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The primary purpose of shop floor timekeeping, insofar as its relationship to production scheduling, is to declare what has happened on the shop floor.

This fundamentally consists of reporting which operations have been completed as well as which operations have begun but remain in-work.

With "knowing" what work has been completed and what remains in-work, PROSPAC's scheduling "engine" is able to determine:

bulletwhat was completed that was scheduled to complete
bulletwhat was not completed that should have been
bulletwhat was completed that was not scheduled
bulletwhat was completed before it was scheduled
bulletwhat was completed out-of-sequence

With this information the scheduling "engine" adapts itself to what has actually happened on the shop floor.  These realities are reflected in the generation of the next periodic schedule.

When PROSPAC was first used on a shop floor in 1968, it quickly became apparent that there needed to be a way that was both easy and reliable for declaring to the scheduling "engine" what was actually being accomplished on work orders to which the shop had committed itself.

It didn't take long to figure out that the information machine operators placed on their timecards in order to get a paycheck was a source that was:

bulletgenerally reliable in terms of data accuracy
bulletreadily accessible from an established system
bulletavailable on a regular and timely basis

The idea is to make it as simple as possible to obtain this essential information by placing the least possible additional burden on machine operators, leads or foremen.  What better way than to "tap into" an existing source of data whose entrants are already appropriately motivated!

 

 

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Last modified:  October 13, 2001