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1、Thecurrentbuildingseveralproblemsinelectricaldesign1IntroductionIsaleadinginfraStructureEngineeringdesign,designdocumentsarethemainbasisfortheconstruction,designqualityistodeterminethequalityoftheprojectthefirstpart.Myprojectqualityaccidentstatisticsshowthatfromthed
2、esignoftheprojectqualityaccidentcausesaccountedfor40.1%;constructioncausesaccountedfor29.3%;otherreasons(suchasequipmentandmaterialsquality,etc.)causedbyaccountingfor30.6%.Thisshowstheimplementationoftheprojectqualitycontrolisthekeytothedesignqualitycontrol.Electric
3、alengineeringisnoexception.2affectthequalityoftheprojectelectricaldesignofseveralbuildingsQualifiedarchitecturaldesignshouldmeettherequirementsofsevenqualitycharacteristics,namelyfunctionality,security,economy,credibility,canbeimplemented,adaptabilityandtimeliness.D
4、esignunitsthroughthedesignofthisassessmentshouldbequalifiedtodelivertheconstructiondesigndocuments.Infactmanyofthedeliveryofconstructiondesigndocumentsexist,orthelackofqualitycharacteristicsdeviatefromtherequirementsdefects.Theimpactonthequalityofelectricalengineeri
5、ngdesignproblemsareprimarilymanifestedinthesecurity,reliability(includingtheavailability,reliability,maintainability,etc.)andcanbeimplementedofmissingordeviatefrom.Thefollowingcommentonafewofthemostcommonaspectswerediscussed.2.1Designinbreachofordeviationfromtheprov
6、isionsofdesignspecifications,safety,credibilitywithrespecttonon-implementationofthedesignspecificationsarequitecommonForexample,beforeaCityHallSquareGarden(includingthesquaregreengardenlighting,lawnlightingandsoundandlightFountainSquareCenter)projectdiscretionaryele
7、ctricalconstructiondrawingssubmittedtothefollowingproblems:theabsenceofelectricalprotectiveearthingandequipotentialbondingdesign;wronguseofTN-Clow-voltagedistributionsystem;fountainfailuretouseproperprotectiongraderequirementsofelectricalequipmentandcables.Thisdesig
8、niscompletelycontrarytothenormsprescribedsafetyrequirements,accordingtothedrawingswillremainaserioussecurityrisk.PriortoAugust1999,Qingdao
