Threshold Break Rate for Pipeline Replacement in Water Distribution Systems
Publication: Journal of Water Resources Planning and Management
Volume 128, Issue 4
Abstract
A comprehensive review of pipe replacement analyses is presented, from which an economically sustainable threshold break rate for replacement of pipelines in deteriorating water distribution systems is derived that yields some of the previously available replacement criteria under weaker restrictions. Relations of equivalence are established between the threshold break rate and both the rate of occurrence of failure (ROCOF) and the hazard rate functions. These statistical functions are used to predict break rates for a system. Optimal replacement times are obtained by equating the threshold break rate and the assessed (predicted) break rate from the ROCOF and the hazard rate functions. Design charts to determine the optimal threshold break rate as a function of pipe diameter and discount rate are also given, as well as numerical examples illustrating the developed theory.
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Information & Authors
Information
Published In
Journal of Water Resources Planning and Management
Volume 128 • Issue 4 • July 2002
Pages: 271 - 279
Copyright
Copyright © 2002 American Society of Civil Engineers.
History
Received: Feb 24, 2000
Accepted: Aug 16, 2001
Published online: Jun 14, 2002
Published in print: Jul 2002
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