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Scheduling for the Short Term
15 PowerPoint presentation to accompany Heizer and Render Operations Management, 10e, Global Edition Principles of Operations Management, 8e, Global Edition PowerPoint slides by Jeff Heyl © 2011 Pearson Education
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Short-Term Scheduling
Short-term schedules translate capacity decisions, aggregate planning, and master schedules into job sequences and specific assignments of personnel, materials, and machinery © 2011 Pearson Education
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Importance of Short-Term Scheduling
Effective and efficient scheduling can be a competitive advantage Faster movement of goods through a facility means better use of assets and lower costs Additional capacity resulting from faster throughput improves customer service through faster delivery Good schedules result in more dependable deliveries © 2011 Pearson Education
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Scheduling Issues Scheduling deals with the timing of operations
The task is the allocation and prioritization of demand Significant issue is The criteria for priorities © 2011 Pearson Education
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Managers Must Schedule the Following
Scheduling Decisions Organization Managers Must Schedule the Following Arnold Palmer Hospital Operating room use Patient admissions Nursing, security, maintenance staffs Outpatient treatments University of Missouri Classrooms and audiovisual equipment Student and instructor schedules Graduate and undergraduate courses Lockheed Martin factory Production of goods Purchases of materials Workers Hard Rock Cafe Chef, waiters, bartenders Delivery of fresh foods Entertainers Opening of dining areas Delta Air Lines Maintenance of aircraft Departure timetables Flight crews, catering, gate, ticketing personnel Table 15.1 © 2011 Pearson Education
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Optimize the use of resources so that production objectives are met
Scheduling Criteria Minimize completion time Maximize utilization of facilities Minimize work-in-process (WIP) inventory Minimize customer waiting time Optimize the use of resources so that production objectives are met © 2011 Pearson Education
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Gantt Load Chart Example
Day Monday Tuesday Wednesday Thursday Friday Work Center Metalworks Mechanical Electronics Painting Job 349 Job 408 Processing Unscheduled Center not available Job 350 Job 295 Figure 15.3 © 2011 Pearson Education
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Gantt Schedule Chart Example
Start of an activity End of an activity Scheduled activity time allowed Actual work progress Nonproduction time Point in time when chart is reviewed Job Day 1 Day 2 Day 3 Day 4 Day 5 Day 6 Day 7 Day 8 A B C Now Maintenance Figure 15.4 © 2011 Pearson Education
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Tooling and other resources
Capacity Scheduling MRP Data Master schedule BOM Inventory Interactive Finite Capacity Scheduling Routing files Work center information Tooling and other resources Priority rules Expert systems Simulation models Setups and run time Figure 15.5 © 2011 Pearson Education
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