1、raising standards worldwide NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BSI Standards Publication BS EN 1555-5:2010 Plastics piping systems for the supply of gaseous fuels Polyethylene (PE) Part 5: Fitness for purpose of the systemBS EN 1555-5:2010 BRITISH STANDARD Nationa
2、l foreword This British Standard is the UK implementation of EN 1555-5:2010. It supersedes BS EN 1555-5:2002 which is withdrawn. Together with EN 1555-1:2010 and EN 1555-2:2010, it supersedes BS 7281:1990 which is withdrawn. The UK participation in its preparation was entrusted by Technical Committe
3、e PRI/88, Plastics piping systems, to Subcommittee PRI/88/2, Plastics piping for pressure 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 E
4、N 12007-2, Gas supply systems Pipelines for maximum operating pressure up to and including 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 - W
5、ork procedure for pipe system construction. NOTE 2 Part 7 of the EN 1555 series has been prepared as a CEN/TS to allow fur - ther 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 precautio
6、ns relating to pipework for combustable gas, such as the National Grid Gas document T/PR/ML/4, 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
7、 of its provisions is entrusted to appropriately qualified and competent people. National Annex 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
8、a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 November 2010. Amendments issued since publication Date Text affected BS BS EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM
9、 EN 1555-5 September 2010 ICS 23.040.01; 91.140.40 Supersedes EN 1555-5:2002 English Version Plastics piping 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 - Pol
10、ythylne (PE) - Partie 5: Aptitude lemploi du systme Kunststoff-Rohrleitungssysteme fr die Gasversorgung - 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
11、 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 to the CEN Management Centre or to any CEN member. This Europe
12、an 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 Management Centre has the same status as the official versions. CEN members are the nati
13、onal standards bodies of 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, Switzer
14、land 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 rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN
15、 1555-5:2010: EBS EN 1555-5:2010 EN 1555-5:2010 (E) 2 Contents Page Foreword 3 Introduction . 4 1 Scope 5 2 Normative references . 5 3 Terms and definitions . 6 4 Fitness for purpose . 7 4.1 Method of preparation of assemblies for testing . 7 4.1.1 General 7 4.1.2 Butt fusion joints 7 4.1.3 Electrof
16、usion jointing 7 4.1.4 Mechanical joints . 7 4.2 Requirements for fitness for purpose . 7 4.2.1 General 7 4.2.2 Fitness for purpose of butt fusion joints . 8 4.2.3 Fitness for purpose for electrofusion joints . 9 4.2.4 Fitness for purpose for mechanical joints 10 4.3 Conditioning . 10 4.4 Requiremen
17、ts . 10 4.5 Retest in case of failure at 80 C 11 5 Design coefficient . 12 Annex A (informative) Derating coefficients for operating temperatures . 13 Annex B (normative) Rapid crack propagation (RCP) resistance of pipe at temperature less than 0 C 14 Bibliography 15 BS EN 1555-5:2010 EN 1555-5:2010
18、 (E) 3 Foreword This document (EN 1555-5:2010) has been prepared by Technical Committee CEN/TC 155 “Plastics piping systems and ducting systems”, 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 te
19、xt 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 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
20、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, Plastics 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 Po
21、lyethylene (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 for the supply of gaseous fuels Polyethylene (PE) Part 4: Valves; EN 1555-5, Plastics piping systems for the supply of gaseous fu
22、els Polyethylene (PE) Part 5: Fitness for purpose of the system (this standard); CEN/TS 1555-7, Plastics piping systems for the supply of gaseous fuels Polyethylene (PE) Part 7: Guidance for assessment of conformity. System Standards are supported by separate standards on test methods to which refer
23、ences are made throughout the System Standard. The System Standards are consistent with general standards on functional requirements and on recommended practice for installation. NOTE EN 12007-2:2000 1 prepared by CEN/TC 234 “Gas infrastructure” deals with the recommended practice for installation o
24、f plastics pipes system in accordance with EN 1555 (all parts). 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, Esto
25、nia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 1555-5:2010 EN 1555-5:2010 (E) 4 Introduction The System Standar
