Browse > Article

Calculation of Probability of System Failure for Pipe Network with Surge Tank regarding Unsteady Flow  

Kwon, Hyuk Jae (강원대학교 토목공학과)
Lee, Cheol-Eung (강원대학교 토목공학과)
Publication Information
Journal of Korean Society of Water and Wastewater / v.23, no.3, 2009 , pp. 295-303 More about this Journal
Abstract
In the present study, a reliability analysis calculating the probability of system failure has been performed using cut set and results of numerical analysis for unsteady flow in pipe. Especially, the probability of system failure has been evaluated regarding the effect of valve closure which is a really important activity in operation of piping system. In spite of small amount of demand, it was found that fast valve closure can generate high probability of system failure. Furthermore, it was confirmed that surge tank can reduce the unsteady effects and probability of system failure in water distribution system. From the results, it was found that the unsteady flow has a significant effect on the probability of system failure Furthermore, it was able to find which pipe or cut set has high probability of system failure. So it could be used to determine which pipe or cut set has a priority of repair and replacement. Therefore, reliability analysis regarding unsteady flow has to be performed for the planning, designing, maintenance, and operation of piping system.
Keywords
Unsteady flow; Pipe network; Reliability analysis; Cut set; Surge Tank;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
1 Karney, B. W. & Mcinnis, D. (1992). 'Efficient calculation of transient flow in simple pipe networks.' Journal of Hydraulic Engineering, ASCE, 118 (7), 1014-1031   DOI
2 Kwon, H. J. (2005). 'Transient flow in water distribution system.' Ph..D. Thesis, University of Southern California, Los Angeles, CA
3 Mailhot, A., Pelletier, G., Noel, J-F., and Villeneuve, J-P. (2000). 'Modeling the evolution of the structural state of water pipe networks with brief recorded pipe break histories: Methodology and application.' Water Resources Research, Vol. 36, No. 10, pp. 3053-3062   DOI   ScienceOn
4 Watson, T. G., Christian, C. D., Mason, A. J., Smith, M. H., and Meyer, R. (2004). 'Bayesian-based pipe failure model.' Journal of Hydroinformatics, Vol. 6, No. 4, pp. 259-264
5 Kwon, H. J. (2007b). 'Analysis of Transient Flow in a Piping System.' KSCE Journal of Civil Engineering, Korean Society of Civil Engineers, Vol. 11, No. 4, pp. 209-214   DOI   ScienceOn
6 Kwon, H. J. and Lee, C. E. (2008a). 'Reliability analysis of pipe network regarding transient flow.' KSCE Journal of Civil Engineering, Korean Society of Civil Engineers, Vol. 12, No. 6, pp. 409-416   DOI   ScienceOn
7 Kwon, H. J. (2007a). 'Computer Simulations of Transient Flow in a Real City Water Distribution System.' KSCE Journal of Civil Engineering, Korean Society of Civil Engineers, Vol. 11, No. 11, pp. 43-49
8 Ang, A. and Tang, W. H. (1984). Probability Concepts in Engineering Planning and Design. John Wiley and Sons, Inc. New York
9 Kirmeyer, G., W. Richards, and C.D. Smith. (1994). An Assessment of Water Distribution Systems and Associated Research Needs. Denver, CO: AWWARF
10 Chaudhry, H. M. (1979). Applied Hydraulic Transients. Van Nostrand Reinhold, New York
11 Kwon, H. J. and Lee, C. E. (2008b). 'Reliability analysis for the probability of pipe breakage.' Journal of Korean Society of Water and Wastewater, KSWW, Vol. 22, No. 6, pp. 609-617   ScienceOn
12 Watters, G. W. (1984). Analysis and Control of Unsteady Flow in Pipe lines. Butterworths, Boston
13 Wylie, B. E. and Streeter, V. L. (1993). Fluid Transients in Systems. FEB Press, Ann Arbor, Mich
14 National Research Council Canada (1995). Water Main Breaks Data on Different Pipe Materials for 1992-1993