Transcript Presentation for my Defense

Basics of Asset Management
Prof. Tarek Hegazy
© Tarek Hegazy – www.civil.uwaterloo.ca/tarek
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Agenda

Infrastructure Asset Mgmt: A Challenge

Current Developments
 Components
 Systems,

Surveys & Studies
 Prototype
Recent Advances
2
© Tarek Hegazy – www.civil.uwaterloo.ca/tarek
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Infrastructure: A Challenge
3
Transportation
Marine 1%
14%
Water 2%
Sewage 3%
Electric 10%
Communication 4%
NonResidential
Buildings 40%
Oil and
Gas 21%
Other 5%
Complex Multiple-Assets on MultipleSites with Limited Repair Budget.
Infrastructure Management
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The Challenge
Limited Budget to Maintain
Safety and Operability
 Which components to repair ?
 When to repair ?
 What kind of repair ?
4
© Tarek Hegazy – www.civil.uwaterloo.ca/tarek
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Facets
Planning Horizon
Now
Excellent
When?
$
Condition
New
Condition
Assessment
Which?
Future
What?
x
Unacceptable level
time
Now
Deterioration
Prediction
© Tarek Hegazy – www.civil.uwaterloo.ca/tarek
Optional Repair
Strategies
5
6
Facets
$$$
Condition
Assessment
Visual Inspection
Time consuming,
subjective, &
costly.
Deterioration
Prediction
Decisions
Requires a lot of
historical data.
Difficult to assess
the interactions.
Improvement
Optional Repair
Strategies
Improper definition
of repair, cost, &
after-repair
improvement.
6
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Facets
Condition
Assessment
Condition
Assessment
Deterioration
Prediction
Deterioration
Model
Replace
Major
Minor
$ 5,000
Cost
Model
Repair &
Improvement
Life Cycle
Analysis
(LCCA)
Improvement
model
© Tarek Hegazy – www.civil.uwaterloo.ca/tarek
Life Cycle Analysis
& Prioritization
Prioritized
Assets
Which,
When,
What, &
How much?
9
8
Condition Assessment
1
10
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© Tarek Hegazy – www.civil.uwaterloo.ca/tarek
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Condition Assessment
Distress Analysis
Direct Rating
Deficiency
Critical
Weight
Frame Problems
w1
1
Hardware Problems wi
1
.
.
Fair
Good
(Fast but Less Accurate)
Asset Hierarchy
 Scale (0  Good & 10  Poor)
 Inspection / Data Collection
 Calculate Condition)
Severity
.
.
.
.
2
3
4
2
3
4
.
.
5
S1
5
Si
(Accurate but lacks guidance)
d

DI j 
© Tarek Hegazy – www.civil.uwaterloo.ca/tarek
W
i 1
ij
 Sij
100
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Deterioration Model
2
15
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Deterioration Model
Condition
Assessment
Deterioration
Prediction
Repair &
Improvement
Life Cycle Analysis
& Prioritization
Predictive Models:




Based on Service Life
Deterministic (Regression)
Stochastic (Markov)
Artificial Intelligence (ANN)
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Repair Model
3
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Repair Model
Condition
Assessment
Deterioration
Prediction
Repair &
Improvement
After-Repair
Condition:
Repair Cost = % of
Replacement Cost.



Light repair = 28.5%
Medium repair = 65%
Extensive repair = 100%
Seo, J. 1994
Life Cycle Analysis
& Prioritization
5, 6
7, 8
3, 4
Medium
Extensive
5, 6
Light
Medium
7, 8
-
Light
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Life Cycle Analysis
4
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Life Cycle Analysis
Project level
Variables & constraints
Network level
Variables & constraints
Integration
Planning horizon
Value of Money?
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Life Cycle Analysis
Example of a bridge case study
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Systems, Surveys & Studies
Many Computerized Tools
Municipal infrastructure asset management systems:
state-of-the-art review
Halfawy, M.; Newton, L. ; Vanier, D.
NRCC-48339
2005
4
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Systems, Surveys & Studies
Many Computerized Tools
MIMS
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Systems, Surveys & Studies
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RECAPP
2002
Select
Component
USER
INPUT of
Distress
Deficiency list
for the selected
component
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Systems, Surveys & Studies
City
Works
4
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Systems, Surveys & Studies
Synergen
4
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Interesting
Developments
Automated Condition Assessment
Optimizing the Delivery of
Large M&R Programs
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M&R Planning
Execution Planning
Infrastructure
Management
Systems
List of
Priority
Assets &
Repair
Types
Execution order?
Outsourcing?
In-house resources?
Meet Strict deadline?
Normal / Overtime?
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Execution Challenge
Site Order
Moving Time
Site Productivity
M&R
Time/Cost
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GIS Support
Site 5
Crew 1
Site 4
Repair
Activity for
Five Schools
Crew 2
Site 3
Crew 1
Site 2
Crew 2
Crew 1
Site 1
0
Site 3
1
2
3
4
5
6
Time
End
Crew 1
Site 1
Site 5
Crew 2
Site 4
Link Between the Scheduling Model
& Different Layers of GIS data
Site 2
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MR&R Delivery Options
Delivery
Approaches for
MR&R Programs
In-House
Resources
Outsourcing +
Out-Tasking
© Tarek Hegazy – www.civil.uwaterloo.ca/tarek
Combination
of All
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Example
Initial
Schedule
Two
Outsourced
sites
Deadline
not met
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Example
Deadline met at
Min. cost.
Schedule => GIS
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Benefits
 Cost-Effective delivery
 In-house vs outsourcing vs out-tasking
 Ties to Asset Management Systems
 Realistic execution to meet constraints
 Do more for less & reduce backlog
 Speedy corrective actions
© Tarek Hegazy – www.civil.uwaterloo.ca/tarek
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