Manufacturing Operations · Capacity planning · Component
The capacity model
Practical output per period, per resource, with the constraint identified — because output is set by one step and not by the average.
The deliverable
What it is
Capacity is set by the constraint. Adding capability anywhere else changes cost without changing output, which is why so much capital investment produces no measurable improvement.
Theoretical capacity is a specification; practical capacity, after maintenance, changeover and variability, is what plans should be built on.
One level in
What it is made of
Each element is a constituent part of the component. Follow one to see the attributes it carries.
The resources
Each resource with its practical output per period.
3 attributes: Resource · Practical output · Theoretical output
LearnThe constraint
The resource that actually limits total output.
3 attributes: Constraint resource · System output · Identified
LearnThe deductions
What reduces theoretical capacity to practical capacity.
3 attributes: Deduction · Share lost · Addressable
Learn
Re-identify the constraint after every capacity change. Relieving one constraint creates the next.