Using MRP Outputs
MRP Netting
· Used in MRP
· Used in TPOP
· Used in DRP Netting
MRP Extensions
· Time-phased order point (TPOP)
o Advantages
1. Keeps open-order due dates valid
2. Furnishes capacity planning system with the item’s planned orders
3. Plans gross requirements for the item’s components
· Distribution requirements planning
o Determines need for replenishments at branch warehouses
o Used time phased order approach
MRP Outputs
· Exception Report
· Action Report
· Pegging Report
Changes Affecting MRP Plan
· Engineering changes
· Excess Scrap
· Inventory corrections
· Lot Size changes
· Customer revision of orders
· Supplier/production issues
· MPS revisions
Replanning
· Action report may suggest to:
o Expedite order
o Release a planned order
o Cancel firm planned order/scheduled receipt
o Delay firm planned order/scheduled receipt
o Look into firm planned order/scheduled receipt
Pegging
· Allow users to trace item’s gross requirements to parent sources
· Best to go up one level and use single-level pegging to resolve demand-supply mismatches…try to resolve them as low in the product structure as possible
· Full Pegging
o Allows user to link item demand all the way back to the MPS
o Useful for engineer-to-order, make-to-order, and products having few common components
o Modifying MPS is last resort
· Where used list
o Displays quantity of every parent item to produce one unit of a component
Firm Planned Orders
· Overrides MRP logic when an order is put in firm planned status by user
Planning Parameters
· Lot Size
· Lead Time: largest componenet of manufacturing LT is queue time
· Safety Stock
· Safety Lead Time
Closing the Loop
· Who furnishes information?
· Who uses information?
I'm a supply chain analyst for a large corporation and after studying hard, finally passed all 5 CPIM APICS exams. Help yourself to my study notes and the information in my blog posts, and good luck!
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