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OSLO FIGHTS WATER LOSSES WITH A NEW LEAKAGE MANAGEMENT SYSTEM
- 1. OSLO FIGHTS WATER LOSSES A NEW STATE-OF-THE- ART LEAKAGE MANAGEMENT SYSTEM John Stasig Mørk Regional Director Asia jstm@niras.dk
- 2. Presenter John Stasig Mørk has over 30 years of professional experience from work in multiple Asian countries in various technical, business development and general management positions in the water and environmental sectors. He is a graduate of chemical engineering from the Technical University of Denmark and was assigned Regional Director Asia of NIRAS A/S in 2021. He is currently in charge of NIRAS private / public sectors business. John Stasig Mørk Regional Director, Asia jstm@niras.dk
- 4. Oslo Water Facts • App. 700.000 inhabitants • NRW level at around 35% - 50% in many areas • Strategy for the ongoing 5-year NRW Masterplan to reduce NRW to 25% in Oslo. • Implementation of a Water Network Management System for optimization of planning and design as well as monitoring. • Hydraulic modelling, pressure management • Support system for leakage detection and reduction activities 4
- 5. WATER LOSS IN A GLOBAL PERSPECTIVE 5 Source: IBNET (database.ib-net.org) & SWAN (www.swan-forum.com)
- 6. ONE SOLUTION - COMBINING TECHNOLOGIES Economy GIS Asset Manageme nt Smart Meter MIS CIS Water Sample Hydraulic Model Pump Valve SCADA Noise Logger The LEAKman concept provides a state of the art NRW Management system that: • Integrates all operational systems • Provides a dynamic overview of the state and performance of the operation • Transform the water supply system to a Smart Water Network • Offers well proven technologies for pressure management and leakage control
- 7. WATER SCARCITY 7 Denmark Norway Neither Denmark nor Norway have water scarcity, so why are we looking into reducing NRW?
- 8. 8 OSLO CHALLENGES 1/4/2023 • 35-50% NRW and increasing lack of investments for rehabilitation • Highly elevated area • Population growth • Limited capacity at treatment plants – new plant is now required • No individual metering • No cultural reduction as water is ”free” – running from mountains • No electrical cost – hydro power is ”free” • No DMA’s and no NRW KPI, so no tool to prioritize • Standard offline hydraulic model without DMA – only for planning purpose • Noise logger teams using standard schedules
- 9. Hydraulic model +50 DMA’s created during project 9 The hydraulic model was built based on GIS and estimated Per Unit Consumption. DMAs were planned based on modelling results.
- 10. District Metering Areas Dividing the distribution network into manageable areas Lavtrykk FT1 Ljan langs mosseveien (7K) 80 Østensjø (7D) 178 Nordstrand (7G) 178 Høytrykk PT1 Lavtrykk FT1 PT1 VP12 Lambertseter (7F) 236 VP07 Brannfjel (7R) 250 Skullerudskogeni (7V) 205 RK152 FT3 Øyene (7J) 80 TV1 RK126 RK125 RK160 RK164 Ljan (7H) 120 Bekkelagsterrassen RK135 RK157 RK129 RK137 RK136 RK133 RK132 RK161 Prinsdal (7M) 178 RK139 Holmliaveien RK138 Holmlia (7N) 140 VP13 Klemetsrud (7O) 236 RK163 RK148? Søndre Dal (7L) 200 RK143 Mot 7L RK144 Meklenborg (7P) 236 Bjørndal (7Q) 250 VP06 RK147 RK146 Bekkelagsveien Vest (7J) 100 Bekkelagsveien Øst (7G) 135 Langs Enebakkveien 178 FT2 FT2 PT2 RK 143 Mot 7D MK 100 MK 101 MK 109 MK 102 MK 103 MK 104 10 Network Topology was transferred into networks diagrams to secure DMA sections and operations were as expected. Network Diagram
- 11. Very limited metered consumption Less than 10% of demand in Oslo is metered 11 Each DMA zone flow determines the user profile based on Per Unit Consumption.
