1、Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 12 July 2004, Uncontrolled Copy, (c) BSIBRITISH STANDARD BS EN 1277:2003 Plastics piping systems Thermoplastics piping systems for buried non-pressure applications Test methods for leaktightness of elastomeric sealing ring typ
2、e joints The European Standard EN 1277:2003 has the status of a British Standard ICS 23.040.80 Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 12 July 2004, Uncontrolled Copy, (c) BSIBS EN 1277:2003 This British Standard was published under the authority of the Standards Po
3、licy and Strategy Committee on 21 April 2004 BSI 21 April 2004 ISBN 0 580 43669 1 National foreword This British Standard is the official English language version of EN 1277:2003. It supersedes BS EN 1277:1996 which is withdrawn. Clause 6(c) does not imply an additional deflection for those cases wh
4、ere the referring standard specifies a deflection. The UK participation in its preparation was entrusted by Technical Committee PRI/88, Plastic Piping Systems, to Subcommittee PRI/88/4, Pressure, which has the responsibility to: A list of organizations represented on this subcommittee can be obtaine
5、d 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 Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of
6、the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid e
7、nquirers 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 compr
8、ises a front cover, an inside front cover, the EN title page, pages 2 to 10, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments Licensed Copy: Wang Bin, ISO
9、/Exchange China Standards Information Centre, 12 July 2004, Uncontrolled Copy, (c) BSIEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN1277 December2003 ICS23.040.80 SupersedesEN1277:1996 Englishversion PlasticspipingsystemsThermoplasticspipingsystemsfor buriednonpressureapplicationsTestmethodsfor l
10、eaktightnessofelastomericsealingringtypejoints SystmesdecanalisationsenplastiquesSystmesde canalisationsthermoplastiquespourapplicationsenterres sanspressionMthodesdessaidtanchitdes assemblagesbaguedtanchitenlastomre KunststoffRohrleitungssystemeErdverlegte RohrleitungssystemeausThermoplastenfrdruck
11、lose AnwendungenPrfverfahrenfrdieDichtheitvon elastomerenDichtringverbindungen ThisEuropeanStandardwasapprovedbyCENon3March2003. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.U
12、ptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsown
13、languageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Slovakia,Spain,Sweden,Switzerlanda
14、ndUn ited Kingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2003CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN1277:2003E Licensed Copy: Wang Bin, ISO
15、/Exchange China Standards Information Centre, 12 July 2004, Uncontrolled Copy, (c) BSIEN1277:2003(E) 2 Foreword ThisEuropeanStandard(EN1277:2003)hasbeenpreparedbyTechnicalCommitteeCEN/TC155, “Plasticspipingsystemsandductingsystems“,thesecretariatofwhichisheldbyNEN. ThisEuropeanStandardshallbegiventh
16、estatusofanationalstandard,eitherbypublicationofanidentical textorbyendorsement,atthelatestbyJune2004,andconflictingnationalstandardsshallbewithdrawnat thelatestbyJune2004. AnnexAisnormative. ThisdocumentsupersedesEN1277:1996. Themodificationsare: Thedeflectionofthesocketisnowpermittedtobegreatertha
17、nspecifiedifbydeflectingthespigottothe specifiedamountthesocket,withoutapplyingloadtoit,isdeflectedtomorethanspecified.Thereason isthatexperiencewithtestinglargediameterpipesinaccordancewiththe1996versionhasshownthat forsomepipedesignsadeflectionof10%ofthespigotresultedinadeflectionlargerthan5%ofthe
18、 socketwithoutapplyinganyloadtoit.Thisisthemajorreasonfortherevision. Asupportfortheprofilesunderthedeflectiondevice,seeFigure2,arespecifiedincaseswherethereis ariskthattheprofilesaredeflectedtoomuchwhendeflectingthespigotorsocket. Figure4hasbeenaddedtoclarifythedescriptionofthedeflectiondevices. Th
