 800 loaves
Average WIP = 0 as the cycle time of Bread making is higher than that of Packing
Utilization of Packing = Cycle time of Packing/Cycle time of bread making*100 = 0.45/0.6*100 = 75%
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