Transcript Request Management

The Murrumbidgee Irrigation Area (MIA)
Infrastructure Modernisation Planning
 Characterised infrastructure into zones
 Cost of operating and maintaining infrastructure
 Revenue generated by customer charges
 Volume of average annual water losses
 Ability to meet all necessary contract and legal obligations
 Agronomic potential of soils
 Environment value of
surrounding area
 Land use changes/land use
zones
Infrastructure Modernisation
 Improve system efficiencies
 Meet changing customer
needs
 Reduce asset ownership costs
 Generate water savings
 Reduce infrastructure
footprint
Infrastructure Modernisation Strategy
 Replace lined channels with
gravity pipes
 Replace Dethridge Wheels
with compliant flow meters
 Automate flow control
structures
 Support on-farm water
efficiency improvements
 Application for Australian
Government funding under
the Water for the Future
initiative
Alliance Delivery Model
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Used successfully on infrastructure projects
Enables early commencement of the modernisation program
Provides for constructor input during the design phases
Strong likelihood of achieving outstanding performance
Ensures high standards of work
Provides opportunities for local
firms
 Maximises likelihood of
mitigating time/cost overruns
 Maximises the potential for
staff development
Lake Wyangan System
Background
 Closed system within a catchment of 7,000 ha
 Supplying around 200 properties
 Ageing concrete-lined gravity supply channels
 Constrained system
limited to 220 ML/day
 Mix of hobby blocks,
horticulture and large area
 Social amenity provided
by Lake Wyangan
Lake Wyangan Modernisation
Objectives
 Replace ageing infrastructure that is at risk of failure
 Enable delivery of contracted levels of service
 Minimise the impact on water levels and water quality and
the overall environmental health of the Lake Wyangan
catchment
 Realise the estimated water savings
target for the project
Planning Options
Options considered
 Upgrade the existing supply system
– Focus on renewal of ageing assets over water savings
 Reconfigure the existing system
– Focus on providing a secondary supply system for some areas
to address capacity constraints
 Build new assets to alleviate requirement to upgrade some
capacity constraints
– Focus on creating new asset over renewal of existing assets
Lake Wyangan Modernisation
Scope
 Reline and widen 15.8km of ageing concrete-lined channel
– Replace 122,000 sqm of concrete lining
 Replace open channels and ageing pipelines with 13.8km
gravity pipelines
 Replace Dethridge wheels with flow meters compliant with
Australian Standard AS4747
 Install channel automation of flow
control structures
 Install remote monitoring of meters
Technical Risk Reduction
Shotcrete Lining Trials
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Earthwork remediation and compaction
Concrete mix
Shotcrete application
Panel jointing materials
Shotcrete finish
Construction program
 Construction will commence in May 2013
 All works to be completed by November 2014
 Pipeline and channel works have been designed to minimise
supply disruptions.
 Customers notified in advance of periods when the supply
system will be unavailable
 Priority for construction is:
– Supply and installation of gravity pipe lines
– Channel re-lining and earthworks
– Meter replacements
– Channel automation
Construction Program
Customer Engagement
Building
relationships
Planning and
design
Construction
Testing/
Commissioning
Timing
Oct 2011– ongoing
Oct 2011 – May 2013
May 2013 –Nov 2014
Nov 2013/Nov 2014
Key steps
 Stakeholder
forums
 Planning options
 Construction:
 Acceptance
testing
 Individual face-toface meetings
 Survey and detailed
design
 Outlet designs
– Civil
– Mechanical
– Electrical
 New system
begins operation
Lake Wyangan Modernisation
Challenges
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Forecasting future customer behaviour and intentions
Managing customer expectations
Developing and adopting new design rules
Establishing new business processes
Anticipating changes to operating
practices
 Compressed construction window
 Delivering a successful project for
MI, customers and the region
Acknowledgement
The Lake Wyangan Modernisation
Project received funding of $50 million
from the Australian Government’s
Water for the Future initiative through
the Private Irrigation Infrastructure
Operators Program in NSW
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