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1、BS EN 15698-1:2009 ICS 23.040.10 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BRITISH STANDARD District heating pipes Preinsulated bonded twin pipe systems for directly buried hot water networks Part 1: Twin pipe assembly of steel service pipe, polyurethane thermal insulati
2、on and outer casing of polyethylene Licensed CopyChinese University of Hong Kong, 11/04/2009 07:26, Uncontrolled Copy, (c) BSI This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 January 2009 BSI 2009 ISBN 978 0 580 58925 6 Amendments/corrigen
3、da issued since publication DateComments BS EN 15698-1:2009 National foreword This British Standard is the UK implementation of EN 15698-1:2009. The UK participation in its preparation was entrusted to Technical Committee RHE/9, Insulated underground pipelines. A list of organizations represented on
4、 this committee can be obtained on request to its secretary. 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 cannot confer immunity from legal obligations. Licensed CopyChin
5、ese University of Hong Kong, 11/04/2009 07:26, Uncontrolled Copy, (c) BSI BS EN 15698-1:2009 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 15698-1 January 2009 ICS 23.040.10 English Version District heating pipes - Preinsulated bonded twin pipe systems for directly buried hot water networks -
6、 Part 1: Twin pipe assembly of steel service pipe, polyurethane thermal insulation and outer casing of polyethylene Tuyaux de chauffage urbain - Systmes bloqus de bitubes prisols pour les rseaux deau chaude enterrs directement - Partie 1: Assemblage de bitubes pour tube de service en acier, isolatio
7、n thermique en polyurthane et tube de protection en polythylne Fernwrmerohre - Werkmig gedmmte Verbundmanteldoppelrohre fr direkt erdverlegte Fernwrmenetze - Teil 1: Verbund-Doppelrohrsystem bestehend aus zwei Stahl-Mediumrohren, Polyurethan- Wrmedmmung und einem Auenmantel aus Polyethylen This Euro
8、pean Standard was approved by CEN on 5 December 2008. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references c
9、oncerning such national standards 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 translation under the responsibility of a CEN member into it
10、s own language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Li
11、thuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2
12、009 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 15698-1:2009: E Licensed CopyChinese University of Hong Kong, 11/04/2009 07:26, Uncontrolled Copy, (c) BSI BS EN 15698-1:2009 EN 15698-1:2009 (E) 2 Contents page Foreword 3 Introdu
13、ction . 4 1 Scope 5 2 Normative references 5 3 Terms and definitions . 5 4 Requirements . 5 4.1 General 5 4.2 Steel service pipe. 5 4.3 Material, casing properties and dimensions . 6 4.4 Polyurethane rigid foam insulation (PUR) 6 4.5 Pipe assembly 6 4.5.1 End alignment of forward and return service
14、pipes. 6 4.5.2 Distance between forward and return service pipes . 6 4.5.3 Twisting of service pipes 7 4.5.4 Centre line deviation . 8 4.5.5 Pipe ends 9 4.5.6 Axial shear strength 9 4.5.7 Expected thermal life and long term temperature resistance . 9 4.5.8 Thermal conductivity in unaged condition .
