DIN EN 15698-2-2015 District heating pipes - Preinsulated bonded twin pipe systems for directly buried hot water networks - Part 2 Fitting and valve assembly of steel service pipes.pdf

1、November 2015English price group 12No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 23.040.10!%GR-“2364710www.din.de

2、DIN EN 15698-2District heating pipes Preinsulated bonded twin pipe systems for directly buried hot water networks Part 2: Fitting and valve assembly of steel service pipes, polyurethane thermal insulation and outer casing of polyethylene;English version EN 15698-2:2015,English translation of DIN EN

3、15698-2:2015-11Fernwrmerohre Werkmig gedmmte Verbundmanteldoppelrohre fr direkt erdverlegte Fernwrmenetze Teil 2: Verbundformstck und vorgedmmte Absperrarmatur, bestehend aus Stahl-Mediumrohr, Polyurethan-Wrmedmmung und Auenmantel aus Polyethylen;Englische Fassung EN 15698-2:2015,Englische bersetzun

4、g von DIN EN 15698-2:2015-11Tuyaux de chauffage urbain Systmes bloqus de bitubes prisols pour les rseaux deau chaude enterrs directement Partie 2: Assemblages de raccords et dappareils de robinetterie pour tubes de service en acier, isolation thermique en polyurthane et protection extrieure unique e

5、n polythylne;Version anglaise EN 15698-2:2015,Traduction anglaise de DIN EN 15698-2:2015-11www.beuth.deDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.Document comprises 18 pages10.15 DIN EN 15698-2:2015-11 2 A comma is used as the

6、decimal marker. National foreword This document (DIN EN 15698-2:2015) has been prepared by Technical Committee CEN/TC 107 “Pre-fabricated district heating and district cooling pipe systems” (Secretariat: DS, Denmark). The responsible German body involved in its preparation was the DIN-Normenausschus

7、s Heiz- und Raumlufttechnik (DIN Standards Committee Heating and Ventilation Technology), Working Committee NA 041-01-12 AA Werksmig gedmmte Mantelrohre fr Fernwrme (SpA CEN/TC 107). EN 15698-2 August 2015 ICS 23.040.10 English Version District heating pipes - Preinsulated bonded twin pipe systems f

8、or directly buried hot water networks - Part 2: Fitting and valve assembly of steel service pipes, 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 2: Assemblages d

9、e raccords et dappareils de robinetterie pour tubes de service en acier, isolation thermique en polyurthane et protection extrieure unique en polythylne Fernwrmerohre - Werkmig gedmmte Verbundmanteldoppelrohre fr direkt erdverlegte Fernwrmenetze - Teil 2: Verbundformstck und vorgedmmte Absperrarmatu

10、r, bestehend aus Stahl-Mediumrohr, Polyurethan-Wrmedmmung und Auenmantel aus Polyethylen This European Standard was approved by CEN on 3 July 2015. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of

11、 a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German)

12、. A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, C

13、yprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey andUnited K

14、ingdom. CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 15698-2:2015 EEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT

15、EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGContents Page European foreword .3 Introduction .4 1 Scope 5 2 Normative references 5 3 Terms and definitions .6 4 Requirements .8 4.1 General 8 4.2 Steel parts .9 4.3 Welding of steel parts .9 4.3.1 Welding of steel pipes and elements .9 4.3.2 W

16、elding of fixing bars .9 4.3.3 Placing of the fixing bars 9 4.4 Casing .9 4.5 Polyurethane rigid foam insulation (PUR) 9 4.6 Fitting and valve assemblies 9 4.7 Requirements for effective operation and maintenance 10 4.8 Surveillance system . 10 5 Test methods . 10 6 Marking 10 6.1 General . 10 6.2 S

17、teel service pipe 11 6.3 Casing 11 6.4 Fitting assembly 11 6.5 Steel valves and valve assembly 11 Annex A (normative) Waste treatment and recycling . 12 Annex B (informative) Examples of twin pipe fitting assemblies 13 2DIN EN 15698-2:2015-11 EN 15698-2:2015 (E) European foreword This document (EN 1

18、5698-2:2015) has been prepared by Technical Committee CEN/TC 107 “Prefabricated district heating and district cooling pipe system”, 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 endors

19、ement, at the latest by February 2016 and conflicting national standards shall be withdrawn at the latest by February 2016. 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 ident

20、ifying 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, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugos

21、lav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. 3DIN EN 15698-2:2015-11EN 15698-2:2015 (E)Introdu

22、ction EN 15698-1:2009 was published with the following title: 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 insulation and outer casing of polyethylene. EN 15698-2 is a co

23、mplement to the following existing European Standards for district heating bonded single and twin pipe systems: 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 ou

24、ter casing of polyethylene; EN 488, District heating pipes - Preinsulated bonded pipe systems for directly buried hot water networks - Steel valve assembly for steel service pipes, polyurethane thermal insulation and outer casing of polyethylene. EN 15698-2 gives additional requirements for fitting

25、and valve assemblies used in bonded twin pipe systems. Waste management and recycling of materials is dealt with in Annex A. Other standards from CEN/TC 107 are: EN 253, District heating pipes - Preinsulated bonded pipe systems for directly buried hot water networks - Pipe assembly of steel service

26、pipe, 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 pipes, polyurethane thermal insulation and outer casing of polyethylene; EN 13941, Desig

27、n 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; EN 15632 (all parts), District heating pipes - Pre-insulated flexible pipe systems. 4DIN EN

