BS EN 489-2009 District heating pipes - Preinsulated bonded pipe systems for directly buried hot water networks - Joint assembly for steel service pipes polyurethane thermal insula.pdf
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1、BS EN 489:2009ICS 23.040.01; 91.140.60NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDDistrict heating pipes Preinsulated bondedpipe systems fordirectly buried hotwater networks Joint assembly forsteel service pipes,polyurethane thermalinsulation and outercasing
2、 of polyethyleneThis British Standardwas published under theauthority of the StandardsPolicy and StrategyCommittee on 31 May 2009 BSI 2009ISBN 978 0 580 57358 3Amendments/corrigenda issued since publicationDate CommentsBS EN 489:2009National forewordThis British Standard is the UK implementation of
3、EN 489:2009. Itsupersedes BS EN 489:2003 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee RHE/9, Insulated underground pipelines.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not pu
4、rport to include all the necessary provisionsof a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunityfrom legal obligations.BS EN 489:2009EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 489March 2009ICS 23.040.01 Supersedes EN 489:2
5、003 English VersionDistrict heating pipes - Preinsulated bonded pipe systems fordirectly buried hot water networks - Joint assembly for steelservice pipes, polyurethane thermal insulation and outer casingof polyethyleneTuyaux de chauffage urbain - Systmes bloqus de tuyauxprisols pour les rseaux deau
6、 chaude enterrsdirectement - Assemblage prisol pour tube de service enacier, isolation thermique en polyurthane et tube deprotection en polythylneFernwrmerohre - Werkmig gedmmteVerbundmantelrohrsysteme fr direkt erdverlegteFernwrmenetze - Rohrverbindungen fr Stahlmediumrohremit Polyurethan-Wrmedmmun
7、g und Auenmantel ausPolyethylenThis European Standard was approved by CEN on 31 January 2009.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date
8、lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the res
9、ponsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Ice
10、land, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: Avenue Mar
11、nix 17, B-1000 Brussels 2009 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 489:2009: EBS EN 489:2009EN 489:2009 (E) 2 Contents page Foreword 4Introduction . 51 Scope 72 Normative references 73 Terms and definitions . 84 Requirement
12、s . 84.1 General requirements 84.1.1 General requirements for the joint . 84.1.2 Installation of the joint 94.1.3 Competence of the welder and fitter 94.1.4 Expected thermal life and long term temperature resistance . 94.1.5 Steel service pipe weld . 94.1.6 Polyurethane rigid foam insulation (PUR) 9
13、4.1.7 Joint casing 94.2 Type test requirements . 104.2.1 Water tightness 104.2.2 Soil stress test . 104.2.3 Polyurethane rigid foam insulation (PUR) properties 104.2.4 Weld joint stress crack resistance . 104.3 Installation instructions 114.3.1 General 114.3.2 Work environment . 114.3.3 Cleaning 114
14、.3.4 Surveillance system 114.3.5 Steel site weld 114.3.6 Joint casing 114.3.7 Joint insulation 115 Methods for type tests 125.1 Soil stress test . 125.2 Water impermeability test . 155.3 Weld joint stress crack resistance test . 155.4 Polyurethane rigid foam insulation (PUR) 155.4.1 General 155.4.2
15、Test specimens 155.4.3 Sampling . 165.4.4 Ageing resistance 165.4.5 Cell structure 165.4.6 Foam density 165.4.7 Water absorption at elevated temperature 176 Marking . 176.1 General 176.2 Joint casing 176.3 Plugs . 176.4 Joint insulation system . 18Annex A (normative) Fusion welding of steel service
16、pipes on site 19A.1 General 19A.2 Material . 19A.3 Welding process 19BS EN 489:2009EN 489:2009 (E) 3 A.4 Preparation for welding and lining up . 19A.5 Qualification of welders 19A.6 Steel weld inspection 20A.6.1 General 20A.6.2 Leak-tightness test with air/gas . 20A.6.3 Leak-tightness test with wate
17、r . 20A.6.4 Radiographic examination 20A.6.5 Ultrasonic examination . 20Annex B (informative) General guidelines for inspection of the joint on site 21Annex C (informative) Qualification of fitters installing joints in preinsulated bonded pipe networks 23C.1 Knowledge and skills 23C.2 Background for
18、 training and testing . 23C.3 Subjects for training and testing . 23C.3.1 General 23C.3.2 Casing of polyethylene (PE) . 24C.3.3 Surveillance 25C.3.4 PUR-foam system 25C.3.5 Joint types/jointing systems 26C.3.6 Installation of joints . 27Bibliography 31BS EN 489:2009EN 489:2009 (E) 4 Foreword This do
19、cument (EN 489:2009) has been prepared by Technical Committee CEN/TC 107 “Prefabricated district heating pipe systems”, the secretariat of which is held by DS. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at th
20、e latest by September 2009, and conflicting national standards shall be withdrawn at the latest by September 2009. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying an
21、y or all such patent rights. This document supersedes EN 489:2003. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, F
22、inland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 489:2009EN 489:2009 (E) 5 Introduction The first edition of EN 489 was
23、 approved in 1994 and updated in 2003. The main areas of this revision are the following: Requirements for welded joints have been added; Requirements for joints insulated with prefabricated joint insulation have been added; Requirements and test methods for PUR foam properties have been lifted from
24、 EN 253 into this standard; Requirements for marking of joints have been added. This specification is part of the series of standards for bonded systems using polyurethane foam thermal insulation applied to bond to a steel service pipe and a polyethylene casing. For information on the minimum expect
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