Lecture Introduction to operations management - Chapter 13: Scheduling operations. In this chapter we will discuss: Batch scheduling, gantt charting, finite capacity scheduling, theory of constraints, priority dispatching rules, planning and control systems. | Operations Management Contemporary Concepts and Cases Chapter Thirteen Scheduling Operations Copyright © 2011 by The McGraw-Hill Companies, Inc. All rights reserved. McGraw-Hill/Irwin Chapter 13 Outline Batch Scheduling Gantt Charting Finite Capacity Scheduling Theory of Constraints Priority Dispatching Rules Planning and Control Systems Synonyms Shop Floor Control Scheduling Operations Production Activity Control (PAC) Detailed Planning and Scheduling (DPS) Scheduling Operations Last and most constrained decision in the capacity planning hierarchy Results in a time-phased plan Time frame ranges from a few hours to a few months Has conflicting objectives High efficiency Low inventories Good customer service Batch Scheduling Very complex scheduling environment Can be thought of as “Network of Queues” Customers or jobs spend most of their time at work stations waiting to be processed Typical for actual work to be 20 percent or less of the total throughput time Closely related to MRP (see Chapter 16) Batch Processing Move-queue-work-wait-move WS 1 WS 2 Work is done according to work orders wait move queue move move wait queue move move move Difficulties Of Batch/Job Shop Scheduling Variety of jobs processed Different routing and processing requirements of each job Number of different orders in the facility at any one time Competition for common resources Responsibilities of Production Control Department Loading Check availability of material, machines & labor Sequencing Release work orders to shop & issue dispatch lists for individual machines Monitoring Maintain progress reports on each job until it is complete Gantt Charting Proposed by Henry Gantt in 1917 Machine performance measures: Makespan – total time to complete a set of jobs Machine utilization – percent of make span time a machine (or person) is used. Used primarily to monitor progress of jobs One technique for executing the production plan Job Data for Scheduling Example 13- Scheduling . | Operations Management Contemporary Concepts and Cases Chapter Thirteen Scheduling Operations Copyright © 2011 by The McGraw-Hill Companies, Inc. All rights reserved. McGraw-Hill/Irwin Chapter 13 Outline Batch Scheduling Gantt Charting Finite Capacity Scheduling Theory of Constraints Priority Dispatching Rules Planning and Control Systems Synonyms Shop Floor Control Scheduling Operations Production Activity Control (PAC) Detailed Planning and Scheduling (DPS) Scheduling Operations Last and most constrained decision in the capacity planning hierarchy Results in a time-phased plan Time frame ranges from a few hours to a few months Has conflicting objectives High efficiency Low inventories Good customer service Batch Scheduling Very complex scheduling environment Can be thought of as “Network of Queues” Customers or jobs spend most of their time at work stations waiting to be processed Typical for actual work to be 20 percent or less of the total throughput time Closely related to .
