BS EN ISO 13846-2001 Plastics piping systems - End-load-bearing and non-end-load bearing assemblies and joints for thermoplastics pressure piping - Test method for long-term leakti.pdf

1、BRITISH STANDARD BS EN ISO 13846:2001 BS 2782-11: Method 1111F:2001 Plastics piping systems End-load-bearing and non-end-load bearing assemblies and joints for thermoplastics pressure piping Test method for long-term leaktightness under internal water pressure The European Standard EN ISO 13846:2000

2、 has the status of a British Standard ICS 23.040.60 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS EN ISO 13846:2001 This British Standard, having been prepared under the direction of the Sector Committee for Materials and Chemicals, was published under the authority of the

3、 Standards Committee and comes into effect on 15 May 2001 BSI 05-2001 ISBN 0 580 37400 9 National foreword This British Standard is the official English language version of EN ISO 13846:2000. It is identical with ISO 13846:2000. The UK participation in its preparation was entrusted by Technical Comm

4、ittee PRI/88, Plastics piping systems and components, to Subcommittee PRI/88/4, Methods of test for plastics piping systems and components, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. It is incorporated into B

5、S 2782-11, Methods of testing plastics Part 11: Thermoplastics pipes, fittings and valves, as Method 1111F:2001, for association with related test methods for plastics materials and plastics piping components. No existing British Standard is superseded by this British Standard. Cross-references Atte

6、ntion is drawn to the fact that CEN and CENELEC Standards normally include an annex which lists normative references to international publications with their corresponding European publications. The British Standards which implement these international or European publications may be found in the BS

7、I Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. Warning This British Standard, which is identical with EN ISO 13846:2000, does not necessarily detail all the precautions necess

8、ary to meet the requirements of the Health and Safety at Work etc. Act 1974 and subsequent legislation. Attention should be paid to any appropriate safety precautions and the method should be operated only by trained personnel. A British Standard does not purport to include all the necessary provisi

9、ons of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries o

10、n 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 comprises a front cover, an inside front cover, the EN ISO title page, pages 2 to 9 and a back cove

11、r. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM ENISO13846 October2000 ICS23.040.60 Englishversion PlasticspipingsystemsEndloadbearingandnonendlo

12、ad bearingassembliesandjointsforthermoplasticspressurepiping Testmethodforlongtermleaktightnessunderinternalwater pressure(ISO13846:2000) SystmesdecanalisationsenplastiquesAssemblageset jonctionsavecetsanseffetdefondpourcanalisations thermoplastiquesavecpressionMthodedessaipour vrifierltanchitlongte

13、rmesousunepressiondeau interne(ISO13846:2000) KunststoffRohrleitungssystemeZugfesteundnicht zugfesteRohrverbindungenundBauteilkombinationenfr thermoplastischeDruckrohrleitungenPrfverfahrenfrdie LangzeitdichtheitunterWasserinnendruck(ISO 13846:2000) ThisEuropeanStandardwasapprovedbyCENon24April1999.

14、CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCE

15、Nmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria

16、,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Iceland,Ireland,Italy,Luxembourg,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Bruss

17、els 2000CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.ENISO13846:2000EPage2 ENISO13846:2000 Contents Page Foreword 3 1Scope . 4 2Principle . 4 3Apparatus 4 3.1Ambienttemperatures. . 4 3.2Elevatedtemperatures . 4 3.3Pressurecontroldevice . 4 3.4Suppo

18、rt 5 3.5Compensatingdevice 5 4Testpiece . . 6 4.1Preparation 6 4.2Number . . 7 5Procedure 7 5.1Preparation 7 5.2Conditioning. 7 5.3Pressurecontrol. 7 5.4Examinationofthetestassembly . . 7 5.5Examinationatthemidpointandattheendofthetestperiod 8 5.6Rupture 8 6Testreport . 8 Bibliography. 9Page3 ENISO1

19、3846:2000 Foreword ThetextofENISO13846:2000hasbeenpreparedbyTechnicalCommitteeCEN/TC155 “Plastics pipingsystemsandductingsystems“,thesecretariatofwhichisheldbyNNI ,incollaborationwith TechnicalCommitteeISO/TC138 “Plasticspipes,fittingsandvalvesforthetransportoffluids“. ThisEuropeanStandardshallbegiv

20、enthestatusofanationalstandard,eitherbypublicationofan identicaltextorbyendorsement,atthelatestbyApril2001,andconflictingnationalstandardsshallbe withdrawnatthelatestbyApril2001 . AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthe followingcountriesareboundtoimplemen

