1、BRITISH STANDARD BS EN 12952-8:2002 Water-tube boilers and auxiliary installations Part 8: Requirements for firing systems for liquid and gaseous fuels for the boiler The European Standard EN 12952-8:2002 has the status of a British Standard ICS 27.040 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PER
2、MITTED BY COPYRIGHT LAWBS EN 12952-8:2002 This British Standard, having been prepared under the direction of the Engineering Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 13 June 2002 BSI 13 June 2002 ISBN 0 580 39860 9 Nati
3、onal foreword This British Standard is the official English language version of EN 12952-8:2002. When the reference to this European Standard has been published in the Official Journal of the European Communities (OJ), compliance with it will confer a presumption of conformity with the essential req
4、uirements covered by the standard in respect of the Pressure Equipment Directive. The UK participation in its preparation was entrusted to Technical Committee PVE/2, Water-tube boilers, which has the responsibility to: A list of organizations represented on this committee can be obtained on request
5、to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Elect
6、ronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users of this publication are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligatio
7、ns. aid enquirers to understand the text; present to the responsible international/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 pa
8、ges This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 26, 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 CommentsEUROPEAN
9、STANDARD NORMEEUROPENNE EUROPISCHENORM EN129528 May2002 ICS27.040 Englishversion WatertubeboilersandauxiliaryinstallationsPart8: Requirementsforfiringsystemsforliquidandgaseousfuelsfor theboiler ChaudirestubesdeauetinstallationsauxiliairesPartie 8:Exigencespourlesquipementsdechauffepour combustibles
10、gazeuxetliquidesdelachaudire WasserrohrkesselundAnlagenkomponentenTeil8: AnforderungenanFeuerungsanlagenfrflssigeund gasfrmigefrdenKessel ThisEuropeanStandardwasapprovedbyCENon15May2002. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an
11、Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadeb
12、ytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,
13、Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2002CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN
14、129528:2002EEN129528:2002(E) 2 Contents Page Foreword3 1 Scope 5 1.1 Firingsystems 5 1.2 Fuels5 1.3 Operation 5 2 Normativereferences 5 3 Termsanddefinitions. .6 4 Fuelsupply . 10 4.1 General10 4.2 Fueltransferandpreparation. 10 4.3 Fuellines .10 4.4 Safetyshutoffdevices (Safetytripvalves) .12 5 Equ
15、ipmentforairsupplyandfluegasdischarge . .13 5.1 Airsupply 13 5.2 Air/fuelratio 14 5.3 Fluegasdischarge 14 6 Firingsystem. .15 6.1 Burners .15 6.2 Fluegasrecirculation 15 6.3 Controlandmonitoring .16 6.4 Electricalequipment 17 6.5 Safetyprecautions .17 6.6 Commonstackforseveralfiringsystems . .18 7 O
16、peratingmanual 18 8 Particularrequirementsforfiringsystemsburninggaseousfuelswithhighrelativedensity 18 8.1 Mainfiringsystems . 18 8.2 Ignitionburnersystems . .19 AnnexA (normative) Chemicalrecoveryboiler(blackliquorboiler).20 A.1 General20 A.2 Additionalrequirementsforthefiringsystemforblackliquori
17、nthechemicalrecoveryboiler 20 A.3 Specialrequirementsforoilorgasfiringforchemicalrecoveryboilers .21 AnnexB (informative) Operationalrequirementsforpermanentsupervisedfiringsystemsforliquid andgaseousfuels 22 B.1 General22 B.2 Operation 22 B.3 Fuelpreparation .22 B.4 Safetyshutoffdevices .22 B.5 Air
18、/fuelratio 22 B.6 Modificationoffiring,burnerorair/fuelratiosetting .22 B.7 Controlandmonitoring .23 B.8 Purging,startupandshutdown . 23 B.9 Emergencyoperation . .23 B.10 Operatingandmaintenanceinstructions. .23 B.11 Firingsystemsburninggaseousfuelswithhighrelativedensity23 AnnexZA (informative) Cla
