1、BRITISH STANDARD BS EN 13645:2002 Installations and equipment for liquefied natural gas Design of onshore installations with a storage capacity between 5 t and 200 t The European Standard EN 13645:2001 has the status of a British Standard ICS 75.180.99 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PER
2、MITTED BY COPYRIGHT LAWBS EN 13645:2002 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 05 March 2002 BSI 05 March 2002 ISBN 0 580 39202 3 Nati
3、onal foreword This British Standard is the official English language version of EN 13645:2001. The UK participation in its preparation was entrusted to Technical Committee GSE/38, Installation and equipment for liquefied natural gas, which has the responsibility to: A list of organizations represent
4、ed on this committee can be obtained on request 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 Standards Catalogue under the section entitled “International Standards Correspondence
5、Index”, or by using the “Find” facility of the BSI Standards 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 itsel
6、f confer immunity from legal obligations. aid enquirers 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
7、in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 26, and 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 Am
8、d. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN13645 December2001 ICS75.200 Englishversion InstallationsandequipmentforliquefiednaturalgasDesignof onshoreinstallationswithastoragecapacitybetween5tand 200t Installationsetquipementsdegaznaturelliqufi Conceptiondesinstallationster
9、restresdunecapacitde stockagecompriseentre5tet200t AnlagenundAusrstungfrFlssigerdgasAuslegungvon landseitigenAnlagenmiteinerLagerkapazittzwischen5t und200t ThisEuropeanStandardwasapprovedbyCENon15November2001. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditions
10、forgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversion
11、inanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Iceland,Ireland,Italy,Luxemb
12、ourg,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2001CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalM
13、embers. Ref.No.EN13645:2001EEN13645:2001(E) 2 Contents page Foreword3 Introduction .4 1 Scope 5 2 Normativereferences 5 3 Termsanddefinitions. .6 4 Environmentalimpact .7 4.1 General7 4.2 Emissioncontrol 7 4.3 Boiloff/flashgasmanagement. 7 4.4 Externalcommunicationnetworks . .8 5 Safetyplan. .8 5.1
14、Purpose.8 5.2 Collectionofdataandinformation .8 5.3 Thresholdvalues .9 5.4 Identificationofrisks. 10 5.5 EstimationoftheconsequencesofagasorLNGrelease 11 6 Generalsafetymeasures . .12 6.1 Leaksandspillageprotection . .12 6.2 Overpressureprotection. 13 6.3 Fireprotection. .13 6.4 Confinement .13 6.5
15、Emergencyshutdown 13 6.6 Commissioninganddecommissioning. 13 6.7 Inspection .14 6.8 Personnel14 7 Designofvessels. 14 7.1 General14 7.2 Insulation 14 7.3 Foundations14 7.4 Instrumentation15 7.5 Overpressureprotection. 15 7.6 Impoundingbasin 16 7.7 LNGtransfer .16 7.8 Overflow16 7.9 Distancebetweenve
16、ssels .16 8 Installationdesign . 16 8.1 Hazardousareasandrestrictedaccessarea 16 8.2 Unloadingandloadingareas. .16 8.3 Circulationandparking. 17 8.4 Locationoffacilities 17 8.5 Lightningandearthing 17 AnnexA (informative) Schematicdescriptionofaprocessforasatelliteandfuellingplant .18 AnnexB (inform
17、ative) Examplesofsafetyscenariosandcalculations 19 AnnexC (informative) ExamplesofLNGstoragevesselsDesignconcepts 25EN13645:2001(E) 3 Foreword ThisEuropeanStandardhasbeenpreparedbyTechnicalCommitteeCEN/TC282“Installationandequipmentfor LNG“,thesecretariatofwhichisheldbyAFNOR. ThisEuropeanStandardsha
18、llbegiventhestatusofanationalstandard,eitherbypublicationofanidenticaltextor byendorsement,atthelatestbyJune2002,andconflictingnationalstandardsshallbewithdrawnatthelatestby June2002. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimpl
