Scheduling Manufacturing Process Shipping Department Raw Materials Legend: Batch of parts Workstation.

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Presentation transcript:

Scheduling

Manufacturing Process

Shipping Department Raw Materials Legend: Batch of parts Workstation

Manufacturing Process Shipping Department Raw Materials Legend: Batch of parts Workstation

Manufacturing Process Shipping Department Raw Materials Legend: Batch of parts Workstation

Manufacturing Process Shipping Department Raw Materials Legend: Batch of parts Workstation

Manufacturing Process Shipping Department Raw Materials Legend: Batch of parts Workstation

Manufacturing Process Shipping Department Raw Materials Legend: Batch of parts Workstation

Manufacturing Process Shipping Department Raw Materials Legend: Batch of parts Workstation

Gantt Charts

Progress Chart Plymouth Ford Pontiac Job4/204/224/234/244/254/264/214/174/184/19 Figure 17.2

Gantt Charts Progress Chart Plymouth Ford Pontiac Job4/204/224/234/244/254/264/214/174/184/19 Figure 17.2

Gantt Charts Progress Chart Plymouth Ford Pontiac Job4/204/224/234/244/254/264/214/174/184/19 Figure 17.2

Gantt Charts Progress Chart Plymouth Ford Pontiac Job4/204/224/234/244/254/264/214/174/184/19 Current date Figure 17.2

Gantt Charts Machine Chart Machine4/204/224/234/244/254/264/21 Grinder Lathe Figure 17.3

Gantt Charts Machine Chart Machine4/204/224/234/244/254/26 PlymouthPontiacFord PlymouthPontiacFord 4/21 Grinder Lathe Figure 17.3

Gantt Charts Machine Chart Machine4/204/224/234/244/254/26 PlymouthPontiacFord PlymouthPontiacFord 4/21 Grinder Lathe Figure 17.3

Current date Machine4/204/224/234/244/254/26 Grinder Lathe PlymouthPontiacFord PlymouthPontiacFord 4/21 Gantt Charts Machine Chart Figure 17.3

Performance Measures  Job flow time = Time of completion - Time job was available for first processing  Makespan = Time of completion of last job - Starting time of first job  Past due  Work-in-process inventory  Total inventory = Scheduled receipts for all items + On-hand inventories of all items  Utilization = Productive work time/Total work time available

Dispatching Procedures - Static  Earliest due date (EDD)  First come, first served (FCFS)  Last come, first served (LCFS)  Shortest processing time (SPT)

 Critical ratio ( CR ) (Due date - Today’s date) / Total shop time remaining Slack time remaining (STR) Time to due date - Total shop time remaining Slack per remaining operations (STR/OP) STR / Number of operations remaining Dispatching Procedures - Dynamic

Sequencing Single-Dimension Rules

Sequencing Single-Dimension Rules - EDD JobScheduledActual EngineProcessingFlowCustomerCustomerHours BlockBeginTimeTimePickupPickupHoursPast SequenceWork(hr)(hr)TimeTimeEarlyDue Ranger 810 Explorer 612 Econoline Bronco 1520 Thunderbird 1222 Example 17.1

Sequencing Single-Dimension Rules - EDD JobScheduledActual EngineProcessingFlowCustomerCustomerHours BlockBeginTimeTimePickupPickupHoursPast SequenceWork(hr)(hr)TimeTimeEarlyDue Ranger 0+8=810 Explorer 612 Econoline Bronco 1520 Thunderbird 1222 Example 17.1

Sequencing Single-Dimension Rules - EDD JobScheduledActual EngineProcessingFlowCustomerCustomerHours BlockBeginTimeTimePickupPickupHoursPast SequenceWork(hr)(hr)TimeTimeEarlyDue Ranger 0+8= Explorer 612 Econoline Bronco 1520 Thunderbird 1222 Example 17.1

Sequencing Single-Dimension Rules - EDD JobScheduledActual EngineProcessingFlowCustomerCustomerHours BlockBeginTimeTimePickupPickupHoursPast SequenceWork(hr)(hr)TimeTimeEarlyDue Ranger 0+8= Explorer 8+6= Econoline Bronco 1520 Thunderbird 1222 Example 17.1

Sequencing Single-Dimension Rules - EDD JobScheduledActual EngineProcessingFlowCustomerCustomerHours BlockBeginTimeTimePickupPickupHoursPast SequenceWork(hr)(hr)TimeTimeEarlyDue Ranger 0+8= Explorer 8+6= Econoline = Bronco 1520 Thunderbird 1222 Example 17.1

