1、BS EN15632-3:2010ICS 23.040.01NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDDistrict heating pipes Pre-insulatedflexible pipe systemsPart 3: Non bonded system with plasticservice pipes; requirements and testmethodsLicensed Copy: Wang Bin, ISO/EXCHANGE CHINA ST
2、ANDARDS, 10/06/2010 02:55, Uncontrolled Copy, (c) BSIThis British Standardwas published under theauthority of the StandardsPolicy and StrategyCommittee on 28 February2010 BSI 2010ISBN 978 0 580 58238 7Amendments/corrigenda issued since publicationDate CommentsBS EN 15632-3:2010National forewordThis
3、British Standard is the UK implementation of EN 15632-3:2010.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 p
4、urport 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.Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 10/06/2010 02:55, Uncontrolled Copy, (c) BSIBS EN 1563
5、2-3:2010EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 15632-3 February 2010 ICS 23.040.01 English Version District heating pipes - Pre-insulated flexible pipe systems - Part 3: Non bonded system with plastic service pipes; requirements and test methods Tuyaux de chauffage urbain - Systmes de
6、tuyaux flexibles prisols - Partie 3: Systme non bloqu avec tube de service en plastique; prescriptions et mthodes dessai Fernwrmerohre - Werkmig gedmmte flexible Rohrsysteme - Teil 3: Nicht-Verbund-Rohrsysteme mit Mediumrohren aus Kunststoff - Anforderungen und Prfungen This European Standard was ap
7、proved by CEN on 10 December 2009. 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 concerning such nati
8、onal 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 its own language and
9、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, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, L
10、uxembourg, 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: Avenue Marnix 17, B-1000 Brussels 2010 CEN All
11、rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 15632-3:2010: ELicensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 10/06/2010 02:55, Uncontrolled Copy, (c) BSIBS EN 15632-3:2010EN 15632-3:2010 (E) 2 Contents Page Foreword 3Introduction
12、.41 Scope 52 Normative references 53 Terms and definitions .64 Classification 64.1 Operating temperatures and service life .64.2 Operating pressures 64.3 General requirements 64.4 Service pipes and fittings .74.4.1 Quality .74.4.2 Oxygen tightness .74.5 Sealing in linear direction .74.6 Water vapour
13、 permeation .75 Test procedures .75.1 General 75.2 Temperature cycle test 8Annex A (informative) Application of Miners Rule 9Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 10/06/2010 02:55, Uncontrolled Copy, (c) BSIBS EN 15632-3:2010EN 15632-3:2010 (E) 3 Foreword This document (EN 15632-3:2
14、010) 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 the latest by Augu
15、st 2010, and conflicting national standards shall be withdrawn at the latest by August 2010. 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 r
16、ights. This document is one of a series of standards which form several parts of EN 15632, District heating pipes 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
17、3: Non bonded system with plastic service pipes; requirements and test methods; Part 4: Bonded system with metal 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 thi
18、s European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland
19、 and the United Kingdom. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 10/06/2010 02:55, Uncontrolled Copy, (c) BSIBS EN 15632-3:2010EN 15632-3:2010 (E) 4 Introduction Pre-insulated flexible non bonded pipe systems with plastic service pipes are widely used in district and local heating net
20、works. 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 where the basic design criteria for flexible district heating pipes are specified. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 10/06/2010 02:55,
21、Uncontrolled Copy, (c) BSIBS EN 15632-3:2010EN 15632-3:2010 (E) 5 1 Scope This European Standard provides requirements and test methods for flexible, pre-insulated, direct buried district heating pipes with plastic service pipes and no bonding between the layers of the pipes. This European Standard
22、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 fluids, for example potable water, addit
23、ional 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 applies. For undated references, the
24、 latest edition of the referenced document (including any amendments) applies. 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 15632-1:20
25、09, District heating pipes Pre-insulated flexible pipe systems Part 1: Classification, general requirements and test methods EN 15632-2:2009, District heating pipes Pre-insulated flexible pipe systems Part 2: Bonded system with plastic service pipes; requirements and test methods EN ISO 9080, Plasti
26、cs piping and ducting systems Determination of the long-term hydrostatic strength of thermoplastics materials in pipe form by extrapolation (ISO 9080:2003) EN ISO 13760, Plastics pipes for the conveyance of fluids under pressure Miners rule Calculation method for cumulative damage (ISO 13760:1998) E
27、N ISO 15875-1, Plastics piping systems 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 158
28、75-3, Plastics piping systems for 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 1587
29、5-5:2003) EN ISO 15876-1, Plastics 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