21、tthisEuropeanStandard:Austria,Belgium,CzechRepublic, Denmark,Finland,France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Netherlands, Norway,Portugal,Spain,Sweden,SwitzerlandandtheUnitedKingdom. Thematerialdependentparametersand/orperformancerequirementsareincorporatedintheSystem Standard(s)conce

22、rned. ThisstandardisoneofaseriesofstandardsontestmethodswhichsupportSystemStandardsfor plasticspipingsystemsandductingsystems.Page4 ENISO13846:2000 1 Scope Thisstandardspecifiesatestmethodforthelongtermleaktightnessofendloadbearingandnonend loadbearingmechanicallyjointedassembliesandjointsbetweenfit

23、tings,ancillaries,valvesand thermoplasticspressurepipes,includingintegralpipejoints. Thismethodisapplicabletojointswheresimilarordifferentmaterialsareconnected,wheresealing mechanismsincludeelastomericsealingringsoradhesives. Thismethodisapplicableinadditiontothehydrostaticpressuretestsformaterialsa

24、ndcomponents. 2 Principle Thetestsimulatesexpansionofthejointareaduetocreep.Thisisrelatedtothepermissibleworking conditionsfor50yearsandbasedonthepropertiesofthecomponentsassembled. Theleaktightnessofthejoint(s)istestedasanassemblycomprisingeither: a) atleastonefittingjoinedtopipes;or b) anancillary

25、componentoravalvejoinedtopipes;or c) apipetopipejoint. Thetestiscarriedoutforatleast1000hatambienttemperatureandatthemaximumallowedworking temperatureforthepipingsystemforwhichtheassemblyorjointisintendedtobeused. Thetestpieceanditsjoint(s)aresubjectedtoaspecifiedinternalhydrostaticwaterpressureata

26、specifiedtemperaturefortheperiodoftime(1000hormore)specifiedinthereferringstandard. Additionalreinforcementofthejointareaisnotpermittedforthistest. NOTE Itisassumedthatthefollowingtestparametersaresetbythestandardmakingreferenceto thisstandard: a) theminimumtestperiodunderpressure,i.e.1000hormore(se

27、eclause2and5.4); b) thefreelength, L,ofthepipesectionsundertest(see4.1); c) thenumberoftestpieces(see4.2); d) thetesttemperature(e.g.ambientormaximumallowedworkingtemperature)(see5.2); e) thetestpressure(see5.3). 3 Apparatus 3.1 Ambienttemperatures Fortestsatambienttemperatures(see5.2),atestroomorwa

28、terbath,capableofbeingmaintainedat atemperaturetowithin2C. 3.2 Elevatedtemperatures Fortestsatelevatedtemperatures,anairchamberorwaterbath,capableofbeingmaintainedatthe specifiedtesttemperaturetowithin () 3 1 + - C. 3.3 Pressurecontroldevice Apressurecontroldeviceconnectedtothetestassemblyandcapable

29、ofapplyingaconstant hydrostaticpressuretowithin() 2 1 + - %.Page5 ENISO13846:2000 3.4 Support Supportforendloadbearingassembliesandjointssuchthattheassembliesandjointsshallbe subjectedtotheaxialforcesgeneratedduringthetestandsuchthatthesupportshallnotprovideany axialrestraint.(ForbibliographyseeEN71

30、5 1 .)Anexampleofsolventcementtypetestassemblyis showninfigure1. 3.5 Compensatingdevice Acompensatingdevicefornonendloadbearingassembliesandjoints,capableofsustainingtheaxial forcesgeneratedbytheinternalwaterpressure,whilstmaintainingtheaxialalignmentofthejoint assembly.(ForbibliographyseeEN714 2 .)

31、Connectingrodsorexternalframesbetweennonendload bearingsealingdevicestokeeptheminplaceasnecessarytopreventanyseparation.Examplesof testassembliesareshowninfigures2and3. NOTE Precautionscanbenecessarytomaintainthealignmentofthejointassemblies,particularlyfor removalofthetestassembliesfromthetestbath.

