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 نية Throughput time (days) Delivery cycle time (days) Manufacturing cycle efficiency (MCE) Percentage of on-time deliveries Total sales (units) 75% 10,410 76% 10,520 81% 10,470 88% 10,450 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) 1 2 3 4 0.8 0.7 0.4 0.6 0.7 0.4 0.4 0.4 Move time per unit Process time per unit Wait time per order before start of production Queue time per unit Inspection time per unit 10.0 3.7 0.4 8.0 3.4 0.3 5.0 2.9 0.4 4.0 1.9 0.6 Required: 1-a. Compute the throughput time for each month. (Round your answers to 1 decimal place.) Month 1 Month 2 Month 3 Month 4 Throughput Time days days days days

Answer 1

Requirement 3(a) calculate new throughput time for month 5th is: New throughput time=process time inspection time+move time 0.4+0.6+0.6=1.6 Requirement-1 (a) calculate throughput time formula: throughput time=process time inspection time+move time+queue time Throughout time month 1 5.6 days 0.7+0.4+0.8+3.7 month 2 4.8 days 0.4+0.3+0.7+3.4 month 3 4.1 days 0.4+0.4+0.4+2.9 month 4 3.5 days 10.4+0.6+0.6+1.9 New MCE for month 5th is: MCE=process time/new throughput time* 100 0.4/1.6*100=25% Requirement 3(b) calculate new throughput time for month 6th is: New throughput time=process time+move time 0.4+0.6=1.0 Requirement-1(b) calculate manufacturing cycle efficiency MCE=process time/throughput time*100 MCE(manufacturing cycle efficiency) month 1 12.5 % 0.7/5.6*100 month 2 8.3 % 0.4/4.8*100 month 3 9.8 % 0.4/4.1*100 month 4 11.4 % 0.4/3.5*100 New MCE for month 6th is: 0.4/1.0*100=40% Requirement-1 (c) calculate delivery cycle time delivery cycle time=wait time-throughput time Delivery cycle time month 1 15.6 days 10.0+5.6 month 2 12.8 days 8.0+4.8 month 3 9.1 days 5.0+4.1 month 4 7.5 days 4.0+3.5