Tutorial 7 Suggested Solutions.pdf

The estimated waiting time and processing time for

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The estimated waiting time and processing time for each activity in the process are shown in table below. All times are given in minutes.
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FIT2090 Business Information Systems and Processes Page 2 of 4 a) Calculate the average cycle time for this process. b) Calculate the cycle time efficiency. Suggestion: Assuming a job is never reworked more than once in the same rework loop. a. Calculate the average cycle time for this process. CT = T A +(1+0.2)(T B +T C )+T D +max{T E , T F , T G }+0.9(T H )+T I The activity time = Processing time + Waiting time CT = 10+1.2(13+6)+15+max{9, 3, 7}+0.9(17)+10 = 82.1 minutes b. Calculate the cycle time efficiency. Cycle time efficiency = CT CT Time Cycle Actual Time Cycle ocess l Theoretica * Pr The theoretical cycle time (CT * ) is obtained by using the processing times instead of the activity times (i.e., by disregarding the waiting time). CT * = 3+1.2(8+2)+5+ max{2, 3, 5}+0.9(9)+8 = 41.1 minutes The Cycle Time Efficiency = % 1 . 50 1 . 82 1 . 41 3. 3 teams T1, T2 and T3 work in the process depicted in the figure below, where the numbers in each activity indicate processing times in minutes. Calculate the capacity utilization of the process
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