Answers
Ans. | Throughput Time | Delivery Cycle | Manufacturing Cycle | |||
Months | Time | Efficiency | ||||
1 | 8 days | 17 days | 35.0% | |||
2 | 9.4 days | 20 days | 27.7% | |||
3 | 11 days | 23 days | 21.8% | |||
4 | 12 days | 26 days | 15.0% | |||
*Calculations for 1 a, b, c are shown below: | ||||||
Ans. 1 a | Throughput time = Move time + Process time + Queue time + Inspection time | |||||
Months | ||||||
Particulars | 1 | 2 | 3 | 4 | ||
Move time per unit | 0.4 | 0.6 | 0.6 | 0.8 | ||
Process time per unit | 2.8 | 2.6 | 2.4 | 1.8 | ||
Inspection time per unit | 0.9 | 0.8 | 0.8 | 0.8 | ||
Queue time | 3.9 | 5.4 | 7.2 | 8.6 | ||
Total (Throughput Time) | 8 days | 9.4 days | 11 days | 12 days | ||
Ans. 1 b | Manufacturing cycle efficiency = Process time or value added time / Throughput time * 100 | |||||
Months | ||||||
1 | 2.8 / 8 * 100 | 35.0% | ||||
2 | 2.6 / 9.4 * 100 | 27.7% | ||||
3 | 2.4 / 11 * 100 | 21.8% | ||||
4 | 1.8 / 12 * 100 | 15.0% | ||||
Ans. 1 c | Delivery cycle time = Throughput time + Wait time per order before start of production | |||||
Months | ||||||
1 | 8 + 9 | 17 | days | |||
2 | 9.4 + 10.6 | 20 | days | |||
3 | 11 + 12 | 23 | days | |||
4 | 12 + 14 | 26 | days | |||
Ans. 3 | Month 5 | Month 6 | ||||
Throughput time | 3.4 days | 2.6 days | ||||
Manufacturing cycle efficiency (MCE) | 52.9% | 69.2% | ||||
*Calculations: | ||||||
Ans. 3 a | Month 5 : | |||||
Throughput time: | ||||||
Move time per unit | 0.8 | |||||
Process time per unit | 1.8 | |||||
Inspection time per unit | 0.8 | |||||
Total | 3.4 | days | ||||
MCE (manufacturing cycle efficiency) = Process time / Throughput time * 100 | ||||||
1.8 / 3.4 * 100 | ||||||
52.9% | ||||||
Ans. 3 b | Month 6 : | |||||
Throughput time: | ||||||
Move time per unit | 0.8 | |||||
Process time per unit | 1.8 | |||||
Total | 2.6 | days | ||||
MCE (manufacturing cycle efficiency) = Process time / Throughput time * 100 | ||||||
1.8 / 2.6 * 100 | ||||||
69.2% | ||||||