SIST EN 1555-1:2025
(Main)Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 1: General
Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 1: General
This document specifies materials and the general aspects of polyethylene (PE) piping systems in the field of the supply of gaseous fuels.
NOTE For the purpose of this document the term gaseous fuels include for example natural gas, methane, butane, propane, hydrogen, manufactured gas, biogas, and mixtures of these gases.
It also specifies the test parameters for the test methods referred to in this document.
In conjunction with EN 1555-2, 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 specified in EN 1555-5.
The EN 1555 series covers a range of MOPs and gives requirements concerning colours.
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 1: Allgemeines
Dieses Dokument legt Werkstoffe und die allgemeinen Anforderungen an Rohrleitungssysteme aus Polyethylen (PE) fest, die in der Versorgung mit gasförmigen Brennstoffen eingesetzt werden.
ANMERKUNG Für die Anwendung dieses Dokuments umfasst der Begriff gasförmige Brennstoffe beispielsweise Erdgas, Methan, Butan, Propan, Wasserstoff, Industriegas, Biogas und Gemische aus diesen Gasen.
Es legt auch die Prüfparameter für die Prüfverfahren fest, auf die in diesem Dokument verwiesen wird.
In Verbindung mit EN 1555 2, EN 1555 3, EN 1555 4 und EN 1555 5 ist dieses Dokument anwendbar für Rohre, Formstücke und Armaturen aus PE, ihre Verbindungen und Verbindungen mit Rohrleitungsteilen aus PE und anderen Werkstoffen, die für die Verwendung unter den folgenden Bedingungen vorgesehen sind:
a) für einen maximal zulässigen Betriebsdruck MOP (en: maximum operating pressure) von höchstens 10 bar bei einer Bezugstemperatur von 20 °C für Bemessungszwecke;
b) für eine Betriebstemperatur von −20 °C bis 40 °C.
Für Betriebstemperaturen von 20 °C bis 40 °C sind Minderungsfaktoren festgelegt in EN 1555 5.
Die Normenreihe EN 1555 deckt einen Bereich von maximal zulässigen Betriebsdrücken ab und enthält Anforderungen bezüglich Farben.
Es liegt in der Verantwortung des Auftraggebers oder Planers, aus diesen Kriterien die geeignete Auswahl zu treffen, unter Berücksichtigung ihrer spezifischen Anforderungen und jeglicher relevanter nationaler Leitlinien oder Vorschriften und Verfahrensweisen oder Festlegungen für die Verlegung.
Systèmes de canalisations en plastique pour la distribution de combustibles gazeux - Polyéthylène (PE) - Partie 1 : Généralités
Le présent document spécifie les matières et les aspects généraux des systèmes de canalisations en polyéthylène (PE) dans le domaine de la distribution de combustibles gazeux.
NOTE Pour les besoins du présent document, le terme « combustible gazeux » inclut par exemple le gaz naturel, le méthane, le butane, le propane, l’hydrogène, le gaz manufacturé, le biogaz et les mélanges de ces gaz.
Il spécifie également les paramètres d’essai pour les méthodes d’essai référencées dans le présent document.
Conjointement avec l’EN 1555 2, 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 spécifiés dans l’EN 1555 5.
La série EN 1555 couvre une gamme de MOP et donne les exigences concernant les couleurs.
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) - 1. del: Splošno
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-december-2025
Cevni sistemi iz polimernih materialov za oskrbo s plinastimi gorivi - Polietilen
(PE) - 1. del: Splošno
Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 1:
General
Kunststoff-Rohrleitungssysteme für die Gasversorgung - Polyethylen (PE) - Teil 1:
Allgemeines
Systèmes de canalisations en plastique pour la distribution de combustibles gazeux -
Polyéthylène (PE) - Partie 1 : Généralités
Ta slovenski standard je istoveten z: EN 1555-1:2025
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.