Sequencing Single-Dimension Rules - EDD JobScheduledActual EngineProcessingFlowCustomerCustomerHours BlockBeginTimeTimePickupPickupHoursPast SequenceWork(hr)(hr)TimeTimeEarlyDue Ranger 0+8= Explorer 8+6= Econoline = Bronco 17+15= Thunderbird 1222 Example 17.1

Sequencing Single-Dimension Rules - EDD JobScheduledActual EngineProcessingFlowCustomerCustomerHours BlockBeginTimeTimePickupPickupHoursPast SequenceWork(hr)(hr)TimeTimeEarlyDue Ranger 0+8= Explorer 8+6= Econoline = Bronco 17+15= Thunderbird 32+12= Example 17.1

Sequencing Single-Dimension Rules - EDD JobScheduledActual EngineProcessingFlowCustomerCustomerHours BlockBeginTimeTimePickupPickupHoursPast SequenceWork(hr)(hr)TimeTimeEarlyDue Ranger 0+8= Explorer 8+6= Econoline = Bronco 17+15= Thunderbird 32+12= Average job flow time = Example 17.1

Sequencing Single-Dimension Rules - EDD JobScheduledActual EngineProcessingFlowCustomerCustomerHours BlockBeginTimeTimePickupPickupHoursPast SequenceWork(hr)(hr)TimeTimeEarlyDue Ranger 0+8= Explorer 8+6= Econoline = Bronco 17+15= Thunderbird 32+12= Average job flow time = 23 hours Example 17.1

Sequencing Single-Dimension Rules - EDD JobScheduledActual EngineProcessingFlowCustomerCustomerHours BlockBeginTimeTimePickupPickupHoursPast SequenceWork(hr)(hr)TimeTimeEarlyDue Ranger 0+8= Explorer 8+6= Econoline = Bronco 17+15= Thunderbird 32+12= Average job flow time = 23 hoursAverage hours early = Example 17.1

Sequencing Single-Dimension Rules - EDD JobScheduledActual EngineProcessingFlowCustomerCustomerHours BlockBeginTimeTimePickupPickupHoursPast SequenceWork(hr)(hr)TimeTimeEarlyDue Ranger 0+8= Explorer 8+6= Econoline = Bronco 17+15= Thunderbird 32+12= Average job flow time = 23 hoursAverage hours early = 0.6 hour Example 17.1

Sequencing Single-Dimension Rules - EDD JobScheduledActual EngineProcessingFlowCustomerCustomerHours BlockBeginTimeTimePickupPickupHoursPast SequenceWork(hr)(hr)TimeTimeEarlyDue Ranger 0+8= Explorer 8+6= Econoline = Bronco 17+15= Thunderbird 32+12= Average job flow time = 23 hoursAverage hours early = 0.6 hour Average hours past due = Example 17.1

Sequencing Single-Dimension Rules - EDD JobScheduledActual EngineProcessingFlowCustomerCustomerHours BlockBeginTimeTimePickupPickupHoursPast SequenceWork(hr)(hr)TimeTimeEarlyDue Ranger 0+8= Explorer 8+6= Econoline = Bronco 17+15= Thunderbird 32+12= Average job flow time = 23 hoursAverage hours early = 0.6 hour Average hours past due = 7.2 hours Example 17.1

Sequencing Single-Dimension Rules - EDD JobScheduledActual EngineProcessingFlowCustomerCustomerHours BlockBeginTimeTimePickupPickupHoursPast SequenceWork(hr)(hr)TimeTimeEarlyDue Ranger 0+8= Explorer 8+6= Econoline = Bronco 17+15= Thunderbird 32+12= Average job flow time = 23 hoursAverage hours early = 0.6 hour Average hours past due = 7.2 hoursAverage WIP = Sum of flow times Makespan Example 17.1

Sequencing Single-Dimension Rules - EDD JobScheduledActual EngineProcessingFlowCustomerCustomerHours BlockBeginTimeTimePickupPickupHoursPast SequenceWork(hr)(hr)TimeTimeEarlyDue Ranger 0+8= Explorer 8+6= Econoline = Bronco 17+15= Thunderbird 32+12= Average job flow time = 23 hoursAverage hours early = 0.6 hour Average hours past due = 7.2 hoursAverage WIP = Example 17.1

