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ElectricalEvaluationΑRev.1ShraderEngineeringInc. <br />CityofLaPorteΑHillridgeWaterPlant <br />Introduction <br />TheCityofLaPortehasrequestedanelectricalevaluationoftheHillridgeWaterPlantat10220 <br />HillridgeRoadLaPorte,Texas77571.Thepurposeofthisevaluationistoprovideoptionsand <br />recommendationsforreplacingthepumpbuildingandelectricalequipmentservingthetwo <br />wells.Inaddition,aroughorderofmagnitudecostestimateisprovidedforeachoptionaswell <br />asrecommendationsforphasingconstructiontomeetthe/źƷǤ͸ƭbudgetaryrequirements. <br />Analysis <br />Duetothedeterioratedstateofthepumpbuildingandelectricalequipment,itis <br />recommendedthatthepumpbuilding,allelectricalequipmentinsidethepumpbuilding,and <br />theelectricalequipmentservingthewellsbereplaced.Thiswillallowthefacilitytobebrought <br />uptoCodeandcurrentsafetystandards.Theoptionslistedbelowdetailthevarioussolutions <br />toaccomplishthistask. <br />hƦƷźƚƓЊ <br />Thisoptionconsistsofconstructinganewconcretemasonryunitbuildingthatincludesa <br />controlroom,pumproomandchlorineroom.Thenewbuildingwillbeconstructedtothe <br />eastoftheexisting100HPwellsite.Thenewbuildingwillcontainallelectricalequipmentto <br />runtheboosterpumpsandtwowells.Constructionwillbesplitintothreephasesas <br />follows: <br />Phase1ΑControlRoomandWellEquipment <br />Constructductbankfromproposedcontrolroomlocationtoeachwellsite. <br />Stuboutconduitsforfuturepumproom,chlorineroom,generator,andcontrolsto <br />existinggroundstoragetank. <br />Constructcontrolroomwithprovisionsforfutureexpansion. <br />New800Aelectricalservicesizedtorunfullloadofwaterplant. <br />Installmotorcontrolcenterinsidecontrolroomwithmaincircuitbreaker,surge <br />protector,phasefailrelay,powermonitor,automatictransferswitch,solidstate <br />reducedvoltagestarters(softstarts)forwellmotors,andmotorprotectionunit <br />(Multilin). <br />Install480:120/208Vlowvoltagetransformerandpanelboard. <br />Temporarilyreroutewellcallsignalsfromexistingwellstarterstonewstarters. <br />InstallNEMA4Xstainlesssteelterminalboxesandsurgeprotectorsateachwell. <br />Demolishexistingwellstartersandservicerackat250HPwellsite. <br />2 <br /> <br />