1、December 2010 Translation by DIN-Sprachendienst.English price group 11No 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).I
2、CS 23.040.01; 91.140.40!$ld“1736529www.din.deDDIN EN 1555-5Plastics piping systems for the supply of gaseous fuels Polyethylene (PE) Part 5: Fitness for purpose of the systemEnglish translation of DIN EN 1555-5:2010-12Kunststoff-Rohrleitungssysteme fr die Gasversorgung Polyethylen (PE) Teil 5: Gebra
3、uchstauglichkeit des SystemsEnglische bersetzung von DIN EN 1555-5:2010-12Systmes de canalisations en plastique pour la distribution de combustibles gazeux Polythylne (PE) Partie 5: Aptitude lemploi du systmeTraduction anglaise de DIN EN 1555-5:2010-12SupersedesDIN EN 1555-5:2003-04www.beuth.deDocum
4、ent comprises pagesIn case of doubt, the German-language original shall be considered authoritative.1712.10 DIN EN 1555-5:2010-12 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee CEN/TC 155 “Plastics piping systems and ducting systems” (
5、Secretariat: NEN, Netherlands). The responsible German body involved in its preparation was the Normenausschuss Kunststoffe (Plastics Standards Committee), Working Committee NA 054-05-08 AA Kunststoff-Rohrleitungssysteme fr die Gasversorgung. Amendments This standard differs from DIN EN 1555-5:2003-
6、04 as follows: a) the standard has been editorially revised; b) normative references have been updated. Previous editions DIN EN 1555-5: 2003-04 2 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1555-5 September 2010 ICS 23.040.01; 91.140.40 Supersedes EN 1555-5:2002English Version Plastics pip
7、ing systems for the supply of gaseous fuels - Polyethylene (PE) - Part 5: Fitness for purpose of the system Systmes de canalisations en plastique pour la distribution de combustibles gazeux - Polythylne (PE) - Partie 5: Aptitude lemploi du systme Kunststoff-Rohrleitungssysteme fr die Gasversorgung -
8、 Polyethylen (PE) - Teil 5: Gebrauchstauglichkeit des Systems This European Standard was approved by CEN on 30 July 2010. 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 witho
9、ut any alteration. Up-to-date lists and bibliographical references concerning 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
10、made by translation under the responsibility of a CEN member into its 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, Croatia, Cyprus, Czech Republic, Denmark, Estonia, F
11、inland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHE
12、S KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1555-5:2010: EEN 1555-5:2010 (E) 2 Contents Page Foreword 3Introduction . 41 Scope 52 Normative referenc
13、es . 53 Terms and definitions . 64 Fitness for purpose . 74.1 Method of preparation of assemblies for testing . 74.1.1 General 74.1.2 Butt fusion joints 74.1.3 Electrofusion jointing 74.1.4 Mechanical joints . 74.2 Requirements for fitness for purpose . 74.2.1 General 74.2.2 Fitness for purpose of b
14、utt fusion joints . 84.2.3 Fitness for purpose for electrofusion joints . 94.2.4 Fitness for purpose for mechanical joints 104.3 Conditioning . 104.4 Requirements . 104.5 Retest in case of failure at 80 C 115 Design coefficient . 12Annex A (informative) Derating coefficients for operating temperatur
15、es . 13Annex B (normative) Rapid crack propagation (RCP) resistance of pipe at temperature less than 0 C 14Bibliography 15DIN EN 1555-5:2010-12 EN 1555-5:2010 (E) 3 Foreword This document (EN 1555-5:2010) has been prepared by Technical Committee CEN/TC 155 “Plastics piping systems and ducting system
16、s”, the secretariat of which is held by NEN. 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 March 2011 and conflicting national standards shall be withdrawn at the latest by March 2011. Attention
17、 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 supersedes EN 1555-5:2002. EN 1555 consists of the following parts: EN 1555-1, Pl
18、astics piping systems for the supply of gaseous fuels Polyethylene (PE) Part 1: General; EN 1555-2, Plastics piping systems for the supply of gaseous fuels Polyethylene (PE) Part 2: Pipes; EN 1555-3, Plastics piping systems for the supply of gaseous fuels Polyethylene (PE) Part 3: Fittings; prEN 155
19、5-4, Plastics piping systems for the supply of gaseous fuels Polyethylene (PE) Part 4: Valves; EN 1555-5, Plastics piping systems for the supply of gaseous fuels Polyethylene (PE) Part 5: Fitness for purpose of the system (this standard); CEN/TS 1555-7, Plastics piping systems for the supply of gase
