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- W2214277675 abstract "A municipal water distribution system is a network of underground pipes, usually mirroring the city street network, that connects water supply sources such as reservoirs and water towers with demand points such as residential homes, industrial sites and fire hydrants. These systems are extremely expensive to install, with costs running in the tens of millions of dollars. Several optimization models and algorithms have been developed to generate a least cost construction plan along with optimal flows and energy heads for a given network configuration and demand pattern. However, in reality, such models need to examine replacement and expansion decisions associated with an existing distribution network, rather than generate a new design from scratch. Moreover, several input parameters require to be determined via a pipe reliability and cost analysis, that in turn is dependent on the usage of the system as determined by the output of this model. Accordingly, we propose in this paper a pipe reliability and cost submodel that uses statistical methods to predict pipe breaks and hence to estimate future maintenance costs. This in turn determines annualized costs and optimal economic lives, thereby facilitating replacement decisions for relatively expensive-to-maintain or undercapacitated pipes. This model is then integrated with the pipe network optimization submodel in an overall design approach that uses a feedback loop to reprocess the information that is generated by each model over a number of stages, until a stable design is attained. The proposed approach hence provides a holistic framework for designing reliable water distribution systems. In particular, it identifies a nonconvex optimization subproblem that global optimizers can focus on solving within this framework." @default.
- W2214277675 created "2016-06-24" @default.
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- W2214277675 date "1996-01-01" @default.
- W2214277675 modified "2023-09-26" @default.
- W2214277675 title "A Pipe Reliability and Cost Model for an Integrated Approach Toward Designing Water Distribution Systems" @default.
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- W2214277675 doi "https://doi.org/10.1007/978-1-4757-5331-8_11" @default.
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