Protection and Cards

Card Count

The card count is the ceiling of protected demand divided by container size.

highlighted = computed this step

Divide by container

Divide protected demand by container size.

protected demand/container size\text{protected demand}/\text{container size}
Kanban cardsThe chart shows protected demand and the containers needed to cover it.kanban cardslead-time demand 20 x 2 = 40safety allowance 40 x 1/4 = 10protected demand 50; container 10base: protected 50K1K2K3K4K55 cardswhat-if 1: protected 40K1K2K3K44 cardscasesafetylead demandsafety allowanceprotectedcardsbase1/44010505what-if 10400404deterministic sizing rule with a policy safety factor

Exact ratio

50 protected units divided by 10 units per card gives 5 cards.

50/10=550 / 10 = 5
Kanban cardsThe chart shows protected demand and the containers needed to cover it.kanban cardslead-time demand 20 x 2 = 40safety allowance 40 x 1/4 = 10protected demand 50; container 10base: protected 50K1K2K3K4K55 cardswhat-if 1: protected 40K1K2K3K44 cardscasesafetylead demandsafety allowanceprotectedcardsbase1/44010505what-if 10400404deterministic sizing rule with a policy safety factor

Card count

The kanban card count is 5.

kanban cards=5\text{kanban cards}=5
Kanban cardsThe chart shows protected demand and the containers needed to cover it.kanban cardslead-time demand 20 x 2 = 40safety allowance 40 x 1/4 = 10protected demand 50; container 10base: protected 50K1K2K3K4K55 cardswhat-if 1: protected 40K1K2K3K44 cardscasesafetylead demandsafety allowanceprotectedcardsbase1/44010505what-if 10400404deterministic sizing rule with a policy safety factor