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Leakage Index Curve and the Longer-Term Effects of Pressure Management
Price: £100
Ref: 03/WM/08/29
ISBN: 1-84057-280-9
This project considers the various methods available of predicting both the short and long term effects of pressure management. The report concludes that there is little practical difference between the methods for the majority of conditions but some have advantages at the extremes and that there is a large variability in pressure-leakage relationships for individual zones. The main recommendation is that a linear pressure-flow relationship can be used in large zones, or where high precision of results is not a priority. There is no evidence of a relationship between pressure and mains repair frequency. Keywords: leakage management, pressure management
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The Environmental Impact of Phosphorus from the Agricultural Disposal of Sewage Sludge - Stage 3
97/SL/02/4 - ISBN: 1 84057 013 XLaboratory, lysimeter and field studies continue to show wide variability the potential bioavailability of phosphorus in sewage sludge. Under operational rates of application, losses of phosphorus in run-off from plots recei... More...
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UKWIR/EA A Unified Methodology for the Determination of Deployable Output from Water Sources - Volume 1
00/WR/18/1 - ISBN: 1 84057 198 5This joint UKWIR/ Environment Agency project examined current practices for determination of surface water and ground water deployable output (DO) and concluded that a unified approach was both desirable and feasible. However... More...
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Leakage Estimation from Night Flow Analysis
99/WM/08/21 - ISBN: 1 84057 158 6Existing methods for providing leakage estimates for reporting purposes, using data from continuously monitored areas are reviewed. Analysis concentrated on night use allowances and 15 minutes flow sampling intervals using s... More...
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The Natural Rate of Rise in Leakage
99/WM/08/22 - ISBN: 1 84057 159 4This research examines the theoretical and empirical determinants of the natural rate of rise in leakage (NRR) over time, in order to advance the development of an 'NRR Equation' which can be used to produce reliable estimate... More...
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A Manual of DMA Practice
99/WM/08/23 - ISBN: 1 84057 160 8The manual provides guidance to staff engaged in managing district meter areas (DMAs). It guides the practitioner through the stages of : 1. setting up and maintaining districts, 2 monitoring leakage, 3 se... More...
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