1、October 2012 Translation by DIN-Sprachendienst.English price group 13No 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).IC
2、S 23.040.20!$#/“1920012www.din.deDDIN EN 12007-2Gas infrastructure Pipelines for maximum operating pressure up to and including 16 bar Part 2: Specific functional requirements for polyethylene (MOP up to andincluding 10 bar);English version EN 12007-2:2012,English translation of DIN EN 12007-2:2012-
3、10Gasinfrastruktur Rohrleitungen mit einem maximal zulssigen Betriebsdruck bis einschlielich 16 bar Teil 2: Spezifische funktionale Anforderungen fr Polyethylen (MOP bis einschlielich10 bar);Englische Fassung EN 12007-2:2012,Englische bersetzung von DIN EN 12007-2:2012-10Infrastructures gazires Cana
4、lisations pour pression maximale de service infrieure ou gale 16 bar Partie 2: Exigences fonctionnelles spcifiques pour le polythylne (MOP infrieure ougale 10 bar);Version anglaise EN 12007-2:2012,Traduction anglaise de DIN EN 12007-2:2012-10SupersedesDIN EN 12007-2:2000-08www.beuth.deDocument compr
5、ises 30 pagesIn case of doubt, the German-language original shall be considered authoritative.10.12 2 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee CEN/TC 234 “Gas infrastructures” (Secretariat: DIN, Germany). The responsible German b
6、ody involved in its preparation was the Normenausschuss Gastechnik (Gas Technology Standards Committee), Working Committee NA 032-02-02 AA Gasverteilung. This European Standard describes, in addition to the general functional requirements of EN 12007-1, the specific functional requirements for the d
7、esign and construction of polyethylene (PE) pipelines including the joints between PE and other materials for a maximum operating pressure (MOP) up to and including 10 bar. Functional requirements for pressure testing, commissioning and decommissioning are given in EN 12327. In Germany, DVGW G 472,
8、GW 330, GW 331 and G 469 apply to the gas infrastructure covered by the present standard. These technical rules contain detailed specifications supplementing the requirements of the present standard. This standard has been included in the body of technical rules and standards for gas issued by the D
9、VGW Deutscher Verein des Gas- und Wasserfaches e.V. (German Technical and Scientific Association for Gas and Water). Amendments This standard differs from DIN EN 12007-2:2000-08 as follows: a) in the title of the German version, the term Empfehlung has been replaced by Anforderung (requirement); b)
10、the standard has been revised in form and substance; c) normative references have been updated; d) “3.12 peelable pipe” has been included in Clause 3 “Terms and definitions”; e) the information that new kinds of PE pipe products have been introduced in addition to the original PE 80 and PE 100 mater
11、ials has been added in Subclause 4.1; f) in Subclause 4.4, butt fusion and electrofusion have been specified as fusion jointing techniques for the construction of PE pipelines; g) in Subclause 5.2.2, the former reference to ISO 11413-4 has been replaced by a reference to ISO 21307; h) requirements r
12、elating to peelable pipes have been included in Annex B; i) Figure B.2 in Annex B has been replaced with a new drawing; reference is made to ISO 11414. Previous editions DIN EN 12007-2: 2000-08 DIN EN 12007-2:2012-10EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12007-2 August 2012 ICS 23.040.
13、20 Supersedes EN 12007-2:2000 English Version Gas infrastructure Pipelines for maximum operating pressure up to and including 16 bar Part 2: Specific functional requirements for polyethylene (MOP up to and including 10 bar) Infrastructures gazires Canalisations pour pression maximale de service infr
14、ieure ou gale 16 bar Partie 2: Exigences fonctionnelles spcifiques pour le polythylne (MOP infrieure ou gale 10 bar) Gasinfrastruktur Rohrleitungen mit einem maximal zulssigen Betriebsdruck bis einschlielich 16 bar Teil 2: Spezifische funktionale Anforderungen fr Polyethylen (MOP bis einschlielich 1
15、0 bar) This European Standard was approved by CEN on 24 May 2012. 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
16、references concerning such national standards may be obtained on application 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
17、a CEN member into its own language and notified to the CEN-CENELEC 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, Former Yugoslav Republic of Mace
18、donia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUR
19、OPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12007-2:2012: E EN 12007-2:2012 (E) 2 Contents Page Foreword 41 Scope 52 Normative references 53
20、Terms, definitions, symbols and abbreviations .64 Design .74.1 General 74.2 Materials and components .74.3 Maximum operating pressure .74.3.1 General 74.3.2 Verification of the overall service (design) coefficient 84.3.3 Verification of the RCP criterion 84.4 Assembly techniques . 104.5 Material pro
21、perties for flow stopping by squeeze-off . 104.6 Pipework inside buildings . 105 Construction 105.1 Storage, handling and transportation. 105.2 Jointing 115.2.1 General . 115.2.2 Fusion jointing 115.2.3 Mechanical joints 125.3 Laying 125.4 Connection to existing systems 135.4.1 Static electricity 13
22、5.4.2 Squeeze-off 136 Quality control . 146.1 Inspection prior to installation 146.2 Inspection during laying 146.2.1 Laying 146.2.2 Joint integrity 147 Pressure testing 14Annex A (informative) Storage, handling and transportation 16A.1 General . 16A.2 Storage . 16A.2.1 Storage conditions . 16A.2.2
23、Bundles 16A.2.3 Stacking loose straight pipes 17A.2.4 Drums and coils 17A.2.5 Storing . 17A.2.6 First in first out 18A.3 Handling . 18A.3.1 General . 18A.3.2 Handling in cold weather . 18A.3.3 Straight pipes 18A.3.4 Coils . 18A.3.5 Drums . 18A.3.6 Uncoiling 19A.4 Transportation . 19A.4.1 Straight pi
24、pes 19DIN EN 12007-2:2012-10EN 12007-2:2012 (E) 3 A.4.2 Coiled pipe . 19A.4.3 Drums . 19Annex B (informative) Fusion joint integrity 20B.1 General . 20B.2 Visual inspection criteria 20B.2.1 General . 20B.2.2 Butt fusion guidelines for the visual examination of butt fusion joints 20B.2.3 Electrofusio
