DIN EN 15632-2-2015 District heating pipes - Pre-insulated flexible pipe systems - Part 2 Bonded plastic service pipes - Requirements and test methods German version EN 15632-2 201.pdf

1、March 2015 Translation by DIN-Sprachendienst.English price group 9No 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 2

2、3.040.01!%AR5“2304718www.din.deDDIN EN 15632-2District heating pipes Pre-insulated flexible pipe systems Part 2: Bonded plastic service pipes Requirements and test methods;English version EN 15632-2:2010+A1:2014,English translation of DIN EN 15632-2:2015-03Fernwrmerohre Werkmig gedmmte flexible Rohr

3、systeme Teil 2: Verbundsysteme mit Mediumrohren aus Kunststoff Anforderungen undPrfungen;Englische Fassung EN 15632-2:2010+A1:2014,Englische bersetzung von DIN EN 15632-2:2015-03Tuyaux de chauffage urbain Systmes de tuyaux flexibles prisols Partie 2: Systme bloqu avec tube de service en plastique Pr

4、escriptions et mthodesdessai;Version anglaise EN 15632-2:2010+A1:2014,Traduction anglaise de DIN EN 15632-2:2015-03SupersedesDIN EN 15632-2:2010-06www.beuth.deDocument comprises 14 pagesIn case of doubt, the German-language original shall be considered authoritative.02.15DIN EN 15632-2:2015-03 2 A c

5、omma is used as the decimal marker. National foreword This document (EN 15632-2:2010+A1:2014) has been prepared by Technical Committee CEN/TC 107 “Prefabricated district heating pipe systems” (Secretariat: DS, Denmark). The responsible German body involved in its preparation was the DIN-Normenaussch

6、uss Heiz- und Raumlufttechnik (DIN Standards Committee Heating and Ventilation Technology), Working Committee NA 041-01-12 AA Werksmig gedmmte Mantelrohre fr Fernwrme. This standard includes Amendment A1 approved by CEN on 08 November 2014. The start and finish of text introduced or altered by amend

7、ment is indicated in the text by tags !“. Amendments This standard differs from DIN EN 15632-2:2010-06 as follows: a) Clauses 2, 5 and 6 have been modified. Previous editions DIN EN 15632-2: 2010-06 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 15632-2:2010+A1 December 2014 ICS 23.040.01 Supe

8、rsedes EN 15632-2:2010English Version District heating pipes - Pre-insulated flexible pipe systems -Part 2: Bonded plastic service pipes - Requirements and test methods Tuyaux de chauffage urbain - Systmes de tuyaux flexibles prisols - Partie 2: Systme bloqu avec tube de service en plastique - Presc

9、riptions et mthodes dessai Fernwrmerohre - Werkmig gedmmte flexible Rohrsysteme - Teil 2: Verbundsysteme mit Mediumrohren aus Kunststoff - Anforderungen und Prfungen This European Standard was approved by CEN on 10 December 2009 and includes Amendment 1 approved by CEN on 8 November 2014. CEN member

10、s 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 concerning such national standards may be obtained on application

11、 to the CEN-CENELEC 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 its own language and notified to the CEN-CENELEC Managemen

12、t Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Li

13、thuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17,

14、 B-1000 Brussels 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 15632-2:2010+A1:2014 EEN 15632-2:2010+A1:2014 (E) 2 Contents Page Foreword 3 Introduction .4 1 Scope 5 2 Normative references 5 3 Terms and definitions .6 4 Clas

15、sification 6 4.1 Operating temperatures and service life .6 4.2 Operating pressures 6 5 Requirements .7 5.1 General requirements 7 5.2 Service pipes and fittings .7 5.2.1 Quality .7 5.2.2 Oxygen tightness .7 5.3 Axial shear strength 7 5.4 Linear water tightness .7 5.5 Water vapour permeation .7 6 Te

16、st procedures .8 6.1 General 8 6.2 Temperature cycle test 8 6.3 Axial shear stress 8 6.4 Linear water tightness .9 Annex A (informative) Application of Miners Rule . 11 Bibliography . 12 DIN EN 15632-2:2015-03EN 15632-2:2010+A1:2014 (E) 3 Foreword This document (EN 15632-2:2010+A1:2014) has been pre

17、pared 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 the latest by June 2015, and confli

18、cting national standards shall be withdrawn at the latest by June 2015. 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 any or all such patent rights. This document