Sequencing Single-Dimension Rules - EDD JobScheduledActual EngineProcessingFlowCustomerCustomerHours BlockBeginTimeTimePickupPickupHoursPast SequenceWork(hr)(hr)TimeTimeEarlyDue Ranger 0+8= Explorer 8+6= Econoline = Bronco 17+15= Thunderbird 32+12= Average job flow time = 23 hoursAverage hours early = 0.6 hour Average hours past due = 7.2 hoursAverage WIP = 2.61 blocks Example 17.1

Sequencing Single-Dimension Rules - EDD JobScheduledActual EngineProcessingFlowCustomerCustomerHours BlockBeginTimeTimePickupPickupHoursPast SequenceWork(hr)(hr)TimeTimeEarlyDue Ranger 0+8= Explorer 8+6= Econoline = Bronco 17+15= Thunderbird 32+12= Average job flow time = 23 hoursAverage hours early = 0.6 hour Average hours past due = 7.2 hoursAverage WIP = 2.61 blocks Average total inventory = Sum of time in system Makespan Example 17.1

Sequencing Single-Dimension Rules - EDD JobScheduledActual EngineProcessingFlowCustomerCustomerHours BlockBeginTimeTimePickupPickupHoursPast SequenceWork(hr)(hr)TimeTimeEarlyDue Ranger 0+8= Explorer 8+6= Econoline = Bronco 17+15= Thunderbird 32+12= Average job flow time = 23 hoursAverage hours early = 0.6 hour Average hours past due = 7.2 hoursAverage WIP = 2.61 blocks Average total inventory = Example 17.1

Sequencing Single-Dimension Rules - EDD JobScheduledActual EngineProcessingFlowCustomerCustomerHours BlockBeginTimeTimePickupPickupHoursPast SequenceWork(hr)(hr)TimeTimeEarlyDue Ranger 0+8= Explorer 8+6= Econoline = Bronco 17+15= Thunderbird 32+12= Average job flow time = 23 hoursAverage hours early = 0.6 hour Average hours past due = 7.2 hoursAverage WIP = 2.61 blocks Average total inventory = 2.68 engine blocks Example 17.1

Sequencing Single-Dimension Rules - SPT Example 17.1

Sequencing Single-Dimension Rules - SPT JobScheduledActual EngineProcessingFlowCustomerCustomerHours BlockBeginTimeTimePickupPickupHoursPast SequenceWork(hr)(hr)TimeTimeEarlyDue Econoline = Explorer 3+6= Ranger 6+8= Thunderbird 17+12= Bronco 29+15= Average job flow time = 20.4 hoursAverage hours early = 3.6 hour Average hours past due = 7.6 hoursAverage WIP = 2.32 blocks Average total inventory = 2.73 engine blocks Example 17.1

Sequencing Single-Dimension Rules - SPT JobScheduledActual EngineProcessingFlowCustomerCustomerHours BlockBeginTimeTimePickupPickupHoursPast SequenceWork(hr)(hr)TimeTimeEarlyDue Econoline = Explorer 3+6= Ranger 6+8= Thunderbird 17+12= Bronco 29+15= Average job flow time = 20.4 hoursAverage hours early = 3.6 hour Average hours past due = 7.6 hoursAverage WIP = 2.32 blocks Average total inventory = 2.73 engine blocks Rule Comparison EDDSPT Average job flow time Average hours early Average hours past due Average WIP Average total inventory Example 17.1

Sequencing Multiple-Dimension Rules

Sequencing OperationTime Time atRemainingNumber of Engineto Due DateOperationsShop Time JobLathe (hr)(Days)RemainingRemainingCRS/RO Example 17.2

Sequencing Multiple-Dimension Rules OperationTime Time atRemainingNumber of Engineto Due DateOperationsShop Time JobLathe (hr)(Days)RemainingRemainingCRS/RO CR = Time remaining to due date Shop time remaining Example 17.2

Sequencing Multiple-Dimension Rules OperationTime Time atRemainingNumber of Engineto Due DateOperationsShop Time JobLathe (hr)(Days)RemainingRemainingCRS/RO CR = Example 17.2

Sequencing Multiple-Dimension Rules OperationTime Time atRemainingNumber of Engineto Due DateOperationsShop Time JobLathe (hr)(Days)RemainingRemainingCRS/RO CR = = Example 17.2

