CH 5 : Strategic Capacity Planning Flashcards
capacity
upper limit on the load that an operating unit can handle, usually measured as max output rate, throughput, or production rate
strategic capacity planning
used to achieve a match between long term supply capabilities of an organization and predict long term demand
capacity planning
process of establishing the output rate that can be achieved at a facility
overcapacity results in
operating costs that are too high
under capacity results in
strained resources and possible loss of customers
importance of long term capacity
impacts ability to meet future demands, affects operating costs, major determinant of initial costs, involves long-term commitment, affects competitiveness, affects ease of management, globalization has increased complexity of capacity decisions, involve substantial financial resources
efficiency
ratio of actual output rate to effective capacity
efficiency equation
actual output rate / effective capacity x 100%
capacity utilization
the ratio of actual output to design capacity (how much of the available capacity is being used)
capacity utilization equation
actual output / design capacity x 100%
design capacity
maximum obtainable output rate under ideal conditions
effective capacity
maximum output rate given work breaks, product mix, scheduling difficulties, equipment maintenance, delays, and other realities
factors influencing capacity
facilities and machines, product mix, workers, planning and operational factors, supply chain management, external factors
strategic capacity planning process
- forecast demand of products
- calculate capacity requirements to meet forecast
- measure existing capacity and decide how to bridge gaps (generate alternatives, evaluate alternative economically, consider non economic aspects, choose best alternative)
major considerations for developing capacity alternatives
design flexibility into the system
take stages of life cycle into account
take a big picture approach to capacity changes
choose capacity timing and increments
prepare to deal with chunks
attempt to smooth out capacity requirements
use capacity cushion
identify optimal operating level
bottle neck operation
an operation in a sequence of operations whose capacity is lower than that of the other operations (longer length)
leading strategy
plan to make capacity available just before demand occurs because construction of capacity takes a long time, more risky, greater potential for reward