20、ous fuels Polyethylene (PE) Part 7: Guidance for assessment of conformity. System Standards are supported by separate standards on test methods to which references are made throughout the System Standard. The System Standards are consistent with general standards on functional requirements and on re
21、commended practice for installation. NOTE EN 12007-2:2000 1 prepared by CEN/TC 234 “Gas infrastructure” deals with the recommended practice for installation of plastics pipes system in accordance with EN 1555 (all parts). According to the CEN/CENELEC Internal Regulations, the national standards orga
22、nizations of the following countries are bound to implement this 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, Po
23、rtugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. DIN EN 1555-5:2010-12 EN 1555-5:2010 (E) 4 Introduction The System Standard, of which this is Part 5, specifies the requirements of a piping system and its components made from polyethylene (PE) and which is inte
24、nded to be used for the supply of gaseous fuels. Requirements and test methods for material and components are specified in EN 1555-1, EN 1555-2, EN 1555-3 and prEN 1555-4. CEN /TS 1555-7 2 gives guidance for assessment of conformity. Recommended practice for installation is given in EN 12007-2:2000
25、 1 prepared by CEN /TC 234. This part of EN 1555 covers the characteristics of fitness for purpose of the system. DIN EN 1555-5:2010-12 EN 1555-5:2010 (E) 5 1 Scope This part of EN 1555 specifies requirements of fitness for purpose of the polyethylene (PE) piping system in the field of the supply of
26、 gaseous fuels. It specifies the definitions of electrofusion, butt fusion and mechanical joints. It specifies the method of preparation of test piece joints, and the tests to be carried out on these joints for assessing the fitness for purpose of the system under normal and extreme conditions. It s
27、pecifies the test parameters for the test methods referred to in this standard. In conjunction with Parts 1 to 4 of EN 1555, it is applicable to PE pipes, fittings, valves, their joints and to joints with components of other materials intended to be used under the following conditions: a) a maximum
28、operating pressure, MOP, up to and including 10 bar 1); b) an operating temperature of 20 C as reference temperature. NOTE 1 For other operating temperatures, derating coefficients should be used, see Annex A. EN 1555 (all parts) covers a range of maximum operating pressures and gives requirements c
29、oncerning colours and additives. NOTE 2 It is the responsibility of the purchaser or specifier to make the appropriate selections from these aspects, taking into account their particular requirements and any relevant national regulations and installation practices or codes. 2 Normative references Th
30、e following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 1555-1:2010, Plastics piping systems for the sup
31、ply of gaseous fuels Polyethylene (PE) Part 1: General EN 1555-2:2010, Plastics piping systems for the supply of gaseous fuels Polyethylene (PE) Part 2: Pipes EN 1555-3, Plastics piping systems for the supply of gaseous fuels Polyethylene (PE) Part 3: Fittings prEN 1555-4, Plastics piping systems fo
32、r the supply of gaseous fuels Polyethylene (PE) Part 4: Valves EN ISO 1167-1:2006, Thermoplastics pipes, fittings and assemblies for the conveyance of fluids Determination of the resistance to internal pressure Part 1: General method (ISO 1167-1:2006) EN ISO 1167-2, Thermoplastics pipes, fittings an
33、d assemblies for the conveyance of fluids Determination of the resistance to internal pressure Part 2: Preparation of pipe test pieces (ISO 1167-2:2006) EN ISO 1167-4, Thermoplastics pipes, fittings and assemblies for the conveyance of fluids Determination of the resistance to internal pressure Part
34、 4: Preparation of assemblies (ISO 1167-4:2007) 1) 1 bar = 0,1 MPa. DIN EN 1555-5:2010-12 EN 1555-5:2010 (E) 6 EN ISO 13477, Thermoplastics pipes for the conveyance of fluids Determination of resistance to rapid crack propagation (RCP) Small-scale steady-state test (S4 test) (ISO 13477:2008) EN ISO
35、13478, Thermoplastics pipes for the conveyance of fluids Determination of resistance to rapid crack propagation (RCP) Full scale test (FST) (ISO 13478:2007) ISO 10838-1 2), Mechanical fittings for polyethylene piping systems for the supply of gaseous fuels Part 1: Metal fittings for pipes of nominal
