Performances mesurament - University Carlo Cattaneo
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Performances mesurament
Transcript of Performances mesurament - University Carlo Cattaneo
Performances mesurament
Outline
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Performance measurement
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Definitions
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Synthetically:
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Example
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1-Delivery lead time to produce a product with a quality ok = external performance that can be measured by the client
3-Percentage of waste intercepted by quality control = internal performance of interest for the firm
2-Level of machines obsolescence = operative condition
Performance measurement system design
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Performance measurement system design
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Performance measurement system design
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Performance framework
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• The fundamental objective is to evaluate at the same time:
EFFECTIVENESS
in serving the “client”
EFFICIENCY
in using the resources
To manage industrial production effectively, we need the capability to measure and control the performances of the logistic-production system, as this is the way to reach a
high profitability.
Performance framework
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The general framework
SERVICE
Assistance pre-sales
post-sales
Accuracy
Punctuality
Customization
Availability
Timeliness
Plans flexibility
Volume flexibility (elasticity)
Product flexibility
FLEXIBILITY
QUALITY
Compliance in field
Project quality
PRODUCTIVITY
In house compliance
(waste)
Materials (direct, indirect) Capital (fixed, circulanting)
Workforce (direct, indirect) Machines
Mix flexibility
Availability
More that “Performances” it is fundamental to measure the “components” (or the
“determinants”)
The measurement of internal performances
Efficiency (or productivity) performance
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Productivity
Productivity of production resources
Warehouses productivity
Workforce
Plants
Stock turnover and covering
ABC-ABC analysis
Materials
Availability and potentiality
Internal performances
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The reference framework for internal performances
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Solar T
Opening T
Theor. use T.
Actual use T.
Actual prod. T
Cutting T
Good prod. T
(1) (2) (3) (4) (5) (6)
Ts T
TGP TSP
TS TTest
Tbreak + TMaint
TO
TLO TLM
TST (3)/(2) = availability (4)/(1) = use
Availability
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TOTSTTLMTLOTTMaTBreakTOTSTTLMTLOTA
−−−−
−−−−−−=
int
Production potentiality
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Potentiality
Theoretical Pt
Mix Pmix
Ideal production conditions: only one product and standard
condition of production rate
Real conditions: mix of many products, different
production rates depending on the product
that is produced
The potentialities
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Mix Potentiality
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requiredTimeproducedQuantity
Pmix =
Mix Potentiality
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!!
( )∑∑
++
+=
i ii TSTSpTGp
QPmix
)SP(QGP * )/RS(RS iiik
Exercise
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Product 1 Product 2 QGP1 500.000 Unit QGP2 480.000 Unit QSP1 16.000 Unit QSP2 2.400 Unit Rs1 800 Unit/hours Rs2 600 Unit/hours TGp1 625 Hours TGp2 800 Hours TSp1 20 Hours TSp2 4 Hours
TS 40 Hours
( )∑∑
++
+=
i ii TSTSpTGp
QPmix
)SP(QGP * )/RS(RS iiik
Standard available capacity
( )TLoTstTtestTAPmixPCA −−−⋅⋅=
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Productivity measures
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Input Output
P = OutputInput
Productivity measures
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Productivity = Production volume (expressed in a certain unit of measurement)
Level of use of a certain production factor
Material Productivity
Machine productivity
Workforce productivity
Productivity measures
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Productivity measures
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TTTest-TMaint-TBreak-TO-TST-TLM-TLO-T=U
TTS+TSP+TGP=U
USE (U) = ACTUAL PRODUCTION TIME OPENING TIME
Productivity measures
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PAID HOURS ACTUAL PRODUCTION TIME = (U) USE
TTTest-TMaint-TBreak-TO-TST-TLM-TLO-T=U
TTS+TSP+TGP=U
Productivity measures
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The concept of standard time is fundamental.
( )[ ]( )[ ]∑
∑TS + TSP + TGP
TS + TSP + TGP =
ii
iiη The concept of
standard time is fundamental
ACTUAL PRODUCTION HOURS Actual Production in std. hours = η
TGPi
Productivity measures
factor PRODUCTIVITY USE YIELD
WF hours paid volumeproduced
h. paid
h. workedactual h. workedactual
std. h.in vol.
MAC cap. installed volumeproduced
h. openingh. prod act.
h. prod. actualstd. h.in vol.
MAT used mater. volumeproduced
consum. actualconsum. theor.
consum. theor.materialin vol.
P (productivity)= U*η
PCA= Pmix*T*(U*η)
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