20180722智慧水务资料包06漏损控制DMA指导手册

DRAFTVersion1DMAManagementGuidanceNotesTheseguidancenoteshavebeenwrittenbytheDMATeamoftheWaterLossTaskForce.TheWaterLossTaskForcewassetupattheIWA“WaterLossManagent–APracticalApproach”SpecialityConferenceinCyprusin2002.AtthatconferencetheproductionoftheseguidancenoteswasalsoproposedinordertomeettheneedforinformationonbestpracticeforDMAManagement.Themainauthorswere:JohnMorrison.AssociateConsultant-HyderConsultingLtd(MorrisonTechnicalSupport),Penrhos,FforddMaelogRhosneigr,AngleseyLL645QEUKemail:[e-mail][phone]StephenTooms.HyderConsultingLtd,AstonBusinessVillage,RockyLane,Birmingham,B65RQ,UK,email:[e-mail],tel:[phone]DewiRogers,DewiSrl,ViadeiCeraioli,15–06080,Colombella(Pg),Italia.Email:[e-mail]:[phone]AcknowledgementsTheDMATeamwouldliketoacknowledgethehelpandsupportofothermembersoftheIWAWaterLossTaskForce,whohavemademanyconstructivecommentsonthecontentandlayoutoftheGuidanceNotes,providedcontentintheformofpicturesandtextonspecificsubjects,providedthecasestudiesincludedhereasappendicesandactedasproofreaders.TheproductionofthisdocumenthasbeensponsoredbyHyderConsultingplc.Theauthors,publisherandsponsorofthispublicationmakenorepresentation,expressorimplied,withregardtotheaccuracyoftheinformationcontainedinthisbookandcannotacceptresponsibilityorliabilityforerrorsoromissionsthatmaybemade.TheGuidancewillbepostedonthewebsiteinaDraftformuntilthe31stDecember2007.FollowingthisdateallcommentsreceivedwillbeevaluatedandtheNoteswillbeamendedaccordinglyandissuedinthefinalformPageiDMAGuidanceNotes22/06/078:1010Contents1Foreword........................................................................................12Introduction...................................................................................32.1Purpose........................................................................................................................32.2Readership...................................................................................................................32.3DefinitionofDMAmanagement...................................................................................32.4ManagementofDMAs..................................................................................................32.5ItemscoveredbytheGuidanceNotes.........................................................................43PhilosophyofLeakageControlbyDMAmanagement.............53.1Introduction...................................................................................................................53.2Controlofleakage–whyuseDMAs?..........................................................................53.3TheoryofDMAmanagement.......................................................................................63.4Theoryofcomponentleakage......................................................................................83.5Intermittentsupply......................................................................................................103.6Effectofpressure.......................................................................................................114SchemeDesign...........................................................................134.1Introduction.................................................................................................................134.2DesignofSectors.......................................................................................................145DMADesign.................................................................................165.1Introduction.................................................................................................................165.2DMAdesigncriteria....................................................................................................165.3DMAsizingandEconomics........................................................................................175.4Waterqualityconsiderations......................................................................................185.5DMAplanning.............................................................................................................195.6DMAtesting................................................................................................................205.7Meterselection...........................................................................................................226DMAEstablishment....................................................................246.1Proving.......................................................................................................................246.2Management..............................................................................................................246.3DataRequirementforEstablishingBackgroundandNightUse.................................256.4MeasuringMinimumNightFlow.................................................................................256.5Calculat