15、9 4.5.9 Impact resistance. 9 4.5.10 Long term creep resistance and modulus 9 4.5.11 Surface conditions at delivery 9 4.5.12 Measuring wires for surveillance systems . 9 5 Test methods 9 5.1 General 9 5.2 Test specimens 9 5.3 Casing . 10 5.4 Polyurethane rigid foam insulation (PUR) 10 5.5 Pipe assemb
16、ly 10 5.5.1 Axial shear strength 10 5.5.2 Expected thermal life and long term temperature resistance . 13 5.5.3 Thermal conductivity in unaged condition . 13 5.5.4 Thermal transmittance 13 5.5.5 Impact resistance. 13 5.5.6 Creep behaviour at 140 C 13 6 Marking . 13 Annex A (informative) Guidelines f
17、or inspection and testing 14 Annex B (informative) Calculation of thermal transmittance. 15 Annex C (informative) Waste treatment and recycling 17 Bibliography 18 Licensed CopyChinese University of Hong Kong, 11/04/2009 07:26, Uncontrolled Copy, (c) BSI BS EN 15698-1:2009 EN 15698-1:2009 (E) 3 Forew
18、ord This document (EN 15698-1:2009) 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 end
19、orsement, at the latest by July 2009, and conflicting national standards shall be withdrawn at the latest by July 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 identifyi
20、ng any or all such patent rights. 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, Finland, France, Germany, Greece,
21、Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Licensed CopyChinese University of Hong Kong, 11/04/2009 07:26, Uncontrolled Copy, (c) BSI BS EN 15698-1:2009
22、 EN 15698-1:2009 (E) 4 Introduction This specification is part of the standards for bonded systems using polyurethane foam thermal insulation applied to bond to two steel service pipes and a polyethylene casing. This standard has been elaborated as a complement to the standards for bonded systems us
23、ing polyurethane foam thermal insulation applied to bond to one steel service pipe and a polyethylene casing. These standards are: EN 253, District heating pipes Preinsulated bonded pipe systems for directly buried hot water networks Pipe assembly of steel service pipe, polyurethane thermal insulati
24、on and outer casing of polyethylene; EN 448, District heating pipes Preinsulated bonded pipe systems for directly buried hot water networks Fitting assemblies of steel service pipes, polyurethane thermal insulation and outer casing of polyethylene; EN 488, District heating pipes Preinsulated bonded
25、pipe systems for directly buried hot water networks Steel valve assembly for steel service pipes, polyurethane thermal insulation and outer casing of polyethylene; EN 489, District heating pipes Preinsulated bonded pipe systems for directly buried hot water networks Joint assembly for steel service
26、pipes, polyurethane thermal insulation and outer casing of polyethylene; EN 13941, Design and installation of preinsulated bonded pipe systems for district heating; EN 14419, District heating pipes Preinsulated bonded pipe systems for directly buried hot water networks Surveillance systems. Waste ma
27、nagement and recycling of materials is dealt with in Annex C. Licensed CopyChinese University of Hong Kong, 11/04/2009 07:26, Uncontrolled Copy, (c) BSI BS EN 15698-1:2009 EN 15698-1:2009 (E) 5 1 Scope This European Standard for District Heating Twin Pipes, specifies requirements and test methods fo
28、r straight lengths of prefabricated thermally insulated pipe-in-pipe assemblies for directly buried hot water networks, comprising two steel service pipes from DN 15 to DN 250, rigid polyurethane foam insulation and one cylindrical outer casing of polyethylene. The pipe assembly may also include the
29、 following additional elements: Measuring wires, spacers and diffusion barriers. This standard applies only to insulated twin pipe assemblies, for continuous operation with hot water at various temperatures up to 120 C and occasionally with a peak temperature up to 140 C. The estimation of expected
30、thermal life with continuous operation at various temperatures is outlined in Annex B of EN 253. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest
31、edition of the referenced document (including any amendments) applies. EN 253:2009, District heating pipes Preinsulated bonded pipe systems for directly buried hot water networks Pipe assembly of steel service pipe, polyurethane thermal insulation and outer casing of polyethylene EN ISO 3126, Plasti
32、cs piping systems - Plastics components - Determination of dimensions (ISO 3126:2005) 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 253:2009 and the following apply. 3.1 single pipe assembly technical solution of district heating pipes with one stee
33、l service pipe in one casing 3.2 twin pipe assembly technical solution of district heating pipes with two steel service pipes in one casing 3.3 twisting of service pipes tendency of the service pipes of a twin pipe assembly to twist around each other 4 Requirements 4.1 General Unless otherwise speci