30、systems for hot and cold water installations Polybutylene (PB) Part 3: Fittings (ISO 15876-3:2003) Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 10/06/2010 02:55, Uncontrolled Copy, (c) BSIBS EN 15632-3:2010EN 15632-3:2010 (E) 6 EN ISO 15876-5, Plastics piping systems for hot and cold water
31、 installations Polybutylene (PB) Part 5: Fitness for purpose of the system (ISO 15876-5) EN ISO 21003-2, Multilayer piping systems for hot and cold water installations inside buildings Part 2: Pipes (ISO 21003-2:2008) ISO 10147, Pipes and fittings made of crosslinked polyethylene (PE-X) Estimation o
32、f the degree of crosslinking by determination of the gel content ISO 17455, Plastics piping systems Multilayer pipes Determination of the oxygen permeability of the barrier pipe 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 15632-1:2009 apply. 4 Cla
33、ssification 4.1 Operating temperatures and service life Pipe systems according to this European Standard are designed for a service life of at least 30 years when operated at 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
34、applied in accordance with EN ISO 13760 (Miners Rule). Further information is given in EN 15632-2:2009, Annex A. The maximum 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, 8 o
35、r 10 bar. Table 1 defines maximum SDR ratios of the service pipe required to withstand the operating pressures. 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 th
36、icknesses shall be calculated according to the methods defined in EN ISO 21003-2 The SDR ratios in Table 1 are based on the regression curves of EN ISO 15875 and EN ISO 15876. Higher SDR ratios may be applied, if they are based on regression curves developed in accordance with EN ISO 9080. 4.3 Gener
37、al requirements In addition to the general requirements defined in EN 15632-1 the following product specific requirements shall apply. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 10/06/2010 02:55, Uncontrolled Copy, (c) BSIBS EN 15632-3:2010EN 15632-3:2010 (E) 7 4.4 Service pipes and fitt
38、ings 4.4.1 Quality Plastics service pipes and fittings shall comply with: 1) EN ISO 15875-1, EN ISO 15875-2, EN ISO 15875-3 and EN ISO 15875-5 for pipes made of cross linked polyethylene (PE-X, for PE-Xb see also Annex B), 2) EN ISO 15876-1, EN ISO 15876-2, EN ISO 15876-3 and EN ISO 15876-5 for pipe
39、s made of polybutylene (PB), 3) for multi-layer pipes EN ISO 21003-2. Deviating from these standards, temperature cycle tests on pipe systems and fittings shall be carried out with test cycle numbers specified in 5.2. 4.4.2 Oxygen tightness The oxygen diffusion of service pipes shall not exceed 3.6
40、mg/md at 80C when tested in accordance with ISO 17455. NOTE The value of 3,6 mg/m2d is state of the art at general heating applications. A maximum diffusion rate of 0,8 mg/m2d is recommended for district heating purposes. 4.5 Sealing in linear direction The manufacturer of the system shall offer com
41、ponents to stop leakage in the linear direction at the end of each pipe section. These components shall be water tight when tested according to water tightness test of EN 489 (without the box load test). 4.6 Water vapour permeation The pipe supplier shall give information about the risk of the water
42、 accumulation in the insulation dependent on the service conditions. NOTE PE-X and PB pipes are slightly open for diffusion of water from the media to the insulation. The rate of diffusion is increasing with the temperature. The casing is likewise open for diffusion from the insulation to the soil.
43、The rate of this diffusion is depending upon the casing temperature and the water vapour partial pressure difference over the casing wall. For 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
44、is limited and not detrimental to the function although a certain loss of insulation capacity may be expected. 5 Test procedures 5.1 General Unless stated otherwise, all tests are to be carried out: 1) no sooner than 72 hours after production; 2) at room temperature; 3) on samples taken from coiled
45、pipes. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 10/06/2010 02:55, Uncontrolled Copy, (c) BSIBS EN 15632-3:2010EN 15632-3:2010 (E) 8 5.2 Temperature cycle test The minimum test cycles and the cycle times for service pipe system tests are given in Table 2. Table 2 Test cycles Service pip
46、e 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 250 60 min Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 10/06/2010 02:55, Uncontrolled Copy, (c) BSIBS EN 15632-3:2010EN 15632-3:2010 (E) 9 Annex A (informative) Application of Miners Ru
47、le For plastic service pipes the lifetime is influenced by the temperature profile. For this European Standard a calculatory temperature profile has been used. The lifetime is calculated by applying Miners Rule. For other temperature profiles new calculations have to be made. District Heating system
48、s are usually operated at various flow temperatures according to the necessary heat load. When the actual temperature profile is deviating from the standard profile, the system supplier should provide calculations applying Miners Rule based on the information given in Table A.1: Table A.1 Examples f
49、or applying Miners Rule Operating Temperature C Example 1Operating time per year h Example 2Operating time per year h Example 3Operating time per year h 95 3,3 0 0 90 292 50 50 85 0 100 1000 80 8468 200 3450 75 0 2000 1000 70 0 2410 0 65 0 4000 0 60 0 0 0 total 8763,3 8760 5500 The total operation time should comply with the annual operation time (max. 8 760 hours). For systems operating only for the heating period, the annual operation time might be b
