Exploiting the Inverse Capacity-Rate Relationship in a Stochastic Setting
Modul 5 Flow Rate and Capacity Analysis
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Transcript of Modul 5 Flow Rate and Capacity Analysis
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Jurusan teknik industri
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Industrial Engineering-ITS 2
Mahasiswa memahami resources and resources pool
Mahasiswa memahami flow rate measurement
Mahasiswa memahami efek dari product mix
Mahasiswa memahami faktor lain yang berpengaruh padakapasitas proses
Mahasiswa memahami levers untuk managing throughput
Sasaran Kompetensi yang hendak dicapai
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Industrial Engineering-ITS 3
Most successful airlines and most consistency
profitable airlines
Load factors Number of passenger miles flown
Most successful automotive company
Production rate (Takt time and cycle time)
Case study (southwest airlines and toyota)
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Industrial Engineering-ITS 4
Airbus A380-800
Capacity = 800
Load factors
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Industrial Engineering-ITS 5
Average flow rate: is the average number of
flow units that flow through the process per unit
of time
Process capacity is the maximum sustainable
flow rate of a process
Flow rate and process capacity
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Industrial Engineering-ITS 6
Resource pool: is a collection of
interchangeable resources that can perform an
identical set of activities
Resource unit: is each unit in a resources pool
Unit loads: total amount of time the resourcesworks to process each flow unit
Resources and resource pool
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Table 5.1 and 5.2
Computing
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Theoretical capacity of a resources unit is its
maximum sustainable flow rate if it were fully
utilized (without interruptions, downtime, time
wasted etc)
Theoretical capacity of a resources pool is the
sum of the theoretical capacities of all theresource unit in pool
Theoretical capacity
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Theoretical capacity of a resource unit (in
resource pool p) = 1/unit load = 1/Tp
Rp = Cp/Tp
Computing theoretical capacity
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Industrial Engineering-ITS 10
Table 5.3
Computing
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Industrial Engineering-ITS 11
Load batching resources can process several
flow units simultaneously
Scheduled availability : the amount of timethat a resource is scheduled for operation
Others factors
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Theoretical capacity of a resource unit = 1/Tp x
load batch x scheduled availability
Rp = Cp/Tp x load batch x scheduled
availability
Computing theoretical capacity
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Industrial Engineering-ITS 13
table 5.4
Computing
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Industrial Engineering-ITS 14
Throughput of a process is the average
number of flow units processed over a given
period of time
Capacity utilization : the degree to which
resources are effectively utilized by a process
Throughput and capacity utilization
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capacity utilization of resource pool p =
throughput/theoretical capacity of resource
pool p
Pp = R/Rp
Computing theoretical capacity
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Industrial Engineering-ITS 16
table 5.5
Computing
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Effect of product mix on theoretical capacity
and profitability of a process
learning
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Industrial Engineering-ITS 18
THANK
YOU
