3.1. aw mohammad alshafey - aqaba pilot
•
1 like•435 views
The AQUAKNIGHT project conducted a pilot study in a district metered area (DMA) of Aqaba, Jordan to evaluate methods of reducing non-revenue water. Key activities included installing valves and pressure loggers to subdivide the DMA, conducting leak detection surveys to find illegal connections and leaks, and testing meters to quantify losses. The results showed that illegal connections, leaking pipes, and under-registering meters were contributing significantly to water losses in the system. Reducing these issues could help lower non-revenue water beyond current limits.
Recommended
More Related Content
Similar to 3.1. aw mohammad alshafey - aqaba pilot
Similar to 3.1. aw mohammad alshafey - aqaba pilot (20)
More from malshafey
More from malshafey (10)
Recently uploaded
Recently uploaded (20)
3.1. aw mohammad alshafey - aqaba pilot
- 1. AQABA PILOT PROJECT Mohammad Alshafey m.shafei@aw.com.jo 2nd AQUAKNIGHT Conference “Water Loss Management in the Mediterranean Countries: the AQUAKNIGHT Project Results” 21 May 2014, Aqaba, Jordan
- 2. Aqaba Governorate NRW (%) 37% 30% 27% 28% 24% 23% 21% 22% 26% 26% 0% 5% 10% 15% 20% 25% 30% 35% 40% 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013
- 3. Being considered to have low NRW presented its own challenges: • “NRW level is already considered regionally ‘acceptable’” • “This is as low as you are going to get.” • “It’s working… Why change it?” • “It is unfeasible to go below 20% in the middle east!” • Are large financial investment required? • Should AW focus on other weaker areas besides NRW?
- 4. Main questions to be answered: • Is there an economical and technical feasibility to lower NRW beyond its current limits? • What are the amounts of real and administrative losses? • What is the intervention cost per DMA, per km, and per customer?
- 5. • The pilot area represents approximately 8% of customers, and approximately 5% of the length of mains in Aqaba city. • Pilot area was selected to represent a situation that is common in the city, and exhibit the major causes of NRW. The AQUAKNIGHT Project
- 6. The DMA • DMA lies within a larger metered pressure zone, and is supplied by gravity. • DI pipes from 1985. • PE pipes from 2007. • Valves on ductile mains are mostly buried underground. No fire hydrants. • Bursts and visible leaks are repaired in an average time of 1.5 hours upon detection. • Most detected bursts and leaks are in ¾” polyethylene house connections, and 2” polyethylene mains. Water Pipe Length( m) DI 200 (Trans) 745.0 DI 250 1,244.8 DI 200 192.0 DI 150 2,925.4 DI 100 5,092.0 PE 63 14,557.6 Total 24,756.8
- 7. • Approximately 2600 customers/meters. • Existing meters are Class B multiple jet meters. • Recent replacements are Class C multiple jet meters. • Avg. meter age is 10 years for DMA, 9 years for the city. • All customers have roof top tanks. • Illegal connections are detected regularly. • Tampering with meter is detected regularly. 0 50 100 150 200 250 1 3 5 7 9 11 13 15 17 19 21 23 25 # Meter Age The DMA
- 8. • Quantification of real vs. administrative losses. • Quantification of intervention cost per DMA, per km, and per customer. • Investigation of AMR technology. • Solving the meter accuracy problems. • Transforming the NRW management techniques currently used. • Customizing best practices to local needs. • Practically prove the theoretically calculated feasibility of aggressive NRW management. Objectives of AW
- 9. Valve Survey
- 10. • Pressure chambers were build on loop entries to produce three subzones. 43 40 30 29 Average Pressure Line Average Pressure Lowest Pressure Highest Pressure Elevation 0 2 4 6
- 11. • New valves were installed to divide the DMA into 12 sectors. These sectors will be used to evaluate step testing, and to listen for leakage on the DI mains. DMA Bulk Meter S S S S S S
- 12. • Subzone metering will satisfy the “subzone” activities, as well as providing a method for calculating and monitoring NRW for a small number of customers, and better evaluating apparent losses. Subzone Meter Subzone Meter Subzone Meter DMA Bulk Meter
- 13. Support on Best Practices • Training and consulting on NRW reduction techniques. • Water balance building and training. • Designing a water loss strategy. • Proposed Organisational Structure for NRW Management. • Inception and organization of leak detection workshop.
