
LeveLIng and heIjunka 61
piece flow or via a FIFO process, and therefore need no schedule. Prior processes
upstream of the schedule would be attached via a pull system, and would simply
make what the schedule had pulled out of the supermarket that it supplies, there-
fore also requiring no schedule. e result of this is that all processes are basically
making to the exact same schedule that was put at the single schedule point, and
no inventory is built other than that called for by replacing what was used in the
supermarket.
To review heijunka:
• e main purpose is to balance demand and capacity.
• S&OP deals with volume and setting takt t