BS EN 13941-2009 design and installation of preins

BSEN13941:2009ICS91.140.10NOCOPYINGWITHOUTBSIPERMISSIONEXCEPTASPERMITTEDBYCOPYRIGHTLAWBRITISHSTANDARDDesignandinstallationofpreinsulatedbondedpipesystemsfordistrictheatingThisBritishStandardwaspublishedundertheauthorityoftheStandardsPolicyandStrategyCommitteeon31July2009©BSI2009ISBN9780580639814Amendments/corrigendaissuedsincepublicationDateCommentsBSEN13941:2009NationalforewordThisBritishStandardistheUKimplementationofEN13941:2009.ItsupersedesBSEN13941:2003whichiswithdrawn.TheUKparticipationinitspreparationwasentrustedtoTechnicalCommitteeRHE/9,Insulatedundergroundpipelines.Alistoforganizationsrepresentedonthiscommitteecanbeobtainedonrequesttoitssecretary.Thispublicationdoesnotpurporttoincludeallthenecessaryprovisionsofacontract.Usersareresponsibleforitscorrectapplication.CompliancewithaBritishStandardcannotconferimmunityfromlegalobligations.BSEN13941:2009EUROPEANSTANDARDNORMEEUROPÉENNEEUROPÄISCHENORMEN13941July2009ICS91.140.10SupersedesEN13941:2003EnglishVersionDesignandinstallationofpreinsulatedbondedpipesystemsfordistrictheatingConceptionetinstallationdessystèmesbloquésdetuyauxpréisoléspourlesréseauxenterrésd'eauchaudeAuslegungundInstallationvonwerkmäßiggedämmtenVerbundmantelrohrenfürdieFernwärmeThisEuropeanStandardwasapprovedbyCENon23May2009.CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEuropeanStandardthestatusofanationalstandardwithoutanyalteration.Up-to-datelistsandbibliographicalreferencesconcerningsuchnationalstandardsmaybeobtainedonapplicationtotheCENManagementCentreortoanyCENmember.ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).AversioninanyotherlanguagemadebytranslationundertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheCENManagementCentrehasthesamestatusastheofficialversions.CENmembersarethenationalstandardsbodiesofAustria,Belgium,Bulgaria,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,SwitzerlandandUnitedKingdom.EUROPEANCOMMITTEEFORSTANDARDIZATIONCOMITÉEUROPÉENDENORMALISATIONEUROPÄISCHESKOMITEEFÜRNORMUNGManagementCentre:AvenueMarnix17,B-1000Brussels©2009CENAllrightsofexploitationinanyformandbyanymeansreservedworldwideforCENnationalMembers.Ref.No.EN13941:2009:EBSEN13941:2009EN13941:2009(E)2ContentsPageForeword.............................................................................................................................................................5Introduction.........................................................................................................................................................61Scope......................................................................................................................................................82Normativereferences............................................................................................................................83Termsanddefinitions,unitsandsymbols.......................................................................................103.1Termsanddefinitions.........................................................................................................................103.2Unitsandsymbols..............................................................................................................................144Generalconsiderationsforsystemdesign......................................................................................174.1Generalrequirements.........................................................................................................................174.2Servicelife............................................................................................................................................174.3Preliminaryinvestigations..................................................................................................................174.4Determinationofprojectclass...........................................................................................................184.5Designdocumentation........................................................................................................................205Componentsandmaterials................................................................................................................235.1Basicrequirements.............................................................................................................................235.2Steelpipecomponents.......................................................................................................................245.3Polyurethanefoaminsulation............................................................................................................275.4PEcasing...............................................................................................................