72 ◾ Lean Production Simplified, Third Edition
maintained through the process sequence). The purpose of a cell is to achieve
and maintain efficient continuous flow (which is discussed in Chapter 5).
Takt time also allows us to grasp our production condition at a glance.
For example, if takt time is 1 minute, we should see a product moving past
us every minute.
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If a product moved past every two minutes, we would
know that there was a problem downstream. This shared understanding
motivates quick countermeasures, to get the line moving again, and a kai-
zen, to eliminate the root cause of the problem.
Work Sequence
The work sequence defines the order in which the work is done in a given
process. For example, the team member might have to
◾ Pick u ...