5.16: Complete the following table to determine the run sequence for each of the sequencing rules: Job Process Arrival Due Operation Sequencing Rule Date Date Due Date A B с D Time (days) 5 2 3 6 123 124 131 132 142 144 140 146 132 131 129 135 FCFS EDD ODD SPT
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- In the winter, Scott works four 10-hour days instead of five 8-hour days, so he has a long weekend every week. In this way, Scott takes advantage of a ________. Question 38 options: A) shared work week B) flextime work week C) new-age work week D) compressed work week E) enriched work week1. A production department of a textile firm received six different orders this week. They have calculated the processing time presented as a table (below). They have also put the due dates for each job. Job A с E B D F Process. Time 2 4 5 8 10 12 Due Date 7 4 15 16 17 18 Based on the table please provide four sequences to complete the jobs: a) Using first come first served (FCFS) assuming the letters represent the order they arrive (A first, B next, then C, etc..) b) Using shortest processing time c) Using longest processing time d) Using due dates Calculate "average completion time", "average number of jobs in the system" and "average job lateness" for all the sequences you have generated above.17-13. Jobs processed through Percy's machine shop pass through three operations: milling, grinding, and turning. The hours required for each of these operations is as follows: Job Milling Grinding Turning A 5 1 4 B 2 2 5 C 3 2 1 D 1 3 E 1 2 Sequence the job by (a) FCFS and (b) shortest processing time (SPT). Make a Gantt chart for each machine and each rule. Which sequencing rule would you recommend?
- Weighted-Average Method Arsenio Company manufactures a single product that goes throughtwo processes, mixing and cooking. The following data pertain to the mixing department for August:[LO 6-2, 6-5][LO 6-2, 6-3, 6-4]Work-in-Process Inventory, August 1Conversion: 80% complete 34,000 unitsWork-in-Process Inventory, August 31Conversion: 50% complete 30,000 unitsUnits started 66,000Units completed and transferred out ?CostsWork-in-Process Inventory, August 1Material X $ 64,800Material Y 88,100Conversion 119,880Costs added during AugustMaterial X 152,700Material Y 135,900Conversion 305,120Material X is added at the beginning of work in the mixing department. Material Y is also added in themixing department, but not until units are 60% complete with regard to conversion. Conversion costs areincurred uniformly during the process. The company uses the weighted-average cost method.Required1. Calculate the equivalent units of material X, material Y, and conversion for the mixing department.2.…Drew Rosen Automation Company estimates the data entry and verifying times for four jobs as follows: In what order should the jobs be done if the company has one operator for each job? The order is Choose the correct graph of the time-phased flow of this job sequence. O A. O C. Job Entry Time A 2.0 Job Verify Time S 2.0 - Idle B Job Entry Time A 3.4 3.4 5.4 - Idle A Job Verify Time A B 5.6 5.4 C B B 199 5.8 7.2 8.2 D 11 7.9 9.5 D 194 8.0 9.4 10.5 C D 111 9.4 11.7 13.3 Q ✔ Q JOB ABCD DATA ENTRY (HOURS) 2.0 3.6 2.3 1.6 B. O D. VERIFY (HOURS) 3.4 2.4 1.4 1.0 Job Entry Time A H 2.0 Job Verify Time A ㅏ Job Entry Time A H 2.0 Job Verify Time D, C H 3.4 1.0 2.4 B - Idle B B 5.6 C 5.6 4 C, D 5.8 7.2 8.2 C 7.9 B 7.9 8.0 D D 9.5 9.5 A 11.4 Q G QA foreman has determined the expected processing times at a machine for a set of jobs and now wants to sequence them. Given the following information, do the following: Job Time Due Date Job (days) (days) a 4.5 10 6.0 17 5.2 12 d. 1.6 27 e 2.8 18 f 3.3 19 a-1. Determine the processing sequence using (1) MST, (2) SPT, (3) EDD, and (4) CR. Rule Sequence a-с-b-е-f-d MST d-e-f-a-c-b SPT a-c-b-e-f-d EDD a-c-b-f-e-d O CR a-2. For each sequence, calculate the average days late, the average flow time, and the average WIP. (Do not round intermediate calculations. Round the final answers to 2 decimal places.) Rule Average lateness Average flow time Average WIP day (s) day (5) MST & EDD day(s) jobs day (s) jobs SPT day (s) day (s) jobs CR b. Which rule is best? SPT O has the lowest average flow time & average WIP, but EDD & MST have the lowest average days late.
- Enter data only in Number of Jobs 5 Job 1 2 3 yellow-shaded cells. Up to 10 jobs may be sequenced Average Average Average Number o Maximum Flowtime Lateness Tardines: Tardy Job: Tardiness 14.40 4.20 5.00 3 12.00 4 5 6 7 8 9 10 'rocessing Tim 7 3 5 2 6 Due Dat 11 10 8 5 17 iequence Processing Time Due Date Flowtime Lateness Tardiness 1 11 7 -4 0 2 10 10 0 0 3 8 15 7 7 4 5 17 12 12 5 17 23 6 6 7 3 5 2 6Understand the design choices and the pros andcons of an appointment system for scheduling3:34 Done Chapter 16 Assessment i 25 eBook References Mc Graw Hill P
- The following table contains information concerning four jobs that are awaiting processing at awork center.JobJob Time(days)Due Date(days)A 14 20B 10 16C 7 15D 6 17a. Sequence the jobs using (1) FCFS, (2) SPT, (3) EDD, and (4) CR. Assume the list is by orderof arrival.b. For each of the methods in part a, determine (1) the average job flow time, (2) the average tardiness, and (3) the average number of jobs at the work center.c. Is one method superior to the others? Explain.12 eBook References The owner/operator of the local franchise of Handyman, Inc., has four jobs to do today, shown in the order they were received: Job W X Y Z Processing Time (hrs) 4 3 2 1 Multiple Choice O If he uses the shortest processing time first priority rule to schedule these jobs, what will be the average completion time? 7.5 hours 5 hours 3 hours 2.5 hours Due (hrs from now) 2 hours 4 5 2 1Practice Problem #1 A process consists of 30 activities E task time = 42 min/unit Longest activity = 2.4 min Shortest activity = 0.3 min Available Time, A = 480 min/day (A) Max cycle time = Min cycle time = YC) If cycle time = 42 min, R = (D) If cycle time = 2.4 min, R = (E) If number of workstations, N = 10, and cycle time is 4.2 min/unit %3D Output Rate, R = (F) Assembly-line Efficiency =