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BRITISHSTANDARDBSEN1427622007PRESSUREEQUIPMENTFORREFRIGERATINGSYSTEMSANDHEATPUMPSPART2PIPINGGENERALREQUIREMENTSICS23020302708027200G49G50G3G38G50G51G60G44G49G42G3G58G44G55G43G50G56G55G3G37G54G44G3G51G40G53G48G44G54G54G44G50G49G3G40G59G38G40G51G55G3G36G54G3G51G40G53G48G44G55G55G40G39G3G37G60G3G38G50G51G60G53G44G42G43G55G3G47G36G58A12011LICENSEDCOPYUNIVERSITYOFAUCKLANDLIBRARY,UNIVERSITYOFAUCKLANDLIBRARY,VERSIONCORRECTASOF08/05/20121740,CTHEBRITISHSTANDARDSINSTITUTION2012NATIONALFOREWORDTHISBRITISHSTANDARDISTHEUKIMPLEMENTATIONOFEN1427622007A12011ITSUPERSEDESBSEN1427622007,WHICHISWITHDRAWNTHEUKPARTICIPATIONINITSPREPARATIONWASENTRUSTEDTOTECHNICALCOMMITTEERHE/18,REFRIGERATIONSAFETYALISTOFORGANIZATIONSREPRESENTEDONTHISCOMMITTEECANBEOBTAINEDONREQUESTTOITSSECRETARYTHISPUBLICATIONDOESNOTPURPORTTOINCLUDEALLTHENECESSARYPROVISIONSOFACONTRACTUSERSARERESPONSIBLEFORITSCORRECTAPPLICATIONCOMPLIANCEWITHABRITISHSTANDARDCANNOTCONFERIMMUNITYFROMLEGALOBLIGATIONSBSEN1427622007A12011AMENDMENTS/CORRIGENDAISSUEDSINCEPUBLICATIONDATECOMMENTS30JUNE2011IMPLEMENTATIONOFCENAMENDMENTA12011THISBRITISHSTANDARDWASPUBLISHEDUNDERTHEAUTHORITYOFTHESTANDARDSPOLICYANDSTRATEGYCOMMITTEEON31AUGUST2007BSI2011ISBN9780580711015LICENSEDCOPYUNIVERSITYOFAUCKLANDLIBRARY,UNIVERSITYOFAUCKLANDLIBRARY,VERSIONCORRECTASOF08/05/20121740,CTHEBRITISHSTANDARDSINSTITUTION2012EUROPEANSTANDARDNORMEEUROPENNEEUROPISCHENORMEN1427622007A1FEBRUARY2011ICS23020302708027200SUPERSEDESEN1427622007ENGLISHVERSIONPRESSUREEQUIPMENTFORREFRIGERATINGSYSTEMSANDHEATPUMPSPART2PIPINGGENERALREQUIREMENTSEQUIPEMENTSSOUSPRESSIONPOURSYSTMESDERFRIGRATIONETPOMPESCHALEURPARTIE2TUYAUTERIESEXIGENCESGNRALESDRUCKGERTEFRKLTEANLAGENUNDWRMEPUMPENTEIL2ROHRLEITUNGENALLGEMEINEANFORDERUNGENTHISEUROPEANSTANDARDWASAPPROVEDBYCENON17FEBRUARY2007ANDINCLUDESAMENDMENT1APPROVEDBYCENON13DECEMBER2010CENMEMBERSAREBOUNDTOCOMPLYWITHTHECEN/CENELECINTERNALREGULATIONSWHICHSTIPULATETHECONDITIONSFORGIVINGTHISEUROPEANSTANDARDTHESTATUSOFANATIONALSTANDARDWITHOUTANYALTERATIONUPTODATELISTSANDBIBLIOGRAPHICALREFERENCESCONCERNINGSUCHNATIONALSTANDARDSMAYBEOBTAINEDONAPPLICATIONTOTHECENCENELECMANAGEMENTCENTREORTOANYCENMEMBERTHISEUROPEANSTANDARDEXISTSINTHREEOFFICIALVERSIONSENGLISH,FRENCH,GERMANAVERSIONINANYOTHERLANGUAGEMADEBYTRANSLATIONUNDERTHERESPONSIBILITYOFACENMEMBERINTOITSOWNLANGUAGEANDNOTIFIEDTOTHECENCENELECMANAGEMENTCENTREHASTHESAMESTATUSASTHEOFFICIALVERSIONSCENMEMBERSARETHENATIONALSTANDARDSBODIESOFAUSTRIA,BELGIUM,BULGARIA,CROATIA,CYPRUS,CZECHREPUBLIC,DENMARK,ESTONIA,FINLAND,FRANCE,GERMANY,GREECE,HUNGARY,ICELAND,IRELAND,ITALY,LATVIA,LITHUANIA,LUXEMBOURG,MALTA,NETHERLANDS,NORWAY,POLAND,PORTUGAL,ROMANIA,SLOVAKIA,SLOVENIA,SPAIN,SWEDEN,SWITZERLANDANDUNITEDKINGDOMEUROPEANCOMMITTEEFORSTANDARDIZATIONCOMITEUROPENDENORMALISATIONEUROPISCHESKOMITEEFRNORMUNGMANAGEMENTCENTREAVENUEMARNIX17,B1000BRUSSELS2011CENALLRIGHTSOFEXPLOITATIONINANYFORMANDBYANYMEANSRESERVEDWORLDWIDEFORCENNATIONALMEMBERSREFNOEN1427622007A12011ELICENSEDCOPYUNIVERSITYOFAUCKLANDLIBRARY,UNIVERSITYOFAUCKLANDLIBRARY,VERSIONCORRECTASOF08/05/20121740,CTHEBRITISHSTANDARDSINSTITUTION2012EN1427622007A12011E2CONTENTSPAGEFOREWORD3INTRODUCTION41SCOPE52NORMATIVEREFERENCES63TERMS,DEFINITIONS,SYMBOLS,QUANTITIESANDUNITS74MATERIAL85PIPINGCLASSIFICATION96DESIGN117MANUFACTURING178TESTINGANDINSPECTION17ANNEXAINFORMATIVEDNSYSTEM27ANNEXZAINFORMATIVERELATIONSHIPBETWEENTHISEUROPEANSTANDARDANDTHEESSENTIALREQUIREMENTSOFEUDIRECTIVE97/23/EC28BIBLIOGRAPHY29BSEN1427622007A12011LICENSEDCOPYUNIVERSITYOFAUCKLANDLIBRARY,UNIVERSITYOFAUCKLANDLIBRARY,VERSIONCORRECTASOF08/05/20121740,CTHEBRITISHSTANDARDSINSTITUTION2012EN1427622007A12011E3FOREWORDTHISDOCUMENTEN1427622007A12011HASBEENPREPAREDBYTECHNICALCOMMITTEECEN/TC182“REFRIGERATINGSYSTEMS,SAFETYANDENVIRONMENTALREQUIREMENTS”,THESECRETARIATOFWHICHISHELDBYDINTHISEUROPEANSTANDARDSHALLBEGIVENTHESTATUSOFANATIONALSTANDARD,EITHERBYPUBLICATIONOFANIDENTICALTEXTORBYENDORSEMENT,ATTHELATESTBYAUGUST2011,ANDCONFLICTINGNATIONALSTANDARDSSHALLBEWITHDRAWNATTHELATESTBYAUGUST2011THISDOCUMENTINCLUDESAMENDMENT1,APPROVEDBYCENON20101213THISDOCUMENTSUPERSEDESEN1427622007THESTARTANDFINISHOFTEXTINTRODUCEDORALTEREDBYAMENDMENTISINDICATEDINTHETEXTBYTAGS“ATTENTIONISDRAWNTOTHEPOSSIBILITYTHATSOMEOFTHEELEMENTSOFTHISDOCUMENTMAYBETHESUBJECTOFPATENTRIGHTSCENAND/ORCENELECSHALLNOTBEHELDRESPONSIBLEFORIDENTIFYINGANYORALLSUCHPATENTRIGHTSTHISEUROPEANSTANDARDHASBEENPREPAREDUNDERAMANDATEGIVENTOCENBYTHEEUROPEANCOMMISSIONANDTHEEUROPEANFREETRADEASSOCIATION,ANDSUPPORTSESSENTIALREQUIREMENTSOFEUDIRECTIVE97/23/ECCONCERNINGPRESSUREEQUIPMENTFORRELATIONSHIPWITHEUDIRECTIVE97/23/EC,SEEINFORMATIVEANNEXZA,WHICHISANINTEGRALPARTOFTHISDOCUMENTTHISDOCUMENTCONSISTSOFTHEFOLLOWINGPARTSUNDERTHEGENERALTITLEPRESSUREEQUIPMENTFORREFRIGERATINGSYSTEMSANDHEATPUMPSPART1VESSELSGENERALREQUIREMENTSPART2PIPINGGENERALREQUIREMENTSACCORDINGTOTHECEN/CENELECINTERNALREGULATIONS,THENATIONALSTANDARDSORGANIZATIONSOFTHEFOLLOWINGCOUNTRIESAREBOUNDTOIMPLEMENTTHISEUROPEANSTANDARDAUSTRIA,BELGIUM,BULGARIA,CROATIA,CYPRUS,CZECHREPUBLIC,DENMARK,ESTONIA,FINLAND,FRANCE,GERMANY,GREECE,HUNGARY,ICELAND,IRELAND,ITALY,LATVIA,LITHUANIA,LUXEMBOURG,MALTA,NETHERLANDS,NORWAY,POLAND,PORTUGAL,ROMANIA,SLOVAKIA,SLOVENIA,SPAIN,SWEDEN,SWITZERLANDANDUNITEDKINGDOMBSEN1427622007A12011LICENSEDCOPYUNIVERSITYOFAUCKLANDLIBRARY,UNIVERSITYOFAUCKLANDLIBRARY,VERSIONCORRECTASOF08/05/20121740,CTHEBRITISHSTANDARDSINSTITUTION2012EN1427622007A12011E4INTRODUCTIONTHISEUROPEANSTANDARDRECOGNISESTHEUNIQUENATUREOFPIPINGFORREFRIGERATINGSYSTEMSORHEATPUMPSANDISINTENDEDTOADDRESSTHESPECIFICNEEDSOFTHEREFRIGERATIONANDHEATPUMPINDUSTRYTHISEUROPEANSTANDARDSHOULDBEREADINCONJUNCTIONWITHTHEVARIOUSPARTSOFEN13480ANDEN1427612006A1“THEUNIQUENATUREOFAREFRIGERATINGSYSTEMISDEFINEDINTHEINTRODUCTIONOFEN1427612006A1“BSEN1427622007A12011LICENSEDCOPYUNIVERSITYOFAUCKLANDLIBRARY,UNIVERSITYOFAUCKLANDLIBRARY,VERSIONCORRECTASOF08/05/20121740,CTHEBRITISHSTANDARDSINSTITUTION2012EN1427622007A12011E51SCOPE11THISEUROPEANSTANDARDSPECIFIESTHEREQUIREMENTSFORMATERIAL,DESIGN,MANUFACTURING,TESTINGANDDOCUMENTATIONFORSTATIONARYPIPINGINTENDEDFORUSEINREFRIGERATINGSYSTEMS,HEATPUMPSANDSECONDARYCOOLINGANDHEATINGSYSTEMSTHESEREFRIGERATINGSYSTEMSANDHEATPUMPSYSTEMSAREREFERENCEDINTHISSTANDARDASREFRIGERATINGSYSTEMSASDEFINEDINEN378112THISEUROPEANSTANDARDAPPLIESTOPIPINGINCLUDINGWELDEDORBRAZEDATTACHMENTSUPTOANDINCLUDINGTHEFLANGES,SCREWED,WELDEDORBRAZEDCONNECTORSORTOTHEEDGETOBEWELDEDORBRAZEDATTHEFIRSTCIRCUMFERENTIALJOINTCONNECTINGPIPINGOROTHERELEMENTS13THISEUROPEANSTANDARDAPPLIESTOTHESELECTION,APPLICATIONANDINSTALLATIONOFSAFETYACCESSORIESINTENDEDTOPROTECTTHEPIPINGDURINGTHEVARIOUSPHASESOFTHEREFRIGERATIONCYCLE14THISEUROPEANSTANDARDAPPLIESTOTHEFOLLOWINGPIPINGHEATEXCHANGERCONSISTINGOFPIPINGFORTHEPURPOSEOFCOOLINGORHEATINGAIRWHEREPIPINGASPECTSAREPREDOMINANTPIPINGINCORPORATEDINTOANASSEMBLYEGSELFCONTAINEDSYSTEM,CONDENSINGUNITFIELDERECTEDPIPING15THISEUROPEANSTANDARDAPPLIESTOPIPINGWITHANINTERNALPRESSUREDOWNTO1BAR,TOACCOUNTFORTHEEVACUATIONOFTHEPIPINGPRIORTOCHARGINGWITHREFRIGERANT16THISEUROPEANSTANDARDAPPLIESTOBOTHTHEMECHANICALLOADINGCONDITIONSANDTHERMALCONDITIONSASDEFINEDINEN134803ASSOCIATEDWITHREFRIGERATINGSYSTEMSITAPPLIESTOPIPINGSUBJECTTOTHEMAXIMUMALLOWABLETEMPERATURESFORWHICHNOMINALDESIGNSTRESSESFORMATERIALSAREDERIVEDUSINGEN1427612006A1“ORASSPECIFIEDINTHISEUROPEANSTANDARDINADDITIONPIPINGDESIGNEDTOTHISSTANDARDNEEDSTOHAVEAMAXIMUMDESIGNTEMPERATURENOTEXCEEDING200CANDAMAXIMUMDESIGNPRESSURENOTEXCEEDING64BAROUTSIDEOFTHESELIMITS,EN13480SHOULDBEUSEDFORTHEDESIGNCONSTRUCTIONANDINSPECTIONOFTHEPIPINGUNDERTHESECIRCUMSTANCESTHEUNIQUENATUREOFAREFRIGERATINGPLANT,ASINDICATEDINTHEINTRODUCTIONOFEN1427612006A1“,NEEDSALSOTOBETAKENINTOACCOUNT17THISEUROPEANSTANDARDAPPLIESTOPIPINGWHERETHEMAINPRESSUREBEARINGPARTSAREMANUFACTUREDFROMMETALLICDUCTILEMATERIALSASDEFINEDINCLAUSE4ANDINEN1427612006A1“BSEN1427622007A12011LICENSEDCOPYUNIVERSITYOFAUCKLANDLIBRARY,UNIVERSITYOFAUCKLANDLIBRARY,VERSIONCORRECTASOF08/05/20121740,CTHEBRITISHSTANDARDSINSTITUTION2012EN1427622007A12011E62NORMATIVEREFERENCESTHEFOLLOWINGREFERENCEDDOCUMENTSAREINDISPENSABLEFORTHEAPPLICATIONOFTHISDOCUMENTFORDATEDREFERENCES,ONLYTHEEDITIONCITEDAPPLIESFORUNDATEDREFERENCES,THELATESTEDITIONOFTHEREFERENCEDDOCUMENTINCLUDINGANYAMENDMENTSAPPLIESEN37812008A12010,REFRIGERATINGSYSTEMSANDHEATPUMPSSAFETYANDENVIRONMENTALREQUIREMENTSPART1BASICREQUIREMENTS,DEFINITIONS,CLASSIFICATIONANDSELECTIONCRITERIAEN37822008A12009,REFRIGERATINGSYSTEMSANDHEATPUMPSSAFETYANDENVIRONMENTALREQUIREMENTSPART2DESIGN,CONSTRUCTION,TESTING,MARKINGANDDOCUMENTATIONEN37832008,REFRIGERATINGSYSTEMSANDHEATPUMPSSAFETYANDENVIRONMENTALREQUIREMENTSPART3INSTALLATIONSITEANDPERSONALPROTECTIONEN37842008,REFRIGERATINGSYSTEMSANDHEATPUMPSSAFETYANDENVIRONMENTALREQUIREMENTSPART4OPERATION,MAINTENANCE,REPAIRANDRECOVERY“EN57111997,NONDESTRUCTIVETESTINGPENETRANTTESTINGPART1GENERALPRINCIPLESEN58342002,NONDESTRUCTIVETESTINGULTRASONICEXAMINATIONPART4EXAMINATIONFORDISCONTINUITIESPERPENDICULARTOTHESURFACEEN76412004,PRESSUREEQUIPMENTTERMINOLOGYPART1PRESSURE,TEMPERATURE,VOLUME,NOMINALSIZEEN76422002,PRESSUREEQUIPMENTPART2QUANTITIES,SYMBOLSANDUNITSEN76432002,PRESSUREEQUIPMENTPART3DEFINITIONOFPARTIESINVOLVEDEN76442002,PRESSUREEQUIPMENTPART4ESTABLISHMENTOFTECHNICALDELIVERYCONDITIONSFORMETALLICMATERIALSEN76452002,PRESSUREEQUIPMENTPART5COMPLIANCEANDINSPECTIONDOCUMENTATIONOFMATERIALSEN9701997,NONDESTRUCTIVEEXAMINATIONOFFUSIONWELDSVISUALEXAMINATIONEN12891998,NONDESTRUCTIVEEXAMINATIONOFWELDSPENETRANTTESTINGOFWELDSACCEPTANCELEVELSEN14351997,NONDESTRUCTIVEEXAMINATIONOFWELDSRADIOGRAPHICEXAMINATIONOFWELDEDJOINTSEN16531997,COPPERANDCOPPERALLOYSPLATE,SHEETANDCIRCLESFORBOILERS,PRESSUREVESSELSANDHOTWATERSTORAGEUNITSEN17121997,NONDESTRUCTIVEEXAMINATIONOFWELDSULTRASONICEXAMINATIONOFWELDEDJOINTSACCEPTANCELEVELSEN17141997,NONDESTRUCTIVEEXAMINATIONOFWELDSULTRASONICEXAMINATIONOFWELDEDJOINTSEN102042004,METALLICPRODUCTSTYPESOFINSPECTIONDOCUMENTSEN1024692000,NONDESTRUCTIVETESTINGOFSTEELTUBESPART9AUTOMATICULTRASONICTESTINGOFTHEWELDSEAMOFSUBMERGEDARCWELDEDSTEELTUBESFORTHEDETECTIONOFLONGITUDINALAND/ORTRANSVERSEIMPERFECTIONSEN10246162000,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