Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 2: Pipes

This part of EN 1555 specifies the characteristics of pipes 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 components 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 FprEN 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 dn) including any identification stripes;
-   PE pipes with co-extruded layers on either or both the outside and/or inside of the pipe (total outside diameter dn) as specified in Annex A, where all layers have the same MRS rating;
-   PE pipes (outside diameter dn) 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 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.

Kunststoff-Rohrleitungssysteme für die Gasversorgung Polyethylen (PE) - Teil 2: Rohre

Dieser Teil von EN 1555 legt Anforderungen an Rohre aus Polyethylen (PE) fest, die in Rohrleitungssystemen für die Gasversorgung eingesetzt werden. Er legt auch die Prüfparameter für die Prüfverfahren fest, auf die in dieser Norm verwiesen wird. In Verbindung mit Teil 1 und den Teilen 3 bis 5 der EN 1555 gilt dieser Teil für Rohre aus PE, deren Ver-bindungen untereinander sowie mit Rohrleitungsteilen aus PE und anderen Werkstoffen, die für die Verwen-dung unter den folgenden Bedingungen vorgesehen sind: a) der maximal zulässige Betriebsdruck MOP beträgt höchstens 10 bar1); b) es gilt eine Betriebstemperatur von 20 °C als Bezugstemperatur. ANMERKUNG 1 Für andere Betriebstemperaturen können Minderungsfaktoren verwendet werden, siehe EN 1555-5. EN 1555 enthält Festlegungen über maximal zulässige Betriebsdrücke und legt Anforderungen an die Einfär-bung von Rohrleitungsteilen sowie die Verwendung von Zusatzstoffen fest. Drei Arten von Rohren werden behandelt: ⎯ PE-Rohre (Außendurchmesser dn) einschließlich sämtlicher Identifizierungsstreifen; ⎯ PE-Rohre mit koextrudierten Schichten auf der Außen- und/oder der Innenfläche des Rohres (Gesamt-Außendurchmesser dn), wie in Anhang A festgelegt, wobei alle Schichten den gleichen MRS-Wert auf-weisen; ⎯ PE-Rohre (Außendurchmesser dn) PE-Rohre mit schälbarem zusätzlichem thermoplastischem Schutz-mantel, anliegend auf der Außenfläche des Rohres („beschichtetes Rohr“), wie in Anhang B festgelegt. ANMERKUNG 2 Der Anwender bzw. Auftraggeber ist unter Berücksichtigung der eigenen Anforderungen sowie der geltenden nationalen Festlegungen und Verlegepraktiken für die entsprechende Auswahl dieser Kriterien verantwortlich.

Systèmes de canalisations en plastique pour la distribution de combustibles gazeux - Polyéthylène (PE) - Partie 2 : Tubes

La présente partie de l’EN 1555 spécifie les caractéristiques des tubes en polyéthylène (PE) pour les
systèmes de canalisations destinés à la distribution de combustibles gazeux.
Elle spécifie également les paramètres d'essai des méthodes d'essai auxquelles il est fait référence dans la
présente norme.
Conjointement avec les parties 1 et 3 à 5 de l’EN 1555, elle s'applique aux tubes en PE et à leurs
assemblages, ainsi qu'à leurs assemblages avec des composants en PE et autres matières, destinés à être
utilisés dans les conditions suivantes :
a) une pression maximale de service, MOP, jusqu’à et y compris 10 bar1 ;
b) une température de service de 20 °C, comme température de référence.
NOTE 1 Pour d'autres températures de service, il convient d’utiliser des facteurs de réduction, voir l’EN 1555-5.
L’EN 1555 couvre une gamme de pressions maximales de service et donne les exigences concernant les
couleurs et les additifs.
Elle couvre par ailleurs trois types de tube :
- les tubes en PE (diamètre extérieur dn) y compris toutes bandes d’identification éventuelles ;
- les tubes en PE comportant des couches co-extrudées soit sur leur surface externe ou interne, soit sur
leurs deux surfaces (diamètre extérieur total dn) tel que spécifié dans l’Annexe A, où toutes les couches
ont la même classification MRS ;
- les tubes en PE (diamètre extérieur dn) comportant une couche supplémentaire thermoplastique contiguë
pelable sur leur surface externe (« tube revêtu »), tel que spécifié à l’Annexe B.
NOTE 2 Il est de la responsabilité de l'acheteur ou du prescripteur de faire les choix appropriés de ces différents
aspects, en tenant compte des exigences particulières et des règlements nationaux correspondants, ainsi que des
pratiques ou des codes de pose.

