28-02-2013, 11:08 AM
Evolution of ERP
Evolution of ERP.ppt (Size: 465.5 KB / Downloads: 29)
Prerequisites
Material Requirements Planning (MRP)
MRP Logic and Product Structure Trees
Time Fences
MRP Example
MRP II and Lot Sizing
Material Requirements Planning
Materials requirements planning (MRP)
is a means for determining the number of parts, components, and materials needed to produce a product
Types of Time Fences
Frozen
No schedule changes allowed within this window
Moderately Firm
Specific changes allowed within product groups as long as parts are available
Flexible
Significant variation allowed as long as overall capacity requirements remain at the same levels
Material Requirements Planning System
Based on a master production schedule, a material requirements planning system:
Creates schedules identifying the specific parts and materials required to produce end items
Determines exact unit numbers needed
Determines the dates when orders for those materials should be released, based on lead times
Primary MRP Reports
Planned orders to be released at a future time
Order release notices to execute the planned orders
Changes in due dates of open orders due to rescheduling
Cancellations or suspensions of open orders due to cancellation or suspension of orders on the master production schedule
Inventory status data
Manufacturing Resource Planning (MRP II)
Goal: Plan and monitor all resources of a manufacturing firm (closed loop):
manufacturing
marketing
finance
engineering
Simulate the manufacturing system