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CHAPTER 16.docx

6 Pages

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BUSI 2301
Inder S Mann

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CHAPTER 16: Scheduling and Control A. Intro - Scheduling o Establishing the timing of the use of eqpt, facilities, and human activities in an organization - Dynamic scheduling o Location of scheduling in the production planning system - Shop floor control o Execution of the schedule - Objective of scheduling o To achieve trade-offs among conflicting goals, which include efficient utilization of staff, eqpt, and facilities, and minimization of customer waiting time, inventories, and production times B. Scheduling in Manufacturing 1) Scheduling in high vol systems (continuous and assembly line) a. Goal is to obtain a smooth rt of flow of goods thru system in order to get hi utilization of labour and equipment b. Flow system: hi vol system with one main flow of material movement, using std’ized eqpt and activities c. Flow shop scheduling: scheduling of flow systems 2) High Process Volume Factors a. Process and product design b. Preventive maintainence c. Rapid repair when breakdown occurs d. Optimal product mixes e. Minimization of quality problems f. Reliability and timing of supplies 3) Scheduling in intermediate vol sys’s (batch) a. Items are processed intermittently b. Three issues i. Run size ii. Sequence iii.Timing of batches C. Scheduling Low-Volume Systems (Job Shops) - Job Shop scheduling o Scheduling for low vol systems w many variations in reqms - Loading o The assignment of jobs to processing centres o Infinite loading  Jobs are assigned to work centres without regard to the cap of the work centre o Finite loading  Jobs are assigned to work centres taking into account the work centre cap and job processing times o Vertical loading  Loading jobs at work centres independently o Horizontal loading  Loading each job on all work centres it will require, on job at a time, according to some priority o Forward scheduling  Scheduling ahead, starting from the start date of a job o Backward scheduling  Scheduling by working backwards from the due date o Schedule char  A Gantt chart that shows the jobs in progress and whether they are on schedule o Input/output control  Managing work flow and queues at each work centre Gantt Chart - Used as a visual aid for loading, sched
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