1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 1444:2001 The Europ
2、ean Standard EN 1444:2000 has the status of a British Standard ICS 23.040.50 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Fibre-cement pipelines Guide for laying and on-site work practicesThis British Standard, having been prepared under the direction of the Sector Committe
3、e for Building and Civil Engineering, was published under the authority of the Standards Committee and comes into effect on 15 February 2001 BSI 02-2001 ISBN 0 580 36913 7 BS EN 1444:2001 Amendments issued since publication Amd. No. Date Comments National foreword This British Standard is the offici
4、al English language version of EN 1444:2000. The UK participation in its preparation was entrusted by Technical Committee B/504, Water supply, to Subcommittee B/504/6, Fibre-cement pipes, which has the responsibility to: aid enquirers to understand the text; present to the responsible European commi
5、ttee 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. A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-re
6、ferences 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 Index”, or by using the “Find” facility of the BSI Standards Electronic Ca
7、talogue. 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 itself confer immunity from legal obligations. Summary of pages This document c
8、omprises a front cover, an inside front cover, the EN title page, pages 2 to 39 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued.EUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN1444 December2000 ICS23.040.50 Englishversion Fibrecement
9、pipelinesGuideforlayingandonsitework practices ConduitesenfibrescimentGuidepourlaposeetletravail surchantier FaserzementRohrleitungenHinweisefrdieVerlegung undfrdiebauseitigeBearbeitung ThisEuropeanStandardwasapprovedbyCENon27November2000. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulati
10、onswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(E
11、nglish,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece
12、, Iceland,Ireland,Italy,Luxembourg,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2000CEN Allrightsofexploitationinanyformandbyanymeansres
13、erved worldwideforCENnationalMembers. Ref.No.EN1444:2000EPage2 EN1444:2000 Contents Page Foreword4 Introduction .5 1 Scope 6 2 Normativereferences 6 3 Termsanddefinitions. .6 3.1 Pressures6 3.2 System 8 3.3 Components .10 3.4 Diameters12 3.5 Installation 12 3.6 Hydraulicdesign 13 3.7 Structuraldesig
14、n . 13 4 Generalrequirements 14 4.1 Qualifications .14 4.2 Rulesfortheexecutionofconstructionwork 14 4.3 Healthandsafety . 14 5 Transport,handlingandstorage. .15 5.1 Generalrecommendations. .15 5.2 Offloading. .15 5.3 Stackingofpipes . 15 5.4 Storageofjointsandfittings 16 6 Stringingout. 16 7 Typeso
15、fbeddingsandembedments 16 7.1 BeddingtypeAisthegeneralrecommendedwayforlayingfibrecementpipes 16 7.2 BeddingtypeB .17 7.3 BeddingtypeCisrecommendedinlayingconditionwhichrequirespecialdesign consideration18 8 Excavationandpreparationofthetrench .19 8.1 Generalrecommendations. .19 8.2 Depthofcover 19
16、8.3 Distancesfromundergroundinstallation . 19 8.4 Trenchwidth .19 8.5 Trenchdepth 19 8.6 Preparationoftrenchbottom .20 9 Prelayinginspectionofcomponents,loweringpipes,jointsandfittingsintothetrench20 9.1 Generalrecommendations. .20 9.2 Loweringbyhand 21 9.3 Loweringwithropes . .21 9.4 Loweringwithme
17、chanicalequipment .21 10 Pipelaying 21 10.1 Generalrecommendations 21 10.2 Speciallayingconditions 22 11 Jointing .23 11.1 Generalrequirements. .23 11.2 Unrestrainedjoints 24 11.3 Restrainedjoints 24 11.4 Lubrificantforjoints . .24 12 Anchorages 24 13 Houseserviceconnections 24Page3 EN1444:2000 13.1
18、 Directconnection .24 13.2 Indirectconnection 25 14 Embedmentandbackfilling 25 14.1 Partialbackfilling .25 14.2 Backfillingafterpressuretesting. 25 15 Workingprocessesandrecommendedtools .25 16 Toolspecification . .26 16.1 Generalrecommendations .26 16.2 Lathecutter,lathe,holecutter . 27 16.3 Jigsaw
