OPM H11 Resource Planning
Resource planning = a process that takes sales and operations plan
Processes information in the way of time standards, routings, and other
information on how services or products are produced; and then plans the
input requirements
Materials requirements planning (MRP) = a computerized information system
developed specifically to help manufactures manage dependent demand inventory
and schedule replenishment orders
MRP explosion = a process that converts
the requirements of various final products
into a material requirements plan that
specifies the replenishment schedules of all
the subassemblies, components, and raw
materials needed to produce final products
Dependent demand = the demand for
an item that occurs because the quantity
required varies with the production plans
for other items held in the firm’s inventory
Parent = an product that is manufactured
from one or more components
Component= an item that goes through
one or more operations to be
transformed into or become part of one
or more parents Figuur 1 Parent inventory Figuur 2 Component demand
Master production schedule (MPS) = a part
of the material requirements plan that details how
many end items will be produced within specified
periods of time
In a MPS:
- Sums of quantities must equal sales and
operations plan
- Production quantities must be allocated
efficiently over time
- Capacity limitations and bottlenecks may
the timing and size of MPS quantities
1
, Figuur 3 MPS Process
MPS opstellen:
1. Calculate projected on-hand inventories
2. Determine the timing and size of MPS quantities
- Goal is to maintain a nonnegative projected on-hand
inventory balance
- As shortages in inventory are detected, MPS
quantities should be scheduled to cover them
Available-to-promise (ATP) inventory:
- The quantity of end items that marketing can promise
to deliver on specific dates
- It’s the difference between the customer orders
already booked and the quantity that operations is
planning to produce
Freezing the MPS disallow changes to the near-
term portion of the MPS
Reconciling the MPS with Sales and Operations
Plans
MRP Explosion:
- Bill of materials (BOM) = a record of all the
components of an item, the parent-
component relationship, and the usage
quantities derived from engineering and
process designs
- End items
- Intermediate items
- Subassemblies
- Purchased items
- Part commonality
2
Resource planning = a process that takes sales and operations plan
Processes information in the way of time standards, routings, and other
information on how services or products are produced; and then plans the
input requirements
Materials requirements planning (MRP) = a computerized information system
developed specifically to help manufactures manage dependent demand inventory
and schedule replenishment orders
MRP explosion = a process that converts
the requirements of various final products
into a material requirements plan that
specifies the replenishment schedules of all
the subassemblies, components, and raw
materials needed to produce final products
Dependent demand = the demand for
an item that occurs because the quantity
required varies with the production plans
for other items held in the firm’s inventory
Parent = an product that is manufactured
from one or more components
Component= an item that goes through
one or more operations to be
transformed into or become part of one
or more parents Figuur 1 Parent inventory Figuur 2 Component demand
Master production schedule (MPS) = a part
of the material requirements plan that details how
many end items will be produced within specified
periods of time
In a MPS:
- Sums of quantities must equal sales and
operations plan
- Production quantities must be allocated
efficiently over time
- Capacity limitations and bottlenecks may
the timing and size of MPS quantities
1
, Figuur 3 MPS Process
MPS opstellen:
1. Calculate projected on-hand inventories
2. Determine the timing and size of MPS quantities
- Goal is to maintain a nonnegative projected on-hand
inventory balance
- As shortages in inventory are detected, MPS
quantities should be scheduled to cover them
Available-to-promise (ATP) inventory:
- The quantity of end items that marketing can promise
to deliver on specific dates
- It’s the difference between the customer orders
already booked and the quantity that operations is
planning to produce
Freezing the MPS disallow changes to the near-
term portion of the MPS
Reconciling the MPS with Sales and Operations
Plans
MRP Explosion:
- Bill of materials (BOM) = a record of all the
components of an item, the parent-
component relationship, and the usage
quantities derived from engineering and
process designs
- End items
- Intermediate items
- Subassemblies
- Purchased items
- Part commonality
2
