Technical assistance for project preparation in the water sector

Implementation of potable water & sewage measuring campaigns in the 7 towns of Veliko Tarnovo, Kurdzhali, Pernik, Vidin, Plovdiv, Dobrich and Yambol:​

• Preparation & planning of all measurement campaigns in each of the town.​
• Establishment of methodology for execution of the measuring campaigns.​
• Provision of the following measuring equipment: 38 insertion flow meters, 7 ultrasonic flow meters, 19 pressure loggers, 1 level logger, 1 geophone, 1 correlator, 38 doppler height/velocity flow meters, 7 rain gauges, 7 samplers and 7 ampere metric clamps.​
• Construction of chambers for installation of measuring equipment​
• Implementation of the measuring campaigns in the 7 towns, during a total period of 12 weeks, by installation of:
  • For potable water network: 98 insertion flow meters, 49 ultrasonic flow meters, 79 pressure gauges, 2 level gauges
  • For sewage network: 53 doppler flow meters, 12 rain gauges, 3 ampere metric clamps
• Sampling campaigns: 75 samples were taken in potable network and 118 in sewage network
• Leak detection campaign carried out in pilot zones in each of the 7 cities representing a total of 47km of network investigated with 71 leaks detected

Submission of 14 full detailed measuring campaign reports with the following comprehensive interpretation of data collected:​

• For potable water network:
  • Characteristics of the measuring campaign
  • Analysis of the flow, pressure and level information by measuring points and sectors
  • Analysis of the pilot zone measurement and leak detection
  • Synthesis on overall state of potable water network
  • Maps and curves
• For sewage network:​
  • Characteristics of the measuring campaign
  • Results of flow measurements under dry and rainy weather conditions for each measuring point and by catchment basins
  • Synthesis on overall state of sewage network
  • Maps and curves