19、supersedes EN 15632-2:2010. This document includes Amendment 1 approved by CEN on 2014-11-08. The start and finish of text introduced or altered by amendment is indicated in the text by tags !“. This document is one of a series of standards which form several parts of EN 15632, District heating pipe

20、s Pre-insulated flexible pipe systems: Part 1: Classification, general requirements and test methods; Part 2: Bonded system with plastic service pipes; requirements and test methods; Part 3: Non bonded system with plastic service pipes; requirements and test methods; Part 4: Bonded system with metal

21、 service pipes; requirements and test methods. 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, For

22、mer 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 and the United Kingdom. DIN EN 15632-2:2015-03EN 15632-2:2010+A1

23、:2014 (E) 4 Introduction Pre-insulated flexible bonded pipe systems with plastic service pipes are used in district and local heating networks. This part of the series of standards for the various types of flexible pipe systems is intended to be used in connection with EN 15632-1 which specifies the

24、 basic design criteria for flexible district heating pipes. DIN EN 15632-2:2015-03EN 15632-2:2010+A1:2014 (E) 5 1 Scope This European Standard provides requirements and test methods for flexible, pre-insulated, directly buried heating pipes with plastics service pipes and bonding between the layers

25、of the pipes. This European Standard is valid for maximum operating temperatures of 95 C and maximum operating pressures up to 10 bar for a design lifetime of at least 30 years. This European Standard does not cover surveillance systems. NOTE For higher temperatures or for the transport of other flu

26、ids, for example potable water, additional requirements and testing is needed. Such requirements are not specified in this European Standard. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited

27、 applies. For undated references, the latest edition of the referenced document (including any amendments) applies. !EN 15632-1:2009+A1:2014“, District heating pipes Pre-insulated flexible pipe systems Part 1: Classification, general requirements and test methods EN ISO 15875-1, Plastics piping syst

28、ems for hot and cold water installations Crosslinked polyethylene (PE-X) Part 1: General (ISO 15875-1:2003) EN ISO 15875-2:2003, Plastics piping systems for hot and cold water installations - Crosslinked polyethylene (PE-X) Part 2: Pipes (ISO 15875-2:2003) EN ISO 15875-3, Plastics piping systems for

29、 hot and cold water installations Crosslinked polyethylene (PE-X) Part 3: Fittings (ISO 15875-3:2003) EN ISO 15875-5:2003, Plastics piping systems for hot and cold water installations Crosslinked polyethylene (PE-X) Part 5: Fitness for purpose of the system (ISO 15875-5:2003) EN ISO 15876-1, Plastic

30、s piping systems for hot and cold water installations Polybutylene (PB) Part 1: General (ISO 15876-1:2003) EN ISO 15876-2, Plastics piping systems for hot and cold water installations Polybutylene (PB) Part 2: Pipes (ISO 15876-2:2003) EN ISO 15876-3, Plastics piping systems for hot and cold water in

31、stallations Polybutylene (PB) Part 3: Fittings (ISO 15876-3:2003) EN ISO 15876-5, Plastics piping systems for hot and cold water installations Polybutylene (PB) Part 5: Fitness for purpose of the system (ISO 15876-5:2003) EN ISO 21003-2, Multilayer piping systems for hot and cold water installations

32、 inside buildings Part 2: Pipes (ISO 21003-2:2008) ISO 10147, Pipes and fittings made of crosslinked polyethylene (PE-X) Estimation of the degree of crosslinking by determination of the gel content ISO 17455, Plastics piping systems Multilayer pipes Determination of the oxygen permeability of the ba

33、rrier pipe DIN EN 15632-2:2015-03EN 15632-2:2010+A1:2014 (E) 6 3 Terms and definitions For the purposes of this document the terms and definitions given in !EN 15632-1:2009+A1:2014“ shall apply. 4 Classification 4.1 Operating temperatures and service life Pipe systems according to this European Stan

34、dard are designed for a service life of at least 30 years when operated with the following temperature profile: 29 years at 80 C + 1 year at 90 C + 100 h at 95 C. Other temperature/time profiles can be applied in accordance with ISO 13760 (Miners Rule). Further information is given in Annex A. The m

35、aximum operating temperature shall not exceed 95 C. 4.2 Operating pressures Pipe systems according to this European Standard are designed for continuous operating pressures of 6 bar, 8 bar or 10 bar. Table 1 defines the maximum SDR ratios of the service pipe required to withstand the operating press

