Detecting leaks in the district heating system of Corte city, Corsica (2013)

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Detecting leaks in the district heating system of Corte city, Corsica (2013)

Adding helium to the heat transfer fluid (water)

  • Network buried at a depth between 60 cm and 1 m constituted by two pipelines distant from 150 mm allowing the coolant to go and return from the boiler room to buildings to be warmed
  • Pipes in pre-isolated carbon steel (coated with a polyurethane foam and a PEHD shell)
  • Flow of the circulating water : 300 m3/hour – service pressure : 6,6 bar
  • Exact position of the heating network localisez thanks to the radio-detector of CFG Services
  • Inspection of 3 km of network with its antennas without any operation shutdown in urban zones
  • 9 leaks localised among which the smallest detected by increase of only 0,9 parts per million of the content in helium of gases of the ground