25、n 23B.2.4 Ancillary tooling 26Annex C (informative) Technical changes between this European Standard and EN 12007-2:2000 27Bibliography 28DIN EN 12007-2:2012-10EN 12007-2:2012 (E) 4 Foreword This document (EN 12007-2:2012) has been prepared by Technical Committee CEN/TC 234 “Gas infrastructure”, the
26、 secretariat of which is held by DIN. 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 February 2013, and conflicting national standards shall be withdrawn at the latest by February 2013. Attention
27、 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 12007-2:2000. Annex C provides details of significant technical cha
28、nges between this European Standard and the previous edition. EN 12007 Gas infrastructure Pipelines for maximum operating pressure up to and including 16 bar consists of the following parts: Part 1: General functional requirements Part 2: Specific functional requirements for polyethylene (MOP up to
29、and including 10 bar)Part 3: Specific functional requirements for steel Part 4: Specific functional requirements for renovation Part 5: Specific functional recommendations of new service lines1According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following co
30、untries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
31、Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. 1To be published. DIN EN 12007-2:2012-10EN 12007-2:2012 (E) 5 1 Scope This European Standard describes the specific functional requirements for polyethylene (PE) pipelines in addition to the gen
32、eral functional requirements of EN 12007-1 for: a) a maximum operating pressure (MOP) up to and including 10 bar; b) an operating temperature between -20 C and +40 C. This European Standard covers three types of pipe: PE pipes including any identification stripes; PE pipes with co-extruded layers on
33、 either or both the outside and/or inside of the pipe; PE pipes with a peelable, contiguous thermoplastics additional layer on the outside of the pipe. This European Standard specifies common basic principles for gas infrastructure. Users of this European Standard should be aware that more detailed
34、national standards and/or code of practice may exist in the CEN member countries. This European Standard is intended to be applied in association with these national standards and/or codes of practice setting out the above-mentioned basic principles. In the event of conflicts in terms of more restri
35、ctive requirements in national legislation/regulation with the requirements of this European Standard, the national legislation/regulation takes precedence as illustrated in CEN/TR 13737 (all parts). CEN/TR 13737 (all parts) give: clarification of all legislations/regulations applicable in a member
36、state; if appropriate, more restrictive national requirements; a national contact point for the latest information. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only t
37、he edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. 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
38、Polyethylene (PE) Part 2: Pipes EN 1555-3, Plastics piping systems for the supply of gaseous fuels Polyethylene (PE) Part 3: Fittings EN 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 fuels
39、 Polyethylene (PE) Part 5: Fitness for purpose of the system EN 12327, Gas infrastructure Pressure testing, commissioning and decommissioning procedures Functional requirements DIN EN 12007-2:2012-10EN 12007-2:2012 (E) 6 ISO 12176-1, Plastics pipes and fittings Equipment for fusion jointing polyethy
40、lene systems Part 1: Butt fusion ISO 12176-2, Plastics pipes and fittings Equipment for fusion jointing polyethylene systems Part 2: Electrofusion 3 Terms, definitions, symbols and abbreviations For the purposes of this document, the following terms, definitions, symbols and abbreviations apply. 3.1
41、 nominal outside diameter dnspecified outside diameter 3.2 nominal wall thickness ennumerical designation of the wall thickness of a component, which is a convenient round number, approximately equal to the manufacturing dimension in millimetres 3.3 standard dimension ratio SDR number approximately
42、equal to the quotient of the nominal outside diameter and the nominal wall thickness 3.4 maximum operating pressure MOP maximum pressure at which a system can be operated continuously under normal operating conditions Note 1 to entry: Normal operating conditions are: no fault in any device or stream
43、. 3.5 maximum incidental pressure MIP maximum pressure which a system can experience during a short time limited by the safety devices 3.6 butt fusion joint method of jointing PE pipes and fittings where the two pipe ends are heated and brought together to be fused without the use of a separate fitt
44、ing or filler material 3.7 electrofusion joint method of jointing PE pipes, using fittings which have an integrated electric heating element 3.8 squeeze-off act of squeezing a pipe to prevent the flow of gas 3.9 minimum required strength MRS value of the lower confidence limit rounded down to the ne
45、xt lower value of the R10 series when the lower confidence limit is below 10 MPa, or to the next lower value of the R20 series when the lower confidence limit is 10 MPa or greater DIN EN 12007-2:2012-10EN 12007-2:2012 (E) 7 Note 1 to entry: R10 and R20 series are the Renard number series conforming
46、to ISO 3 and ISO 497. 3.10 lower confidence limit LCL quantity, expressed in MPa, which can be considered as a material property, representing the 97,5 % lower confidence limit of the predicted long term hydrostatic strength for water at 20 C for 50 years 3.11 critical rapid crack propagation pressu
47、re PRCPpressure level at which a rapid crack propagation (RCP) can occur in a PE pipeline, defined at a reference temperature Note 1 to entry: Reference temperature is 0 C. 3.12 peelable pipe PE pipes with a peelable, contiguous thermoplastics additional layer on the outside of the pipe for the purp
48、ose of marking and colour identification and intended to be removed for the purposes of making welds or fusing pipe and fittings 4 Design 4.1 General The PE 80 an PE 100 products are covered by CEN/TC 155, Plastics piping systems and ducting systems. Purchasing products to CEN standards can be part of a quality programme to ensure the safet
