BS EN 12255-1-2002 Wastewater treatment plants - General construction principles《污水处理工厂 一般建造原则》.pdf

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1、BRITISH STANDARD BS EN 12255-1:2002 Wastewater treatment plants Part 1: General construction principles The European Standard EN 12255-1:2002 has the status of a British Standard ICS 13.030.40; 13.060 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS EN 12255-1:2002 This Briti

2、sh Standard, having been prepared under the direction of the Building and Civil Engineering Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 5 February 2002 BSI 5 February 2002 ISBN 0 580 39005 5 National foreword This British

3、Standard is the official English language version of EN 12255-1:2002. The UK participation in its preparation was entrusted to Technical Committee B/505, Wastewater engineering, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its s

4、ecretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Stand

5、ards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers

6、to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a fr

7、ont cover, an inside front cover, the EN title page, pages 2 to 20, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISC

8、HENORM EN122551 January2002 ICS13.060.30 Englishversion WastewatertreatmentplantsPart1:Generalconstruction principles StationsdpurationPartie1:Principesgnrauxde construction KlranlagenTeil1:AllgemeineBaugrundstze ThisEuropeanStandardwasapprovedbyCENon9November2001. CENmembersareboundtocomplywiththeC

9、EN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexist

10、sinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Fin

11、land,France,Germany,Greece, Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2002CEN Allrightsofexplo

12、itationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN122551:2002EEN122551:2002(E) 2 Contents page Foreword3 1 Scope 5 2 Normativereferences 5 3 Termsanddefinitions. .6 4 Requirements .7 4.1 Generalrequirements 7 4.2 Designrequirements . 8 4.3 Structuralrequirements . .8 4.3

13、.1 General8 4.3.2 Dimensionaltolerances .9 4.3.3 Concretetracks. .9 4.3.4 Fixingsandconnectionsbetweenequipmentandstructures 9 4.3.5 Access.9 4.3.6 Buildingventilation 10 4.3.7 Watersupplyanddrainage. 10 4.3.8 Liftingequipment. 10 4.3.9 Storageforhazardouschemicalsandfuels . 10 4.4 Requirementsforeq

14、uipment 10 4.4.1 Principlesformechanicaldesign .10 4.4.2 Generaldesignrequirements . 11 4.4.3 Environmentalimpact .15 4.4.4 Safety 15 4.4.5 Documentation.15 4.4.6 Spareparts,specialtools .15 5 Testmethods 15 5.1 Functionandperformance 15 5.2 Tightnesstestingofconcretestructures 16 5.3 Tightnesstesti

15、ngofearthenbasins . .16 5.4 Tightnesstestingofotherstructuresandequipment . 16 AnnexA (informative) Explanatorynotes . .17 AnnexB (normative) Structuraltolerances . 19 B.1 Circulartank . 19 B.1.1 Circulartankwithscraper .19 B.1.2 Circulartankwithascraperbridgetravellingonthesidewall(track). 19 B.2 R

16、ectangulartank 19 Bibliography 20EN122551:2002(E) 3 Foreword ThisEuropeanStandardhasbeenpreparedbyTechnicalCommitteeCEN/TC165“Wastewaterengineering“,the secretariatofwhichisheldbyDIN. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidenticaltextor byendorsement,at

17、thelatestbyJuly2002,andconflictingnationalstandardsshallbewithdrawnatthelatestby December2002. ItisthefirstpartpreparedbytheWorkingGroupsCEN/TC165/WG42and43relatingtothegeneralrequirements andprocessesfortreatmentplantsforatotalnumberofinhabitantsandpopulationequivalents(PT)over50.The partsoftheseri

18、esareasfollows: Part1:Generalconstructionprinciples Part3:Preliminarytreatment Part4:Primarysettlement Part5:Lagooningprocesses Part6:Activatedsludgeprocesses Part7:Biologicalfixedfilmreactors Part8:Sludgetreatmentandstorage Part9:Odourcontrolandventilation Part10:Safetyprinciples Part11:Generaldata

19、required Part12:Controlandautomation Part13:ChemicaltreatmentTreatmentofwastewaterbyprecipitation/flocculation Part14:Disinfection Part15:Measurementoftheoxygentransferincleanwaterinaerationtanksofactivatedsludgeplants Part16:Physical(mechanical)filtration 1 ) NOTE Forrequirementsonpumpinginstallati

