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JN FACTORY CASES
 
  3. DECREASING SET UP TIMES
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In many organizations a lot of attention is paid to the reduction of set up times, regardless whether or not the resource is a constraint. Let's have a look again to the basic model of the JN-factory.

Let's assume we have implemented some changes. The result of those changes is that we are now able to do the set up resource B in just 20' in stead of the 180' before.

What are then the consequence of reducing set up of B to 20'?

Throughput Will it increase the output of the factory ? Or, will we be able to sell one product more by the set up reduction ?
No, because the constraint did not change !
Will the changes increase Throughput?
NO, the changes will not increase Throughput.
Inventory Did the changes directly decrease Inventory ? Did the reduction in set up time reduce the WIP?
Probably not. May be the buffersize?
Operating Expenses Did the Operating Expenses increase ?
Probably.

Can you think of any other merits of reducing the batchsizes on NON Constraints?
What about effect on buffersizes?