1、raising standards worldwide NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BSI Standards Publication BS EN 1555-2:2010 Plastics piping systems for the supply of gaseous fuels Polyethylene (PE) Part 2: PipesBS EN 1555-2:2010 BRITISH STANDARD National foreword This British Stan
2、dard is the UK implementation of EN 1555-2:2010. It supersedes BS EN 1555-2:2002 which is withdrawn. Together with which is withdrawn. The UK participation in its preparation was entrusted by Technical Committee PRI/88, Plastics piping systems, to Subcommittee PRI/88/2, Plastics piping for pressure
3、applications. A list of organizations represented on this subcommittee can be obtained on request to its secretary. NOTE 1 There is no Part 6 in the EN 1555 series. Instead users of BS EN 1555 should refer to EN 12007-2, Gas supply systems Pipelines for maximum operating pressure up to and including
4、 16 bar Part 2: Specific functional recommendations for polyethylene (MOP up to and including 10 Bar). Users of this standard are also referred to the guidance issued by National Grid, for example T/PR/ML/4 - Work procedure for pipe system construction. NOTE 2 Part 7 of the EN 1555 series has been p
5、repared as a CEN/TS to allow further development. CEN/TS 1555-7 is not mandatory under the Public Procurement Directives (2004/18/EC and 2004/17/EC). Users should be aware of any appropriate safety precautions relating to pipework for combustable gas, such as the National Grid Gas document T/PR/ML/4
6、, Work procedure for pipe system construction Module 4 PE main laying up to an including 630 mm diameter at pressures up to and including 2 bar. It is assumed in the drafting of a standard that the execution of its provisions is entrusted to appropriately qualified and competent people. National Ann
7、ex NA provides additional information on the selection and installation of piping systems and components in the UK. Attention is drawn to the following statutory regulation: Health 91.140.40 Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was p
8、ublished under the authority of the Standards Policy and Strategy Committee on 30 November 2010. Amendments issued since publication DateText affected BS EN 1555-1:2010 and BS EN 1555-5:2010, it supersedes BS 7281:1990 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1555-2 September 2010 ICS 23
9、.040.20; 91.140.40 Supersedes EN 1555-2:2002 English Version Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 2: Pipes Systmes de canalisations en plastique pour la distribution de combustibles gazeux - Polythylne (PE) - Partie 2 : Tubes Kunststoff-Rohrleitungssyste
10、me fr die Gasversorgung Polyethylen (PE) - Teil 2: Rohre 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 without an
11、y 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 made
12、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, Finlan
13、d, 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 EUROPISCHES KOM
14、ITEE 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 1555-2:2010: EBS EN 1555-2:2010 EN 1555-2:2010 (E) 2 Contents Page Foreword 4 Introduction . 6 1 Scope 7 2 No
15、rmative references 7 3 Terms and definitions, symbols and abbreviations . 8 4 Material . 8 4.1 Compound for pipes 8 4.2 Compound for identification stripes 9 4.3 External reprocessable and recyclable material 9 5 General characteristics . 9 5.1 Appearance 9 5.2 Colour . 9 6 Geometrical characteristi
16、cs 9 6.1 Measurement of dimensions 9 6.2 Mean outside diameters, out-of-roundness (ovality) and tolerances 9 6.3 Wall thicknesses and related tolerances 10 6.3.1 Minimum wall thicknesses 10 6.3.2 Tolerance on the wall thicknesses 11 6.4 Circumferential reversion of pipes with a d nequal to or greate
17、r than 250 mm 12 6.5 Coiled pipe 13 6.6 Lengths .13 7 Mechanical characteristics .13 7.1 Conditioning .13 7.2 Requirements .13 7.3 Retest in case of failure at 80 C 15 8 Physical characteristics 15 8.1 Conditioning .15 8.2 Requirements .15 9 Performance requirements .16 10 Marking .16 10.1 General 1
18、6 10.2 Minimum required marking .17 10.3 Additional marking 17 Annex A (normative) Pipes with co-extruded layers .18 A.1 General 18 A.2 Geometrical characteristics 18 A.3 Mechanical characteristics .18 A.4 Physical characteristics 18 A.5 Marking .18 A.6 Delamination 18 BS EN 1555-2:2010 EN 1555-2:20
19、10 (E) 3 A.7 Integrity of the structure . 19 Annex B (normative) Pipes with peelable layer . 20 B.1 General . 20 B.2 Geometrical characteristics . 20 B.3 Mechanical characteristics . 20 B.4 Physical characteristics 20 B.5 Coating adhesion 20 B.6 Marking . 21 Annex C (normative) Squeeze-off technique
20、 . 22 C.1 General Squeeze-off technique 22 C.2 Definitions 22 C.3 Test method . 22 Bibliography 23 BS EN 1555-2:2010 EN 1555-2:2010 (E) 4 Foreword This document (EN 1555-2:2010) has been prepared by Technical Committee CEN/TC 155 “Plastics piping systems and ducting systems”, the secretariat of whic
21、h 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 is drawn to the possibili
22、ty 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 1555-2:2002. It has been prepared in liaison with Technical Committee CEN/TC 234 “Gas infrast
23、ructure“. System Standards are based on the results of the work being undertaken in ISO/TC 138 “Plastics pipes, fittings and valves for the transport of fluids“, which is a Technical Committee of the International Organization for Standardization (ISO). They are supported by separate standards on te
24、st methods to which references are made throughout the System Standard. The System Standards are consistent with general standards on functional requirements and on recommended practice for installation. EN 1555 consists of the following parts: EN 1555-1, Plastics piping systems for the supply of ga