20、onsatwastewatertreatmentplants,providedinitiallyaspart2“Pumping installationsforwastewatertreatmentplants“,seeEN7526“DrainandsewersystemsoutsidebuildingsPart6:Pumping installations“. ThepartsEN122551,EN122553toEN122558andEN1225510andEN1225511wereimplemented togetherasaEuropeanpackage(Resolution232/2

21、001takenbyCEN/TC165). 1) inpreparationEN122551:2002(E) 4 ThisEuropeanstandardislimitedtogeneralconstructionprinciples.Separatestandardsforspecialconstruction principlesforelementsofwastewatertreatmentplantsarecoveredinotherparts. SafetyprinciplesandgeneraldatarequiredarecoveredinEN1225510andEN122551

22、1. AnnexAisinformative,annexBisnormative. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisdocument:Austria,Belgium,theCzechRepublic,Denmark,Finland,France, Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,N

23、orway,Portugal,Spain,Sweden, SwitzerlandandtheUnitedKingdom.EN122551:2002(E) 5 1Scope ThisEuropeanStandardspecifiesgeneralrequirementsforstructuresandequipmentastheyrelatetowastewater treatmentplantsforatotalpopulationofmorethan50PT. Theprimaryapplicationisdesignedforwastewatertreatmentplantsforthet

24、reatmentofdomesticandmunicipal wastewater. Requirementsforstructureswhicharenotspecificforwastewatertreatmentplantsarenotwithinthescopeofthis EuropeanStandard.OtherENscanapply. Equipmentwhichisnotsolelyusedinwastewatertreatmentplantsissubjecttotheapplicableproductstandards. However,specificrequireme

25、ntsforsuchequipmentwhenusedinwastewatertreatmentplantsareincludedinthis part. Generalprinciplesofbuildingconstruction,mechanicalandelectricalengineeringarenotsubjectofthisstandard. ThisEuropeanStandarddoesnotcoverthedesignoftreatmentprocesses. DifferencesinwastewatertreatmentthroughoutEuropehaveledt

26、oavarietyofsystemsbeingdeveloped.This standardgivesfundamentalinformationaboutthesystems;thisstandardhasnotattemptedtospecifyallavailable systems. DetailedinformationadditionaltothatcontainedinthisstandardmaybeobtainedbyreferringtotheBibliography. 2 Normativereferences ThisEuropeanStandardincorporat

27、esbydatedorundatedreference,provisionsfromotherpublications.These normativereferencesarecitedattheappropriateplacesinthetext,andthepublicationsarelistedhereafter.For datedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplytothisEuropean Standardonlywhenincorporatedinitbyamendme

28、ntorrevision.Forundatedreferencesthelatesteditionofthe publicationreferredtoapplies(includingamendments). EN7526, DrainandsewersystemsoutsidebuildingsPart6:Pumpinginstallations . EN809, PumpsandpumpunitsforliquidsCommonsafetyrequirements . EN1085, WastewatertreatmentVocabulary . EN122559, Wastewater

29、treatmentplantsPart9:Odourcontrolandventilation . EN1225510, WastewatertreatmentplantsPart10:Safetyprinciples . prEN1225512, WastewatertreatmentplantsPart12:Controlandautomation. EN600341, RotatingelectricalmachinesPart1:Ratingandperformance(IEC600341:1996,modified). EN60529, Degreesofprotectionprov

30、idedbyenclosures(IPcode)(IEC60529:1989) . ISO35061, MechanicalpropertiesofcorrosionresistantstainlesssteelfastenersPart1:Bolts,screwsandstuds . ISO35062, MechanicalpropertiesofcorrosionresistantstainlesssteelfastenersPart2:Nuts . ISO35063, Mechanicalpropertiesofcorrosionresistantstainlesssteelfasten

31、ersPart3:Setscrewsandsimilar fastenersnotundertensilestress . ISO4200, Plainendsteeltubes,weldedandseamlessGeneraltablesofdimensionsandmassesperunitlength .EN122551:2002(E) 6 3 Termsanddefinitions ForthepurposesofthisEuropeanStandard,thetermsanddefinitionsgiveninEN1085andthefollowingapply. 3.1 struc

32、ture anyconstructionanditscomponentsbuiltfortheaccommodationofequipment 3.2 equipment anycomponentwhichisinstalledin,mountedon,attachedto,oroperatedonstructures,intheperformanceoftheir intendedfunction 3.3 unit anystructureincludinganyrelatedequipmentwhichisusedasaprocessstageandwhichcanbeisolatedfr