19、 29 16.4 Lowspeedcircularsaw . .29 16.5 Chaincutter . .30 16.6 Abrasivediscs. .30 17 Dustextractionequipment .31 17.1 Characteristics.31 17.2 Recommendations.31 17.3 Cleaninganddisposalofthewaste. 32 AnnexA(informative) Adeviations .33Page4 EN1444:2000 Foreword ThisEuropeanStandardhasbeenpreparedbyT
20、echnicalCommitteeCEN/TC164“Watersupply“,thesecretariat ofwhichisheldbyAFNOR. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidenticaltextor byendorsement,atthelatestbyJune2001,andconflictingnationalstandardsshallbewithdrawnatthelatestby June2001. AccordingtotheCE
21、N/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark,Finland, France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Netherlands,Norway,Portugal,Spain,Sweden, SwitzerlandandtheUnitedKingdom
22、. AnnexAisinformative.Page5 EN1444:2000 Introduction Inrespectofpotentialadverseeffectsonthequalityofwaterintendedforhumanconsumption,causedbythe productcoveredbythisstandard: 1) thisstandardprovidesnoinformationastowhethertheproductmaybeusedwithoutrestrictioninanyofthe MemberStatesoftheEUorEFTA; 2)
23、 itshouldbenotedthat,whileawaitingtheadoptionofverifiableEuropeancriteria,existingnationalregulations concerningtheuseand/orthecharacteristicsofthisproductremaininforce.Page6 EN1444:2000 1Scope ThisdraftEuropeanStandard,appliestobothtypesoffibrecementpipesATandNTasdefinedinEN512:1994, givesinstallat
24、ionrecommendationsforthispipelinesinaboveorbelowgroundsituations.Itcomplementsthe generalprinciplesforalltypesofwatersupplysystemsspecifiedinEN805:2000,“WatersupplyRequirementsfor systemsandcomponentsoutsidebuildings”,andshouldbeusedinconjunctionwiththatstandard. Thisstandardgivesguidanceinonsitewor
25、kingmethodsandintheselectionanduseofapprovedtoolsforcutting andmachiningfibrecementpipes. Thisstandarddoesnotcoverthefollowing: a) installationbythrustboringandpipejackingmethodswhichrequiretheuseofhighlyspecializedtechniques; b) problemscausedbytheuseofspecialinstallationsprocedures(e.g.removalofpi
26、lesheetinginverydeep trenches,etc.). 2 Normativereferences ThisEuropeanStandardincorporatesbydatedorundatedreference,provisionsfromotherpublications.These normativereferencesarecitedattheappropriateplacesinthetextandthepublicationsarelistedhereafter.For datedreferences,subsequentamendmentstoorrevisi
27、onsofanyofthesepublicationsapplytothisEuropean Standardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreferencesthelatesteditionofthe publicationreferredtoapplies(includingamendments). EN512:1994, FibrecementproductsPressurepipesandjoints . EN805:2000, WatersupplyRequirementsforsystemsandco
28、mponentsoutsidebuildings. EN12951, Structuraldesignofburiedpipelinesundervariousconditionsofloading Part1:Generalrequirements. ISO2785,Directivesforselectionofasbestoscementpipessubjecttoexternalloadswithorwithoutinternal pressure. 3 Termsanddefinitions ForthepurposesofthisEuropeanStandard,thefollow
29、ingtermsanddefinitionsapply: 3.1Pressures ForthedesignationofpressuresinEnglish,FrenchandGermanseetable1andEN805:2000annexA.Page7 EN1444:2000 Table1DesignationofpressuresinEnglish,French,German Abbreviation a English French German DP designpressure pressiondecalculen regimepermanent Systembetriebsdr
30、uck MDP maximumdesign pressure pressionmaximalede calcul hchster Systembetriebsdruck System STP systemtest pressure pressiondpreuvedu rseau Systemprfdruck related PFA allowable operating pressure pressionde fonctionnement admissible zulssiger Bauteilbetriebsdruck PMA allowable maximum operating pres
31、sure pressionmaximale admissible hchsterzulssiger Bauteilbetriebsdruck Component PEA allowablesite testpressure pressiondpreuve admissiblesurchantier ZulssigerBauteilprfdruck aufderBaustelle related OP operating pressure pressionde fonctionnement Betriebsdruck System SP servicepressure pressiondeser
32、vice Versorgungsdruck related a Validforalllanguageversions. 3.1.1 allowablemaximumoperatingpressure(PMA) maximumpressureoccuringfromtimetotime,includingsurge,thatacomponentiscapableofwithstandingin service 3.1.2 allowableoperatingpressure(PFA) maximumhydrostaticpressurethatacomponentiscapableofwith
