Master production schedule (MPS)
This schedule indicates the quantity & timing of planned
completed production
- Breaking down the aggregate plan into specific product requirements
- The heart of production planning & control
The Master Scheduler
The duties of the master scheduler generally include
- Evaluating the impact of new orders
- Providing delivery dates for orders
- Dealing with problems
- Evaluate impact of production delays or late deliveries
- Revise the master schedule when necessary
- Bringing instances of insufficient capacity to the attention of production & marketing personnel so that they can participate in resolving conflicts
Master scheduling process
A master schedule indicates the quantity & timing
(delivery times) for a product, or a group of products, but it does not show planned
production.
Time fence: Points in time that separate phases of a
master schedule planning horizon
- Divide scheduling time horizon into three section/phase Frozen, Slushy & Liquid
Frozen is near-term phase, delivery of a new order
would be impossible or only possible using very costly or extraordinary options
such as delaying another order
Slushy is the next phase, order entry in this phase
necessitates trade-offs less costly
Liquid is the farthest out on horizon, new orders or
cancellations can be entered with ease
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