34、fied, the requirements shall be valid for each single measurement. For information on suitable guidelines for inspection of manufactured preinsulated twin pipes see Annex A. 4.2 Steel service pipe Material, dimensions, tolerances and surface condition of the steel service pipes shall be as specified
35、 in EN 253. Licensed CopyChinese University of Hong Kong, 11/04/2009 07:26, Uncontrolled Copy, (c) BSI BS EN 15698-1:2009 EN 15698-1:2009 (E) 6 4.3 Material, casing properties and dimensions Material and casing properties shall be as specified in EN 253. For the casing diameters specified in Table 1
36、 the dimensions of the casing shall be as specified in EN 253. The maximum out-of-roundness shall conform to Table 1 and be measured in accordance with EN ISO 3126. Table 1 Casing diameters Nominal diameter of service pipes DN Casing diameter, insulation series1 Dc min Casing diameter, insulation se
37、ries 2 Dc min Casing diameter, insulation series 3 Dc min Maximum out- of-roundness mm mm mm mm 15 20 25 32 125 125 140 160 140 140 160 180 160 160 180 200 1,2 1,2 1,2 1,3 40 50 65 160 200 225 180 225 250 200 250 280 1,4 1,4 1,5 80 100 125 250 315 400 280 355 450 315 400 500 1,6 2,0 2,5 150 200 250
38、450 560 710 500 630 800 560 710 900 3,0 4,0 5,0 4.4 Polyurethane rigid foam insulation (PUR) Material and insulation properties shall be as specified in EN 253. 4.5 Pipe assembly 4.5.1 End alignment of forward and return service pipes The alignment of the ends of the forward and return service pipes
39、 shall not differ more than 1 mm when measured in the longitudinal direction. 4.5.2 Distance between forward and return service pipes The distance between forward and return service pipes shall be in accordance with Table 2. The tolerance of the distance between the forward and return service pipes,
40、 Lp, is 1 mm when measured in the pipe ends and 2 mm when measured at any point inside the twin pipe assembly, see Figure 1. Licensed CopyChinese University of Hong Kong, 11/04/2009 07:26, Uncontrolled Copy, (c) BSI BS EN 15698-1:2009 EN 15698-1:2009 (E) 7 Table 2 Distance between service pipes Nomi
41、nal diameter of service pipes DN Distance between service pipes Lp mm 15 20 25 32 19 19 19 19 40 50 65 19 20 20 80 100 125 25 25 30 150 200 250 40 45 45 4.5.3 Twisting of service pipes The twisting, w, of the service pipes in one end of the twin pipe assembly in relation to the other end shall be ma
42、ximum 3 mm. The twisting, w, of the service pipes in any end of the pipe assembly in relation to any point inside the pipe assembly shall be maximum 6 mm. For cut pipes the twisting, w, shall be maximum 3 mm, see Figure 1. Licensed CopyChinese University of Hong Kong, 11/04/2009 07:26, Uncontrolled
43、Copy, (c) BSI BS EN 15698-1:2009 EN 15698-1:2009 (E) 8 Key 1 forward service pipe 2 return service pipe 3 casing 4 insulation 5 service pipe at maximum twisting, wmax Lp distance between service pipes w twisting Figure 1 Twisting, w, and distance between service pipes, Lp 4.5.4 Centre line deviation
44、 The distance between the common centre line of the service pipes and the centre line of the casing at any point shall not exceed the limits given in Table 3. Table 3 Centre line deviation related to nominal diameters Nominal outside diameter of casing mm Maximum centre line deviation mm 75 to 160 1
45、80 to 400 450 to 630 710 to 800 3,0 5,0 8,0 10,0 Licensed CopyChinese University of Hong Kong, 11/04/2009 07:26, Uncontrolled Copy, (c) BSI BS EN 15698-1:2009 EN 15698-1:2009 (E) 9 4.5.5 Pipe ends The pipe ends shall be in accordance with EN 253. 4.5.6 Axial shear strength When measured in accordanc
46、e with 5.5.1.4 and 5.5.1.5 the axial shear strength on each service pipe shall fulfil the requirement in EN 253. 4.5.7 Expected thermal life and long term temperature resistance When tested in accordance with 5.5.2 the expected thermal life and long term temperature resistance shall be in accordance
47、 with EN 253. 4.5.8 Thermal conductivity in unaged condition When tested in accordance with 5.5.3 the thermal conductivity in unaged condition shall be in accordance with EN 253. The thermal conductivity in unaged condition shall be used to calculate the thermal transmittance as described in 5.5.4.
48、4.5.9 Impact resistance When determined in accordance with 5.5.5 the impact resistance shall be in accordance with EN 253. 4.5.10 Long term creep resistance and modulus When tested in accordance with 5.5.6 the creep behaviour shall be in accordance with EN 253. 4.5.11 Surface conditions at delivery
49、The surface conditions at delivery shall be in accordance with EN 253. 4.5.12 Measuring wires for surveillance systems Measuring wires, if any, shall comply with the requirements of EN 14419. 5 Test methods 5.1 General Where test requirements specified in this standard differ from those in other standards referred to, the requirements laid down in this European Standard shall apply. All test specimens shall be representative for the production. 5.2 Test specimens Test specimens shall be taken in accordance wi
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