DataSpan, Inc., automated its plant at the start of the current year and install
ID: 2588156 • Letter: D
Question
DataSpan, Inc., automated its plant at the start of the current year and installed a flexible manufacturing system. The company is also evaluating its suppliers and moving toward Lean Production. Many adjustment problems have been encountered, including problems relating to performance measurement. After much study, the company has decided to use the performance measures below, and it has gathered data relating to these measures for the first four months of operations.
Month
Management has asked for your help in computing throughput time, delivery cycle time, and MCE. The following average times have been logged over the last four months:
Average per Month (in days)
Required:
1-a. Compute the throughput time for each month. (Round your answers to 1 decimal place.)
1-b. Compute the manufacturing cycle efficiency (MCE) for each month. (Round your answers to 1 decimal place.)
1-c. Compute the delivery cycle time for each month. (Round your answers to 1 decimal place.)
3-a. Refer to the move time, process time, and so forth, given for month 4. Assume that in month 5 the move time, process time, and so forth, are the same as in month 4, except that through the use of Lean Production the company is able to completely eliminate the queue time during production. Compute the new throughput time and MCE. (Round your answers to 1 decimal place.)
3-b. Refer to the move time, process time, and so forth, given for month 4. Assume in month 6 that the move time, process time, and so forth, are again the same as in month 4, except that the company is able to completely eliminate both the queue time during production and the inspection time. Compute the new throughput time and MCE. (Round your answers to 1 decimal place.)
Month
1 2 3 4 Throughput time (days) ? ? ? ? Delivery cycle time (days) ? ? ? ? Manufacturing cycle efficiency (MCE) ? ? ? ? Percentage of on-time deliveries 73% 74% 79% 86% Total sales (units) 10,550 10,530 10,410 10,420Explanation / Answer
1-a. Throughput time=Process time+inspection time+move time+queue time Month 1 2 3 4 Process time 0.4 0.8 0.4 0.7 Inspection time 0.8 0.3 0.3 0.5 Move time 0.6 0.8 0.8 0.5 Queue time 3.5 3.5 3 1.5 Throughput time 5.3 5.4 4.5 3.2 days days days days 1-b. Manufacturing cycle efficiency=Process time/Throughput time Month 1 2 3 4 Process time 0.4 0.8 0.4 0.7 Throughput time 5.3 5.4 4.5 3.2 Manufacturing cycle efficiency 7.55% 14.81% 8.89% 21.88% 1-c. Delivery cycle time=Wait time+Throughput time Month 1 2 3 4 Wait time 9.6 8 5 4 Throughput time 5.3 5.4 4.5 3.2 Delivery cycle time 14.9 13.4 9.5 7.2 days days days days 3-a. Throughput time=Process time+inspection time+move time+queue time Month 5 Process time 0.7 Inspection time 0.5 Move time 0.5 Queue time 0 Throughput time 1.7 days Manufacturing cycle efficiency=Process time/Throughput time Month 5 Process time 0.7 Throughput time 1.7 Manufacturing cycle efficiency 41.18% 3-b. Throughput time=Process time+inspection time+move time+queue time Month 6 Process time 0.7 Inspection time 0 Move time 0.5 Queue time 0 Throughput time 1.2 days Manufacturing cycle efficiency=Process time/Throughput time Month 6 Process time 0.7 Throughput time 1.2 Manufacturing cycle efficiency 58.33%
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