Sequencing Multiple-Dimension Rules OperationTime Time atRemainingNumber of Engineto Due DateOperationsShop Time JobLathe (hr)(Days)RemainingRemainingCRS/RO CR = = Example 17.2

Sequencing Multiple-Dimension Rules OperationTime Time atRemainingNumber of Engineto Due DateOperationsShop Time JobLathe (hr)(Days)RemainingRemainingCRS/RO Example 17.2

Sequencing Multiple-Dimension Rules OperationTime Time atRemainingNumber of Engineto Due DateOperationsShop Time JobLathe (hr)(Days)RemainingRemainingCRS/RO S/RO = Time remaining to due date - Shop time remaining Number of operations remaining Example 17.2

Sequencing Multiple-Dimension Rules OperationTime Time atRemainingNumber of Engineto Due DateOperationsShop Time JobLathe (hr)(Days)RemainingRemainingCRS/RO S/RO = Example 17.2

Sequencing Multiple-Dimension Rules OperationTime Time atRemainingNumber of Engineto Due DateOperationsShop Time JobLathe (hr)(Days)RemainingRemainingCRS/RO S/RO = = Example 17.2

Sequencing Multiple-Dimension Rules OperationTime Time atRemainingNumber of Engineto Due DateOperationsShop Time JobLathe (hr)(Days)RemainingRemainingCRS/RO S/RO = = Example 17.2

Sequencing Multiple-Dimension Rules OperationTime Time atRemainingNumber of Engineto Due DateOperationsShop Time JobLathe (hr)(Days)RemainingRemainingCRS/RO Example 17.2

Sequencing Multiple-Dimension Rules OperationTime Time atRemainingNumber of Engineto Due DateOperationsShop Time JobLathe (hr)(Days)RemainingRemainingCRS/RO CR Sequence= Example 17.2

Sequencing Multiple-Dimension Rules OperationTime Time atRemainingNumber of Engineto Due DateOperationsShop Time JobLathe (hr)(Days)RemainingRemainingCRS/RO CR Sequence= 4 Example 17.2

Sequencing Multiple-Dimension Rules OperationTime Time atRemainingNumber of Engineto Due DateOperationsShop Time JobLathe (hr)(Days)RemainingRemainingCRS/RO CR Sequence= Example 17.2

Sequencing Multiple-Dimension Rules OperationTime Time atRemainingNumber of Engineto Due DateOperationsShop Time JobLathe (hr)(Days)RemainingRemainingCRS/RO CR Sequence= Example 17.2

Sequencing Multiple-Dimension Rules OperationTime Time atRemainingNumber of Engineto Due DateOperationsShop Time JobLathe (hr)(Days)RemainingRemainingCRS/RO CR Sequence= Example 17.2

Sequencing Multiple-Dimension Rules OperationTime Time atRemainingNumber of Engineto Due DateOperationsShop Time JobLathe (hr)(Days)RemainingRemainingCRS/RO CR Sequence= S/RO Sequence= Example 17.2

Sequencing Multiple-Dimension Rules OperationTime Time atRemainingNumber of Engineto Due DateOperationsShop Time JobLathe (hr)(Days)RemainingRemainingCRS/RO CR Sequence= S/RO Sequence= 4 Example 17.2

Sequencing Multiple-Dimension Rules OperationTime Time atRemainingNumber of Engineto Due DateOperationsShop Time JobLathe (hr)(Days)RemainingRemainingCRS/RO CR Sequence= S/RO Sequence= Example 17.2

Sequencing Multiple-Dimension Rules OperationTime Time atRemainingNumber of Engineto Due DateOperationsShop Time JobLathe (hr)(Days)RemainingRemainingCRS/RO CR Sequence= S/RO Sequence= Example 17.2

Sequencing Multiple-Dimension Rules OperationTime Time atRemainingNumber of Engineto Due DateOperationsShop Time JobLathe (hr)(Days)RemainingRemainingCRS/RO CR Sequence= S/RO Sequence= Example 17.2

Sequencing Multiple-Dimension Rules OperationTime Time atRemainingNumber of Engineto Due DateOperationsShop Time JobLathe (hr)(Days)RemainingRemainingCRS/RO CR Sequence= S/RO Sequence= Sequence Summary Example 17.2

Sequencing Multiple-Dimension Rules OperationTime Time atRemainingNumber of Engineto Due DateOperationsShop Time JobLathe (hr)(Days)RemainingRemainingCRS/RO CR Sequence= S/RO Sequence= Sequence Summary FCFS= Example 17.2