36、ures. Table 1 SDR ratios required for different operating pressures Operating Pressure Service pipe 6 bar 8 bar 10 bar PE-X SDR 11 SDR 9 SDR 7,4 PB SDR 13,6 SDR 11 SDR 9 Multilayer pipes Wall thicknesses shall be calculated according to the methods defined in EN ISO 21003-2 The SDR ratios in Table 1

37、 are based on the regression curves of EN ISO 15875-1 and EN ISO 15876-1. Higher SDR ratios may be applied, if they are based on regression curves developed in accordance with EN ISO 9080. DIN EN 15632-2:2015-03EN 15632-2:2010+A1:2014 (E) 7 5 Requirements 5.1 General requirements In addition to the

38、general requirements defined in EN 15632-1 the following product specific requirements apply. 5.2 Service pipes and fittings 5.2.1 Quality Service pipes and fittings shall comply with: EN ISO 15875-1, EN ISO 15875-2, EN ISO 15875-3, EN ISO 15875-5, for pipes made of crosslinked polyethylene (PE-X),

39、!additionally the pipes shall not fail when tested for 15 000 h at 110 C and at a hoop stress of 2,4 N/mm2. All requirements of the pipe and fitting according to EN ISO 15875-2 and EN ISO 15875-3 especially the degree of cross-linking shall be met before leaving the production site.“ EN ISO 15876-1,

40、 EN ISO 15876-2, EN ISO 15876-3, EN ISO 15876-5, for pipes made of polybutylene (PB), !additionally the pipes shall not fail when tested for 15 000 h at 110 C and at a hoop stress of 2,2 N/mm2.“ EN ISO 21003-2 for multi-layer pipes. Deviating from these standards, temperature cycle tests on service

41、pipes and fittings shall be carried out with test cycle numbers specified in 6.2. 5.2.2 Oxygen tightness The oxygen diffusion of service pipes shall not exceed !1,8 mg/md“ at 80 C when tested according to ISO 17455. !deleted text“ 5.3 Axial shear strength The axial shear strength between the service

42、 pipe and the insulation shall be at least 0,09 MPa for plastics pipes and 0,12 MPa for multi-layer pipes, when tested in accordance with 6.3. The test result shall be determined as an average of five measurements. 5.4 Linear water tightness When tested in accordance with 6.4, the amount of water le

43、aking through any of the pipe ends shall not exceed 100 g after 168 h. 5.5 Water vapour permeation The pipe supplier shall give information about the risk of water accumulation in the insulation dependant on the service conditions. NOTE PEX and PB pipes are slightly open for diffusion of water from

44、the media to the insulation. The rate of diffusion increases with the temperature. The casing is likewise open for diffusion from the insulation to the soil. The rate of this diffusion depends on the casing temperature and the water vapour partial pressure difference over the casing wall. For DIN EN

45、 15632-2:2015-03EN 15632-2:2010+A1:2014 (E) 8 pipes installed under the ground water table there will always be a certain build up of water directly under the casing. Experience shows that this build up is limited and not detrimental to the function although a certain loss of insulation capacity may

46、 be expected. 6 Test procedures 6.1 General Unless stated otherwise, all tests are to be carried out: no sooner than 72 h after production; at room temperature; on samples taken from coiled pipes. !Guidelines for testing frequencies and responsibilities are given in EN 15632-1:2009+A1:2014, Annex D.

47、“ 6.2 Temperature cycle test The test procedure for the thermal cycle test for each material is defined in the standards listed in 5.2.1. The minimum number of test cycles and the cycle times for service pipe system tests are given in Table 2. Table 2 Test cycles for service pipe system tests servic

48、e pipe outer diameter d2Test cycles cycle times d2 32 mm 2 000 30 min 40 mm d2 110 mm 1 000 30 min d2 110 mm 2 50 60 min 6.3 Axial shear stress The axial shear strength between the service pipe and the insulation shall be tested as shown in figure 1, where (1) is the test specimen, (2) is a cylindri

49、cal piston pressing onto the service pipe and a support (3) with a cylindrical opening. The test specimen (1) shall have a length which equals the outer diameter of the casing 5 %, the ends shall be cut at a right angle. The piston (2) shall be made from metal and shall have an outer diameter which equals the outer diameter of the service pipe with a tolerance of up to 01mm. The support (3) shall be made of metal, the diameter of the circular central opening shal