- 14. • A workshop was held in Aqaba for leading NRW equipment and systems providers. • AW staff were trained on using the equipment. DATE Name Company Subject Thursday 28th February Stuart Hamilton Bambos Charalambous Jawad Bhatti Hydrotec Ltd Hydrotec Ltd I2o Water Ltd Introduction Water Balance Pressure Management Pressure Control Sunday 3rd March Michael Schulze SEBA Leakage detection equipment and technologies Monday 4th March Jeremy Llewellyn Gutermann Leakage detection techniques and equipment Tuesday 5thMarch Daniel Krywyj JD7 Internal pipe inspection and leakage detection Wednesday 6th March Stuart Hamilton Bambos Charalambous Primayer Hydrotec Ltd Pilot DMA analysis Thursday 7th March Hazem Fakhouri Stuart Hamilton Bambos Charalambous HWM Hydrotec Ltd Leakage detection Present discuss data gathered and results Wednesday 28th March Philippe Girod Primayer Leakage technologies Pilot DMA analysis
- 17. •A simulated leak was produced, and the different companies (SebaKMT, Gutermann, Primayer, and Palmer) used their equipment, with AW staff, to detect it. •Results showed that Leak sound could not travel more than approximately 10 min plastic pipes. Correlation on plastic pipes was either unsuccessful or with mixed results. Direct sounding using a digital listening stick on the same connection was the best way for detection.
- 18. Test 1 – Manual Readings UFR + Old MetersManual Reading
- 19. Test 1 - AMR Readings Customer Meters Main Meter
- 20. Test 1 – Average Demand Pattern Minimum to average ratio = 0.37 0 0.5 1 1.5 2 2.5 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 13.5 14 14.5 15 15.5 16 16.5 17 17.5 18 18.5 19 19.5 20 20.5 21 21.5 22 22.5 23 23.5
- 21. • A – Old Meters. • B – Old Meters + UFR. • C – New Meters + UFR. • D – New Meters. A B C D Bulk Meter 242 527 1352 1066 Sum Residential 117.7 272.6 819.7 563.71 Estimated Illegal ue 48.4 105.4 270.4 213.2 Rsultant metering error 75.8 149.0 261.9 289.09 Using illegal use estimation (%) 31% 28% 19% 27% Test 1 – Backward Estimation
- 22. • Very high illegal use was detected. • Detection of illegal use in the field lead to better estimation of the number of cases and the uses for illegal consumptions. Test 1 – Logged use estimation
- 23. • A – Old Meters. • B – Old Meters + UFR. • C – New Meters + UFR. • D – New Meters. 51% 48% 39% 47%46% 43% 33% 42% 37% 33% 22% 32% 31% 28% 19% 27% 0% 10% 20% 30% 40% 50% 60% A B C D 0 hours per day 10 hours per day 24 hours per day Using illegal use estimation (%) Test 1 – Potential Interpretation
- 24. • Testing 37 old meters (Class B and C multi-jet) in series with Itron Aquadis+, Volumetric meters registered 23% higher than old meters. • Testing 19 new Itron meters (Class C multi-jet) in series with Itron Aquadis+, Volumetric meters registered 28% lower than multi-jet meters. 3 meters were blocked. 11% higher if blocked meters were ignored. Test 1 – Side Testing
- 26. -20% 0% 20% 40% 60% 80% 100% 120% 140% 0 5 10 15 20 25 30 Error% Age Age vs. Error Linear (Age vs. Error) Error vs. Age – little correlation
- 27. Testing the effect of UFR on roof top tank meter system. Test 2
- 28. Testing meter behaviour with pressure, with and without a UFR 0 1 2 3 4 5 6 28/11/201311:57:00ص 28/11/201302:19:00م 28/11/201304:41:00م 28/11/201307:03:00م 28/11/201309:25:00م 28/11/201311:47:00م 29/11/201302:09:00ص 29/11/201304:31:00ص 29/11/201306:53:00ص 29/11/201309:15:00ص 29/11/201311:37:00ص 29/11/201301:59:00م 29/11/201304:21:00م 29/11/201306:43:00م 29/11/201309:05:00م 29/11/201311:27:00م 30/11/201301:49:00ص 30/11/201304:11:00ص 30/11/201306:33:00ص 30/11/201308:55:00ص 30/11/201311:17:00ص 30/11/201301:39:00م 30/11/201304:01:00م 30/11/201306:23:00م 30/11/201308:45:00م 30/11/201311:07:00م 01/12/201301:29:00ص 01/12/201303:51:00ص 01/12/201306:13:00ص 01/12/201308:35:00ص 01/12/201310:57:00ص 01/12/201301:19:00م 01/12/201303:41:00م 01/12/201306:03:00م 01/12/201308:25:00م 01/12/201310:47:00م 02/12/201301:09:00ص 02/12/201303:31:00ص 02/12/201305:53:00ص 02/12/201308:15:00ص 02/12/201310:37:00ص 02/12/201312:59:00م 02/12/201303:21:00م 02/12/201305:43:00م 02/12/201308:05:00م 02/12/201310:27:00م 03/12/201312:49:00ص 03/12/201303:11:00ص 03/12/201305:33:00ص 03/12/201307:55:00ص 03/12/201310:17:00ص 03/12/201312:39:00م 03/12/201303:01:00م 03/12/201305:23:00م 03/12/201307:45:00م 03/12/201310:07:00م 04/12/201312:29:00ص 04/12/201302:51:00ص 04/12/201305:13:00ص 04/12/201307:35:00ص 04/12/201309:57:00ص Upstream Pressure Upstream Totalizer Upstream Flowrate Downstream totalizer Downstream Flowrate
- 30. Test 2 – Calculation of use pattern Minimum to average ratio = 0.36
- 32. Leak Survey results • Number of customers: ~2260 • Number of connections: ~680 • Length of pipe: 24.7 km • Leakages found: 23 (3.4% of connections, ~1/km) All of them repaired • Estimated retrieved: 12.5 m3/h at least (~20% of input) • Illegal connections found: 11 (0.5% of customers) Not all illegal connections could be detected. • Number of tilted meters: 327 (14.5% of meters) Most of them repaired • Meter error: estimated 23% ++ (37 Old meters tested against volumetric meters in series) (++ due to inactive meter existing in the actual network).