Sequencing Multiple-Dimension Rules OperationTime Time atRemainingNumber of Engineto Due DateOperationsShop Time JobLathe (hr)(Days)RemainingRemainingCRS/RO CR Sequence= S/RO Sequence= Sequence Summary FCFS= SPT= Example 17.2

Sequencing Multiple-Dimension Rules OperationTime Time atRemainingNumber of Engineto Due DateOperationsShop Time JobLathe (hr)(Days)RemainingRemainingCRS/RO CR Sequence= S/RO Sequence= Sequence Summary FCFS= SPT= EDD= Example 17.2

Sequencing Multiple-Dimension Rules OperationTime Time atRemainingNumber of Engineto Due DateOperationsShop Time JobLathe (hr)(Days)RemainingRemainingCRS/RO CR Sequence= S/RO Sequence= Avg Flow Time Avg Early Time Avg Past Due Avg WIP Avg Total Inv ShortestSlack per ProcessingEarliestCriticalRemaining FCFSTimeDue DateRatioOperation Priority Rule Summary Example 17.2

Sequencing Johnson’s Rule

Sequencing Time (hr) MotorWorkstation 1Workstation 2 M11222 M245 M353 M41516 M5108 Example 17.3

Sequencing Johnson’s Rule Time (hr) MotorWorkstation 1Workstation 2 M11222 M245 M353 M41516 M5108 Sequence = Example 17.3

Sequencing Johnson’s Rule Time (hr) MotorWorkstation 1Workstation 2 M11222 M245 M353 M41516 M5108 Sequence = Example 17.3

Sequencing Johnson’s Rule Time (hr) MotorWorkstation 1Workstation 2 M11222 M245 M353 M41516 M5108 Sequence =M3 Example 17.3

Sequencing Johnson’s Rule Time (hr) MotorWorkstation 1Workstation 2 M11222 M245 M353 M41516 M5108 Sequence =M3 Example 17.3

Sequencing Johnson’s Rule Time (hr) MotorWorkstation 1Workstation 2 M11222 M245 M353 M41516 M5108 Sequence =M3 Example 17.3

Sequencing Johnson’s Rule Time (hr) MotorWorkstation 1Workstation 2 M11222 M245 M353 M41516 M5108 Sequence =M3 Example 17.3

Sequencing Johnson’s Rule Time (hr) MotorWorkstation 1Workstation 2 M11222 M245 M353 M41516 M5108 Sequence =M2M3 Example 17.3

Sequencing Johnson’s Rule Time (hr) MotorWorkstation 1Workstation 2 M11222 M245 M353 M41516 M5108 Sequence =M2M3 Example 17.3

Sequencing Johnson’s Rule Time (hr) MotorWorkstation 1Workstation 2 M11222 M245 M353 M41516 M5108 Sequence =M2M3 Example 17.3

Sequencing Johnson’s Rule Time (hr) MotorWorkstation 1Workstation 2 M11222 M245 M353 M41516 M5108 Sequence =M2M3M5- Example 17.3

Sequencing Johnson’s Rule Time (hr) MotorWorkstation 1Workstation 2 M11222 M245 M353 M41516 M5108 Sequence =M2M3M5- Example 17.3

Sequencing Johnson’s Rule Time (hr) MotorWorkstation 1Workstation 2 M11222 M245 M353 M41516 M5108 Sequence =M1M2M3M5-- Example 17.3

Sequencing Johnson’s Rule Time (hr) MotorWorkstation 1Workstation 2 M11222 M245 M353 M41516 M5108 Sequence =M1M2M3M5-- Example 17.3

Sequencing Johnson’s Rule Time (hr) MotorWorkstation 1Workstation 2 M11222 M245 M353 M41516 M5108 Sequence =M1M2M3M4M5---- Example 17.3

Sequencing Johnson’s Rule Time (hr) MotorWorkstation 1Workstation 2 M11222 M245 M353 M41516 M5108 Sequence =M1M2M3M4M5---- Example 17.3

Sequencing Johnson’s Rule Time (hr) MotorWorkstation 1Workstation 2 M11222 M245 M353 M41516 M5108 Sequence =M1M2M3M4M5---- Workstation Day Example 17.3