19、usesofthisEuropeanStandardaddressingessentialsafetyrequirements orotherprovisionsofthePressureEquipmentDirectives.25 Bibliography 26EN129528:2002(E) 3 Foreword Thisdocument(EN129528:2002)hasbeenpreparedbyTechnicalCommitteeCEN/TC269“Shellandwatertube boilers“,thesecretariatofwhichisheldbyDIN. ThisEur
20、opeanStandardhasbeenpreparedunderamandategiventoCENbytheEuropeanCommissionandthe EuropeanFreeTradeAssociation,andsupportsessentialrequirementsofEUDirective(s). ForrelationshipwithEUDirective(s),seeinformativeAnnexZA,whichisanintegralpartofthisstandard. ThisEuropeanStandardshallbegiventhestatusofanat
21、ionalstandard,eitherbypublicationofanidenticaltextor byendorsement,atthelatestbyNovember2002,andconflictingnationalstandardsshallbewithdrawnatthelatest byNovember2002. TheEuropeanStandardEN 12952concerning“ Watertubeboilersandauxiliaryinstallations”consistsofthe followingParts: Part1:General. Part2:
22、Materialsforpressurepartsofboilersandaccessories. Part3:Designandcalculationforpressureparts. Part4:Inserviceboilerlifeexpectancycalculations. Part5:Workmanshipandconstructionofpressurepartsoftheboiler. Part6:Inspectionduringconstruction,documentationandmarkingofpressurepartsoftheboiler. Part7:Requi
23、rementsforequipmentfortheboiler. Part8:Requirementsforfiringsystemsforliquidandgaseousfuelsfortheboiler. Part9:Requirementsforfiringsystemsforpulverizedsolidfuelsfortheboiler. Part10:Requirementsforsafeguardsagainstexcessivepressure. Part11:Requirementsforlimitingdevicesoftheboilerandaccessories. Pa
24、rt12:Requirementsforboilerfeedwaterandboilerwaterquality. Part13:Requirementsforfluegascleaningsystems. Part14:RequirementsforfluegasDENOXsystems. Part15:Acceptancetests. Part16:Requirementsforgrateandfluidisedbedfiringsystemsforsolidfuelsfortheboiler. CR12952Part17:Guidelinefortheinvolvementofanins
25、pectionbodyindependentofthemanufacturer. Although,thesePartscanbeobtainedseparately,itshouldberecognizedthatthePartsareinterdependent.As such,thedesignandmanufactureofwatertubeboilersrequirestheapplicationofmorethanonePartinorderfor therequirementsofthestandardtobesatisfactorilyfulfilled.EN129528:20
26、02(E) 4 NOTE Parts4and15arenotapplicableduringthedesign,constructionandinstallationstages. AnnexAofthisEuropeanStandardisnormativeandAnnexBisinformative. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Aust
27、ria,Belgium,CzechRepublic,Denmark,Finland, France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Spain, Sweden,SwitzerlandandtheUnitedKingdom.EN129528:2002(E) 5 1Scope 1.1 Firingsystems ThisPartofthisEuropeanStandardspecifiesrequirements,foroilandgasfiringsystemsof
28、steamboilersandhot watergeneratorsasdefinedinEN129521. Theserequirementsalsoapplytofiringsystemsofchemicalrecoveryboilers(blackliquorboilers)withthe additionsandamendmentsspecifiedinAnnexAofthisstandard. NOTE1 Thisstandardisnotapplicabletocoiltypeboilers(flashboilers/smallboilers)thatuseburnersinacc
29、ordancewith EN129537applyforsingleburnerinstallations. 1.2 NOTE2 Thisstandardisnotapplicabletothestorageofliquidfuelsandtotransfer stationsoflongdistancegaspipelines.Fuels ThisPartofthisEuropeanStandardspecifiesrequirements,whichcovertheuseofliquidandgaseousfuelsas definedinthisstandard.Fuelsdeviati
30、ngfromstandardizedcommerciallyavailabletypesmayrequireadditionalor alternativesafetymeasures.ForblackliquorthesesafetymeasuresaregiveninAnnexA. 1.3Operation ThisPartofthisEuropeanStandardspecifiesrequirementsforoperationalequipmentinclauses4to8whichapply tosteamboilersandhotwatergeneratorswithperman
31、entsupervisionbyproperlytrainedpersonnelfamiliarwith thespecialconditionsofthefiringsystemandthetypeoffuelbeingfired. 2 Normativereferences ThisEuropeanStandardincorporatesbydatedorundatedreference,provisionsfromotherpublications.These normativereferencesarecitedattheappropriateplacesinthetextandthe
