Drum buffer rope

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Drum-Buffer-Rope is one of Eliyahu M. Goldratt developed on the Theory of Constraints BASED production planning system . It is based on the assumption that there is a constant bottleneck in a value chain for a longer period of time. This bottleneck is used to simplify control and optimize throughput.

The concept was adapted in the field of multi -project management and is referred to there as critical chain project management .

concept

Illustration drum-buffer-rope control based on Herbie (smallest and slowest) during a scout hike from Eliyahu M. Goldratt "the goal"

The aim of production control is to optimize throughput. The optimal throughput is achieved when the bottleneck is optimally utilized. Drum buffer rope describes three control elements to achieve this goal.

Drum

It is based on the theory that it is harmful and at best useless to work on the utilization of non-bottleneck capacities. The goal must therefore be to only pay attention to the utilization of the bottleneck resource. At the bottleneck of the cycle of production, the drum (will thus drum ) beaten. All planning and control measures have to be based on the bottleneck.

Buffer

Faults in upstream systems are unavoidable with all due care. In any case, it should be avoided that these disruptions affect the bottleneck and lead to reduced utilization. For this reason, a buffer ( buffer ) before the bottleneck installed. This can be realized from a buffer store with a defined stock or by an additional time interval between order release and bottleneck.

Rope

The work progress at the bottleneck and thus the size of the buffer controls the release of new and prioritization of current orders. One can like a rope ( Rope ) imagine where the jobs are pulled through the production.

literature

  • Goldratt, Eliyahu M .: The goal: A novel about process optimization , Campus, Frankfurt 4th edition 2008, ISBN 978-3-593-38568-6
  • Techt, Uwe: Goldratt and the Theory of Constraints: The Quantum Leap in Management , Edition La Colomber, Moers 2006, 4th edition - ISBN 978-3-929351-31-6
  • Anderson, David: Agile Management for Software Engineering: Applying the Theory of Constraints for Business Results , Prentice Hall, 2004, ISBN 0-13-142460-2

Web links