MRP theory

 0    7 flashcards    dklekowski
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bull-whip effect
bắt đầu học
small order changes in downstream demand lead to large upstream variation -> high unwanted inventories
lumpy demand effect
bắt đầu học
Rip systems not first for unexpected, high demands
unreliability effect
bắt đầu học
FG product consists of 5 parts, each of availability of 95%, then FG availability 77%
BOM
bắt đầu học
bills of material
special BOMs
bắt đầu học
modular bills, planning bills, phantom bills (used for subassies that exist temporarily
MRP requirements
bắt đầu học
computer system necessary, mainly discrete products, accurate bill-of-material, accurate inventory status, stable lead time, problem with frequent re-planning
Four periods in the Rolling MPS
bắt đầu học
Frozen - until week 4, new orders cannot enter and we can't change them; Firm - orders confirmed by customers; Full - we can shift things; Open - we can still assemble orders, we don't have to plan yet

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