15 Scheduling for the Short Term Power Point

15 Scheduling for the Short Term Power. Point presentation to accompany Heizer and Render Operations Management, 10 e, Global Edition Principles of Operations Management, 8 e, Global Edition Power. Point slides by Jeff Heyl © 2011 Pearson Education 15 - 1

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 15 - 2

Importance of Short-Term Scheduling u Effective and efficient scheduling can be a competitive advantage u Faster movement of goods through a facility means better use of assets and lower costs u Additional capacity resulting from faster throughput improves customer service through faster delivery u Good schedules result in more dependable deliveries © 2011 Pearson Education 15 - 3

Scheduling Issues u Scheduling deals with the timing of operations u The task is the allocation and prioritization of demand u Significant issue is u The criteria for priorities © 2011 Pearson Education 15 - 4

Scheduling Decisions Organization Arnold Palmer Hospital University of Missouri Lockheed Martin factory Hard Rock Cafe Delta Air Lines Table 15. 1 © 2011 Pearson Education Managers Must Schedule the Following Operating room use Patient admissions Nursing, security, maintenance staffs Outpatient treatments Classrooms and audiovisual equipment Student and instructor schedules Graduate and undergraduate courses Production of goods Purchases of materials Workers Chef, waiters, bartenders Delivery of fresh foods Entertainers Opening of dining areas Maintenance of aircraft Departure timetables Flight crews, catering, gate, ticketing personnel 15 - 5

Scheduling Criteria 1. Minimize completion time 2. Maximize utilization of facilities 3. Minimize work-in-process (WIP) inventory 4. Minimize customer waiting time Optimize the use of resources so that production objectives are met © 2011 Pearson Education 15 - 6

Gantt Load Chart Example Day Work Center Metalworks Monday Tuesday Job 349 Job 408 Painting Processing Friday Job 350 Mechanical Electronics Wednesday Thursday Job 408 Job 349 Job 295 Job 408 Unscheduled Job 349 Center not available Figure 15. 3 © 2011 Pearson Education 15 - 7

Gantt Schedule Chart Example Job Day Day 1 2 3 4 5 6 7 8 A B Start of an activity End of an activity Scheduled activity time allowed Actual work progress Maintenance Nonproduction time C Figure 15. 4 © 2011 Pearson Education Point in time when chart is reviewed Now 15 - 8

Capacity Scheduling MRP Data • Master schedule • BOM • Inventory Priority rules • Expert systems • Simulation models Interactive Finite Capacity Scheduling • Routing files • Work center information Tooling and other resources Setups and run time Figure 15. 5 © 2011 Pearson Education 15 - 9