목표 유수율 달성을 위한 유수율 제고 전략 산정 방법론 개발 및 적용 = Development and application of methology for calculating revenue water ratio improvement strategy to achieve target revenue water ratio

다국어 초록 (Multilingual Abstract)

This study set up the revenue water ratio that could be achieved within the range of the expenses of the water distribution network maintenance project, developed an analysis methodology that could estimate the additional project quantity to achieve the target revenue water ratio of 85% and applied and verified that to S. City. This methodology allowed the distribution of the leakage quantity for each leakage component by the pipeline through the total revenue water account balance analysis and BABE approach and the redistribution into the calculated leakage quantity more accurately through a step test. In addition, the level of reduction in leakage and the quantity of the project were estimated before and after the application of four strategies for the promotion of the revenue water ratio presented by IWA, according to the leakage components by the pipeline. As a result of the application of this analysis method to S. City, it would be possible to achieve up to the revenue water ratio of 81.0%, which was 74.7% in the beginning, if the water distribution network maintenance project was promoted within the range of the project expenses, and to achieve the revenue water ratio of 85.0%, the goal of the project, it would be necessary to replace the pipeline of 22.2% of the entire pipelines in the target area. As a result of the re-estimation of the revenue water ratio achievable, applying the actual water distribution network maintenance quantity in the scope of the business with the results of this analysis, the revenue water ratio was 81.7% while the actually measured revenue water ratio was 82.3%. Thus, the reliability of this analysis method could be secured to some extent.

참고문헌 (Reference)

• 1 황진수 ; 최태호 ; 김기범 ; 구자용, "지방중소도시의 누수관리방법에 대한 효율성 평가" 대한상하수도학회 35 (35): 121-133, 2021
• 2 ME, "Statistics of waterworks" 22-, 2021
• 3 Kim, S. H., "Review of revenue water ratio (%) as a performance indicator for waterworks facility management" 30 : 27-39, 2018
• 4 KWWA, "Research for development of performance measurement indicators for local waterworks operation and management" 2015
• 5 IWA, "Performance indicators for water supply services" IWA Publishing 2012
• 6 KRIHS, "On the direction of policy toward the efficiency of local water supply" 2016
• 7 K-water, "Guide book of NRW reducing and management in water distribution system"
• 8 K-water, "Development of water loss performance indicator based on cost-benefit" 2019
• 9 Lambert, A. O., "Accounting for losses: The bursts and background concept" 8 (8): 205-214, 1994
• 10 Lambert, A. O., "A review of performance indicators for real losses from water supply systems" 48 (48): 227-237, 1999
• 11 Kwater, "A basic study for establishment of setting objective for leakage management of water pipe network" 2011