EN 17878-1:2024
(Main)District heating pipes - Factory made flexible pipe systems with a lower temperature profile - Part 1: Classification, general requirements and test methods
District heating pipes - Factory made flexible pipe systems with a lower temperature profile - Part 1: Classification, general requirements and test methods
This document specifies classification, general requirements and test methods for flexible, factory made, buried district heating pipe systems.
This document is intended to be used only in conjunction with EN 17878-2 or EN 17878-3, as applicable.
This document is applicable to a maximum operating temperature of 80 °C and a maximum operating design pressure up to 1,0 MPa.
The pipe systems are designed for a service life of at least 50 years. For pipe systems with plastic service pipes, the respective temperature profiles are specified in EN 17878-2:2024 and EN 17878-3:2024.
For the transport of other liquids, for example potable water, additional requirements can be applicable.
Fernwärmerohre - Flexible Rohrsysteme mit einem niedrigeren Temperaturprofil - Teil 1: Klassifikation, allgemeine Anforderungen und Prüfungen
Dieses Dokument legt die Klassifikation, allgemeine Anforderungen und Prüfverfahren für flexible, werkmäßig hergestellte, erdverlegte Fernwärmenetze fest.
Dieses Dokument ist ausschließlich für die Anwendung in Verbindung mit EN 17878-2 oder EN 17878-3, wie jeweils zutreffend, vorgesehen.
Dieses Dokument ist für eine maximale Betriebstemperatur von 80 °C und einen maximalen zulässigen Betriebsdruck bis einschließlich 1,0 MPa anwendbar.
Die Rohrsysteme sind für eine Nutzungsdauer von 50 Jahren ausgelegt. Für Rohrsysteme mit Mediumrohren aus Kunststoff sind die entsprechenden Temperaturprofile in EN 17878-2:2023 und EN 17878-3:2023 festgelegt.
Für den Transport von anderen Flüssigkeiten, wie z. B. Trinkwasser, können zusätzliche Anforderungen gelten.
Tuyaux de chauffage urbain - Système de tuyaux flexibles préisolés - Partie 1 : Classification, exigences générales et méthodes d'essai
Le présent document spécifie la classification, les prescriptions générales et les méthodes d’essai pour les systèmes de réseaux de tuyaux de chauffage urbain flexibles, manufacturés, enterrés directement.
Le présent document est destiné à être uniquement utilisé conjointement avec les EN 17878-2 ou EN 17878-3, si applicable.
Le présent document est applicable à une température maximale de service de 80 °C et une pression de service maximale inférieure à 1,0 MPa.
Les systèmes de tuyaux sont conçus pour une durée de vie prévue d’au moins 50 ans. Pour les systèmes de tuyaux avec des tubes de service en plastique. Les profils de température respectifs sont spécifiés dans les EN 17878-2:2024 et EN 17878-3:2024.
Pour le transport d’autres liquides, par exemple de l’eau potable, des exigences supplémentaires peuvent s’appliquer.
Cevi za daljinsko ogrevanje - Tovarniško izdelani gibki cevni sistemi z nižjim temperaturnim profilom - 1. del: Klasifikacija, splošne zahteve in preskusne metode
Ta dokument določa klasifikacijo, splošne zahteve in preskusne metode za tovarniško izdelane gibke podzemne cevne sisteme za daljinsko ogrevanje.
Ta dokument je namenjen za uporabo skupaj z 2. ali 3. delom (kot je ustrezno).
Ta dokument se uporablja za najvišjo stalno temperaturo medijev 80 °C (2. in 3 del) in za konstrukcijske tlake od 0,6 MPa do 1 MPa.
Predvidena življenjska doba cevnih sistemov je najmanj 50 let. Temperaturni razponi za cevne sisteme z delovnimi cevmi iz polimernih materialov so določeni v standardih EN XXXX-2 in EN XXXX-3.
OPOMBA: Za transport drugih tekočin, na primer pitne vode, morda veljajo dodatne zahteve.