25、seous fuels Polyethylene (PE) Part 1: General; EN 1555-2, Plastics piping systems for the supply of gaseous fuels Polyethylene (PE) Part 2: Pipes (this standard); EN 1555-3, Plastics piping systems for the supply of gaseous fuels Polyethylene (PE) Part 3: Fittings; prEN 1555-4, Plastics piping syste
26、ms 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; CEN/TS 1555-7, Plastics piping systems for the supply of gaseous fuels Polyethylene (PE) Part 7: Guidan
27、ce for assessment of conformity. 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). BS EN 1555-2:2010 EN 1555-2:2010 (E) 5 According to the CEN/CENELEC Internal Regul
28、ations, 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Mal
29、ta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 1555-2:2010 EN 1555-2:2010 (E) 6 Introduction The System Standard, of which this is Part 2, specifies the requirements for a piping system and its components made from pol
30、yethylene (PE) and which is intended to be used for the supply of gaseous fuels. Requirements and test methods for material and components, other than pipes, are specified in EN 1555-1, EN 1555-3 7 and prEN 1555-4 8. Characteristics for fitness for purpose are covered in EN 1555-5. CEN/TS 1555-7 2 g
31、ives guidance for assessment of conformity. Recommended practice for installation is given in EN 12007-2:2000 1 prepared by CEN/TC 234. This part of EN 1555 covers the characteristics of pipes. BS EN 1555-2:2010 EN 1555-2:2010 (E) 7 1 Scope This part of EN 1555 specifies the characteristics of pipes
32、 made from polyethylene (PE) for piping systems in the field of the supply of gaseous fuels. It also specifies the test parameters for the test methods referred to in this standard. In conjunction with Parts 1 and 3 to 5 of EN 1555, it is applicable to PE pipes, their joints and to joints with compo
33、nents of PE and other materials intended to be used under the following conditions: a) a maximum 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 E
34、N 1555-5. EN 1555 covers a range of maximum operating pressures and gives requirements concerning colours and additives. It covers three types of pipe: PE pipes (outside diameter d n ) including any identification stripes; PE pipes with co-extruded layers on either or both the outside and/or inside
35、of the pipe (total outside diameter d n ) as specified in Annex A, where all layers have the same MRS rating; PE pipes (outside diameter d n ) with a peelable, contiguous thermoplastics additional layer on the outside of the pipe (coated pipe) as specified in Annex B. NOTE 2 It is the responsibility
36、 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 The following referenced documents are indispensable for the appli
37、cation 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 supply of gaseous fuels Polyethylene (PE) Part 1: General EN 1555-5
38、, Plastics piping systems for the supply of gaseous fuels Polyethylene (PE) Part 5: Fitness for purpose of the system EN 12106, Plastics piping systems Polyethylene (PE) pipes Test method for the resistance to internal pressure after application of squeeze-off EN ISO 1133:2005, Plastics Determinatio
39、n of the melt mass-flow rate (MFR) and the melt volume-flow rate (MVR) of thermoplastics (ISO 1133:2005) 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) 1) 1 b
40、ar = 0,1 MPa. BS EN 1555-2:2010 EN 1555-2:2010 (E) 8 EN ISO 1167-2, Thermoplastics pipes, fittings and 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 2505, Thermoplastics pipes Longitudinal
41、 reversion Test method and parameters (ISO 2505:2005) EN ISO 3126, Plastics piping systems Plastics components Determination of dimensions (ISO 3126:2005) EN ISO 6259-1, Thermoplastics pipes Determination of tensile properties Part 1: General test method (ISO 6259-1:1997) EN ISO 9969, Thermoplastics
42、 pipes Determination of ring stiffness (ISO 9969:2007) 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 13478, Thermoplastics pipes for the conveyance of fluids
43、 Determination of resistance to rapid crack propagation (RCP) Full scale test (FST) (ISO 13478:2007) EN ISO 13479:2009, Polyolefin pipes for the conveyance of fluids Determination of resistance to crack propagation Test method for slow crack growth on notched pipes (ISO 13479:2009) EN ISO 13968, Pla
44、stics piping and ducting systems Thermoplastics pipes Determination of ring flexibility (ISO 13968:2008) ISO 4065:1996, Thermoplastics pipes Universal wall thickness table ISO 6259-3, Thermoplastics pipes Determination of tensile properties Part 3: Polyolefin pipes ISO 11357-6, Plastics Differential
45、 scanning calorimetry (DSC) Part 6: Determination of oxidation induction time (isothermal OIT) and oxidation induction temperature (dynamic OIT) ISO 13480, Polyethylene pipes Resistance to slow crack growth Cone test method 3 Terms and definitions, symbols and abbreviations For the purposes of this
46、document the terms and definitions, symbols and abbreviations given in EN 1555-1:2010 apply. 4 Material 4.1 Compound for pipes The pipes shall be made from virgin material or own reprocessable material from the same PE compound or a mixture of both materials. Reprocessable material from coextruded p
47、ipes or from pipes reprocessed with the peelable layer attached shall not be used. Own reprocessed material from the base pipe of peelable layer pipes can be used. The compound(s) from which the pipes are made shall conform to EN 1555-1. BS EN 1555-2:2010 EN 1555-2:2010 (E) 9 4.2 Compound for identi
48、fication stripes For black pipe with yellow or orange identifications stripes (see also 5.2), the compound used for these identification stripes shall be made from the same base polymer (PE) as one of the pipe compounds for which fusion compatibility has been proven. 4.3 External reprocessable and recyclable material Reprocessable material obtained from external sources and recyclable material shall not be used.
