Page 485 - Orlicky's Material Requirements Planning

462 PART 4 Looking Backward and Forward

FIGURE 27-6
Planning Buffer
Buffer and Status
Buffer status alert
zones. Zone Levels Alerts

G G

Y R

Y
On-Hand Alert
Level (50%) R
R

zones used for planning and the ways in which the buffer status alerts translate those lev-
els and zones for execution purposes.
As shown in the figure, the top half of the red zone from a planning perspective is
actually a yellow zone position from an on-hand perspective. Figure 27-7 is another
graphic depiction. If the desired distribution of on-hand inventory is in the lower half of

FIGURE 27-7
Buffer status alert zones—another view.

Number of Parts/SKU Desired On-Hand Inventory
Alignment

DR R Y G B Planning Perspective

DR R Y G B On-Hand Perspective