19、eprocedurefordeterminingandapplyingthedeflectionhasbeendescribedinmoredetails,see6.2. Anumberofeditorialchangesincludingamorelogicorderofthedescriptionofthetestequipmentand testprocedurehavebeenintroduced. Thematerialdependentparametersand/orperformancerequirementsareincorporatedintheSystem Standard
20、(s)concerned. Thisstandardisoneofaseriesofstandardsontestmethods,whichsupportSystemStandardsforplastics pipingsystemsandductingsystems. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechR
21、epublic,Denmark, Finland,France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands, Norway,Portugal,Slovakia,Spain,Sweden,SwitzerlandandtheUnitedKingdom. Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 12 July 2004, Uncontrolled Copy, (c) BSIEN1277:20
22、03(E) 3 1Scope ThisEuropeanstandardspecifiesthreebasictestpressuresfordeterminingtheleaktightnessofelastomeric sealingringtypejointsforburiedthermoplasticsnonpressurepipingsystems. Unlessotherwisespecifiedinthereferringstandard,themethodspressuresusedarethefollowing: p 1 :internalnegativeairpressure
23、(partialvacuum); p 2 :alowinternalhydrostaticpressure; p 3 :ahigherinternalhydrostaticpressure. Italsodescribesfourtestconditionsunderwhichthetestcanbeexecuted,asfollows: A: withoutanyadditionaldiametricorangulardeflection; B: withdiametricdeflection; C: withangulardeflection; D: withsimultaneousang
24、ularanddiametricdeflection. Theseconditionscanbeappliedindividuallyorincombination.Theapplicableselectionofthemethod(s) andthecondition(s)shouldbespecifiedinthereferringstandard. 2Principle Atestpieceassembledfrompipesand/orfittingsissubjectedtoaspecificinitialinternalnegativeair pressure, p 1 follo
25、wedbyalowspecificinitialinternalhydrostaticpressure, p 2 andahigherinternal hydrostaticpressure, p 3 . Duringtestingthejointmaybesubjectedtodiametricand/orangulardeflection(s).Thereferringproduct standardshallspecifywhichofthetestpressuresanddeflectionconditionshavetobecarriedout. Eachpressureismain
26、tainedforaspecificperiodduringwhichthejointismonitoredforleakage(see clause6). NOTE1 Itisassumedthatthefollowingtestparametersaresetbythestandardmakingreferencetothisstandard: a) thetestpressure(s), p 1 seeitemd)of6.1, p 2 seeitemf)of6.1and p 3 seeitemg)of6.1,asapplicable,andthe percentageoflossofpa
27、rtialvacuumseeitemd)of6.1; b) therequireddiametricand/orangulardeflectionsandtheircombinationwitheachotherand/orthetestpressure(s) NOTE2 AsaconsequenceoftherevisionofEN1277:1996amodificationoftestparametersgiveninreferring EuropeanStandardsonthermoplasticsundergrounddrainageandseweragepipespublished
28、beforethisEuropean Standardmayberequired(seeannexA). 3Apparatus 3.1General Theapparatusshallconsistofajigoranyotherarrangementcapableof: a) applyingthespecifieddiametricand/orangulardeflection; b) applyingthespecifiedtestpressure(s),positiveornegative; c) maintainingthetestassemblyintherequiredposit
29、ionthroughoutthetest; d) resistingtheforcesresultingfromthemassofthewaterinthetestassemblyandfromtheapplied hydrostatictestpressure(s)duringthetestperiod. Theapparatusshallnototherwisesupportthejointagainsttheinternaltestpressure. Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Cen
30、tre, 12 July 2004, Uncontrolled Copy, (c) BSIEN1277:2003(E) 4 Atypicalarrangement,allowingangularanddiametricdeflection,isshowninFigure1. 3.2Apparatus Theapparatusshallincludethefollowingitemswhichallshallbecapableofresistingtheforcesand pressuresgeneratedduringthetest. 3.2.1 Endsealingdevices, havi
31、ngasizeandusingasealingmethodappropriatetosealthenonjointed endsofthetestassembly.Thedevicesshallberestrainedinamannerthatdoesnotexertlongitudinal forcesonthejointatpositivepressures; 3.2.2 Hydrostaticpressuresource ,connectedtooneofthesealingdevices,ortothetestpiece,and capableofapplyingandmaintain