19、ementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark,Finland, France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Netherlands,Norway,Portugal,Spain,Sweden, SwitzerlandandtheUnitedKingdom. AnnexesA,BandCareinformative.EN13645:2001(E) 4 Introduction Theobjectiveofthisstandardistogivefunc
20、tionalguidelinesforLNGfacilitieswithatotalstoragecapacitybetween 5tand200t.Itrecommendsproceduresandpracticeswhichwillresultinsafeandenvironmentallyacceptable design,constructionandoperationofLNGplants. Thisstandardisnotapplicabletoexistinginstallations,butitsapplicationisrecommendedwhenmajor modifi
21、cationsareconsidered.EN13645:2001(E) 5 1Scope ThisEuropeanStandardspecifiesrequirementsforthedesignandconstructionofonshorestationaryliquefied naturalgas(LNG)installationswithatotalstoragecapacitybetween5tand200t.Thisstandardisnotapplicable toliquefactionprocessfacilitiesbasedonhydrocarbonrefrigeran
22、ts.Largerinstallationsaretreatedaccordingto EN1473:1997. Ifotherdangeroussubstancesarepresentinthefacility,theaforementionedstoragecapacitythresholdsmaybe reduced. NOTE Itisessentialthatthedesignerrefertolocalregulationtodeterminethenewvalues. Theinstallationstowhichthisstandardisapplicableincludeth
23、efollowing: LNGsatelliteplants.TheLNGmaybesuppliedbyroadtankers,bargeorrailcarriers.Afterstorage,LNGis vaporizedandsentouttoconsumers; LNGgasfuellingstationsforvehicles. TheinstallationislimitedfromthegasinletortheloadingLNGareatothegasoutletortheunloadingLNGarea. Fillingsystemsarenotcoveredhere. Fo
24、rthepurposesofclause4EnvironmentImpactandclause5SafetyPlan,thisstandardapplieswhereLNG storagecapacityexceedsthethresholdspecifiedinthelocalregulation.Ifthisvalueisnotavailable,athresholdof 50tisrecommended. Itisrecalledthat,inanycase,localregulationsprevail. 2 Normativereferences ThisEuropeanStanda
25、rdincorporatesbydatedorundatedreference,provisionsfromotherpublications.These normativereferencesarecitedattheappropriateplacesinthetextandthepublicationsarelistedhereafter.For datedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplytothisEuropean Standardonlywhenincorporatedin
26、itbyamendmentorrevision.Forundatedreferencesthelatesteditionofthe publicationreferredtoapplies(includingamendments). EN11271, ExplosiveatmospheresExplosionpreventionandprotectionBasicconceptsandmethodology. EN1160:1996, InstallationandequipmentforliquefiednaturalgasGeneralcharacteristicsofliquifiedn
27、aturalgas. EN1473:1997, InstallationandequipmentforliquefiednaturalgasDesignofonshoreinstallations. EN12066, InstallationandequipmentforliquefiednaturalgasTestingofinsulationliningsforliquefiednaturalgas retentionbunds. EN6007910, ElectricalapparatusforexplosivegasatmospheresPart10:Classificationofh
28、azardousareas(IEC 6007910:1995). ENV199122, EUROCODE1 BasisofdesignandactionsonstructuresPart22:ActionsonstructuresActions onstructuresexposedtofire. ENV199211,EUROCODE2 DesignofconcretestructuresPart11:Generalrulesandrulesforbuildings. ENV199212,EUROCODE2 DesignofconcretestructuresPart12:Generalrul
29、esStructuralfiredesign. ENV199311,EUROCODE3 DesignofsteelstructuresPart11:Generalrulesandrulesforbuildings. ENV199312,EUROCODE3 DesignofsteelstructuresPart12:GeneralrulesStructuralfiredesign. ENV199411,EUROCODE4 DesignofcompositesteelandconcretestructuresPart11:Generalrulesand rulesforbuildings.EN13
30、645:2001(E) 6 ENV199412,EUROCODE4 DesignofcompositesteelandconcretestructuresPart12:Generalrules Structuralfiredesign(includingTechnicalCorrigendum1:1995). 3 Termsanddefinitions ForthepurposesofthisEuropeanStandard,thedefinitionsgiveninEN1160:1996andEN1473:1997,andthe followingtermsanddefinitionsapp
31、ly. 3.1 abovegroundvessel vesselofwhichallorpartisexposedabovegroundlevel 3.2 boiloffgas gasresultingfromevaporationofLNGnearitsequilibriumstate 3.3 emergencyshutdown asystemthatsafelyandeffectivelystopsthewholeplantorindividualunitswhenanincidentoccurs 3.4 flashgas gasresultingfromsuddenevaporation
