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Title: ACTIVE LEAKAGE CONTROL IN LOW PRESSURE AREAS – IT CAN BE DONE

Author: S. Hamilton

Year: 2009

Publisher: European Water Resources Association (EWRA)

Description:

This paper highlights the problems that can occur when working in a low pressure water distribution system. This then poses the question. In countries that traditionally have high pressure within the distribution what is considered ‘low pressure’? Australia for instance low pressure may mean 30m of water pressure, USA 20m, UK 15m and Central Europe 10m. This paper shows why low pressure in a distribution system can cause problems when conducting ALC and a case study where ALC was successfully completed in a busy city with an average water
pressure of 6m. Although this is deemed to be low pressure there are many cities in the world that has an average pressure of 3m and lower, in these cities it may be considered that the distribution main is not always pressurised and therefore acoustic leakage detection cannot be done.