Chapter 7 Constraint Management Flashcards
Bottleneck
A capacity constraint resource (CCR) whose available capacity limits the organization’s ability to meet the product volume, product mix, or demand fluctuation required by the marketplace
Theory of constraints
A systematic management approach that focuses on actively managing those constraints that impede a firm’s progress toward its goal
Throughput time
Total elapsed time from the start to the finish of a job or a customer being processed at one or more work enters
Drum buffer rope (DBR)
A planning and control system that regulates the flow of work in progress materials at the bottleneck or the capacity constrained resource (CCR) in a productive system
Line balancing
The assignment of work to stations in a line process so as to achieve the desired output rate with the smallest number of workstations
Work elements
The smallest units of work that can be performed independently
Immediate predecessors
Work elements that must be done before the next element can begin
Precedence diagram
A diagram that allows one to visualize immediate predecessors better; work elements are denoted by circles, with the time required to perform the work shown below each circle
Theoretical minimum TM
A benchmark or goal for the smallest number of stations possible, where the total time required to assemble each unit (the sum of all work-element standard times) is divided by the cycle time
Balance delay
The amount by which efficiency falls short of 100%
Pacing
The movement of product from one station to the next as soon as the cycle time has elapsed
Mixed model line
A production line that produces several items belonging to the same family
Constraint
Any factor that limits the performance of a system and restricts its output. In linear programming a limitation that restricts the permissible choices for the decision variables
