District heating pipes - Factory made flexible pipe systems with a lower temperature profile - Part 2: Requirements and test methods for bonded systems with plastic service pipes

This document specifies requirements and test methods for flexible, factory made, buried district heating pipe systems with plastic service pipes and bonding between the layers of the pipe assemblies.
It is only applicable in conjunction with EN 17878-1.
This document is applicable to pipes, fittings, their joints and to joints with components made of non-plastics materials intended to be used for district heating installations.
This document is applicable to a maximum operating temperature of 80 °C and maximum operating design pressure up to 1,0 MPa for a design service life of at least 50 years.
This document does not apply to cover surveillance systems.
NOTE   For higher temperatures or for the transport of other fluids, for example potable water, additional requirements and testing are needed. Such requirements are not specified in this document.

Fernwärmerohre - Flexible Rohrsysteme mit einem niedrigeren Temperaturprofil - Teil 2: Verbundrohrsysteme mit Mediumrohren aus Kunststoff - Anforderungen und Prüfungen

Dieses Dokument legt Anforderungen und Prüfverfahren für flexible, werkmäßig hergestellte, erdverlegte Fernwärmerohrsysteme mit Mediumrohren aus Kunststoff und Verbund zwischen den Schichten der Rohrbaugruppen fest.
Es ist nur in Verbindung mit prEN 17878-1 anwendbar.
Dieses Dokument gilt für Rohre, Formstücke, ihre Verbindungen untereinander sowie mit Rohrleitungsteilen, deren Werkstoffe nicht aus Kunststoff bestehen und die für Fernwärmeinstallationen vorgesehen sind.
Dieses Dokument ist für eine maximale Betriebstemperatur von 80 °C und einen maximalen zulässigen Betriebsdruck bis einschließlich 1,0 MPa für eine Auslegungsnutzungsdauer von mindestens 50 Jahren anwendbar.
Dieses Dokument ist nicht anwendbar für Überwachungssysteme.
Für höhere Temperaturen oder für den Transport anderer Flüssigkeiten, z. B. Trinkwasser, sind zusätzliche Anforderungen und Prüfungen erforderlich. Derartige Anforderungen sind in diesem Dokument nicht festgelegt.

Tuyaux de chauffage urbain - Système de tuyaux flexibles préisolés - Partie 2 : Exigences et méthodes d'essai pour les systèmes bloqués avec tubes de service en plastique

Le présent document spécifie les exigences et les méthodes d’essai relatives aux systèmes de tuyaux de chauffage urbain flexibles, manufacturés, enterrés, avec des tubes de service en plastique et bloqués entre les couches des assemblages de tubes.
Il n'est applicable que conjointement avec l'EN 17878-1.
Le présent document est applicable aux tuyaux, aux raccords, leurs joints, et aux joints avec des composants en matériaux non plastiques destinés à être utilisés pour les installations de chauffage urbain.
Le présent document est applicable à des températures maximales de service de 80 °C et des pressions de service maximales inférieures à 1,0 MPa, pour une durée de vie prévue d’au moins 50 ans.
Le présent document ne couvre pas les systèmes de surveillance.
NOTE   Pour les températures plus élevées ou pour le transport d’autres fluides, par exemple, de l’eau potable, des exigences et des essais supplémentaires sont nécessaires. Ces exigences ne sont pas spécifiées dans le présent document.

Cevi za daljinsko ogrevanje - Tovarniško izdelani gibki cevni sistemi z nižjim temperaturnim profilom - 2. del: Vezani cevni sistemi iz polimernih materialov - Zahteve in preskusne metode

Ta dokument določa zahteve in preskusne metode za tovarniško izdelane gibke podzemne cevne sisteme za daljinsko ogrevanje z delovnimi cevmi iz polimernih materialov, pri katerih sloji niso vezani.
Uporablja se samo v povezavi s 1. delom.
Ta dokument se uporablja za najvišjo stalno temperaturo medija 80 °C in najvišji konstrukcijski obratovalni tlak do 1,0 MPa za predvideno življenjsko dobo vsaj 50 let.
Ne uporablja se za nadzorne sisteme.
Ta dokument se v povezavi z drugimi deli standarda EN XXXXX uporablja za cevi, fitinge, njihove spoje ter spoje s komponentami iz nepolimernih materialov, namenjene uporabi v napeljavah za daljinsko ogrevanje.

General Information

Status
Published
Publication Date
05-Mar-2024
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Start Date
06-Mar-2024
Due Date
05-Sep-2023
Completion Date
06-Mar-2024

