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NRW Program Negeri Sembilan Experienced ( Hatimuda Sendirian Berhad ) 031109

NRW Program Negeri Sembilan Experienced ( Hatimuda Sendirian Berhad ) 031109. Non Revenue Water is The Difference Between Volume of System Input and Billed Authorized Consumption. - Malaysian Context - Why High NRW Levels?. Not Difficult - Boring Subject (Never Mind Attitude)

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NRW Program Negeri Sembilan Experienced ( Hatimuda Sendirian Berhad ) 031109

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  1. NRW ProgramNegeri Sembilan Experienced(HatimudaSendirianBerhad)031109

  2. Non Revenue Water is The Difference Between Volume of System Input and Billed Authorized Consumption

  3. - Malaysian Context -Why High NRW Levels? • Not Difficult - Boring Subject (Never Mind Attitude) • No Complains – Consumers Have Sufficient Supply • No Incentives and Recognition • Money Spend Not for the Root of the Problem (Rehabilitation Projects Only) • Insufficient Allocation • Unsustainable and non Committal (No Follow Through After Project) • Ineffective Monitoring System • False NRW Calculations and Data Interpretations • Non Committal on Commercial Losses • MOST IMPORTANT: Repetitions on Wrong Doings During New Water Supply Project Implementations and Substandard Materials and Poor Quality Workmanship

  4. Key Conditions for Sustainable NRW Program • Pressure to develop NRW reduction strategy to show effectiveness in managing water loss management. • Commitment from key decision maker within utility. • Adequate technical understanding • Organization and Information System • (requires long term NRW strategy to reach an economic level and constantly monitored to maintained the level)

  5. KEY BENEFITS OF NRW PROGRAM • Improving management of water supply distribution system • Improving Customer Services & Revenue Collection • Improving asset management system for maintaining, operating and upgrading the network components • Reduce Operational Cost & Unscheduled Interruption • Implementation of Water Audit • Development of long term pipe replacement programme • Deferment in Capital Expenditure

  6. NRW! • Not Technically Difficult but • Complex • ii. Reflects Efficiency • iii. Effects Financial • Iv. Requires Commitment Because What we cant measure we cant manage Requires A diagnostic approach followed by the implementations of practicable and achievable solution to Reduce and Sustain NRW levels. Through Holistic NRW

  7. Holistic NRW Difference Between Actual Volume of System Input and Detailed Volume Measurement of Billed Authorized Consumption Through i. Detailed Measurement & Monitoring of High Quality Data ii. Use of Latest Technology in IT & Communication iii. Traditional NRW Approach iv. MNF Monitoring by SCADA as tool to prioritize ALC

  8. Negeri Sembilan • 6646 kilometer persegi • Penduduk 925,000 • Anggaran Panjang Paip : 6500km • 330,000 meter pengguna - 12 % pengguna komersial- 38% penggunaan • 25 Loji Rawatan Air - Kapasiti Rekabentuk : 730 mld - ( Dari 0.1 mld hingga 30.4 mld) • 468 Kolam dan Tangki Air simpanan • Anggaran NRW 2005= 53%

  9. Perbandingan % NRW

  10. Negeri SembilanWater Supply Demand

  11. Negeri SembilanNRW Projects • Holistic NRW Seremban • RM 14 million • Completed Feb. 2008 • Holistic NRW Seremban Service & Maintenance Contract • RM 10.3 million • April 2009 – Mac 2011 • Holistic NRW Kuala Pilah / Jempol • RM 25 million • Feb 2008 – Feb 2010 • Holistic NRW Port Dickson • RM 15.3 million • April 2009 – Mac 2011 • Seremban NRW Program • RM 43 million • July 2007 – June 2010

  12. PROJEK HOLISTIK NRWSeremban Kawasan Senawang meliputi: Mukim Ampangan dan sebahagian Mukim Bandar, Rasah dan Rantau

  13. SEREMBAN HOLISTIC NRW PILOT PROGRAM (Project Overview) • Project Cost • Original at RM 10.5 million (USD 3.0m) for 40,000 acc. • Danish Govt. DANIDA Grant of RM 1.2 m • Budget Addition of RM 4.5 m for 62,000 acc. • Payment Terms • RM 2.5m Tied to NRW Reduction • Balance Based on Bill of Quantities • Leak Repairs at Actual Cost plus Management Fee • 5% Performance Bond – Penalty if 15% NRW Reduction not achieved

  14. Seremban Holistic NRW Pilot ProjectGuarantees15% NRW Reduction Source of supply 2 No 900 mm 55 DMZ’s 40 DMZ’s Modeled 58.5 km.sq 0.8% 11 Fixed Time & 9 Time Modulated PMA’s 64,385 metered Consumers 19% 748.1 km pipes 11% 3456 leaks detected And repaired

  15. SEREMBAN HOLISTIC NRW SCOPE OF WORKS • GIS PIPE REGISTRATION • DESIGN & ESTABLISHMENT OF DMZ • BASELINE NRW CALCULATIONS & SETTING TARGETS • PRESSURE MANAGEMENT CONTROL • SCADA & AMR • LEAK DETECTION / RESERVOIR OVERFLOW & REPAIRS • CONSUMER METER MANAGEMENT & REPLACEMENT • ESTABLISHMENT OF CONTINUOUS NRW MONITORING MECHANISM. • ESTABLIMENT OF PIPE REPLACEMENT PROGRAM

  16. 1. GIS Pipe Registration

  17. Cadastral Map / Satelite Image Cadastral Map (UPI of lots used as ID ) Satellite Image (as back ground map for reference)

  18. Verification & Digitizing of Pipelines Black: Pilot Area Red: Hardcopy Green: AutoCAD Blue: Field

  19. PIPE REGISTRATION

  20. Satelite Image

  21. Satelite Image Overlay With Cadastral Map

  22. Digitizing of Pipelines & Atributes

  23. Geo-coding (Geo referencing) of Consumer Accounts

  24. 2. DMA Design

  25. Zero Pressure Test (ZPT) • External pressure loggers • No reaction at the pressure, which means they are supplied from another source • Internal pressure loggers • Pressure drop at the same time at at P1 and P2

  26. Model Building and Calibration for DMZ

  27. 3. BASELINE CALCULATION • Top Down NRW measurement based on actual volume of system input and detailed volume measurement of billed authorized consumption. • For the purpose of establishing the present NRW level in order to put up an agreed NRW reduction target.

  28. 4. Pressure ManagementReal Loss Management Strategy for Background Losses

  29. Box HQ 5. SCADA – (web hosting) -For reduction of time & cost of operation and real time data availability-

  30. SCADA & Data Hosting

  31. MNF Monitoring -Prioritizing and Localizing- Repair works Abnormal flow High MNF detected MNF back to normal

  32. 6. Leak Detection & Repairs(Find and Fix) 1.ALC Monitoring Prioritizing Localizing Locating Pinpointing 2. Speed & Quality Repair 3.Good & Quality Material Monitoring

  33. Registration of Leak Locations

  34. RESERVOIR OVERFLOW • Contributes a significant % to overall NRW due to: • Over pumping (pumping fed reservoirs) • Faulty altitude / float valves (gravity fed reservoirs)

  35. Overcome By: 1.Control of pumping operations 2.Maintenance of altitude valves or float valves (but scheduled valve maintenance inefficient and ineffective i.e.. too early or too late.) 3.Reliable and cost effective monitoring system with minimal maintenance Battery powered devices GPRS & SMS communication Web-based monitoring with SMS alert

  36. 7. Consumer Meter Management • Customer Meter Inaccuracy • Meter changing program • More accurate meters at low flow • Installation procedure • Unauthorized Consumption • Enforcements • Meter Reading Errors • Minimize human errors • AMR • Data Handling and Accounting Errors • Enhancement of CIBS softwares and hardwares

  37. 8. NRW Reduction & Monitoring Email Alarm Fast Detection Fast Repair

  38. Seremban Inflow & Metered Consumption

  39. Seremban Billed Consumption (m3/day) Hue water distribution management training

  40. Seremban NRW % Development

  41. Monthly Water Saved With October 2006 as Baseline Reference

  42. Accumulated Water Saved during Contract Period

  43. Payback Period @ RM1.18 / cu.m • RM saved during project period = RM3,325,985 • RM saved per month after project = RM 642,240/month • Repair work and monitoring cost per month = RM 370,000/month • Project Cost = RM 14,000,000.00 • Payback Period= (14,000,000 – 3,325,985) / (642,240-370,000) = 39.2 months

  44. Water Balance ( % )

  45. ILI Comparison

  46. CadanganMasaPanjang NRWNegeri Sembilan. • Pengawalan berterusan zon kawalan selepas projek siap dilaksanakan. • Meningkatkan jumlah & kecekapan kakitangan bahagian NRW SAINS • Meningkatkan sistem aduan dan pembaikan kebocoran. • Melaksanakan program NRW untuk seluruh Negeri Sembilan bagi mencapai NRW 15% menjelang tahun 2020 seperti yang disasar oleh Kerajaan Pusat. • Penekanan kapada kualiti kerja dan bahan didalam projek projek bekalan air baru

  47. TERIMA KASIH

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