MPS Flashcards
MPS
Master Production
Scheduling
Master production scheduling determines
for
products.
An effective MPS provides the basis for
making good use of
manufacturing
resources, making customer delivery
promises, resolving trade-offs between
sales and manufacturing, and attaining the
firm’s strategic objectives as reflected in
the sales and operations plans.
The MPS specifies what products
to
produce, how much to produce, when the
production will be
completed
The MPS shows when products will be
available in the future, thereby providing the
basis for promising delivery dates to
customers
Approaches to MPS
Chase strategy Produce as demanded Level strategy Maintain constant output rate Level strategy is used in JIT (Just-in-time) for rate-based MPS
In a make-to-stock environment,
the MPS is a
statement of how much of each end item to be
produced and when it will be available
In an assemble-to-order environment,
the large
number of possible product combinations is
represented with a planning bill of materials
ATP
Available-to-Promise
ATO
assemble to order
In an assemble-to-order (ATO) environment,
the
number of possible end items can be huge
The bills of materials (BOM) for specific end
items are replaced
with a planning bill of materials, which represents the potential product combinations One type of planning BOM is the super bill , which describes the usage of options and components that make up the average product
When a planning BOM is used,
the final assembly schedule (FAS) is often used FAS states the set of end products to be built over a time period Two-level MPS coordinates component production and the FAS Component production is controlled by the MPS with a planning BOM Final assembly is controlled by the FAS
A stable MPS translates
to stable component
schedules
Stability allows improved plant performance
Excessive MPS changes can lead to reduced
productivity
Failure to change the MPS in response to
demand changes can lead to reduced
customer service and increased inventory
