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- W2327181567 abstract "Transient analysis of a pump trip was conducted on a full-scale distribution system (DS) equipped with high-speed pressure transient data loggers at the outlet of the water treatment plant (WTP) and at 12 DS sites. Following the calibration of the transient model (∼16,000 nodes) with transient pressure recordings, intrusion volume computations were performed considering two intrusion pathways: leakage orifices and submerged air vacuum valves (AVVs). As expected, the estimated intrusion volumes through submerged AWs are considerably larger than those through leakage orifices. Water quality modeling was conducted in order to evaluate the spatiotemporal dispersion of the intruded water, assumed to be contaminated with Cryptosporidium oocysts. A point estimate of the maximum probability of infection was then computed at each DS node using the negative exponential model. The estimated maximum probabilities of infection were displayed on the DS map and the model assumptions are discussed. This exercise has underlined important risk gradients and the localized occurrence of very high probabilitiesof infection, suggesting that a global risk analysis might be misleading. This project is the first attempt at quantifying public health risks induced from low pressure events in a large scale system (supplying ∼400,000 people) based on actual negative pressure recordings." @default.
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- W2327181567 date "2011-12-21" @default.
- W2327181567 modified "2023-10-14" @default.
- W2327181567 title "Negative Pressure Events in Water Distribution Systems: Public Health Risk Assessment Based on Transient Analysis Outputs" @default.
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- W2327181567 doi "https://doi.org/10.1061/41203(425)45" @default.
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