BIT 3464 Lecture Notes - Lecture 20: Spare Parts Management, Anxiety, Production Planning
6 Dec 2016
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Document Summary
Computerized inventory control & production planning system. Schedules component items when they are needed - no earlier and no later. Basic mrp processes: explosion - exploding the bill of material, netting out inventory, lot sizing batching , time-phasing requirements. Name or number identifying scheduled item: llc low-level-code; lowest level at which item appears in a product structure, lot size. Order multiples of this qty; can be min/max qty: lt (lead time) time from order placement to receipt, pd (past-due) Demand for item by time period: scheduled receipts. Quantity already on order & receipt date. Released orders become scheduled receipts: projected on hand. Expected on-hand inventory at end of period: net requirements. Net amount needed after on-hand adjustments: planned order receipts. Net requirements adjusted for lot-sizing: planned order releases. Planned order receipts offset by lead time. Technical issues: time bucket, action bucket, bucketless system, availability checking, allocation, & order launching, processing frequency.