- 34. Leaks
- 35. Leak repair
- 37. Missing and tilted meters
- 39. MNF Results • Data from billing and MBF is used to estimate the bottom up leakage. 0 20000 40000 60000 80000 100000 120000 140000 160000 180000 200000 Before During After Illegal Leak Meter Error Consumers Large Cstmrs Supply LNU(at 0.36) Legal MNF
- 40. MNF Results • Data from billing and MBF is used to estimate the bottom up leakage. 0 20000 40000 60000 80000 100000 120000 140000 160000 180000 200000 Before During After Leak LNU(at 0.36) Supply MNF
- 41. MNF Results • A leak of 4 m3/h was measured using a subzone meter, and repaired before the installation of the Bulk meter. MNF Before 29.52 m3/h MNF After 20.98 m3/h Difference 8.54 m3/h Previous leak 4.00 m3/h Total 12.54 m3/h Annual Savings 109,839.89 m3 Annual Savings 43,935.96 JD Costs of survey 2300 JD
- 42. Water Balance
- 43. Water Balance
- 45. Water Balance before and after System Input Volume Authorized Consumption Billed Metered Revenue Water45% 45% Unmetered 45% 0% 45% Unbilled Metered Non-Revenue Water 0% 0% Unmetered 0% 100% Water Loss Commercial Loss Unauthorized 7% 26% Metering Error 55% 19% 55% Physical Loss 29% System Input Volume Authorized Consumption Billed Metered Revenue Water57% 57% Unmetered 57% 0% 57% Unbilled Metered Non-Revenue Water 0% 0% Unmetered 0% 100% Water Loss Commercial Loss Unauthorized 10% 35% Metering Error 43% 25% 43% Physical Loss 8% The area showed higher leakage than average. Still, reducing leakage did not affect the NRW percentage significantly due to commercial loss.
- 46. NRW Plan for 2014 and 2015 • Installing new accurate meters is a priority. • Leak detection is cost effective and successful if done correctly. • Assessing cost, benefit, and actual savings can be done with the help of DMAs. • Etc…. The most important result is knowledge and confidence. The same plan could have been written in 2010, yet the outlook and likelihood of success are completely different today.
- 47. العام20142015 الربعQ1Q2Q3Q4Q1Q2Q3Q4 الشهر123456789101112123456789101112 عالية بمواصفات جديدة بعدادات القديمة العدادات استبدال العطاء ووثائق المواصفات إعداد الجدوى دراسة إعداد العطاء طرح واالختيار العروض دراسة والتوريد التصنيع(مجموعة1) الفحص منطقة في العدادات تركيب النتائج دراسة(مجموعة1) التسرب مسح أعمال استكمال لمنطقة التسرب مسحSL3السرقات عن والتبليغ التسربات وإصالح لمنطقة التسرب مسحSL4السرقات عن والتبليغ التسربات وإصالح لمنطقة التسرب مسحNHالسرقات عن والتبليغ التسربات وإصالح لمنطقة التسرب مسحNLالسرقات عن والتبليغ التسربات وإصالح المحافظة قرى في التسرب لمسح تجربة إجراء إنشاء12DMAsالعقبة مدينة في الفاقد لمراقبة العطاء ووثائق المواصفات إعداد العطاء طرح واالختيار العروض دراسة التنفيذ النتائج ودراسة المراقبة للعدادات المستمر الفحص المصادر عدادات فحص الزبائن كبار عدادات فحص الميدان في العدادات دقة لفحص معيارية عدادات تركيب األداء معايير وتحقيق الجدوى دراسات الحكومية واالشتراكات الزبائن كبار مواقع تثبيت للفاقد المالي النموذج تحديث المناطق حسب المختلفة الفاقد أداء معايير حساب.
- 48. Thank you! • Mohammad Alshafey Strategic Planning/R&D Aqaba Water Company, W.L.L. 22 Al-Sharif Hussein Bin Ali St. P.O.Box 252, • Aqaba 77110, • Jordan • Email: m.shafei@aw.com.jo • Web: www.aw.jo