Cevni sistemi iz polimernih materialov za oskrbo s plinastimi gorivi - Polietilen (PE) - 2. del: Cevi

Ta del EN 1555 določa značilnosti cevi iz polietilena (PE) za cevne sisteme na področju oskrbe s plinastimi gorivi. Določa tudi preskusne parametre za preskusne metode, navedene v tem standardu. Skupaj s 1. delom in 3. do 5. delom EN 1555 velja za PE cevi, njihove spoje in spoje s komponentami iz PE in drugih materialov, namenjenih za uporabo pod naslednjimi pogoji: a) najvišji obratovalni tlak MOP do in vključno z 10 bari; b) obratovalna temperatura 20 °C kot referenčna temperatura. EN 1555 zajema razpon najvišjih obratovalnih tlakov in podaja zahteve glede barv in aditivov. Zajema tri tipe cevi: cevi PE (zunaj premera dn) vključno z identifikacijskimi trakovi; cevi PE s koekstrudiranimi plastmi bodisi na zunanjosti bodisi na notranjosti cevi ali obojih (skupni zunanji premer dn), kot je določeno v Dodatku A, kjer imajo vse plasti isto oceno po MRS; cevi PE (zunaj premera dn) z neprekinjeno plastomerno dodatno plastjo na zunanji strani, ki se lahko odlepi (»prevlečena cev«), kot je določeno v Dodatku B.

General Information

Status
Withdrawn
Publication Date
07-Sep-2010
Current Stage
9960 - Withdrawal effective - Withdrawal
Completion Date
07-Jul-2021

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Cevni sistemi iz polimernih materialov za oskrbo s plinastimi gorivi - Polietilen (PE) - 2. del: CeviKunststoff-Rohrleitungssysteme für die Gasversorgung - Polyethylen (PE) - Teil 2: RohreSystèmes de canalisations en plastique pour la distribution de combustibles gazeux - Polyéthylène (PE) - Partie 2: TubesPlastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 2: Pipes91.140.40Sistemi za oskrbo s plinomGas supply systems83.140.30Cevi, fitingi in ventili iz polimernih materialovPlastics pipes, fittings and valvesICS:Ta slovenski standard je istoveten z:EN 1555-2:2010SIST EN 1555-2:2010en,fr,de01-december-2010SIST EN 1555-2:2010SLOVENSKI

STANDARDSIST EN 1555-2:20031DGRPHãþD
SIST EN 1555-2:2010
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1555-2
September 2010 ICS 23.040.20; 91.140.40 Supersedes EN 1555-2:2002English Version

Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 2: Pipes

Systèmes de canalisations en plastique pour la distribution de combustibles gazeux - Polyéthylène (PE) - Partie 2 : Tubes

Kunststoff-Rohrleitungssysteme für 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 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 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, Finland, 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
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR 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: ESIST EN 1555-2:2010

EN 1555-2:2010 (E) 2 Contents Page Foreword .............................................................................................................................................................. 4Introduction ......................................................................................................................................................... 61Scope ...................................................................................................................................................... 72Normative references ............................................................................................................................ 73Terms and definitions, symbols and abbreviations ........................................................................... 84Material ................................................................................................................................................... 84.1Compound for pipes .............................................................................................................................. 84.2Compound for identification stripes .................................................................................................... 94.3External reprocessable and recyclable material ................................................................................ 95General characteristics ......................................................................................................................... 95.1Appearance ............................................................................................................................................ 95.2Colour ..................................................................................................................................................... 96Geometrical characteristics .................................................................................................................. 96.1Measurement of dimensions ................................................................................................................ 96.2Mean outside diameters, out-of-roundness (ovality) and tolerances .............................................. 96.3Wall thicknesses and related tolerances ..........................................................................................106.3.1Minimum wall thicknesses ..................................................................................................................106.3.2Tolerance on the wall thicknesses ....................................................................................................116.4Circumferential reversion of pipes with a dn equal to or greater than 250 mm ............................126.5Coiled pipe ............................................................................................................................................136.6Lengths .................................................................................................................................................137Mechanical characteristics .................................................................................................................137.1Conditioning .........................................................................................................................................137.2Requirements .......................................................................................................................................137.3Retest in case of failure at 80 °C ........................................................................................................158Physical characteristics ......................................................................................................................158.1Conditioning .........................................................................................................................................158.2Requirements .......................................................................................................................................159Performance requirements .................................................................................................................1610Marking .................................................................................................................................................1610.1General ..................................................................................................................................................1610.2Minimum required marking .................................................................................................................1710.3Additional marking ..............................................................................................................................17Annex A (normative)

Pipes with co-extruded layers .....................................................................................18A.1General ..................................................................................................................................................18A.2Geometrical characteristics ................................................................................................................18A.3Mechanical characteristics .................................................................................................................18A.4Physical characteristics ......................................................................................................................18A.5Marking .................................................................................................................................................18A.6Delamination ........................................................................................................................................18SIST EN 1555-2:2010

EN 1555-2:2010 (E) 3 A.7Integrity of the structure ..................................................................................................................... 19Annex B (normative)

