The turn-around time (English lead time) is the time, which needs a for going through a system. The computation of the turn-around time depends on the respective system and

Turn-around time in the manufacturing

Within the manufacturing the turn-around time designates the time interval, which is needed by beginning of the treatment up to the completion of a product. In detail the turn-around time sits down thereby together from preparation time, operating time and downtime.

In the context of the sequence problem, which is solved by Scheduling, the three times are differentiated as follows:

• The downtime is the inadvertent waiting period of the product within the production system.
• The operating time is the time, which is needed technologically for the production of the product. For this therefore also intended downtime counts like e.g. a drying after painting.
• The preparation time results from the characteristic of some resources to be able to implement different working on. For this resources must become transferred into the correct condition however (prepared). A simple example is a baking-oven, which can bake different things only with different temperatures.

The downtime and the preparation time are the times, which can be optimized within a production system. This optimization potential can be quite very large. On the industry downtimes of over 90% rarity are not dependent.

Turn-around time reduce

The goal in the manufacturing should always be it the costs of a production order as possible to keep as small. This can be achieved by reduction of the turn-around time, whereby during the reduction the quality of the manufacturing may not become leg pregnant.

• There is the possibility the capacity of a job to increase on the one hand. By the higher capacity can become more gefertig in same time.
• Second possibility for the reduction of the turn-around time is to be saved it for preparation time. Around this to manage should homogeneous orders, which are to be manufactured time near into an order are combined. Thus not the preparation time develops, but only for one for each order.
• As the third possibility the downtime can be reduced as the production plants is meaningfully arranged.

See also

• Control theory
• Logistikcontrolling

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