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MunServNet - Component B - 1 st Expert panel 11-1 3 J ul y 2006, Chania

MunServNet - Component B - 1 st Expert panel 11-1 3 J ul y 2006, Chania. Target and policy for leakage management in Debrecen. Zoltán Karácsonyi University of Debrecen Centre for Environmental Management and Policy József Ányos Debrecen Waterworks Co. Challenges. National level

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MunServNet - Component B - 1 st Expert panel 11-1 3 J ul y 2006, Chania

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  1. MunServNet - Component B - 1st Expert panel11-13 July 2006, Chania Target and policy for leakage management in Debrecen Zoltán Karácsonyi University of Debrecen Centre for Environmental Management and Policy József Ányos Debrecen Waterworks Co.

  2. Challenges • National level • Public water service • 70% residential consumption • 30 % industrial/collective consumption • Water loss: ~19% (National Report of Water Framework Directive 2005)

  3. General overview - Debrecen • Constructive works of drinking water supply: • main water pipe • main water meter • subordinate water meter • pressure intensifier • Main water pipe • 645,3 km • diameter: 80-800 mm • material: cast iron, steel, asbestos cement, PVC, polyethylene

  4. Leakage control in Debrecen • Accessability to the network: 99,9 % • Water production cap.: 55.000 m3/day • Water network: 645,3 km • Sold water: 13,735 M m3/year • Technical loss: 3,089 M m3 /year • Loss of water: 22,4 %/year • Number of pipe breaks: 168/year • Number of main watermeters: 32 332 • Number of subordinate watermeters: 55 223 • Number of failure: 1 864/year

  5. Leakage control • Aim: reduction of water loss and selling margin (water production – selling) at the same time • Methods: • Active • Passive • Passive methods • Improvement of water measurement • Change of water meters of expired calibration • Plombing of water meters • Locating consumers not measured (illegal) • Active methods • Detailed examination of network • Quick and detailed location of failure points/sites

  6. Leakage control overview (1) • ’80s: Searching failures by sense microphones, geophones

  7. Leakage control overview (2) • ’90s: Diagnostical measuring car (measuring flows, locating failures by correlator) MICROCORR 5 – Correlator searching for failure RSP 3 Knocker – Searching tracks of non-metal wires HYDROLUX HL 2000 – Electroacustic failure seeker

  8. FM 9800 - Searching tracks of metal wiresand cables RD 312 – Metal detector MFE 90 - Searching tracks of metal wiresand cables RD 315 – Magnetic metal detector

  9. Leakage control overview (3) • Since 2000: system of noise level sensor and data storing unit • Installment plan • Installment of data collectors • Monitoring • Measurement • Automatic data collection and manipulation • Forwarding results by radiowaves (leakage data and position) • Result of measuring: failure point/site exists/not exists • Detailed location: usual way • Troubleshooting SEBA Dynatronic GPL 99

  10. Application: also in the settlements of the region (first examination has been finished in 90%)

  11. Thank you for your kind attention!

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