32、 Figure1 ExampleofsolventcementtypetestassemblyPage6 ENISO13846:2000 Figure2 Exampleofelastomericsealingringtypetestassembly Figure3 Exampleofintegraljointtypetestassembly 4 Testpiece 4.1 Preparation Thetestpieceshallcompriseanassemblycontainingatleastonepipesamplejoinedtoasocketofa fittingortoasock

33、etedpipeorjoinedwithanassembledfinishedproduct(suchasavalveorunion). Additionalcomponentsmaybeaddedtothetestassemblyasrequired. Componentsofthesamenominalpressure,PN,orthesamepipeseriesS,shallbeusedforthe assembly.Page7 ENISO13846:2000 Therelevantdimensionsofthejointcomponentsshallbemeasuredandrecor

34、ded,i.e.themean outsidediameterandoutofroundnessofanyspigotorpipejointarea,themeaninsidediameterand outofroundnessofanysocketandtherelevantdimensionsofanyintermediatecomponent(seenote attheendofthisclause). Theminimumlengthofthepipesectionshallbesuchthatitsfreelength, L,betweentheassembly undertesta

35、ndthejointortheendclosure(plugorcap)shallbeasspecifiedinthereferringstandard. NOTE Ifthefreelengthisnotspecifiedinthereferringstandard,itshouldbenotlessthanthe nominaloutsidediameterofthepipe,withaminimumof150mm. AllcomponentsshallconformtotheappropriatepartoftheapplicableSystemStandard.Inadditionth

36、e elastomericsealingringsshallconformtothemanufacturersspecifications. Theassemblyshallbecarriedoutinaccordancewiththemanufacturersinstructions. Fornonendloadbearingjointsconnectingrodsorexternalframesmaybeusedasnecessaryto preventanyseparation(see3.5). NOTE Forthistestcomponentsshouldbeselectedwhic

37、hareasnearaspossibletotheextremesof theirrespectivetolerancebandswhichprovidethemostseveretestconditions,e.g.forelastomeric sealingringjointsthesocketandthediameteroftheringgroovehousingshouldbeatorasnearas possibletotheirmaximumvalue,thespigotofthepipeorfittingshouldbeatorasnearaspossibletothe mini

38、mumvalue,andthesealingringshouldbeatorasnearaspossibletotheminimumcrosssection specifiedbythemanufacturer. 4.2 Number Thenumberoftestpiececomponentsand/orjointstestedshallbeasspecifiedinthereferring standard. 5 Procedure WARNINGAllnecessaryprecautionsshouldbetakenwhentestingusingcomponentsunderpress

39、ure. 5.1 Preparation Fillthetestassemblywithwater.Setupthetestassembly,withoutanydeformation,intheapparatus appropriatetothetypeofjointandadjustthepipesection(s)inlinewiththeaxis(axes)ofthe socket(s). 5.2 Conditioning Conditionthetestassemblyinthetestroomorconditioningchamberforatleast3 hfortest tem

40、peraturesmorethan25Corforatleast20minfortesttemperaturesequaltoorlessthan25C.If thetesttemperatureisspecifiedas“ambienttemperature“,carryouttheconditioningatany temperaturebetween15Cand25C.Duringsubsequenttestinginaccordancewith5.3to5.5 inclusive,maintainthetesttemperatureconstanttowithin2Candwithin

41、therangeof15C to25C. 5.3 Pressurecontrol Connectthetestassemblytothepressurecontroldevice.Evacuateallairfromthetestassemblyand withintheperiod30sto1minapplythetestpressureasspecifiedinthereferringstandard. Recordthetimewhenthetestpressureisachievedasthecommencementofthetestperiod. Inspecttheassembly

42、foranysignsofleakageandreporttheresult. 5.4 Examinationofthetestassembly Whenrequired(see5.5),inspectthetestassembly,asappropriate,asfollows. a) Ifthetestiscarriedoutinair,thoroughlydrythewholeoutsidesurfaceofthetestpieceand examineitforleakage.Page8 ENISO13846:2000 b) Ifthetestiscarriedoutinwater,r

43、emovethetestassemblyfromthetestbath,drythesurface ofthetestpiece,examineitforleakageandifleakageisnotobserved,returnthetest assemblytothebathassoonaspossible. 5.5 Examinationatthemidpointandattheendofthetestperiod Repeattheexaminationofthetestassemblyforleakage(see5.4)atthemidpointandattheendof thetestperiod,whichshallbeatleast1000h,unlessalongerminimumperiodisspecifiedinthe referringstandardorpriorfailureoftheassemblyoccursinamannerwhichdoesnotallowcontinuation inaccordancewith5.6. 5.6 Rupture Ifruptureoccursinthepipesectionbetweenthejointsunder