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Water 2016, 8(9), 395; doi:10.3390/w8090395

Failure Analysis of a Water Supply Pumping Pipeline System

Instituto de Ingeniería, Department of Hydraulic Engineering, Universidad Nacional Autónoma de México, Cd. Universitaria, C.P. 04510 Mexico City, Mexico
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Academic Editor: Andreas N. Angelakis
Received: 1 August 2016 / Revised: 6 September 2016 / Accepted: 6 September 2016 / Published: 12 September 2016
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Abstract

This paper describes the most important results of a theoretical, experimental and in situ investigation developed in connection with a water supply pumping pipeline failure. This incident occurred after power failure of the pumping system that caused the burst of a prestressed concrete cylinder pipe (PCCP). Subsequently, numerous hydraulic transient simulations for different scenarios and various air pockets combinations were carried out in order to fully validate the diagnostic. As a result, it was determined that small air pocket volumes located along the pipeline profile were recognized as the direct cause of the PCCP rupture. Further, a detail survey of the pipeline was performed using a combination of non-destructive technologies in order to determine if immediate intervention was required to replace PCC pipes. In addition, a hydraulic model was employed to analyze the behavior of air pockets located at high points of the pipeline. View Full-Text
Keywords: air pocket; air valve; pumping pipeline; PCCP failure; fluid transients; non-destructive inspection air pocket; air valve; pumping pipeline; PCCP failure; fluid transients; non-destructive inspection
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Pozos-Estrada, O.; Sánchez-Huerta, A.; Breña-Naranjo, J.A.; Pedrozo-Acuña, A. Failure Analysis of a Water Supply Pumping Pipeline System. Water 2016, 8, 395.

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