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Understanding failure rates in cast iron pipes using temporal stratification


Silinis, P and Franks, SW, Understanding failure rates in cast iron pipes using temporal stratification, Urban Water, 4, (1) pp. 1-7. ISSN 1573-062X (2007) [Refereed Article]

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Copyright 2007 Taylor and Francis

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DOI: doi:10.1080/15730620601145832


The need for proactive replacement schedules in the management of water supply infrastructure is highlighted by the ever-increasing cost of reactive repairs. Proactive replacement schedules require models of asset performance, and, in turn, these models require appropriate stratifications of the data in order to produce subgroups that are expected to behave uniformly over time. This paper outlines a new approach to determine relevant temporal stratifications through an examination of historical performance. This represents a novel alternative to current practice where stratification regimes are identified using a priori knowledge of criteria deemed relevant. A key advantage of using the actual break histories to identify appropriate stratifications lies in the ability to identify changes in behaviour that may not be reflected in a priori criteria. In an example using Hunter Water Corporation break data a significant change is discovered and found not to correlate with previously hypothesised partition criteria. A possible cause for the change in behaviour is suggested.

Item Details

Item Type:Refereed Article
Keywords:infrastructure pipe failiure water supply
Research Division:Engineering
Research Group:Environmental engineering
Research Field:Environmentally sustainable engineering
Objective Division:Environmental Management
Objective Group:Other environmental management
Objective Field:Other environmental management not elsewhere classified
UTAS Author:Franks, SW (Professor Stewart Franks)
ID Code:86421
Year Published:2007
Web of Science® Times Cited:2
Deposited By:Engineering
Deposited On:2013-09-14
Last Modified:2014-04-11
Downloads:2 View Download Statistics

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