36、 outside diameter less than or equal to 63 mm ISO 10838-2 2), Mechanical fittings for polyethylene piping systems for the supply of gaseous fuels Part 2: Metal fittings for pipes of nominal outside diameter greater than 63 mm ISO 10838-3 2), Mechanical fittings for polyethylene piping systems for th
37、e supply of gaseous fuels Part 3: Thermoplastics fittings for pipes of nominal outside diameter less than or equal to 63 mm ISO 11413:2008, Plastics pipes and fittings Preparation of test piece assemblies between a polyethylene (PE) pipe and an electrofusion fitting ISO 11414:2009, Plastics pipes an
38、d fittings Preparation of polyethylene (PE) pipe/pipe or pipe/fitting test piece assemblies by butt fusion ISO 13953, Polyethylene (PE) pipes and fittings Determination of the tensile strength and failure mode of test pieces from a butt-fused joint ISO 13954, Plastics pipes and fittings Peel decohes
39、ion test for polyethylene (PE) electrofusion assemblies of nominal outside diameter greater than or equal to 90 mm ISO 13955, Plastics pipes and fittings Crushing decohesion test for polyethylene (PE) electrofusion assemblies ISO/FDIS 13956, Plastics pipes and fittings Determination of cohesive stre
40、ngth Evaluation of ductility of fusion joint interface by tear test 3 Terms and definitions For the purposes of this document, the terms and definitions, symbols and abbreviations given in EN 1555-1:2010 and the following definition apply. 3.1 mechanical joint joint made by assembling a PE pipe with
41、 a fitting that generally includes a compression part to provide for pressure integrity, leaktightness and resistance to end loads NOTE A support sleeve inserted into the pipe bore should be used to provide a permanent support for the PE pipe to prevent creep in the pipe wall under radial compressiv
42、e forces. The metallic part of this fitting can be assembled to a metallic pipe by screw threads, compression joints, welded or brazed flanges or by other means. 2) These standards are under revision. DIN EN 1555-5:2010-12 EN 1555-5:2010 (E) 7 4 Fitness for purpose 4.1 Method of preparation of assem
43、blies for testing 4.1.1 General The joints shall be made by using pipes conforming to EN 1555-2, fittings conforming to EN 1555-3 or valves conforming to prEN 1555-4. Test pieces for pressure test shall be closed with pressure-tight, end-load-bearing end caps, plugs or flanges which shall be provide
44、d with connections for the entry of water and release of air. The peelable layer of peelable layer pipe shall be removed in the area of the joint prior to jointing. 4.1.2 Butt fusion joints PE pipes, spigot end fittings and valves intended to be used for jointing by butt fusion shall be prepared and
45、 assembled in accordance with ISO 11414. The conditions for the preparation of the joints are given in 4.2.2.1 for the assessment of fitness for purpose under normal conditions and in 4.2.2.2 for the assessment of fitness for purpose under extreme conditions. 4.1.3 Electrofusion jointing PE pipes, f
46、ittings and valves intended to be used for jointing by electrofusion shall be prepared and assembled in accordance with ISO 11413. The conditions for the preparation of the joints are given in 4.2.3.1 for the assessment of fitness for purpose under normal conditions and in 4.2.3.2 for the assessment
47、 of fitness for purpose under extreme conditions. For joints with electrofusion saddle fittings, the electrofusion saddle fitting shall be fused to the pipe, while it is pneumatically pressurized to the allowable maximum operating pressure. The pipe shall be cut immediately after the manufacturer pr
48、escribed cooling time has elapsed. NOTE These joints with electrofusion saddle fitting should be prepared taking into consideration national safety regulations. For straight equal electrofusion socket fittings (couplers) test joints on selected diameters out of the product range shall be prepared wi
49、th a gap of 0,05dnbetween the pipe end and the maximum theoretical depth of penetration of the fitting, where for diameters greater than 225 mm the adjoining pipes shall be arranged to provide the maximum angular deflection possible for the fitting, limited to 1,5. 4.1.4 Mechanical joints For mechanical joints the assembly of the PE pipe and the fitting shall be prepared
