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

This document specifies the characteristics of pipes made from polyethylene (PE) for piping systems in the field of the supply of gaseous fuels.
NOTE 1   Additional information related to the installation of PE 100-RC systems is given in prEN 1555-1:2024, Annex A.
NOTE 2   Additional information about the suitability of PE pipe systems for hydrogen and its admixtures is given in prEN 1555-1:2024, Annex B.
It also specifies the test parameters for the test methods referred to in this document.
In conjunction with EN 1555-1, EN 1555-3, EN 1555-4 and EN 1555-5, this document is applicable to PE pipes, fittings and valves, their joints, and 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  at a design reference temperature of 20 °C;
b)   an operating temperature between −20 °C and 40 °C.
For operating temperatures between 20 °C and 40 °C derating coefficients are defined in EN 1555-5.
The EN 1555 series covers a range of MOPs and gives requirements concerning colours.
This document is applicable to 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 PE layers have the same MRS rating;
-   PE pipes (outside diameter dn) with a peelable and contiguous thermoplastics additional layer on the outside of the pipe ("coated pipe") as specified in Annex B.
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 guidance or regulations and installation practices or codes.

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

Dieses Dokument legt die Eigenschaften von Rohren aus Polyethylen (PE) für Rohrleitungssysteme im Bereich der Versorgung mit gasförmigen Brennstoffen fest.
ANMERKUNG 1   Zusätzliche Informationen bezüglich der Verlegung von PE 100 RC Systemen sind in prEN 1555-1:2024, Anhang A angegeben.
ANMERKUNG 2   Zusätzliche Informationen über die Eignung von PE Rohrsystemen für Wasserstoff und dessen Beimischungen sind in prEN 1555 1:2024, Anhang B angegeben.
Es legt auch die Prüfparameter für die Prüfverfahren fest, auf die in diesem Dokument verwiesen wird.
In Verbindung mit EN 1555-1, EN 1555-3, EN 1555-4 und EN 1555-5 ist dieses Dokument anwendbar für Rohre, Formstücke und Armaturen aus PE, deren Verbindungen sowie Verbindungen mit Rohrleitungsteilen aus PE und anderen Werkstoffen, die für die Verwendung unter den folgenden Bedingungen vorgesehen sind:
a)   für einen höchstzulässigen Betriebsdruck MOP (en: maximum operating pressure) bis einschließlich 10 bar  bei einer Bemessungs Bezugstemperatur von 20 °C;
b)   für eine Betriebstemperatur zwischen −20 °C und 40 °C.
Für Betriebstemperaturen zwischen 20 °C und 40 °C sind Minderungsfaktoren festgelegt in EN 1555-5.
Die Normenreihe EN 1555 deckt einen Bereich von MOPs ab und enthält Anforderungen bezüglich Farben.
Dieses Dokument ist für drei Arten von Rohren anwendbar:
-   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 PE Schichten den gleichen MRS Wert aufweisen;
-   PE Rohre (Außendurchmesser dn) mit einer abziehbaren und zusätzlichen thermoplastischen Schicht, anliegend auf der Außenfläche des Rohres („beschichtetes Rohr“), wie in Anhang B festgelegt.
Es liegt in der Verantwortung des Auftraggebers oder Planers, aus diesen Kriterien die geeignete Auswahl zu treffen, unter Berücksichtigung ihrer speziellen Anforderungen und jeglicher maßgebender nationaler Anleitungen oder Festlegungen und Verfahrensweisen oder Vorschriften für die Verlegung.

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

Le présent document spécifie les caractéristiques des tubes en polyéthylène (PE) pour les systèmes de canalisations destinés à la distribution de combustibles gazeux.
NOTE 1   Des informations additionnelles concernant la pose de systèmes en PE 100 RC sont données dans le prEN 1555-1:2024, Annexe A.
NOTE 2   Des informations additionnelles sur l’aptitude à l’emploi des systèmes de canalisations en PE pour l’hydrogène et ses mélanges sont données dans le prEN 1555-:2024, Annexe B.
Il spécifie également les paramètres d’essai pour les méthodes d’essai référencées dans le présent document.
Conjointement avec l’EN 1555-1, l’EN 1555-3, l’EN 1555-4 et l’EN 1555-5, le présent document s’applique aux tubes, raccords et robinets en PE et à leurs assemblages, ainsi qu’aux assemblages avec des composants en PE et en d’autres matières, destinés à être utilisés dans les conditions suivantes :
a)   une pression maximale de service (MOP) inférieure ou égale à 10 bar , à une température de référence de calcul de 20 °C ;
b)   une température de service comprise entre -20 °C et 40 °C.
Pour des températures de service comprises entre 20 °C et 40 °C, les facteurs de réduction sont définis dans l’EN 1555-5.
La série EN 1555 couvre une gamme de MOP et donne les exigences concernant les couleurs.
Le présent document est applicable à trois types de tubes :
-   les tubes en PE (diamètre extérieur dn) y compris les bandes d’identification éventuelles ;
-   les tubes en PE comportant des couches coextrudées soit sur leur surface externe et/ou interne, soit sur leurs deux surfaces (diamètre extérieur total dn) tel que spécifié dans l’Annexe A, où toutes les couches de PE ont la même classification MRS ;
-   les tubes en PE (diamètre extérieur dn) comportant une couche supplémentaire thermoplastique contiguë et pelable sur leur surface externe (« tube revêtu »), tel que spécifié dans l’Annexe B.
Il est de la responsabilité de l’acheteur ou du concepteur du réseau d’effectuer les choix appropriés à partir de ces données, en tenant compte des exigences particulières et de toute ligne directrice ou toute réglementation nationale applicable, ainsi que des pratiques ou codes de pose.