26、d, of which this is Part 5, specifies the requirements of a piping system and its components made from polyethylene (PE) and which is intended 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 pr
27、EN 1555-4. CEN /TS 1555-7 2 gives 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 fitness for purpose of the system. BS EN 1555-5:2010 EN 1555-5:2010 (E) 5 1 Scope T
28、his part of EN 1555 specifies requirements of fitness for purpose of the polyethylene (PE) piping system in the field of the supply of 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
29、 tests to be carried out on these joints for assessing the fitness for purpose of the system under normal and extreme conditions. It specifies 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, v
30、alves, their joints and to joints with components of 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, derati
31、ng coefficients should be used, see Annex A. EN 1555 (all parts) covers a range of maximum operating pressures and gives requirements concerning colours and additives. NOTE 2 It is the responsibility of the purchaser or specifier to make the appropriate selections from these aspects, taking into acc
32、ount their particular requirements and any relevant national regulations and installation practices or codes. 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
33、, 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 1555-2:2010, Plastics piping systems for the supply of gaseous fuels Polyethylene (PE) Part 2: Pipes EN 155
34、5-3, Plastics piping systems for the supply of gaseous fuels Polyethylene (PE) Part 3: Fittings prEN 1555-4, Plastics piping systems for 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 Determi
35、nation of the resistance to internal pressure Part 1: General method (ISO 1167-1:2006) 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 1167-
36、4, Thermoplastics pipes, fittings and assemblies for the conveyance of fluids Determination of the resistance to internal pressure Part 4: Preparation of assemblies (ISO 1167-4:2007) 1) 1 bar = 0,1 MPa. BS EN 1555-5:2010 EN 1555-5:2010 (E) 6 EN ISO 13477, Thermoplastics pipes for the conveyance of f
37、luids 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 Determination of resistance to rapid crack propagation (RCP) Full scale test (FST) (ISO 13478:2007) ISO 10838-1
38、2) , Mechanical fittings for polyethylene piping systems for the supply of gaseous fuels Part 1: Metal fittings for pipes of nominal 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 fitting
39、s for pipes of nominal outside diameter greater than 63 mm ISO 10838-3 2) , Mechanical fittings for polyethylene piping systems for the 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 fitting
40、s Preparation of test piece assemblies between a polyethylene (PE) pipe and an electrofusion fitting ISO 11414:2009, Plastics pipes and fittings Preparation of polyethylene (PE) pipe/pipe or pipe/fitting test piece assemblies by butt fusion ISO 13953, Polyethylene (PE) pipes and fittings Determinati
41、on of the tensile strength and failure mode of test pieces from a butt-fused joint ISO 13954, Plastics pipes and fittings Peel decohesion test for polyethylene (PE) electrofusion assemblies of nominal outside diameter greater than or equal to 90 mm ISO 13955, Plastics pipes and fittings Crushing dec
42、ohesion test for polyethylene (PE) electrofusion assemblies ISO/FDIS 13956, Plastics pipes and fittings Determination of cohesive strength 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
43、abbreviations given in EN 1555-1:2010 and the following definition apply. 3.1 mechanical joint joint made by assembling a PE pipe with 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
44、 the pipe bore should be used to provide a permanent support for the PE pipe to prevent creep in the pipe wall under radial compressive 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) T
45、hese standards are under revision. BS EN 1555-5:2010 EN 1555-5:2010 (E) 7 4 Fitness for purpose 4.1 Method of preparation of assemblies 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. Tes
46、t pieces for pressure test shall be closed with pressure-tight, end-load-bearing end caps, plugs or flanges which shall be provided 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
47、 Butt fusion joints PE pipes, spigot end fittings and valves intended to be used for jointing by butt fusion shall be prepared and 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 cond
48、itions and in 4.2.2.2 for the assessment of fitness for purpose under extreme conditions. 4.1.3 Electrofusion jointing PE pipes, fittings 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 t
49、he 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 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 allowa
