Post on 25-Feb-2016
description
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GIS for Water Maximizing the Benefits of GIS
Susan Ancel - Director Water Distribution and Transmission
EPCOR Water Services Inc.
Geospatial World Forum – Preconference Seminar
May 2013, Rotterdam
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Presentation Overview
■ EPCOR Overview
■ History of GIS – EPCOR Water
■ GIS Strategic Plan Principles
■ Infrastructure Renewal
■ Water Consumption Analysis – Rate Design
■ Transmission Main Renewal Prioritization
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EPCOR Background
Wholly-owned subsidiaries build, own and operate electrical transmission and distribution networks, water and wastewater treatment facilities and infrastructure
Selected as Alberta’s Best Overall Workplace for companies with more than 750 employees
Headquartered in Edmonton, Alberta, Canada2700 Employees in TotalMore than 1000 Employees in Water
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EPCOR Background
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EPCOR Water – Edmonton Statistics
Waterlines = 3,700 kms Hydrants = 18,000 Valves = 54,000 Depth of Bury = 2.8meters
Population Served = 1 million Service Connections = 240,000 Average Demand = 340 MLD Maximum Demand = 550 MLD
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GIS History – EPCOR Water1978 1980 1990 19951985 2000 2005 2008
GeoEdmonton Alliance Established
2013
3rd GenerationDatabase CentricIntegrates GIS & WMS
1St GenerationCAD Based AM/FM
Renewal Candidate Selection Tool Built
ADAPT Tool Built
Network Field Link (Webtools)
All Mains Hydraulic Model Built
Field Computers Deployed
2nd GenerationCAD & Database Based, Analysis ToolsSome WMS Tools
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GIS Strategic Plan Principles■ GIS Technology will Improve Water Service’s
Efficiency or Effectiveness■ Accurate Information should be Available to the
Users when they need it, where they need it and in a format that meets their needs
• Data Stewardship is a key enabler • Desired outcomes are not just automation but also business process
improvement• Success requires a combination of appropriate technology and trained users
with a focus on supporting the decision process vs. creation of maps
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Overall System Architecture
WALRUSOracle Spatial
DataRecording
Tools
HydraulicModelsSynergee
WorkManagementSystem - IVARA
ThematicMappingMapInfo
Speciality Queries And Reports
CAD Tools
Microstation
Input
Network Field LinkeSpatial
address, AppNOs
Input
GeoEdmontonAlliance DataUtilities, parcels etc
Input
Customer InformationSystem
Service lines
Input
GeoEdmontonAlliance Data
WALRUS – Water And Land Related Utility System
Users can access same information via four interfacesdepending on their need – Microstation, MapInfo, IVARA or NFL
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Infrastructure Program Drivers
REMAINING LENGTH AND BREAKSCAST IRON WATER MAINS
0100200300400500600700800900
100011001200130014001500160017001800
1952
1954
1956
1958
1960
1962
1964
1966
1968
1970
1972
1974
1976
1978
1980
1982
1984
1986
1988
1990
1992
1994
1996
1998
2000
2002
2004
2006
YEARS
LEN
GTH
(km
) and
AN
NU
AL
BR
EAK
S
KILOMETRES OF CAST IRON PIPE
BREAKS
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Infrastructure Renewal Program History1985 1990 1995 2000 2005 Present
Distribution Cathodic Protection Program
Reactive Water Main Renewal Program
Proactive Renewal Program
Water Main Lining Program
AC/PVC Valve Program
All Mains Hydraulic Modeling
Neighbourhood Improvement Programs
2010
Accelerated Program
Current Annual Capital BudgetFor Water Main Programs Approximately $40Million/year
Total spent since 1985 - $500 Million
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RPV – Candidate SelectionReactive \ Cathodic Protection \ Accelerated \ Neighbourhood Programs
Candidates Selected Based on RPV
Reactive Renewal – RPV>5
Cathodic Protection – RPV 0.5 <> 1.0
Neighbourhood Program – RPV > 3 and other Utility work planned in same alignment
Accelerated Program – Single Break in last five years and City Paving project planned
RPV = Replacement Priority ValueTotal Number of Main Breaks over 5 years Divided byTotal Length of Pipe Between Valves
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Water Main Lining \ Valve & Hydrant Replacements
Water Main LiningGIS to plan construction • number of hydrants out of services• road access impacted • number of customers on
temporary water
Valve & Hydrant• Program to renew valves corroding on the
non-metallic pipes and replace obsolete hydrants
• Renewal to occur prior to other planned construction or maintenance work
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Hydraulic Modeling Requires robust GIS
Critical aspect of selecting candidates for renewal
Also used to assess impact during construction due to components being out of service
Evaluates delivery pressures and fire fighting capacities
Also used for Energy usage analysis to determine inefficiencies in pumping and distribution of water
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Water Consumption Analysis – Rates Design
Summer Winter
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Current Initiatives – Transmission Main Renewal Prioritization
■ Reviewing All Transmission Activities:■ Rehabilitation■ Cathodic protection■ Replacement
■ Assessing Hydraulic Needs for Pipes considering changing network configuration
■ Criticality Assessments – Using Genetic Algorithms■ Risk Ranking of Each Stretch of Transmission Main –
(based on materials, road types, customer impacts, hydraulic constraints)
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Thank you for your time
Questions?