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

General Information

Status
Not Published
Publication Date
10-Aug-2025
Current Stage
4060 - Closure of enquiry - Enquiry
Start Date
29-Aug-2024
Due Date
17-Jun-2024
Completion Date
29-Aug-2024

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SLOVENSKI STANDARD
01-julij-2024
Cevni sistemi iz polimernih materialov za oskrbo s plinastimi gorivi - Polietilen
(PE) - 2. del: Cevi
Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 2:
Pipes
Kunststoff-Rohrleitungssysteme für die Gasversorgung - Polyethylen (PE) - Teil 2: Rohre
Systèmes de canalisations en plastique pour la distribution de combustibles gazeux -
Polyéthylène (PE) - Partie 2 : Tubes
Ta slovenski standard je istoveten z: prEN 1555-2
ICS:
83.140.30 Polimerne cevi in fitingi za Plastics pipes and fittings for
snovi, ki niso tekočine non fluid use
91.140.40 Sistemi za oskrbo s plinom Gas supply systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2024
ICS 23.040.20 Will supersede EN 1555-2:2021
English Version
Plastics piping systems for the supply of gaseous fuels -
Polyethylene (PE) - Part 2: Pipes
Systèmes de canalisations en plastique pour la Kunststoff-Rohrleitungssysteme für die Gasversorgung
distribution de combustibles gazeux - Polyéthylène - Polyethylen (PE) - Teil 2: Rohre
(PE) - Partie 2 : Tubes
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 155.
If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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-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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 1555-2:2024 E
worldwide for CEN national Members.

Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Symbols and abbreviated terms . 8
5 Material . 8
5.1 Compound for pipes . 8
5.2 Compound for identification stripes . 8
5.3 External reworked and recycled material . 8
6 General characteristics . 9
6.1 Appearance . 9
6.2 Colour . 9
7 Geometrical characteristics . 9
7.1 Measurement of dimensions. 9
7.2 Mean outside diameters, out-of-roundness (ovality) and tolerances . 9
7.3 Wall thicknesses and related tolerances . 10
7.3.1 Minimum wall thicknesses . 10
7.3.2 Tolerance on the wall thicknesses . 12
7.4 Coiled pipe . 13
7.5 Lengths . 13
8 Mechanical characteristics . 14
8.1 Conditioning . 14
8.2 Requirements . 14
9 Physical characteristics . 19
9.1 Conditioning . 19
9.2 Requirements . 19
9.3 Circumferential reversion of pipes with d ≥ 250 mm . 20
n
10 Performance requirements . 20
11 Marking . 21
11.1 General . 21
11.2 Minimum required marking . 21
11.3 Additional marking . 22
Annex A (normative) Pipes with co-extruded layers . 23
A.1 General . 23
A.2 Material . 23
A.3 Geometrical characteristics . 23
A.4 Mechanical characteristics . 23
A.5 Physical characteristics . 23
A.6 Marking . 23
A.7 Delamination . 24
A.8 Integrity of the structure . 24
Annex B (normative) Pipes with peelable layer . 25
B.1 General . 25
B.2 Geometrical characteristics . 25
B.3 Mechanical characteristics . 25
B.4 Physical characteristics . 25
B.5 Peelable layer adhesion . 25
B.6 Marking . 25
Annex C (normative) Squeeze-off technique . 27
Bibliography . 28

European foreword
This document (prEN 1555-2:2024) has been prepared by Technical Committee CEN/TC 155 “Plastics
piping systems and ducting systems”, the secretariat of which is held by NEN.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 1555-2:2021.
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;
— 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 — Polyethylene (PE) — Part 5: Fitness
for purpose of the system;
In addition, the following document provides guidance on the assessment of conformity:
— CEN/TS 1555-7, Plastics piping systems for the supply of gaseous fuels — Polyethylene (PE) — Part 7:
Guidance for assessment of conformity.
The revision of this System Standard has been carried out to add reference to information related to the
suitability of PE pipe systems for 100 % hydrogen and its admixtures with natural gas.
NOTE EN 12007-2 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).

Introduction
The EN 1555 series specifies the requirements for a piping system and its components made from
polyethylene (PE) compounds, which is intended to be used for the supply of gaseous fuels.
This document covers the characteristics of pipes.
Requirements and test methods for materials and components, other than pipes, are specified in
EN 1555-1, EN 1555-3 and EN 1555-4.
Characteristics for fitness for purpose of the system are covered in EN 1555-5. CEN/TS 1555-7 gives
guidance for assessment of conformity.
Recommended practice for design, handling and installation is given in EN 12007-2.

1 Scope
This document specifies the characteristics of pipes made from polyethylene (PE) for piping systems in
the field of the supply of gaseous fuels.
NOTE 1 Additional information related to the installation of PE 100-RC systems is given in prEN 1555-1:2024,
Annex A.
NOTE 2 Additional information about the suitability of PE pipe systems for hydrogen and
...

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