- Title
- Framework for forensic investigation of associations between operational states and pipe failures in water distribution systems
- Creator
- Williams, Gareth S.; Kuczera, George
- Relation
- Journal of Water Resources Planning and Management Vol. 142, Issue 3
- Publisher Link
- http://dx.doi.org/10.1061/(ASCE)WR.1943-5452.0000623
- Publisher
- American Society of Civil Engineers
- Resource Type
- journal article
- Date
- 2016
- Description
- Water distribution systems throughout the world are deteriorating in part due to corrosion of cast iron pipes. Developing a deeper understanding of the operational association with failure may lead to operational improvements extending asset life. Operations engineers can be expected to develop credible theories of pipe failure based on their experience dealing with failures in the field. However, these failure theories can be more rigorously tested by a systemwide investigation of a large number of pipe failures. A forensic framework was developed to investigate how system operations are associated with large-diameter trunk-main failures. The framework utilizes a pipe failure database and historical supervisory control and data acquisition (SCADA) data to analyze trunk-main failures. Using the framework, about 141 largediameter (≥300 mm) trunk-main failures were investigated in the Lake Zone in Newcastle, Australia. A predominant system failure mode called pump offpeak (POP) was identified that accounted for approximately 38% of the failures. POP was characterized by an increasing static pressure in low demand periods with limited pressure relief from downstream reservoirs.
- Subject
- water distribution systems; pipelines; failure investigations; water pressure
- Identifier
- http://hdl.handle.net/1959.13/1347214
- Identifier
- uon:29997
- Identifier
- ISSN:0733-9496
- Language
- eng
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