EN 1555-1
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2025
EUROPÄISCHE NORM
ICS 23.040.01 Supersedes EN 1555-1:2021
English Version
Plastics piping systems for the supply of gaseous fuels -
Polyethylene (PE) - Part 1: General
Systèmes de canalisations en plastique pour la Kunststoff-Rohrleitungssysteme für die Gasversorgung
distribution de combustibles gazeux - Polyéthylène - Polyethylen (PE) - Teil 1: Allgemeines
(PE) - Partie 1 : Généralités
This European Standard was approved by CEN on 11 August 2025.
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-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 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.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1555-1:2025 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 8
3.1 Terms related to material characteristics . 8
3.2 Terms related to service conditions . 9
3.3 Terms related to joints . 10
4 Symbols and abbreviated terms . 10
4.1 Symbols. 10
4.2 Abbreviated terms . 11
5 Material . 12
5.1 Material of the components . 12
5.2 Compound . 12
5.2.1 Additives and pigments . 12
5.2.2 Colour . 12
5.2.3 Characteristics . 12
5.3 Fusion compatibility . 18
5.4 Classification and designation . 18
5.5 Design coefficient and design stress . 19
Annex A (informative) Additional information related to the installation of PE 100-RC systems . 20
A.1 Pipe material . 20
A.2 Installation conditions . 21
Annex B (informative) Additional information related to the suitability of PE pipe systems for
100 % hydrogen and its admixtures with natural gas . 23
B.1 General . 23
B.2 Chemical resistance . 23
B.3 Permeation . 24
Bibliography. 28
European foreword
This document (EN 1555-1:2025) has been prepared by Technical Committee CEN/TC 155 “Plastics piping 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 April 2026, and conflicting national standards shall be withdrawn at
the latest by April 2026.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 1555-1:2021.
The main changes are as follows:
— terms and definitions have been distributed over EN 1555-1, EN 1555-2 and EN 1555-3;
— a conversion and normalisation step has been included to the requirement for the CRB;
— EN ISO 1183-3 has been introduced as alternative test method for the compound density;
— recommended stress ranges for the CRB and stress levels for the AFNCT have been added;
— the strip-bend test (ISO 21751) and the crush test (ISO 13955) have been added as alternative to
ISO 13954;
— a requirement for the electrofusion compatibility has been added;
— information related to the suitability of PE pipe systems for 100 % hydrogen and its admixtures with nat-
ural gas has been added.
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
(this document);
— EN 1555-2, Plastics piping systems for the supply of gaseous fuels — 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 — 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.
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).
Any feedback and questions on this document should be directed to the users’ national standards body. A
complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations 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, Republic of North Macedonia, Romania,
Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the United Kingdom.
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 materials and the general aspects of the plastics piping system.
Requirements and test methods for components of the piping system are specified in EN 1555-2, 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 materials and the general aspects of polyethylene (PE) piping systems in the field of
the supply of gaseous fuels.
NOTE For the purpose of this document the term gaseous fuels include for example natural gas, methane, butane,
propane, hydrogen, manufactured gas, biogas, and mixtures of these gases.
It also specifies the test parameters for the test methods referred to in this document.
In conjunction with EN 1555-2, 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 specified in EN 1555-5.
The EN 1555 series covers a range of MOPs and gives requirements concerning colours.
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.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes
requirements 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 1555-2:2025, Plastics piping systems for the supply of gaseous fuels — 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 12099, Plastics piping systems — Polyethylene piping materials and components — Determination of volatile
content
EN ISO 1133-1, Plastics — Determination of the melt mass-flow rate (MFR) and melt volume-flow rate (MVR) of
thermoplastics — Part 1: Standard method (ISO 1133-1)
EN ISO 1167-1, Thermoplastics pipes, fittings and assemblies for the conveyance of fluids — Determination of the
resistance to internal pressure — Part 1: General method (ISO 1167-1)
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)
EN ISO 1183-1, Plastics — Methods for determining the density of non-cellular plastics — P
...
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