Toyota Way Fieldbook : A Practical Guide for Implementing Toyota's 4Ps

162 THETOYOTAWAYFIELDBOOK

stream also includes the selection of a portion of the stream (processes) to focus
on during the initial lean efforts. Usually we look at the production volumes of
all products to determine where the dices should be. When the product mix is
diced in this manner we invariably find that the volumes fall into three groups:
a top group with the most significant demand; a second group roughly one-half

Value Stream Family A

Value Stream Family B

Value Stream Family C

Value Stream Family D

Value Stream Family E

Value Stream Family F

Value Stream Family G

Figure 7-3. The operation sliced into value streams

Process

1

Figure 7-4. A value stream slice with a section diced