32、ofLNGoutofequilibriumcondition 3.5 impoundingarea anareadefinedthroughtheuseofdykesortopographyatthesiteforthepurposeofcontaininganyaccidentalspill ofLNG 3.6 LNGgasfuellingstation installationincludinganLNGstoragewhichsuppliesvehicleswithLNGorgasfromvaporizedLNG 3.7 loadingarea areawhereLNGisloadedf
33、romstoragevesselstotransportvesselswhentheplantsuppliesLNG 3.8 localregulation setofrules,laws,nationalagreements,internationalconventionswhichapplytoasite 3.9 operatingpersonnel anypersonwhoisauthorisedtoactonthecontroloftheplant,remotelyorlocally NOTE ItcanincludethedriversofLNGcarrierswhosupplyth
34、eplantwithLNG.Inthecaseoffuellingstationsforvehicles, driversofthesevehiclesarenotincludedunlessitisspecifiedinthemanagementplanoftheinstallation. 3.10 plantorsite areainsideofwhichpublicaccessisunauthorised 3.11 undergroundvessel vesselwhichiscompletelyburiedbelowthegeneralgroundlevelofthefacility
35、3.12 unloadingarea areawhereLNGisunloadedfromtransportvesselstostoragevesselswhentheplantissuppliedwithLNG 3.13 validatedmodel modelwhoseeffectivenesshasbeendemonstratedbyLNGindustrialteststhroughclearlyidentifiedproceduresEN13645:2001(E) 7 4 Environmentalimpact 4.1General Anenvironmentalimpactstudy
36、shallbecarriedoutwhentheLNGstoragecapacityexceedsthethresholdspecified inthelocalregulation.Ifthisvalueisnotavailable,athresholdof50tisrecommended. TheimpactstudyshalltakeintoaccountanyrestrictionsonthetransportationofLNG. Allemissionsfromtheplant,thatis,solid,liquid(includingwater),andgaseous(inclu
37、dingnoxiousodours)shallbe identified.Measuresshallbeimplementedtoensurethatnormalandaccidentalemissionsareharmlessto persons,property,animalsorvegetation. Aneffluentmanagementpolicyshallbeestablishedifrelevant.Therequirementsinthehandlingofanytoxic materialsshallbeidentified. Anyincreaseinactivityca
38、usedbyoperationshallalsobeassessedandundesirablelevelsofactivitiesshallbe eliminatedifpossibleorminimizedandrestricted.Thefollowingitemsshouldbeconsidered: noise levels; vibration levels; nightworking,effectoflights; gasflaringorventing; warmingorcoolingofwater. NOTE Fogmaybecreatedlocallybyatmosphe
39、ricvaporizers. 4.2 Emissioncontrol Thefollowingshallbesafelycontrolled: combustionproductsfromcompressordrivers,submergedvaporizers,firedheatersforregeneration; normaloraccidentalventingofgases; normaloraccidentalflaringofgases; oilywatercondensedduringdryerregenerationorfrommachines; inthecaseofwat
40、ercooledequipment,hydrocarboncontaminationofthiswaterfromleakingexchangertubes; disposalofwasteproducts(chemicals,wasteoilandchlorinatedorganiccompounds); vaporizer water; odorant chemicals. Thestandardofemissionscontrolshallfollowasaminimumspecificationssetbylocalregulation. 4.3 Boiloff/flashgasman
41、agement Continuousflaringorventingshallbeavoided. Boiloffgascanberecycledinaliquefactionprocessorincludedinthesendoutgastoavoidwastegasduring normaloperation.EN13645:2001(E) 8 4.4 Externalcommunicationnetworks Trafficratesofexternalroads,railwaysandwaterwaynetworksneartheLNGplantshallbeidentified. 5
42、 Safetyplan 5.1Purpose LNGinstallationsshallbedesignedtominimizetheriskstopropertyandlifeoutsideandinsidetheplant.Asafety planshallbedefinedduringthedesignoftheplantorduringamajormodificationwhentheLNGstoragecapacity exceedsthethresholdspecifiedinthelocalregulation.Ifthisvalueisnotavailable,athresho
43、ldof50tis recommended. Thesafetyplanshallincludeanidentificationofrisksandanappropriateappraisaloftheconsequences.Itshall alsoincludethesafetymeasuresandprinciplesoftheactionsperformedbytheoperatorforcontrollingrisksfor accidents. Implementationofthesafetyplanshallbeinitiatedasearlyaspossibleandbere
44、viewedwhenunacceptablerisks areidentifiedduringthedesign. Ahazardsandoperabilitystudy(HAZOPorequivalent)shallbeconductedtoidentifyandeliminateorminimise hazards. AnnexAillustratestheschematicdescriptionoftheprocessrelatedtoanLNGsatelliteandfuellingplant.This descriptionissimplifiedanditisnotconsideredtobedirectlyapplic
