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Comprehensive Water Distribution System Audit <br /> <br />· ' Meters that are too large for the application and do calibration of the master meter appears to be reasonably <br />not read at Iow consumption levels straight forward, and the volumetric procedure described <br /> below will be used. <br />To determine the source of the unbilled water in the system, <br />severalimportantareasoftheutilityoperationneedtobe Flow Meter Installation <br />evaluated. Theseareasareidentifiedinthefollowingitems: TheCarrer&BurgessTeamwilivisitthemetersidentihedby <br /> City staff and evaluate the installation. The evaluation will <br />'~' An evaluation of the installation and accuracy of be conducted for the following reasons: <br />various meters installed in the City's system must be <br />performed. * To determine ifthe installation ofthe meter can have <br /> an adverse impact on the accuracy, and <br />· Investigate and estimatethe amount ofunbitled water <br />used bythe City and other customers. * To evaluate the location and installation for subsequent <br /> in situ calibration. <br />· The existing billing software should be examined to <br /> confJrmthattherearenounder-billedaccounts. The Team will documentthe conditions at each meter location <br /> by preparing a field sketch of the installation and obtaining <br />· The possible leakage in the system must be evaluated digital photographs. <br /> to determine the extent of the problem, and to ideati~, <br /> in so far as possible, the areas with most of the leaks. <br /> ~'"t ~' '/ <br />· ~' Determine the feasibility of meter replacements to ! '~ <br /> reduce the amount of unbilled water in the system. <br /> <br /> Project Approach <br /> <br />Problem Identification <br />The City of Paris produces approximately 12 to l 5 MGD of <br />water on an average day. The typical consumption for <br />residential/commercial uses is reported to be 2.6 MGD. Installation Errors <br />Therefore about 10 ro 12 MGD of water is being supplied to The most common errors Jn installing flow meters ore: <br />major customers. The first adion should be to confirm that <br />the meters for the major customers are reasonably accurate. <br /> · ' Locating the meter in a position where it does not flow <br />The City staff has a n umber of these meters that are routinely <br />calibrated as part of the normal operations; therefore, this Full. <br />portion of the project should proceed rapidly. <br /> · ' Failing to provide the upstream and downstream <br />Additionally, the master meter's (the 42-inch meter) conditions necessary to minimize turbulence in the <br />calibration needs to be confirmed, since that is the basis for meter. <br />much of the data that have been gathered. Checking <br /> <br />Carter Burgess <br /> <br /> <br />