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-maj-2024
Cevi za daljinsko ogrevanje - Tovarniško izdelani gibki cevni sistemi z nižjim
temperaturnim profilom - 1. del: Klasifikacija, splošne zahteve in preskusne
metode
District heating pipes - Factory made flexible pipe systems with a lower temperature
profile - Part 1: Classification, general requirements and test methods
Fernwärmerohre - Flexible Rohrsysteme mit einem niedrigeren Temperaturprofil - Teil 1:
Klassifikation, allgemeine Anforderungen und Prüfungen
Tuyaux de chauffage urbain - Systéme de tuyaux flexibles préisolés - Partie 1:
Classification, exigences générales et méthodes d'essai
Ta slovenski standard je istoveten z: EN 17878-1:2024
ICS:
23.040.07 Cevovodi za daljinsko Pipeline and its parts for
ogrevanje in njihovi deli district heat
23.040.20 Cevi iz polimernih materialov Plastics pipes
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 17878-1
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2024
EUROPÄISCHE NORM
ICS 23.040.07
English Version
District heating pipes - Factory made flexible pipe systems
with a lower temperature profile - Part 1: Classification,
general requirements and test methods
Tuyaux de chauffage urbain - Système de tuyaux Fernwärmerohre - Flexible Rohrsysteme mit einem
flexibles préisolés - Partie 1 : Classification, exigences niedrigeren Temperaturprofil - Teil 1: Klassifikation,
générales et méthodes d'essai allgemeine Anforderungen und Prüfungen
This European Standard was approved by CEN on 14 August 2023.
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
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 17878-1:2024 E
worldwide for CEN national Members.
Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms, definitions and symbols . 7
3.1 Terms and definitions . 7
3.2 Symbols, indices and abbreviations . 7
4 Classification . 10
5 Design requirements . 10
5.1 Thermal insulation properties . 10
5.2 Bending test . 10
5.2.1 Flexibility . 10
5.2.2 Ovality . 11
5.2.3 Cracks . 11
5.3 Resistance to external load. 11
5.3.1 Ring stiffness . 11
5.3.2 Impact resistance . 11
5.4 Thermal insulation . 11
5.4.1 Compressive creep. 11
5.4.2 Water absorption at elevated temperatures . 11
5.4.3 Density of thermal insulation . 12
5.5 Casing . 12
5.5.1 UV stability . 12
5.5.2 Thermal stability of the material . 12
5.5.3 Stress crack resistance of the material . 12
5.5.4 Use of rework material . 12
5.6 Surveillance systems . 12
6 Test methods . 12
6.1 General . 12
6.2 Bending test . 13
6.2.1 Flexibility . 13
6.2.2 Ovality test . 14
6.2.3 Cracks in the thermal insulation . 14
6.3 Compressive creep. 15
6.3.1 General . 15
6.3.2 Principles of testing . 15
6.3.3 Test apparatus. 15
6.3.4 Test specimens . 16
6.3.5 Test procedure . 17
6.3.6 Test force and expression of results . 17
7 Marking . 18
7.1 General marking aspects . 18
7.2 Minimum marking information . 19
8 Manufacturer's information . 19
Annex A (normative) Thermal conductivity of factory made pipes – Test procedure . 20
A.1 General . 20
A.2 Requirements . 20
A.3 Apparatus . 20
A.4 Test specimen . 21
A.5 Procedure . 21
A.6 Calculations – Thermal conductivity . 24
Annex B (informative) Determination of design values for the radial thermal resistance . 26
Annex C (informative) Guidelines for inspection and testing . 27
Bibliography . 29
European foreword
This document (EN 17878-1:2024) has been prepared by Technical Committee CEN/TC 107 “District
heating and cooling systems”, the secretariat of which is held by DS.
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 September 2024, and conflicting national standards shall
be withdrawn at the latest by September 2024.
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 is read in conjunction with EN 17878-2:2024 and EN 17878-3:2024.
This document is part of the EN 17878 series of standards District heating pipes — Factory made flexible
pipe systems with a lower temperature profile:
— Part 1: Classification, general requirements and test methods;
— Part 2: Requirements and test methods for bonded systems with plastic service pipes;
— Part 3: Requirements and test methods for non bonded systems with plastic service pipes.
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
District heating technology has developed rapidly since its origin and especially in recent times. Today,
there are different generations of district heating networks. The technologies of these generations are
driven by the different heat sources and operating temperatures used.
CEN/TC 107 provides a set of European standard series for rigid and flexible piping systems in district
heating to suit all generations and requirements of district heating networks in the market.
The standard documents ensure quality for pre-fabricated piping systems in district heating.
This standard series covers flexible, pre-fabricated piping systems for operation conditions as described
in the scope of this document.
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