32、publicationsarelistedhereafter.For datedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplytothisEuropean Standardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreferencesthelatesteditionofthe publicationreferredtoapplies(includingamendments). EN161, Automaticshutoffva
33、lvesforgasburnersandgasappliances. EN264, SafetyshutoffdevicesforcombustionplantsusingliquidfuelsSafetyrequirementsandtesting. EN2871, ApprovaltestingofweldersFusionweldingPart1:Steels. EN7511, Sealingmaterialsformetallicthreadedjointsincontactwith1st,2ndand3rdfamilygasesandhot waterPart1:Anaerobicj
34、ointingcompounds. EN7512, Sealingmaterialsformetallicthreadedjointsincontactwith1st,2ndand3rdfamilygasesandhot waterPart2:Nonhardeningjointingcompounds. EN7513, Sealingmaterialsformetallicthreadedjointsincontactwith1st,2ndand3rdfamilygasesandhot waterPart3:UnsinteredPTFEtapes. EN1044, BrazingFillerm
35、etals. EN129521, 1:General. EN129525:2001, Part5:Workmanshipandconstructionof pressurepartsoftheboiler. EN134802, MetallicindustrialpipingPart2:Materials.EN129528:2002(E) 6 prEN501561, ElectricalequipmentforfurnacesandancillaryequipmentPart1:Requirementsforapplication designandinstallation. ENISO367
36、7, Fillermetalforsoftsoldering,brazingandbrazeweldingDesignation(ISO3677:1992). ISO71, PipethreadswherepressuretightjointsaremadeonthethreadsPart1:Dimensions,tolerancesand designation.(ISO71:1994) ISO2281, PipethreadswherepressuretightjointsarenotmadeonthethreadsPart1:Dimensions,tolerances anddesign
37、ation(ISO2281:2000). 3 Termsanddefinitions ForthepurposesofthisPartofthisEuropeanStandardandthefollowingtermsanddefinitionsapply. 3.1 blackliquor spentliquorfromthepulpcook 3.2 blackliquorgun devicefortheintroductionoftheblackliquorasasprayofdropletsintothefurnace.Theblackliquorgunisnota burner 3.3
38、highvolumelowconcentrationodorousgas mixturesofairandalowconcentrationofodorousgasescollectedfromthepulpmillprocesses,wherethe concentrationofthecombustibleodorousgasisalwayskeptbelowthelowerexplosionlimit 3.4 burners devices(includingmainorigniterburners)fortheintroductionoffuelandairintoacombustio
39、nchamberatrequired velocities,turbulenceandlocalfuelconcentrationtoestablishandmaintainproperignitionandstablecombustion ofthefuel.Burnersaredifferentiatedbytheirmodeofoperation 3.4.1 automaticburners burnersequippedwithautomaticignition,flamemonitoringandsafetycontroldevicesthatcontrolthefiringrate
40、 withouttheinterventionbyoperatingpersonnel 3.4.2 semiautomaticburners burnersequippedwithautomaticignition,flamemonitoringandsafetycontroldeviceswhicharestartedand stoppedbytheinterventionofoperatingpersonnel 3.4.3 chemicalrecoveryboilerstartupburner oilorgasfiredburnermainlyintendedfortheinitiatio
41、noftheblackliquorcombustionprocess.Thechemical recoveryboilerstartupburnersarelocatedinandintegratedwithacombustionairregister,liketheprimaryorthe secondaryairregisterofthefurnace.Thustheyhavenoindividualairsupplyandnoindividualcombustionair control 3.4.4 multifuelburners burnersinwhichmorethanonefu
42、elisburnedeithersimultaneouslyoralternately 3.4.5 pilotburner burnerwhichmaintainsaproperpermanentignitionsourceforoneoragroupofothernonmonitoredburnersEN129528:2002(E) 7 3.5 burnergroup burnersoperatedinunisonandcontrolledjointly.Oneoftheburnerscanbeamasterburner 3.6 burnermanagementsystem systemth
43、atperformsapredeterminedsequenceofactionsandalwaysoperatesinconjunctionwithaflame monitorthatreactstosignalsfromcontrolandsafetydevices,givescontrolcommands,controlsthestartup sequence,supervisestheburneroperation,andmanagescontrolledshutdownandlockout 3.7 firingsystem totalequipmentrequiredforthecombustionoffuelsincludingtheinstallationsforthestorage,preparation,and supplyoffuels,thecombustionairsupply,theburner(s),thefluegasdischarge,andallrelatedcontroland monitoringdevices.Afluegasrecirculationsystemcanbeanintegralpartofthefiringsyst