28、15698-2:2015-11 EN 15698-2:2015 (E) 1 Scope This European Standard specifies requirements and test methods for fittings of prefabricated thermally insulated twin pipe assemblies comprising steel service fittings and/or valves from DN 15 to DN 250, rigid polyurethane foam insulation and an outer casi

29、ng of polyethylene for use in directly buried hot water networks with preinsulated twin pipe assemblies in accordance with EN 15698-1:2009. This European Standard covers the following: fitting assemblies, such as T-pieces, reducers and anchors; valve assemblies. This European Standard applies only t

30、o insulated fitting assemblies for continuous operation with hot water at various temperatures in accordance with the scope EN 15698-1:2009. This European Standard applies to fitting and valve assemblies with a minimum design pressure of 16 bar (overpressure) complying with EN 13941. Guidelines for

31、quality inspection and testing of fitting assemblies are given in EN 448:2015, Annex A and EN 15698-1:2009, Annex A. Guidelines for quality inspection and testing of valve assemblies are given in EN 488:2015, Annex A and EN 15698 -1:2009, Annex A. Procedures for PE-welding are given in EN 448:2015,

32、Annex B. NOTE This European Standard does not include rules for calculation of loads and stresses. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited

33、applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 253:2009+A2:2015, District heating pipes - Preinsulated bonded pipe systems for directly buried hot water networks - Pipe assembly of steel service pipe, polyurethane thermal insulat

34、ion and outer casing of polyethylene EN 448:2015, 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 488:2015, District heating pipes - Prein

35、sulated bonded pipe systems for directly buried hot water networks - Steel valve assembly for steel service pipes, polyurethane thermal insulation and outer casing of polyethylene EN 10204, Metallic products - Types of inspection documents EN 13941, Design and installation of preinsulated bonded pip

36、e systems for district heating EN 14419, District heating pipes - Preinsulated bonded pipe systems for directly buried hot water networks - Surveillance systems EN 15698-1:2009, District heating pipes - Preinsulated bonded twin pipe systems for directly buried hot water networks - Part 1: Twin pipe

37、assembly of steel service pipe, polyurethane thermal insulation and outer casing of polyethylene 5DIN EN 15698-2:2015-11EN 15698-2:2015 (E)3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 253:2009+A2:2015 and the following apply. 3.1 anchor constructio

38、n used to transfer the loads from the steel service pipe through the insulation and the casing to a fixed point 3.2 bending angle deviation in direction of the steel pipe centre lines 3.3 butt welding bend bend manufactured either by hot bending of steel pipe or by hot forming of steel plates that a

39、re subsequently welded together 3.4 transition assembly preinsulated fitting to connect single and twin pipe 3.5 cap not pre-insulated fitting to be welded on the end of a pipe or pipe element 3.6 cold formed bend bend manufactured by cold bending of steel pipe 3.7 fitting reducer, tee, factory-made

40、 elbow and bend, cap, welding stub, mechanical joint 3.8 fixing bars steel plates used for bonding of flow and return pipes to eliminate various expansions of straight pipe sections on the fittings 3.9 forged T-piece T-piece manufactured by hot forming of either steel pipes or steel plates that are

41、subsequently welded together 3.10 horizontal bend bend in the horizontal plane 3.11 house entry bend bend assembly with 90 twisted service pipe used for house connections 3.12 hot formed bend bend manufactured by heating pipe during bending 6DIN EN 15698-2:2015-11 EN 15698-2:2015 (E) 3.13 induction

42、bend bend manufactured by induction bending 3.14 induction bending continuous bending process that utilizes induction heating to create a narrow, circumferential, heated band around the material being bent 3.15 joint end end of the assembly (300 mm long, measured from end of service pipe) which is p

43、repared for connection to another assembly (service pipe welded together and casing connected with a joint) 3.16 nominal size DN numerical metric designation of size, common to components in piping systems which are used for reference purposes 3.17 reducer butt welding fitting to be welded between s

44、teel pipes or fittings of different diameters 3.18 single pipe assembly technical solution of district heating pipes with one steel service pipe in one casing SOURCE: EN 15698-1:2009, 3.1 3.19 twin pipe assembly technical solution of district heating pipes with two steel service pipes in one casing

45、SOURCE: EN 15698-1:2009, 3.2 3.20 twisting of service pipes tendency of the service pipes of a twin pipe assembly to twist around each other SOURCE: EN 15698-1:2009, 3.3 3.21 vertical bend bend in the vertical plane 3.22 surveillance system system that consists of measuring sections and measuring in

46、struments for surveillance of pipe systems according to EN 14419 3.23 welded T-piece butt welding fitting manufactured by welding together pieces of steel pipes with or without the use of a welding saddle or a drawn collar on the main pipe 7DIN EN 15698-2:2015-11EN 15698-2:2015 (E)3.24 welding saddl

47、e butt welding fitting to be welded into the main pipe for the welded connection between the main pipe and the branch pipe in a T-piece Note 1 to entry: For examples of fittings, see Figure 1. Note 2 to entry: For examples of twin pipe fitting and valve assemblies, see Annex B. Key a cold or hot for

48、med bends b butt welding bend or elbows c bending angle, d forged T-piece e T-piece with welding saddle f T-piece with drawn collar g directly welded T-piece Figure 1 Examples of fittings SOURCE: EN 448:2015, 3.17, modified Note 2 to entry has been added. 4 Requirements 4.1 General The material of p

49、ressurized steel parts shall be certified, with a 3.1 material certificate, in accordance with EN 10204. If traceability on materials is required by the end user, it shall be specified at the time of ordering. Corresponding material certificates shall be delivered to the end user if specified at the time of ordering. All components shall be designed in accordance with EN 13941, for the actions and stresses that