- 12. Management Information System IWA KPIs plus additional based on LEAKman HOMIS - a Holistic Management Information System – was installed to provide online access to key performance indicators for all DMAs created. HOMIS was configured in 3 hierarchical levels, and e.g. facilitates access to automated water balance calculations and reports for any area on daily, weekly or monthly basis.
- 13. How to solve the multiple Interface Complexity Learnings from a real world implementation • Need for standardized interfaces and communication protocols to minimize configuration works and system maintenance. • Prevent redundant data systems that are non-synchronized. 13 Noise Loggers SCADA Hydraulic Model Management Information System Customer Information System GIS Monitoring Asset Management Smart Meters
- 14. Water losses traced by district Overall districts can be compared. 14
- 15. Water losses traced by DMA Drill down into DMA’s 15
- 16. Performance Indicators IWA Best Practice implemented plus add-ons 16 IWA PI PI Water Resource indicators 4 Personnel indicators 26 Physical indicators 15 Operational indicators 44 Quality of Service indicators 34 Economical and Financial indicators 47 Total 170 Combining the IWA best practice with LEAKman developed PIs / KPIs such as DMA Average Pressure and noise logger status supports the leakage team in prioritizing their efforts.
- 17. Analysis using KPI’s Leak potential analysis 17 If i.e. the Minimum Night Flow raises an alarm the DMA can easily be investigated for other KPI’s to ensure the sanity of the alarm or reject the alarm as false. Included in the analysis is beside SCADA data also data from the online Hydraulic Modelling System (HMS) IWA: Non Revenue Water LEAKman : Absolute MNF HMS : Simulated Average Pressure
- 18. Online HMS The Digital Twin of a network • In the online Hydraulic modelling System all relevant data for taking the right decision are available including hydraulic and quality results for all DMA’s • The Digital Twin is in addition also used for both planning and contingency operations to understand how the service is affected by changes to operation. 18
- 19. A DMA HMS data for a DMA 19 For each DMA the real time HMS generates continously zone results.
- 20. Checking pressures Measured vs calculated in the HMS • Pressure trends can be investigated if an alarm is raised. • Sudden changes to profiles indicate something has happened which must be investigated 20
- 21. Checking ongoing work Ruling out other causes. • Failing meters or strange pressure profiles may be caused by ongoing maintenance works which can be displayed in the MIS and HMS 21
- 22. Noise loggers in the MIS and HMS Decision making using multiple data sources • For further support and better and fast leak detection Oslo is now testing permanent noise loggers. • Noise logger alarms and battery level issues alarms in the MIS and HMS and displays the state. • The loggers are also used to priortize the potential leak alarms from the DMA’s 22
- 23. Overall Oslo has now a Smart Water Network Management System Or a Digital Twin of their distribution network. Combining data and functions: • Planning • Design • Operate • Monitor • Control • Improve • Strategy 23
- 24. The Evolution of ICT Systems SWAN - Smart Water Network Forum When reaching level 4 the need for integration between ICT Systems is required ! 24
- 25. • Real-time Hydraulic Modelling • Intelligent Pumps • Intelligent Valves • Smart Metering • Noise Loggers LEAKman Technologies 25 • Holistic Management Information System (HOMIS) • Online Benchmarking • Based on IWA & AWWA Best Practices!
- 27. LEAKman PROCESS OVERVIEW Phase 1 NRW master plan Network & asset registration Leakage detection Speed & quality of repairs Phase 2 Hydraulic modeling Instrumentation Data collection Online monitoring & reporting Phase 3 Pressure management Active leakage control Water balance reporting Training & education Phase 4 Pipeline management & rehabilitation KPI monitoring & reporting Performance management Evaluation & new targets NRW Level > 30% 15 – 25% 10 - 15% < 10%
- 28. Goals achieved for Oslo until now: • Creation of +50 DMAs – and more to come • Connection various Infrastructure Communication Systems and combining data to give access to MIS and HMS • Getting a holistic overview of DMA KPI’s • Reduce pressures in pressure zones (Pilot successfully tested) • Evaluate test of permanent noise loggers 28
- 29. Next Steps for Oslo: • Test and install smart meters at customers • Finalize DMA sectioning • Understand and prioritize by using Holistic Management System and the Online Hydraulic Modelling System • Look into strategic rehabilitation of infrastructure 29
- 30. Take aways from the Oslo experience: • Know your data • Have an action plan for reducing NRW • Rehabilitation / renewal using history • Sufficient investment and frequent evaluation • Think long term – CAPEX vs OPEX • Skilled, trained, qualified and empowered personnel (capacity building) • Big data is coming – use the data and do it smart • Holistic approach combines knowledge and decisions 30
- 31. Why focus on leakage management?
