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Study on the characteristics of night flow components for leakage management in district metered area  

Koo, Ja-Yong (서울시립대학교 환경공학부)
Jang, Kwang-Ho (한국종합기술 엔지니어링)
Kim, Min-Cheol (서울시립대학교 환경공학부)
Publication Information
Journal of Korean Society of Water and Wastewater / v.23, no.6, 2009 , pp. 871-879 More about this Journal
Abstract
The Korea has high population density, so the precipitation per capita is only one tenth to world average. The water resource in Korea is insufficient. But the leakage in the water distribution system is about 25%, and it is lower than other countries where water utilities are managed well. The pipelines' management also is getting worse because the leakage in the pipelines lower the ground density surrounding pipes. So, managing the leakage in the water distribution system is very important in the view of increasing the water resources and doing the efficient management of the pipeline system. Accordingly this study aimed to conduct a cause-analysis with scientific approaches considering key local factor related to water loss of distribution system and derive better performance indicators which are able to evaluate the real state of water loss management reasonably. Also this research aimed to develop a methodology capable of judging condition of infrastructure of water distribution system.
Keywords
PI(performance indicator); minimum night flow; unavoidable night flow; leakage management;
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