Impact of Water Demand Parameters on the Reliability of Municipal Storage Tanks
Publication: Journal of Water Resources Planning and Management
Volume 138, Issue 5
Abstract
Municipal storage tanks are normally sized according to inherently conservative design guidelines. An alternative way to determine the required size of a tank, on the basis of a stochastic analysis of the system, was proposed in a previous study, in which it was recommended that tanks should be sized for a minimum reliability of one failure in 10 years at the most critical time of the year, typically under seasonal peak demand conditions. In this study, the same method is used to investigate the impact of different user demand parameters on tank reliability. It was concluded that the supply ratio, defined as the ratio of the source capacity to the average demand in the week considered, is the most important demand-related factor affecting tank reliability. It is shown that the reliability of tanks varies greatly throughout the year, and it is recommended that municipalities do everything possible to ensure that their system runs smoothly over the seasonal peak demand period. Several other important demand factors affecting tank reliability are also identified. It is concluded that the optimal combination of source capacity and tank size should be determined on the basis of economic factors, and that it is likely to be system specific.
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References
Alvisi, S., Franchini, M., and Marinelli, A. (2003). “A stochastic model for representing drinking water demand at residential level.” Water Resour. Manage., 17(3), 197–222.
Alvisi, S., Franchini, M., and Marinelli, A. (2007). “A short-term, pattern-based model for water-demand forecasting.” J. Hydroinf., 9(1), 39–50.
Aly, A. H., and Wanakule, N. (2004). “Short-term forecasting for urban water consumption.” J. Water Resour. Plann. Manage., 130(5), 405–410.
Barnes, D., Bliss, P. J., Gould, B. W., and Valentine, H. R. (1986). Water and wastewater engineering systems, Longman Scientific and Technical, Harlow, UK.
Great Lakes and Upper Mississippi River Board of State Public Health and Environmental Managers (GLUMRB). (1992). Recommended standards for water works, GLUMRB, Albany, NY.
Homwongs, C., Sastri, T., and Foster, J. W. III. (1994). “Adaptive forecasting of hourly municipal water consumption.” J. Water Resour. Plann. Manage., 120(6), 888–905.
Kwietniewski, M., and Roman, M. (1997). “Establishing performance criteria of water supply systems reliability.” Aqua, 46(3), 181–184.
Nel, D., and Haarhoff, J. (1996). “Sizing municipal water storage tanks with Monte Carlo simulation.” Aqua, 45(4), 203–212.
Rossman, L. (2000). “EPANET users manual.”, Environmental Protection Agency, Risk Reduction Engineering Laboratory, Cincinnati.
van Zyl, J. E., Borthwick, J., and Hardy, A. (2003). “OOTEN: An object-oriented programmers toolkit for EPANET.” CCWI and WATERSAVE Int. Conf. (Supplementary Proc.), Imperial College, London.
van Zyl, J. E., Piller, O., and le Gat, Y. (2008). “Sizing municipal storage tanks based on reliability criteria.” J. Water Resour. Plann. Manage., 134(6), 548–555.
Walski, T. M. (2000). “Hydraulic design of water distribution storage tanks.” Chapter 10, Water distribution systems handbook, Mays, L. W., ed., McGraw-Hill Professional, New York, 10.1–10.20.
Xu, C., Goulter, I., and Tickle, K. S. (1998). “Probabilistic hydraulic models for assessing capacity reliability of aging water distribution infrastructure.” 3rd Int. Symp. on Stormwater Management, Institute of Engineers, Adelaide, Australia, 165–170.
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Information
Published In
Journal of Water Resources Planning and Management
Volume 138 • Issue 5 • September 2012
Pages: 553 - 561
Copyright
© 2012 American Society of Civil Engineers.
History
Received: Aug 27, 2009
Accepted: Oct 6, 2011
Published online: Oct 8, 2011
Published in print: Sep 1, 2012
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