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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

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.

challenges
Challenges
  • National level
    • Public water service
      • 70% residential consumption
      • 30 % industrial/collective consumption
    • Water loss: ~19% (National Report of Water Framework Directive 2005)
general overview debrecen
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
slide4

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
slide5

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
slide6

Leakage control overview (1)

  • ’80s: Searching failures by sense microphones, geophones
slide7

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

slide8

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

slide9

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

slide10
Application: also in the settlements of the region (first examination has been finished in 90%)
slide12

Thank you for your

kind attention!

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