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Drinking Water Engineering and Science An interactive open-access journal
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https://doi.org/10.5194/dwesd-5-351-2012
© Author(s) 2012. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/dwesd-5-351-2012
© Author(s) 2012. This work is distributed under
the Creative Commons Attribution 3.0 License.

Submitted as:   09 Jul 2012

Submitted as:   | 09 Jul 2012

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This discussion paper is a preprint. It has been under review for the journal Drinking Water Engineering and Science (DWES). The revised manuscript was not accepted.

Reliability of water distribution networks due to pumps failure: comparison of VSP and SSP application

N. Mehzad1, M. Tabesh2, S. S. Hashemi3, and B. Ataee Kia3 N. Mehzad et al.
  • 1School of Civil Engineering, University of Tehran, P.O. Box 11155-4563, Tehran, Iran
  • 2Centre of Excellence for Engineering and Management of Infrastructures, School of Civil Engineering, University of Tehran, P.O. Box 11155-4563, Tehran, Iran
  • 3School of Civil Engineering, College of Engineering, University of Tehran, P.O. Box 11155-4563, Tehran, Iran

Abstract. Reliability is an important indicator to ensure the operation of Water Distribution Networks (WDNs). To optimize the operation of WDN, it is necessary to incorporate the reliability of active components (such as pumps and tanks) besides the reliability of pipes. In this research, a concept is suggested to calculate the reliability of WDNs' pumping stations. A computer code is provided in Visual Basic and is linked to EPANET2.0. To evaluate the proposed methodology a real WDN near the city of Tehran is considered. According to the obtained results, it is concluded that by increasing the demand of the WDN during a day, the reliability of pumps decrease. Therefore, it seems that decision-making is necessary if high demand hours are considered, in order to increase the reliability of the system. On the other hand, it is observed in this research that using variable speed pumps not only reduces the energy cost of the network, but also the reliability of the pumping stations with variable speed pumps is higher than single speed pumps. Therefore, using VSP is highly recommended in WDNs.

N. Mehzad et al.
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AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Interactive discussion
Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement
N. Mehzad et al.
N. Mehzad et al.
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