33、standingcontinuouslyinservice 3.1.3 allowablesitetestpressure(PEA) maximumhydrostaticpressurethatanewlyinstalledcomponentiscapableofwithstandingforarelativelyshort duration,inordertoensuretheintegrityandtightnessofthepipeline 3.1.4 designpressure(DP) maximumoperatingpressureofthesystemorofthepressur
34、ezonefixedbythedesignerconsideringfuture developmentsbutexcludingsurge 3.1.5 maximumdesignpressure(MDP) maximumoperatingpressureofthesystemorofthepressurezonefixedbythedesignerconsideringfuture developmentsandincludingsurge,where: MDPisdesignedMDPawhenthereisafixedallowanceforsurge; MDPisdesignedMDP
35、cwhenthesurgeiscalculated. 3.1.6 operatingpressure(OP) internalpressurewhichoccursataparticulartimeandataparticularpointinthewatersupplysystemPage8 EN1444:2000 3.1.7 pressurezones areasofpressurerangeswithinawatersupplysystems 3.1.8 servicepressure(SP) internalpressuredeliveredatthepointofconnection
36、totheconsumersinstallationatzeroflowintheservicepipe 3.1.9 surge rapidfluctuationsofpressurecausedbyflowalterationsovershortperiodsoftime 3.1.10 systemtestpressure(STP) hydrostaticpressureappliedtoanewlylaidpipelineinordertoensureitsintegrityandtightness 3.2System 3.2.1 gravitysystem systemwhereflow
37、and/orpressurearecausedbytheforceofgravity.Therearetwokindsofsuchsystems: pressurizedgravitysystem,wherethepipelineoperatesfull; nonpressurizedgravitysystem,wherethepipelineoperatespartiallyfull. 3.2.2 localmain watermainwhichconnectsprincipalmain(s)withservicepipes 3.2.3 potablewater waterintendedf
38、orhumanconsumptionasdefinedbytherelevantnationalauthorities 3.2.4 principalmain watermainservingasaprincipaldistributorwithinthesupplyarea,normallywithoutdirectconsumerconnections 3.2.5 pumpedandgravitysystem systemwherethegravitysystemandthepumpedsystemareused,eitherseparatelyorincombination,toprov
39、ide theflowand/orpressure 3.2.6 pumpingstation pumpinginstallationdesignedtoprovideadequatepressureandflowwithinthedistributionsystem.Threetypes canbedistinguished(seeFigure1): mainlift:normallyattheoutletofthetreatmentworks,orsourceifthereisnotreatment,toprovideflowtothe servicereservoir; intermedi
40、ate:todeliverflowonthewaytoaservicereservoirorsupplyarea; booster:topumpdirectlyfromandtotheareawithoutstorage. 3.2.7 pumpedsystem systemwhereflowand/orpressureareprovidedbymeansofoneormorepumpsandwherethepipelineoperates fullPage9 EN1444:2000 3.2.8 reservoir storagefacilityforwater 3.2.9 servicepip
41、e waterpipewhichsupplieswaterfromthelocalmaintotheconsumer Key 1 Mainlift 2Intermediate 3Booster Figure1Exampleofdifferenttypesofpumpingstations 3.2.10 servicereservoir coveredreservoirforpotablewaterwhichincludeswatercompartment(s),controlbuilding,operationequipment andaccessarrangementprovidingres
42、ervesupplies,pressurestabilityandbalancingdemandfluctuations 3.2.11 standbyplant plantorsystem,suchasadditionalpumpsorduplicatemains,installedtoprovidesecondarymeansforthesupply ofservicesintheeventoffailureormalfunctionofthenormaloperatingunit 3.2.12 trunkmain watermainwhichinterconnectssource(s),t
43、reatmentworks,reservoir(s)and/orsupplyareas,normallywithout directconsumerconnection(s) 3.2.13 waterdistributionsystem partofthewatersupplysystemcomprisingpipelines,servicereservoirs,pumpingstationsandotherassetsby whichwaterisdistributedtotheconsumers.Itbeginsattheoutletfromthewatertreatmentworks(o
44、rsource,if thereisnotreatment)andendsatthepointofconnectiontotheconsumersinstallation(seeFigure2)Page10 EN1444:2000 Key 1N e t w o r k 2 Principalmain 3 Localmain 4 Supplyarea 5 Servicereservoir(maybepresent) 6 Trunkmain 7 Sourceortreatmentworks 8 Servicepipe 9 Consumer Figure2Exampleofawaterdistributionsystem 3.3Components 3.3.1 accessories components,otherthanpipes,fittingsorvalves,whichareusedinapipeline,glands,bolts,lockingringsforjoints, ferrules 3.3.2 adjustablejoint jointwhichpermitssignificantangulardeflectionatthetimeofinstallationbutnotthereafter