- 32. We strive to move towards an enhanced sustainable future
Editor's Notes
- By using data and holistic view on the utility.
- We cover a wide spectrum both professionally and geographically. We have close to 2,200 employees in 51 offices in 27 countries. We have 7,000 ongoing projects in 108 countries. Our DNA ties us together across national borders, sectors and professional expertise.
- 2 water sources + new to be finished in 2028 Produced
- The Danish NRW level is on average 7% even though we have + 100 years old pipelines. Only surpassed by Singapore mainly due to new infrastructure.
- What do you get? One State-of-the-art leakage management solution Seamless and generic interfaces Optimized value of each individual system when combined Pipes, valves, pumps, smart meters, sensors, simulation models, management information systems (MIS) etc. The idea behind the LEAKman initiative is to make all components of the utility and the distribution network operate as an integrated system. This allows the utility to manage assets, production, operation, leakage, energy consumption, pressure, revenue and finance, making it profitable and helping you achieve a single, integrated and sustainable system.
- Neither Denmark nor Norway have water scarcity, so why are we looking into reducing NRW? Denmark’s water supply is almost 100% based on groundwater. In the 1980’ties the total abstraction was critical, and in some areas threatening the water resources. Several initiatives were introduced to reduce abstraction and mitigate future crisis.
- DMA creation using HMS
- The HOMIS system collects data from various data sources and presents grapically KPI trends based on the IWA best practise and our own experience from the LEAKman project executed with Danish utilities and manufactorers. Water balances and reports are easily accesible as well as the options to analyze and compare KPIs within or across DMAs in order to prioritize efforts. The utility management can with HOMIS weekly or monthly follow the progress and follow up with the relevant teams and departments.
- Tested in Copenhagen – implemented in Oslo. Founded by NIRAS – supported by:
- The LEAKman projekt Product of nine Danish Partners who has formed a consortium To make the best state-of-the art leakage management solution. A solution that integrates excisting products and services in combination with the goal to stop water losses – or at least reduce water losses in the world. We believe that Denmark – and the nine partners - has the know-how and technologies to do so. Supported by: The Danish Ministry of Environment and Food. Danish Eco-Innovation Program Timeline: Four years - 2016 to 2019 Budget: 43 mill. DKK.
- The elements contribute to the total reduction of water consumption Hence, it is not only technology, but also policies and public awareness. Hence holistic approach II (first one defined through LEAKman loop)
- In many ways, most of the 7,000 ongoing projects NIRAS runs mirror one or more of the 17 sustainable goals set by the UN in 2015 – also called the SDGs (Sustainable Development Goals). The 17 SDGs set an ambitious agenda for the entire world. The goals can only be achieved if governments, NGOs and the private sector work closely together. At NIRAS we are proud of the contribution we make in our projects, and we have the ambition to do more. Our mission is to deliver sustainable solutions to our customers, and in 2017 we integrated the SDGs in our forward strategy. In every sector we ask ourselves whether we can introduce new services so that, together with clients, we can contribute to the development goals. NIRAS was founded on the ambition to improve living conditions and prosperity in Greenland, and over the years we have delivered clean water to millions of people worldwide. Through our commitment to development projects, we strive to fight poverty and improve local living conditions. We have designed hospitals during the last 100 years and contributed to an improvement of the health sector, and we also implement projects within education and gender equality. Our services are aimed at protecting the environment; from district heating to solar energy and offshore wind energy, we strive to make energy production more sustainable. By designing railways, roads and ports, we create mobility and cohesion – always with the ambition to achieve the most sustainable solution.