Water System Reliability—Balance of Cost and Riskby John P. Velon, Harza Engineering Co, Chicago, IL, USA,
Abstract: Reliability of water distribution systems to perform adequately during stress situations is dependent both on operation/maintenance preparedness as well as the limitations of the physical network. A distribution network, which may reliably provide a good level of service during a period of peak demands, may be vulnerable to situations when components of the system (mains, pumps, etc) are inoperable. Such situations are often overlooked in network design. The paper presents a procedure for identifying the vulnerability of networks to such situations, quantifying the costs of improvements, and evaluating the risks of not making the improvements.
Subject Headings: System reliability | Water supply systems | Risk management | Disaster preparedness | Stress distribution | Freight transportation | Pumps | Economic factors
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