Browse > Article
http://dx.doi.org/10.3741/JKWRA.2009.42.6.505

Evaluation of the Reliability Improvement of a Water Distribution System by Changing Pipe  

Jun, Hwan-Don (School of Civil Engrg., Seoul National University of Technology)
Kim, Seok-Hyun (Institute of Construction Technology, HYUNDAI Engineering & Construction Co.,Ltd.)
Yoo, Do-Guen (School of Civil, Environmental and Architectural Engrg., Korea Univ.)
Kim, Joong-Hoon (School of Civil, Environmental and Architectural Engrg., Korea Univ.)
Publication Information
Journal of Korea Water Resources Association / v.42, no.6, 2009 , pp. 505-511 More about this Journal
Abstract
When replacing deteriorated pipes, it is important to select pipe diameters of new pipes for improving the long-term reliability of a water distribution system. However, as the use of larger diameter pipes brings cost increase, it is required to evaluate the improvement of the reliability by the use of larger diameter pipes. In this study, we propose a methodology to evaluate the improvement of the reliability by the use of different pipe diameters. For this purpose, we rely on the segment-based minimum cutset method with the success mode approach to evaluate the reliability of a water distribution system and determine which pipes and their diameters will be replaced to improve the reliability using GA, After the suggested method is applied to a real water distribution system, the optimized pipe diameters produces higher reliability of the system than the current ones with the same construction cost. However, compared to the increase rate of the construction cost, the improvement of the reliability is not significant. Thus, in addition to the use the different pipe diameters, the structural modification or adding new valves to the system is necessary to improve the reliability efficiently.
Keywords
Water Distribution System; Reliability Assessment; GA; Pipe Diameter;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Goulter, I.C and Coals, A.V.(1986). 'Quantitative Approaches to Reliability Assessment in Pipe Networks', Journal of Transportation Engieering, Vol. 112, No. 3, pp. 287-301   DOI
2 Jun, H.D. (2005). Strategic Valve Locations in a Water Distribution System. Ph.D. dissertation, Virginia Polytechnic and State University, VA, USA
3 Su, Y.C., Mays, L.W., Duan, N. and Lansey, K.E. (1987). 'Reliability based optimization model for water distribution systems.' Journal of Hydraulic Engineering, ASCE, Vol. 114, No. 12, pp. 1539-1556   DOI   ScienceOn
4 Tung, Y.K. (1985). 'Evaluation of Water Distribution Network Reliability', Hydraulics and Hydrology in the Small Computer Age 1985, ASCE, pp. 359-364
5 Wagner, J.M., Shamir, U., Marks, D.H. (1988). 'Water Distribution Reliability: Simulation Methods' Journal of Water Resources Planning and Management, Vol. 114, No. 3, pp. 276-294   DOI   ScienceOn
6 Xu, C. and Goulter, I.C. (1998). 'Probability Model for Water Distribution Reliability' Journal of Water Resources Planning and Management, Vol. 124, No. 4, pp. 218-228   DOI   ScienceOn
7 Mays, L.W. (2006). 'Water Resources Sustainability', McGraw-Hill Professional, New York, NY
8 Walski, T.M. (1993). 'Water distribution valve topology for reliability analysis.' Reliability engineering & system safety, Vol. 42, No. 1, pp. 21-27   DOI   ScienceOn
9 전환돈, 박재일, 백천우, 김중훈 (2007). '상수관망의 신뢰도 산정을 위한 Segment 기반의 Minimum Cutset방법' 한국수자원학회논문집, 한국수자원학회, 제40권, 제9호, pp. 745-742   과학기술학회마을   DOI   ScienceOn
10 Mays, L.W. (1996). 'Review of reliability analysis of water distribution systems.' Stochastic hydraulics '96, K. K. Tickle et al., eds., Balkema, Rotterdam, The Netherlands, pp. 53-62
11 Bao, Y. and Mays, L.W., (1990). 'Model for Water Distribution System Reliabiliyt' Journal of Hydraulic Engineering, Vol. 116, No. 9, pp. 1119-1137   DOI