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Presented by
© Copyr i gh t 2013 OSIso f t , LLC.
Leveraging the
PI System in
Water Loss
Control
Carl Yates, M.A.Sc., P.Eng.
General Manager
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© Copyr i gh t 2013 OSIso f t , LLC. 2
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September 16, 2013
OSIsoft Users Conference 2013
Paris, France
Leveraging the PI System in Water Loss Control
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History of Halifax Water
4
• Halifax Water was originally formed as
the Public Service Commission of
Halifax in 1945.
• Municipal Amalgamation in 1996
merged three water utilities to form
Halifax Regional Water Commission.
• In 2007, Halifax Regional Municipality transferred its wastewater and
stormwater assets to HRWC to form Halifax Water.
• As a result, Halifax Water is the first regulated water, wastewater
and stormwater utility in Canada.
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Water Assets
5
• 2 large water treatment plants
• 6 community plants (small systems)
• 17 water pumping stations
• 16 water reservoirs
• 1,600 km of water mains
• 70 District Metered Areas (DMAs)
• 8,000 hydrants
• 83,000 water service connections
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Wastewater Assets
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• 7 large wastewater treatment facilities
• 8 community plants (small systems)
• 175 wastewater pumping stations
• 1,400 km of wastewater sewers
• 75 CSO’s
So how do we monitor and
control all of this equipment?
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HW SCADA
• HW’s RF based SCADA system is used to monitor and control all
treatment facilities and 365+ remote sites
• HW’s PI System is the repository for process data from all HW
SCADA systems
• Single Server: PI 2010
• 5000 Tag system
• 10 PI Interfaces (OPC)
• PI ProcessBook, PI DataLink and PI WebParts
• Archives going back to 2002
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• The PI System has enabled HW to implement key programs to
improve efficiency and system operations
• Although there were several, water loss control was the first
initiative where the PI System was the centre piece
• Following the 1996 amalgamation, began looking at best practices
for all business processes
• Water loss control became lead priority as a result of a new water
treatment plant constructed in Dartmouth [a shame to continue to
waste expensive water!]
Water Loss Control Challenge
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Water Loss Control Challenge
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• Began looking internationally for best practices in water loss control
• Found the methodologies promoted by the IWA to be the best
practice; included methods and strategies to measure and reduce
losses
• After completing the IWA water audit, we found we were not doing
as well as we thought.
• A key tactic which supports the IWA methodology is the creation of
District Metered Areas (DMAs) [leak awareness to minimize runtime]
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• Fortunately, Halifax was well suited for DMA development
• Developing DMA’s required adding instrumentation to existing
zones and establishing new zones with system reconfiguration and
additional instrumentation
Water Loss Control Challenge
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DMA Installations East Region
www.halifaxwater.ca
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24” Transit Time
Flow Meter
Transit Time
Flow Meter
East Region Total Pipe
Length 576 KM
409 KM of Pipe
125 KM of Pipe
42 KM Of Pipe
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HW DMA Map
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• The challenge then was how to manage and get value from all this
DMA data considering the former municipalities did not have
SCADA systems which could support the program
• This is how the PI System became the centre piece for water loss
control
Challenge
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System Overview
Repeaters
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Remote Sites
Central
SCADA
Surfline Data
West SCADA
Surfline
Data
East SCADA
Surfline Data
WTP SCADA
VTS/Web Data
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Solution – PI Installed
PI Server
LAN/WAN LAN/WAN
Surfline(s) VTS WTP PLC(s)
Remote
Stations
Notification
Repeater Remote
Stations
PI Interface
Node(s)
Gateway LAN/WAN DH+
PDA
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PI ProcessBook PI DataLink PI WebParts
LAN/WAN
PI Interface
Node(s)
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Water Loss Control
• The data was now accessible to those who needed it
• Water loss control was now in the hands of management [a new perspective]
• The first tool developed for management was the automated “White
Boards” developed using PI DataLink and posted on our Intranet
site
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Water Loss Control …. Support Operations Staff
Identified Leakage Best Achieved
* Information posted automatically to HRWC Intranet
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PI ProcessBook DMA Overview
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Eastern Passage DMA
www.halifaxwater.ca
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Eastern Passage Water Break
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700 gpm Unreported Leak
Total Run Time 9 Hours
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Managing leakage with the PI System
• With the PI System, DMA flows over long periods are now available
to identify gradual increases in night flows and examine the
effectiveness of the leak detection program
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www.halifaxwater.ca
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2006 Minimum Night
Flow 70 m3/hr
2011 Minimum Night
Flow 60 m3/hr
Mt. Edward East 24”
Mt. Edward East
24”
Managing leakage with the PI System
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Managing water accountability with the PI System
Accounting for all water usage is also important in managing your
water loss control program….
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Benefits
So how did we do after installing the PI System and
implementing the program? [Central, East, West]
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Benefits
Tangible
• System Inputs reduced from 168 MLD in 2000 to 131 MLD in 2012
• Direct annual savings of $600,000 in recovered water
• Additional value of reducing negative effects to the environment and
restoring system capacities
Intangible
• More eyes on the PI System means more staff with knowledge of
system operations
• Enthusiasm for succeeding with other projects (I&I)
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Unexpected Benefits…. Customer Partnerships
Large customer meters monitored Monitoring fee charged for early
detection of leakage
Port Authority 24 day graph
40 m3/hr burst 10 day run
time
Spring through fall, cruise
ships take on water from
Halifax Port Authority
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Customer Partnership
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• Give them a taste, they eat the whole PI!
• Wastewater collection I&I Challenge
• CCME regulations, Overflow reporting challenge
• PI Notifications
• PI AF
• PI Coresight
Future Steps PI System wastewater expansion
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Key Points to Take Home
• A small PI System can yield big results!
• There is huge value in bringing process data from all sources
into a single environment
• The more people with access to data, the more value you will
get
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Questions or
Comments?
Graham MacDonald, Superintendent
(902) 869-4338
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© Copyr i gh t 2013 OSIso f t , LLC.
Carl Yates
General Manager
Halifax Water
[902] 490-4840
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© Copyr i gh t 2013 OSIso f t , LLC.
Please don’t forget to……
32
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© Copyr i gh t 2013 OSIso f t , LLC.