Sequencing Johnson’s Rule Time (hr) MotorWorkstation 1Workstation 2 M11222 M245 M353 M41516 M5108 Sequence =M1M2M3M4M5---- Workstation M2 (4) M1 (12) M4 (15) M5 (10) M3 (5) Idle—available for further work Day Example 17.3

Sequencing Johnson’s Rule Time (hr) MotorWorkstation 1Workstation 2 M11222 M245 M353 M41516 M5108 Sequence =M1M2M3M4M5---- Workstation M2 (4) M1 (12) M4 (15) M5 (10) M3 (5) Idle—available for further work Day Example 17.3

Sequencing Johnson’s Rule Time (hr) MotorWorkstation 1Workstation 2 M11222 M245 M353 M41516 M5108 Sequence =M1M2M3M4M5---- Workstation M2 (4) M1 (12) M4 (15) M5 (10) M3 (5) Idle—available for further work Day Idle2 1 Example 17.3

Sequencing Johnson’s Rule Time (hr) MotorWorkstation 1Workstation 2 M11222 M245 M353 M41516 M5108 Sequence =M1M2M3M4M5---- Workstation M2 (4) M1 (12) M4 (15) M5 (10) M3 (5) Idle—available for further work Day Idle2 M2 (5) 1 Example 17.3

Sequencing Johnson’s Rule Time (hr) MotorWorkstation 1Workstation 2 M11222 M245 M353 M41516 M5108 Sequence =M1M2M3M4M5---- Workstation M2 (4) M1 (12) M4 (15) M5 (10) M3 (5) Idle—available for further work Day Idle2 M2 (5) 1 Example 17.3

Sequencing Johnson’s Rule Time (hr) MotorWorkstation 1Workstation 2 M11222 M245 M353 M41516 M5108 Sequence =M1M2M3M4M5---- Workstation M2 (4) M1 (12) M4 (15) M5 (10) M3 (5) Idle—available for further work Day Idle2 M2 (5) Idle 1 Example 17.3

Sequencing Johnson’s Rule Time (hr) MotorWorkstation 1Workstation 2 M11222 M245 M353 M41516 M5108 Sequence =M1M2M3M4M5---- Workstation M2 (4) M1 (12) M4 (15) M5 (10) M3 (5) Idle—available for further work Day Idle2 M2 (5) M1 (22) Idle 1 Example 17.3

Sequencing Johnson’s Rule Time (hr) MotorWorkstation 1Workstation 2 M11222 M245 M353 M41516 M5108 Sequence =M1M2M3M4M5---- Workstation M2 (4) M1 (12) M4 (15) M5 (10) M3 (5) Idle—available for further work Day Idle2 M2 (5) M1 (22) M4 (16) Idle 1 Example 17.3

Sequencing Johnson’s Rule Time (hr) MotorWorkstation 1Workstation 2 M11222 M245 M353 M41516 M5108 Sequence =M1M2M3M4M5---- Workstation M2 (4) M1 (12) M4 (15) M5 (10) M3 (5) Idle—available for further work Day Idle2 M2 (5) M1 (22) M4 (16) M5 (8) Idle 1 Example 17.3

Sequencing Johnson’s Rule Time (hr) MotorWorkstation 1Workstation 2 M11222 M245 M353 M41516 M5108 Sequence =M1M2M3M4M5---- Workstation M2 (4) M1 (12) M4 (15) M5 (10) M3 (5) Idle—available for further work Day Idle2 M2 (5) M1 (22) M4 (16) M5 (8) M3 (3) Idle 1 Example 17.3

Sequencing Johnson’s Rule Time (hr) MotorWorkstation 1Workstation 2 M11222 M245 M353 M41516 M5108 Sequence =M1M2M3M4M5---- Workstation M2 (4) M1 (12) M4 (15) M5 (10) M3 (5) Idle—available for further work Day Idle2 M2 (5) M1 (22) M4 (16) M5 (8) M3 (3) Idle 1 Example 17.3

Theory of Constraints  Identify the system bottleneck(s)  Exploit the bottleneck(s)  Subordinate all other decisions to step 2  Elevate the bottleneck(s)  Don’t let inertia set in

Scheduling Services

DayMTWThFSSu Number of employees Required employees Example 17.4

Scheduling Services DayMTWThFSSu Number of employees Employee1 Required employees Example 17.4

Scheduling Services DayMTWThFSSu Number of employees Employee1XXXXX Required employees Example 17.4

