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APPLYING GIS FUNCTIONS IN NRW REDUCTION ACTIVITIES

APPLYING GIS FUNCTIONS IN NRW REDUCTION ACTIVITIES. Ir. Zainuddin Bin Md Ghazali Chief Operating Officer Ranhill Water Services Sdn Bhd 83, Matang Building, Jalan Langkasuka, 80350 Johor Bahru, Malaysia. Tel: 607 276 2020 HP: 6019 772 6611 email : zainuddin@rws.com.my

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APPLYING GIS FUNCTIONS IN NRW REDUCTION ACTIVITIES

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  1. APPLYING GIS FUNCTIONS IN NRW REDUCTION ACTIVITIES Ir. Zainuddin Bin Md Ghazali Chief Operating Officer Ranhill Water Services Sdn Bhd 83, Matang Building, Jalan Langkasuka, 80350 Johor Bahru, Malaysia. Tel: 607 276 2020 HP: 6019 772 6611 email : zainuddin@rws.com.my Website: www.rws.com.my

  2. What is NRW? Non Revenue Water definition is quantity of water produced from treatment plant not billed to customer NRW = System Input – Water billed

  3. The formula if P = System Input , C = Billed Consumption - P C = % NRW P C P * A measuring scale for Water Supply company efficiency

  4. Infrastructure Leakage Index (ILI) • Calculation for ILI is; CARL (Current Amount Real Loses) UARL (Un-Avoidable Real Loses) CARL = physical loses includes overflow, burst, and leaks UARL = (18 x Lm + 0.8 Nc + 25 Lp) Pr Pr = Pressure. Avg retic and distr mains = 3.2 Bar. Lm = Pipe length from GIS in meter. Nc = Number of Billings connections. Lp = Private length, or avg communication pipe in meter.

  5. PHYSICAL LOSSES TARGET MATRIX

  6. Physical Loss Performance:Categories; Guide to Further Action A B C D Potential for marked improvements: Consider pressure management, better active leakage practices and better maintenance. Good: further loss reduction may be uneconomic; careful analysis cost effective improvements. Poor: Tolerable only if water is plentiful and cheap; even then intensify NRW reduction efforts. Terrible: Inefficient use of resources; NRW reduction programs imperative and priority.

  7. Why NRW is very important to any water operator? • To fully optimize usage of treated water produced by consumers • To optimize revenue • Increase operational efficiency

  8. Where do GIS functions benefit NRW Management? • In areas of: • Water Asset Registration • DMA establishment • Network Modeling • Planning & Operation

  9. Where do GIS functions benefit NRW Management? • Water Asset Registration

  10. Asset Registration : eliminate OUTDATED AND UNMAINTAINED DATA • Created once in Excel and no update after that TACIT

  11. JOHOR DIGITAL MAP & PIPELINES

  12. ASSET MEASUREMENT Source : SAJH-GIS (Apr 2013)

  13. Asset update progress over five (5) years * Source of data courtesy of SAJ Holdings Sdn Bhd

  14. GIS for Asset Registration • Single point of reporting for water assets • Avoid outdated and unmaintained data

  15. Where do GIS functions benefit NRW reduction? • DMA Establishment

  16. DMZ – BW16 GIS for DMA establishment Network Tracing to locate valves to be boundary valves for DMA

  17. DMZ polygon GIS for DMA establishment

  18. Improved DMA boundaries and data value * Source of data courtesy of SAJ Holdings Sdn Bhd

  19. DMZ Conflict Inspector (DMZ-CI) Conflict output

  20. Result – better analysis for NRW by DMA (case on zero variance in number of connections * Source of data courtesy of SAJ Holdings Sdn Bhd

  21. Result – better analysis for NRW by DMA on commercial losses * Source of data courtesy of SAJ Holdings Sdn Bhd

  22. GIS for DMA establishment • To provide scale-down NRW analysis by DMA • Improve DMA boundary and data value • Better analysis on commercial losses • Leakage percentage and pressure management

  23. Where do GIS functions benefit NRW reduction? • Network Modeling

  24. Hydraulic Modeling : tedious work in Excel and plotting in hydraulic software • Create in Excel and transfer to Model

  25. Data transfer from GIS to Hydraulic Modeling Software

  26. Laid on Google map

  27. Result: Analysis on DMA pressure survey (High Pressure)

  28. GIS for Network Modeling • Avoid redrawing of data • Data transfer from GIS to Modeling software • Model can be shown as layer-lapping with GIS map/Google map

  29. Where do GIS functions benefit NRW reduction? • Planning & Operation

  30. Burst location Burst Total Pipe burst record in GIS GIS for Planning of Asset Replacement GPS to locate burst location and record in GIS

  31. GIS for Planning of Asset Replacement • Record of Asset • Burst records • - for pipe replacement program

  32. Planned Shut Down & Trace to Affected Customers Application

  33. Record of customer affected by water disruption from billing system

  34. GIS for DMA Maintenance • Opening/closing of valve: better management on service interruption during DMZ maintenance • - ZPT • - Step test

  35. Challenges & lessons learned • Be achieved with: • High commitment from all staffs in the company – from top to bottom • Collaboration & Co-operations • Willing to improve • Rapid development environments, ease of use, product reliability, and vendor stability are among key contributors to selecting integrated platform options • Customer service/stakeholders’ interests must be the key indicator – fulfill the needs and efficient service

  36. THANK YOU

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