Page 209 - Orlicky's Material Requirements Planning
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188 PART 3 Managing with the MRP System
FIGURE 10-5 Input
Queue with
priority strata.
Pump
Current Requirements
Lead Live
Time Queue
Near-Future Requirements
Dormant Deferred Requirements Output
Dead No Requirements
Drain
FIGURE 10-6
Relative Absolute
Relative and Priority Priority
Way Behind
absolute priority.
First Schedule
Active
Behind Queue
Schedule
Second
On
Schedule
Third
Ahead
of Schedule
Fourth
Remove
Way Ahead from Floor
of Schedule
Fifth
Scrap
Requirements
Sixth No
posedly represent current load. The assumption is that every one of the jobs is eligible, in
priority sequence, to be worked on in the current period. In reality, this is not necessari-
ly so. For purposes of valid queue analysis, it is not sufficient to stratify the queue by
merely relative priority—absolute priority also must be taken into account. Relative pri-