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SLOVENSKI STANDARD
01-maj-2024
Cevi za daljinsko ogrevanje - Tovarniško izdelani gibki cevni sistemi z nižjim
temperaturnim profilom - 2. del: Vezani cevni sistemi iz polimernih materialov -
Zahteve in preskusne metode
District heating pipes - Factory made flexible pipe systems with a lower temperature
profile - Part 2: Bonded system with plastic service pipes; requirements and test methods
Fernwärmerohre - Flexible Rohrsysteme mit einem niedrigeren Temperaturprofil - Teil 2:
Verbundrohrsysteme mit Mediumrohren aus Kunststoff; Anforderungen und Prüfungen
Tuyaux de chauffage urbain - Système de tuyaux flexibles préisolés - Partie 2 : Système
bloqué avec tubes de service en plastique, exigences et méthodes d'essai
Ta slovenski standard je istoveten z: EN 17878-2:2024
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 17878-2
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 2: Requirements
and test methods for bonded systems with plastic service
pipes
Tuyaux de chauffage urbain - Système de tuyaux Fernwärmerohre - Flexible Rohrsysteme mit einem
flexibles préisolés - Partie 2 : Exigences et méthodes niedrigeren Temperaturprofil - Teil 2:
d'essai pour les systèmes bloqués avec tubes de service Verbundrohrsysteme mit Mediumrohren aus
en plastique Kunststoff - Anforderungen und Prüfungen
This European Standard was approved by CEN on 28 December 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 17878-2:2024 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 Classification . 6
4.1 Operating temperatures and service life. 6
4.2 Design pressures . 7
5 Requirements . 7
5.1 General requirements . 7
5.2 Service pipes, fittings and their connections . 8
5.2.1 Quality of service pipes, fittings and their connections . 8
5.2.2 Fittings with steel welding end . 9
5.2.3 Oxygen tightness of service pipes . 10
5.3 Axial shear strength of pipe assemblies . 10
5.4 Linear water tightness of pipe assemblies . 10
5.5 Water vapour permeation of pipe assemblies . 10
6 Test procedures . 10
6.1 General . 10
6.2 Thermal cycling test . 10
6.3 Axial shear strength of pipe assemblies . 11
6.4 Linear water tightness of pipe assemblies . 12
Annex A (informative) Application of Miner's Rule – Calculation of the calculated design life
of PE-RT Type II, PB-H, PE-X and multilayer piping systems . 13
A.1 General . 13
A.2 Considerations for multilayer piping systems . 15
Annex B (informative) Guidelines for inspection and testing . 16
Bibliography . 18
European foreword
This document (EN 17878-2:2024) 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 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 factory made piping systems in district heating.
This standard series covers flexible, factory made piping systems for operation conditions as described
in the scope of part 1.
1 Scope
This document specifies requirements and test methods for flexible, factory made, buried district heating
pipe systems with plastic service pipes and bonding between the layers of the pipe assemblies.
It is only applicable in conjunction with EN 17878-1.
This document is applicable to pipes, fittings, their joints and to joints with components made of non-
plastics materials intended to be used for district heating installations.
This document is applicable to a maximum operating temperature of 80 °C and maximum operating
design pressure up to 1,0 MPa for a design service life of at least 50 years.
This document does not apply to cover surveillance systems.
NOTE For higher temperatures or for the transport of other fluids, for example potable water, additional
requirements and testing are needed. Such requirements are not specified in this document.
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 485-2, Aluminium and aluminium alloys — Sheet, strip and plate — Part 2: Mechanical properties
EN 573-3, Aluminium and aluminium alloys — Chemical composition and form of wrought products —
Part 3: Chemical composition and form of products
EN 10025-2, Hot rolled products of structural steels — Part 2: Technical delivery conditions for non-alloy
structural steels
EN 10025-3, Hot rolled products of structural steels — Part 3: Technical delivery conditions for
normalized/normalized rolled weldable fine grain structural steels
EN 10025-4, Hot rolled products of structural steels — Part 4: Technical delivery conditions for
thermomechanical rolled weldable fine grain structural steels
EN 10216-1, Seamless steel tubes for pressure purposes — Technical delivery conditions — Part 1: Non-
alloy steel tubes with specified room temperature properties
EN 10216-2, Seamless steel tubes for pressure purposes — Technical delivery conditions — Part 2: Non-
alloy and alloy steel tubes with specified elevated temperature properties
EN 10216-3, Seamless steel tubes for pressure purposes — Technical delivery conditions — Part 3: Alloy fine
grain steel tubes
EN 10217-1, Welded steel tubes for pressure purposes — Technical delivery conditions — Part 1: Electric
welded and submerged arc welded non-alloy steel tubes with specified room temperature properties
EN 10217-2, Welded steel tubes for pressure purposes — Technical delivery conditions — Part 2: Electric
welded non-alloy and alloy steel tubes with specified elevated temperature properties
EN 10217-3, Welded steel tubes for pressure purposes — Technical delivery conditions — Part 3: Electric
welded and submerged arc welded alloy fine grain steel tubes with specified room, elevated and low
temperature properties
EN 17248, District heating and district cooling pipe systems — Terms and definitions
EN 17878-1, District heating pipes — Factory made flexible pipe systems with a lower temperature profile
— Part 1: Classification, general requirements and test methods
EN ISO 15875 (all parts), Plastics piping systems for hot and cold water installations — Crosslinked
polyethylene (PE-X) (ISO 15875)
EN ISO 15876 (all parts), Plastics piping systems for hot and cold water installations — Polybutene (PB)
(ISO 15876)
EN ISO 21003 (all parts), Multilayer piping systems for hot and cold water installations inside buildings
(ISO 21003)
EN ISO 22391 (all parts), Plastics piping systems for hot and cold water installations — Polyethylene of
raised temperature resistance (PE-RT) (ISO 22391)
ISO 17455, Plastics piping systems — Multilayer pipes — Determination of the oxygen permeability of the
barrier pipe
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 17248 and EN 17878-1 apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— IEC Electropedia: available at https://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
4 Classification
4.1 Operating temperatures and service life
Pipe systems accordi
...

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