33、om otherparallel,upstreamordownstreamstructures NOTE Examplesforaunitareagritchamber,aclarifier,anaerationtank,athickener,adigester. 3.4 assembly mechanicalequipmentthatcanberemovedandreplacedasawhole NOTE Examplesforanassemblyareapump,acompressor,agasengine,anaerator. 3.5 wastewatertreatmentplant s

34、ystemforthepurificationofwastewaterincludingstructuresandequipment 3.6 client municipality,cityorotherorganisationwhichintentstobuiltawastewatertreatmentplantorpartsthereof,orits representative 3.7 Bidder companyorotherorganisationwhichofferstobuiltaplant,ortobuiltorsupplypartsthereof 3.8 contractor

35、 companyororganisationwhichreceivedacontracttobuiltaplant,ortobuiltorsupplypartsthereof 3.9 tracks thosepartsofastructureonwhichwheelsrun 3.10 designloadingY N effectiveaverageloadingincontinuousoperationunderfullload NOTE Itisgreaterthanorequaltothevalueoftheoperatingloadingwhich,forexample,fluctua

36、tesasafunctionofthe givenload. 3.11 continuousloadbearingcapacityY C loadbearingcapacityincontinuousoperationunderfullload 3.12 maximumloadingY max peakloadingwhichistakenastheswitchoffvaluetowhich,forexample,overloadcircuitbreakersareadjustedEN122551:2002(E) 7 3.13 maximumloadbearingcapacityY B hig

37、hestpossibleloadbearingcapacitylimitedtoshorttermloadpeaks,suchasoccuronswitchingonandoff NOTE Inaddition,alarmloadingsY S,lyingbetweenthedesignloadingY NandtheswitchoffloadingY max,canbeagreed asrequired,Y NandY maxbeingstatedbytheequipmentsupplier. 3.14 utilisationfactorK A parameterfortheeffectso

38、ndriveunitsetc.,intrinsictotheiroperation NOTE UsuallyK Aincludeseitherdirectlyorindirectlyinformationontheloading,runningtimeandtemperatureandisan overallvalueoftherelationshipbetweenloadbearingcapacityandloading. 3.15 designservicelife 2) operatingtimeuntilbreakdownofamachineryelementunderdesignlo

39、ading,whichisreachedbyacertain percentageoftheelementstested NOTE asanexample,thepercentageforrollingbearingsis90%; thedesignservicelifeisdifferentfromboththewarrantytimeandanaverageservicelifeofuse,asusedforcostefficien cy calculations. 3.16 modeofoperation characteristicvaluerelatedtotheeffectsonm

40、otorsandotherelectricalcomponentsintrinsictotheiroperation(e.g. frequencyofstarts,temperatures) 3.17 degreeofprotection characteristicvaluerelatedtotheeffectsonmotorsandotherelectricalcomponentsintrinsictotheirenvironmental conditions(e.g.effectsofwaterordust) 4Requirements 4.1Generalrequirements Wa

41、stewatertreatmentplantsshallmeetthefollowingrequirements: a) nationalregulationsshallbeobserved; b) thedischargelimitsshallbemet; c) becapableofsatisfactorytreatmentofthefullrangeofflowsandloads; d)personal safety; e) nuisance,odour,noiseandtoxicity,aerosolsandfoamshallbeconsideredandshallmeettherel

42、evant requirementsaccordingtoEN122559andEN1225510; f) dangertooperatingpersonnelshallbeminimized; 2) ExplanatorynoteseeannexAEN122551:2002(E) 8 g) therequiredservicelifeandlongtermstructuralintegrityshallbeachieved,includingwaterandgas; h)tightness; i) provisionsshallbemadeforcaseofoperationandmaint

43、enance; j) provisionforfutureextensionsormodificationsoftheplantshallbeconsidered; k) thereliabilityofoperationshallbehighandriskofdangerandtheimpactofmalfunctionsshallbelimited; l) becosteffectiveinrespectoftotalcosts(capitalandoperatingcosts); m) theenergyconsumptionduringconstructionandoperationshallbeconsidered; n) thewasteproductsshallbereducedinquantityandimprovedinqualityasfarasreasonablyachievableto allowforreuseorsafedisposal. 4.2Designrequirements Thefollowingrequirementsshallbeconsideredduringthedesignstageofawastew