Scheduling Services DayMTWThFSSu Number of employees Employee1XXXXX Requirement Required employees Example 17.4

Scheduling Services DayMTWThFSSu Number of employees Employee1XXXXX Requirement Employee2XXXXX Required employees Example 17.4

Scheduling Services DayMTWThFSSu Number of employees Employee1XXXXX Requirement Employee2XXXXX Requirement Required employees Example 17.4

Scheduling Services DayMTWThFSSu Number of employees Employee1XXXXX Requirement Employee2XXXXX Requirement Employee3XXXXX Required employees Example 17.4

Scheduling Services DayMTWThFSSu Number of employees Employee1XXXXX Requirement Employee2XXXXX Requirement Employee3XXXXX Requirement Required employees Example 17.4

Scheduling Services DayMTWThFSSu Number of employees Employee1XXXXX Requirement Employee2XXXXX Requirement Employee3XXXXX Requirement Employee4XXXXX Required employees Example 17.4

Scheduling Services DayMTWThFSSu Number of employees Employee1XXXXX Requirement Employee2XXXXX Requirement Employee3XXXXX Requirement Employee4XXXXX Requirement Required employees Example 17.4

Scheduling Services DayMTWThFSSu Number of employees Employee1XXXXX Requirement Employee2XXXXX Requirement Employee3XXXXX Requirement Employee4XXXXX Requirement Employee5XXXXX Required employees Example 17.4

Scheduling Services DayMTWThFSSu Requirement Required employees Example 17.4

Scheduling Services DayMTWThFSSu Requirement Employee6XXXXX Required employees Example 17.4

Scheduling Services DayMTWThFSSu Requirement Employee6XXXXX Requirement Employee7XXXXX Required employees Example 17.4

Scheduling Services DayMTWThFSSu Requirement Employee6XXXXX Requirement Employee7XXXXX Requirement Employee8XXXXX Required employees Example 17.4

Scheduling Services DayMTWThFSSu Requirement Employee6XXXXX Requirement Employee7XXXXX Requirement Employee8XXXXX Requirement Employee9XXXXX Required employees Example 17.4

Scheduling Services DayMTWThFSSu Requirement Employee6XXXXX Requirement Employee7XXXXX Requirement Employee8XXXXX Requirement Employee9XXXXX Requirement Employee10XXXXX Required employees Example 17.4

Scheduling Services DayMTWThFSSu Employee1XXXXX offoff Employee2XXXXX offoff Employee3XXXXX offoff Employee4 offoff XXXXX Employee5XXXXX offoff Employee6 offoff XXXXX Employee7XXXXX offoff Employee8XXXXX offoff Employee9 off XXXXX off Employee10XXXXX offoff Final Schedule Example 17.4

Scheduling Services DayMTWThFSSu Employee1XXXXX offoff Employee2XXXXX offoff Employee3XXXXX offoff Employee4 offoff XXXXX Employee5XXXXX offoff Employee6 offoff XXXXX Employee7XXXXX offoff Employee8XXXXX offoff Employee9 off XXXXX off Employee10XXXXX offoff Final Schedule DayMTWThFSSu Example 17.4

Scheduling Services DayMTWThFSSu Employee1XXXXX offoff Employee2XXXXX offoff Employee3XXXXX offoff Employee4 offoff XXXXX Employee5XXXXX offoff Employee6 offoff XXXXX Employee7XXXXX offoff Employee8XXXXX offoff Employee9 off XXXXX off Employee10XXXXX offoff Final Schedule DayMTWThFSSu Capacity, C Example 17.4

Scheduling Services DayMTWThFSSu Employee1XXXXX offoff Employee2XXXXX offoff Employee3XXXXX offoff Employee4 offoff XXXXX Employee5XXXXX offoff Employee6 offoff XXXXX Employee7XXXXX offoff Employee8XXXXX offoff Employee9 off XXXXX off Employee10XXXXX offoff Final Schedule DayMTWThFSSu Capacity, C Requirements, R Example 17.4

Scheduling Services DayMTWThFSSu Employee1XXXXX offoff Employee2XXXXX offoff Employee3XXXXX offoff Employee4 offoff XXXXX Employee5XXXXX offoff Employee6 offoff XXXXX Employee7XXXXX offoff Employee8XXXXX offoff Employee9 off XXXXX off Employee10XXXXX offoff Final Schedule DayMTWThFSSu Capacity, C Requirements, R Slack, C - R Example 17.4