32、ingthespecifiedpressureseeitemsf)andg)of6.1; 3.2.3 Negativeairpressuresource, connectedtooneofthesealingdevices,ortothetestpiece,and capableofapplyingandmaintainingthespecifiedinternalnegativeairpressureforthespecifiedtime.See itemd)of6.1; 3.2.4 Arrangement,capableofventingairfromtheassembly; 3.2.5
33、Pressuremeasuringdevices ,capableofcheckingconformitytothespecifiedtestpressure(see itemd),f)andg)of6.1). Whentestingwithdiametricdeflectionisrequiredthefollowingitemsshallalsobeincluded: 3.2.6 Mechanicalorhydraulicdevice ,capableofapplyingthenecessarydiametricdeflectiontothe spigotseeitemb)of6.1and
34、actingonabeamwhichisfreetomoveintheverticalplanesquaretotheaxis ofthepipe.Forpipeswithadiameterequaltoorgreaterthan400mm,eachbeamcanbeellipticallyshaped tosuittheexpectedshapeofthepipewhendeflectedasrequired,seeFigure4.Thelengthofthebeamor thecurvedpartofthebeamshallbegreaterthanthecontactareawithth
35、edeflectedspigot. Thewidth, b 1 ,seeFigure1,shalldependupontheexternaldiameter, d e ,ofthepipeasfollows: b 1 =100mmfor d e 710mm; b 1 =150mmfor710mm1000mm. 3.2.7 Mechanicalorhydraulicdevice ,capableofapplyingthenecessarydiametricdeflectiontothe socketseeitemb)of6.1andactingonabeamwhichisfreetomovein
36、theverticalplanesquaretotheaxis ofthesocket. Thelengthofthebeamorthecurvedpartofthebeamshallbegreaterthanthecontactareawiththe deflectedsocket. Forpipeswithadiameterequaltoorgreaterthan400mm,eachbeammaybeellipticallyshapedtosuitthe expectedshapeofthesocketwhendeflectedasrequired,seeFigure4; Thewidth
37、, b 2 ,shalldependupontheexternaldiameter, d e ,ofthepipeasfollows: b 2 =30mmfor d e 110mm; b 2 =40mmfor110mm315mm. Whenthereisariskthatthestiffeningelements(profiles)ofastructuredwallpipeorsocketwilldeflectmore than0,1timestheprofileheight,theclampsshallbemodifiedsotheywillcomeintocontactwiththepip
38、e wallbetweentheprofileswhentheprofileisdeflectedtobetween0,9timesand0,95timestheprofileheight, (seeFigure2). Suchmodificationsshallbemadefromwoodorlessflexiblematerials. Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 12 July 2004, Uncontrolled Copy, (c) BSIEN1277:2003(E)
39、5 Key G Vacuumorpressuregauge E Ellipticalbeamwhenapplicable W Adjustablesupport P Pipeorfittingwithspigotend R Pipeorfittingwithsocket S Socketsupport V Connectiontopressuresource a tot Angulardeflectionapplied b 1 ,b 2 Widthofclamp(see3.2.6and3.2.7) L Lengthofspigotendedpipeorfitting, where L d e
40、or L 1000,whicheveristhegreater,inmillimetres L 1 Distancebetweensocketmouthandclamp Figure1Typicalarrangementforapplyingdiametricdistortionandangulardeflection Key 1 Modifiedloadingplate h p Constructionheight H p Profileheightoftheloadingplate;0,9 h p H p 0,95 h p Figure2Exampleofmodifiedloadingpl
41、ate 4 Testpieces Thetestpieceshallcompriseanassemblyof(a)pipesection(s)and/orfitting(s)includingatleastone elastomericsealingringjoint. Thejointtobetestedshallbeassembledinaccordancewiththemanufacturersinstructionswhereavailable. ThelengthofthetestpiecesinpipeformshallbeasspecifiedinFigure1. License
42、d Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 12 July 2004, Uncontrolled Copy, (c) BSIEN1277:2003(E) 6 Thesametestassemblyshallbeusedfortheentirespecifiedtestregime. NOTE Toreducethevolumeofwaterneededasealedpipeormandrelcanbelocatedwithinthetestpieceprovided itis100%tighttothet
43、estpressuresapplied,anditisnotofashapethatmayprovidesupportagainstpossible deformationduringthetest. Whenafittingoranyotherancillarycomponentistobetested,theappropriateendofthetestpieceshown inFigure1istobereplacedbythatcomponent. Thecomponentisfixedtothetestrigandpluggedinitsopenend(s)asappropriateforitsdesign. 5 Testtemperature Whentestingwithinternalhydrostaticpressureusingwaterthetesttemperatureshallbe(199)C. Whentestingwithinternalpartialvacuumthetesttemperatureshallbeintherangeof(235)Candthe temper