Pipes with peelable layer ............................................................................................. 20B.1General ................................................................................................................................................. 20B.2Geometrical characteristics ............................................................................................................... 20B.3Mechanical characteristics ................................................................................................................. 20B.4Physical characteristics...................................................................................................................... 20B.5Coating adhesion ................................................................................................................................ 20B.6Marking ................................................................................................................................................. 21Annex C (normative)

Squeeze-off technique ................................................................................................. 22C.1General Squeeze-off technique .......................................................................................................... 22C.2Definitions ............................................................................................................................................ 22C.3Test method ......................................................................................................................................... 22Bibliography ...................................................................................................................................................... 23 SIST 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 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 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 1555-2:2002. It has been prepared in liaison with Technical Committee CEN/TC 234 "Gas infrastructure". 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 test 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 gaseous 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 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;  CEN/TS 1555-7, Plastics piping systems for the supply of gaseous fuels  Polyethylene (PE)  Part 7: Guidance 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). SIST EN 1555-2:2010

EN 1555-2:2010 (E) 5 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, Estonia, 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. SIST 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 polyethylene (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] 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 pipes. SIST EN 1555-2:2010

EN 1555-2:2010 (E) 7 1 Scope This part of EN 1555 specifies the characteristics of pipes 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 components 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 EN 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 dn) including any identification stripes;  PE pipes with co-extruded layers on either or both the outside and/or inside of the pipe (total outside diameter dn) as specified in Annex A, where all layers have the same MRS rating;  PE pipes (outside diameter dn) 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 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 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 supply of gaseous fuels

Polyethylene (PE)

Part 1: General EN 1555-5, 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

Determination 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 bar = 0,1 MPa. SIST 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 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 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 — 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, Plastics 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 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 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 pipes 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. SIST EN 1555-2:2010

EN 1555-2:2010 (E) 9 4.2 Compound for identification 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. 5 General characteristics 5.1 Appearance When viewed without magnification, the internal and external surfaces of pipes shall be smooth and clean and shall have no scoring, cavities and other surface defects to an extent that would prevent conformity to this standard. The ends of the pipe shall be cut cleanly and square to the axis of the pipe. 5.2 Colour Pipes shall be black (PE 80 or PE 100), yellow (PE 80) or orange (PE 100). In addition black PE 80 pipes may be identified by yellow stripes and black PE 100 pipes may be identified by yellow or orange stripes, according to national preference. The outer coextruded layer of coextruded pipes (see Annex A) or the outer peelable layer of peelable layer pipes (see Annex B) shall be either black, yellow or orange. In addition identification stripes may be used according to national preference. NOTE 1 In some countries pipes made out of non-pigmented compound in conjunction with an external peelable layer are permitted, providing the compound conforms to the requirements of this document. If this is allowed in a country, this should be clearly stated in the national foreword. NOTE 2 National preference for colour should be stated in the national foreword. 6 Geometrical characteristics 6.1 Measurement of dimensions The dimensions of the pipe shall be measured in accordance with EN ISO 3126, and rounded to the next 0.1 mm. In case of dispute the measurement shall not be made less than 24 h after manufacture after being conditioned for at least 4 h at (23 ± 2) °C. NOTE Indirect measurement at the stage of production is allowed at shorter time periods providing evidence is shown of correlation. 6.2 Mean outside diameters, out-of-roundness (ovality) and tolerances The mean outside diameters of the pipe, dem shall conform to Table 1. For straight pipes, the maximum out-of-roundness shall conform to Table 1. For coiled pipes, the maximum out-of-roundness shall be specified by agreement between the manufacturer and the end-user. SIST EN 1555-2:2010

EN 1555-2:2010 (E) 10 Table 1  Mean outside diameters and out-of-roundness Dimensions in millimetres Nominal size DN/OD Nominal outside diameter Mean outside diameter Maximum out-of-roundness for straight pipes b c dn dem,min dem,max a 16 20 25 32 40

50 63 75 90 110
125 140 160 180 200
225 250 280 315 355
400 450 500 560 630 16 20 25 32 40
50 63 75 90 110
125 140 160 180 200
225 250 280 315 355
400 450 500 560 630 16,0 20,0 25,0 32,0 40,0
50,0 63,0 75,0 90,0 110,0
125,0 140,0 160,0 180,0 200,0
225,0 250,0 280,0 315,0 355,0
400,0 450,0 500,0 560,0 630,0 16,3 20,3 25,3 32,3 40,4
50,4 63,4 75,5 90,6 110,7
125,8 140,9 161,0 181,1 201,2
226,4 251,5 281,7 316,9 357,2
402,4 452,7 503,0 563,4 633,8 1,2 1,2 1,2 1,3 1,4
1,4 1,5 1,6 1,8 2,2
2,5 2,8 3,2
...

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