BS EN 12255-12-2024.docx

Wastewatertreatmentp1.antsPart12:Contro1.andautomationbsi.BSEN1225542:2024BREsHSTANDARDNationa1.forewordThisBritishStandardistheUKimp1.ementationofEN1225512:2024.ItSUPerSedeSBSEN1.2255-12*2003,whichiswithdrawn.TheUKparticipationinitspreparationwasentrustedtoTechnica1.CommitteeB/505/40,WaStewaterTreatmentP1.ants>50PT.A?IjaVofOrganizfttom)ttfcprOTenngfonthiscommitteecanbeobtainedon-49Contractua1.and1.ega1.considerationsThispub1.icationhasbeenpreparedingoodfaith,howevernoimp1.ied)bemade,andnoUndcrtakingiiabi1.ityisW四国岫监加WrtW½陶W视四网36P网相照战陶IbCreasonab1.enessofthispubfication.1.1.andanysuchresponsibi1.ityandFiiM1.itybiiexpOffeayrtjw1.iefhedtoahdfa1.t<fceusfd11rtbfcdbythe1.aw.recipient'sownrisk.Thetoitsisofthisconsiderrspect11icpjentuseadviscdi)ubjication.scekingprpfcssiana1.guidancewithhrspun1.cafjonISnotnrenecoconstituteacontract.Oserifare和nHhk如61树ctentw0晔mit>aD24Pub1.ishedbyBSIStandards1.imited2024掰U璐桓期9175295Comp1.iancewithaBritishStandardcannotconferimmunityfrom1.ega1.ob1.igations.ThisBritishStandardwaspub1.ishedundertheauthorityoftheStandardsPo1.icyandStrategjrCommitteeon31March2024.Anendmentscorrigendaissuedsincepub1.icationEN1225512255'12:2024March2024EUROPEANSTANDARDNormeeuropeenneEuropaischenormICS13.060.30SupersedesEN1225S-12z2003Eng1.ishVersionWastewatertreatmentp1.ants-Part12:Contro1.andautomationStationsd'epurationPartie12:RuIntionetKUimnbgenTci1.12:SteueninundAutamntisieningUUtomatisationThisEuropeanSundardwasapprovedbyCENon29Januaiy2024.CENmembersareboundtocomp1.ywiththeCEN/CENE1.ECInterna1.Regu1.ationswhichstipu1.atetheconditionsforgivingthisEuropeanStandardthestatusofanationa1.standardwithoutanya1.teration.Up*to>date1.istsandbib1.iographica1.referencesconcerningsuchnationa1.standardsmaybeobtainedonapp1.icationtotheCENCENE1.ECManagementCentreortoanyCENmember.ThisEuropeanStandardexistsinthreeofficia1.versions(Eng1.ish.French,German),AversioninanyOthcr1.angudgcmadebytrans1.ationundertheresponsibi1.ityofaCENmemberintoitsownIanguagcandnotifiedtotheCENCENE1.ECManagementCentrehasthesamestatusastheofficia1.versions.CENmembersarethenationa1.standardsbodiesofAustria,<7ium.Bu1.garia.CroatiaCyprus.CzechRePUb1.iaDenmark,Estonia.Fin1.and,France.Gennany,Greece.Hungry,Icehnd.Ire1.and,Ita1.y.1.utvi»v1.ithuania1.iixcmbourjvMa1.ta.Nethcr1.Ands,Norway,Po1.and,P<rt,Repuh1.icofNorthMacedonia.Rnanu.Serbia,S1.ovakia.S1.ovenia.Spnin1.Sweden,Switzer1.and,TiirkiyeandUnitedKingdom.EUROPEAN00MMIREFORS7ANDARDI77IONCOMrTEEUROYENOENORMA1.ISATIONEuropaischeskomiteefornormungRefNo.EN1225S12:2024ECENCENEI.ECManagementCentre:RuedeIaScience23.B-1040BraxsehG2024CENA1.1.rightsofexp1.oitationinanyformandbyan>meansreservedWDridW1.dCforCENnaHou1.Members.ContentsEuropeanforewordIntroductionScope.NormativereferencesTermsanddefinitionsISvinbo1sanda1.jbrevatons7Instruments.Genera1.requirementsInstrumentationandcontro1.requirements345,s.InstrumentationsystemsProcesscontro1.andautomation66.16.26.3Designandimp1.ementationInitia1.designDetai1.eddesignCommissioning,testandtakeover.11Annex闻仃解界NmUve)GiridaneefotHhese1.eetionof4"triHnenadot>reonre4endatHmto3Genera1.Instrumentation1.ifeCyC1.e一.2.1A.2.2A.2.3A24Stage1-InstrumentationpurposeStage2InstrumentationspecificationStage3-Insta1.1.ationA.2.5A.2.6A.3A.3.1Stage4-OperationandmaintenanceStage5Reviewandrep1.acementExamp1.esofbasicinstrumentationandcontro1.systems(rd1<A.3.2Simp1.ere1.ay-basedcontro1.systems>16A.3.3Programmab1.e1.ogiccontro1.1.er(P1.C)basedinstrumentationandcontro1.systems.17A.3.4A.4.1AdVanCec1.PrCOntr。I.The1.eve1.Ofinstmmentationfcontro1.andautomationinwastewatersystems.OVerVieWA.4.2A.4.3Determinationofappropriateinstrumentandcontro1.systemsfortrick1.ingreactorp1.ants19Determinationofappropriateinstrumentandcontro1.systemsforactivateds1.udgeP1.antSmmm)Bib1.iographyMMMMtaMMMMEuropeanforewordThisdocument(EN12255-12:2024)hasbeenpreparedbyTechnica1.CommitteeCEN/TC165"Wastewaterengincenng,rthesecretariatofwhichishe1.dbyDIN.ThisEuropeanStandardsha1.1.begiventhestatusofanationa1.standard,eitherbypub1.icationofanidentica1.textorbyendorsement,atthe1.atestbySeptember2024,andconf1.ictingn