Protection Period

Protection-Period Demand

The protection period is review period plus lead time, then demand is exact multiplication.

highlighted = computed this step

Review plus lead

The protection period covers the review period plus the lead time.

P+LP+L
Protection periodThe chart recomputes the protection period and order-up-to level.periodic review order-up-toS = 18 + 5 = 23protection periodreview 4 dayslead 2 daysprotection demand 3 x 6 = 18inventory position and order quantitysnapshoton handon orderbackorderspositionqdecisionsnapshot7401112order 12position high2500250order 0q = max(S - position, 0)deterministic demand and lead time only

Protection period

4 days plus 2 days gives 6 days.

4+2=64 + 2 = 6
Protection periodThe chart recomputes the protection period and order-up-to level.periodic review order-up-toS = 18 + 5 = 23protection periodreview 4 dayslead 2 daysprotection demand 3 x 6 = 18inventory position and order quantitysnapshoton handon orderbackorderspositionqdecisionsnapshot7401112order 12position high2500250order 0q = max(S - position, 0)deterministic demand and lead time only

Protection demand

Protection-period demand is 18 units.

3×6=183 \times 6 = 18
Protection periodThe chart recomputes the protection period and order-up-to level.periodic review order-up-toS = 18 + 5 = 23protection periodreview 4 dayslead 2 daysprotection demand 3 x 6 = 18inventory position and order quantitysnapshoton handon orderbackorderspositionqdecisionsnapshot7401112order 12position high2500250order 0q = max(S - position, 0)deterministic demand and lead time only