EN 17414-1:2020

SLOVENSKI STANDARD
01-oktober-2020
Cevi za daljinsko hlajenje - Tovarniško izdelani gibki cevni sistemi - 1. del:
Razvrstitev, splošne zahteve in preskusne metode
District cooling pipes - Factory made flexible pipe systems - Part 1: Classification,
general requirements and test methods
Fernkühlungsrohre - Werkmäßig gedämmte flexible Rohrsysteme - Teil 1: Klassifikation,
allgemeine Anforderungen und Prüfung
Réseaux d’eau glacée - Systèmes de tuyaux flexibles manufacturés - Partie 1 :
Classification, exigences générales et méthodes d’essai
Ta slovenski standard je istoveten z: EN 17414-1:2020
ICS:
23.040.99 Drugi sestavni deli za Other pipeline components
cevovode
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 17414-1
EUROPEAN STANDARD
NORME EUROPÉENNE
July 2020
EUROPÄISCHE NORM
ICS 23.040.99
English Version
District cooling pipes - Factory made flexible pipe systems
- Part 1: Classification, general requirements and test
methods
Réseaux d'eau glacée - Systèmes de tuyaux flexibles Fernkälterohre - Werkmäßig gefertigte flexible
manufacturés - Partie 1 : Classification, prescriptions Rohrsysteme - Teil 1: Klassifikation, allgemeine
générales et méthodes d'essai Anforderungen und Prüfung
This European Standard was approved by CEN on 22 June 2020.

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, Turkey 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
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 17414-1:2020 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 Symbols, indices and abbreviations . 7
5 Classification. 11
6 Requirements . 11
6.1 Thermal insulation properties . 11
6.2 Bending properties . 12
6.3 Resistance to external load . 12
6.4 Thermal insulation . 13
6.5 Casing . 13
6.6 Surveillance systems . 14
7 Test methods . 14
7.1 General. 14
7.2 Bending test . 14
7.3 Compressive creep . 18
8 Marking . 21
8.1 General marking aspects . 21
8.2 Minimum marking information . 21
9 Manufacturer's information . 22
Annex A (normative) Thermal conductivity of factory made pipe assemblies – Test
procedure . 23
Annex B (normative) Calculation of the heat flow from the medium to the ambient of
factory made buried district cooling pipes. 29
Annex C (informative) Determination of design values for the radial thermal resistance . 31
Annex D (informative) Guidelines for testing . 32
Bibliography . 34

European foreword
This document (EN 17414-1:2020) has been prepared by Technical Committee CEN/TC 107
“Prefabricated district heating and district cooling pipe system”, 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 January 2021, and conflicting national standards shall
be withdrawn at the latest by January 2021.
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.
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, Turkey and the
United Kingdom.
Introduction
Factory made flexible pipe systems for directly buried district cooling networks are of common
technical usage. In order to ensure quality including product-related service life, to ensure safety in use,
economical energy usage and to facilitate comparability in the market, CEN/TC 107 decided to set up
standards for these products.
This document is one of a series of standards which form several parts of EN 17414, District cooling
pipes – Factory made flexible pipe systems:
— Part 1: Classification, general requirements and test methods (this document);
— Part 2: Bonded system with plastic service pipes - Requirements and test methods;
— Part 3: Non bonded system with plastic service pipes - Requirements and test methods.
The other standards from CEN/TC 107 covering this subject are:
— EN 17415-1, District cooling pipes - Bonded single pipe systems for directly buried cold water
networks - Part 1: Factory made pipe assembly of steel or plastic service pipe, polyurethane thermal
insulation and a casing of polyethylene;
— EN 17415-2, District cooling pipes – Bonded single pipe systems for directly buried cold water
networks Part 2: Factory made fitting assemblies of steel or plastic service pipe, polyurethane thermal
insulation and a casing of polyethylene ;
— EN 17415-3, District cooling pipes – Bonded single pipe systems for directly buried cold water
networks Part 3: Factory made steel valve assembly for steel or plastic service pipe, polyurethane
thermal insulation and a casing of polyethylene ;
— EN ZZZZZ-1, District cooling pipes – Design and installation of thermal insulated bonded single and
twin pipe systems for directly buried cold water networks – Part 1: Design ;
— EN ZZZZZ-2, District cooling pipes – Design and installation of thermal insulated bonded single and
twin pipe systems for directly buried cold water networks – Part 2: Installation ;
— EN 489-1, District heating pipes - Bonded single and twin pipe systems for buried hot water networks
- Part 1: Joint casing assemblies and thermal insulation for hot water networks in accordance with
EN 13941-1;
— EN 14419, District heating pipes - Bonded single and twin pipe systems for buried hot water networks
- Surveillance systems;
Under preparation.
1 Scope
This document specifies requirements and test methods for factory made thermally insulated flexible
pipe-in-pipe assemblies for directly buried district cooling distribution systems, comprising a service
pipe and a casing of polyethylene. The pipe assembly can also include the following additional elements:
measuring wires, spacers and diffusion barriers.
This document is intended to be used in conjunction with EN 17414-2 or EN 17414-3.
This document applies only to insulated pipe assemblies, for continuous operation with water at
various temperatures (1 to 30) °C and a maximum operation pressure of 25 bar dependent on material
specified.
The design is based on an expected service life with continuous operation of a minimum 50 years. For
pipe systems with plastic service pipes, the respective temperature profiles are defined in EN 17414-2
and EN 17414-3.
NOTE For the transport of other liquids, for example potable water, additional requirements could be
applicable.
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 1605, Thermal insulating products for building applications - Determination of deformation under
specified compressive load and temperature conditions
EN 1606, Thermal insulating products for building applications - Determination of compressive creep
EN 12085, Thermal insulating products for building applications - Determination of linear dimensions of
test specimens
EN 13941-1, District heating pipes - Design and installation of thermal insulated bonded single and twin
pipe systems for directly buried hot water networks - Part 1: Design
EN 14419, District heating pipes - Bonded single and twin pipe systems for buried hot water networks -
Surveillance systems
EN 17248, District heating and district cooling pipe systems - Terms and definitions
EN 60811-406:2012, Electric and optical fibre cables - Test methods for non-metallic materials - Part 406:
Miscellaneous tests - Resistance to stress cracking of polyethylene and polypropylene compounds
EN 17415-1:2020, District cooling pipes - Bonded single pipe systems for directly buried cold water
networks - Part 1: Factory made pipe assembly of steel or plastic service pipe, polyurethane thermal
insulation and a casing of polyethylene
EN ISO 845, Cellular plastics and rubbers - Determination of apparent density (ISO 845)
EN ISO 3127, Thermoplastics pipes - Determination of resistance to external blows - Round-the-clock
method (ISO 3127)
EN ISO 9967, Thermoplastics pipes - Determination of creep ratio (ISO 9967)
EN ISO 9969, Thermoplastics pipes - Determination of ring stiffness (ISO 9969)
EN ISO 11357-6, Plastics - Differential scanning calorimetry (DSC) - Part 6: Determination of oxidation
induction time (isothermal OIT) and oxidation induction temperature (dynamic OIT) (ISO 11357-6)
EN ISO 16871, Plastics piping and ducting systems - Plastics pipes and fittings - Method for exposure to
direct (natural) weathering (ISO 16871)
ISO 6964, Polyolefin pipes and fittings — Determination of carbon black content by calcination and
pyrolysis — Test method
ISO 16770, Plastics — Determination of environmental stress c
...