SIST-TS CEN/TS 17889:2025

SLOVENSKI STANDARD
01-januar-2025
Cevi za daljinsko ogrevanje - Tovarniško izdelani gibki cevni sistemi -
Razvrščanje, zahteve in preskusne metode za vezane ali nevezane cevne sisteme
iz ojačenih termopolimernih materialov (TRSP)
District heating pipes - Factory made flexible pipe systems - Classification, requirements
and test methods for bonded or non-bonded system with thermoplastic reinforced
service pipes (TRSP)
Fernwärmerohre - Werkmäßig gedämmte flexible Rohrsysteme - Klassifikation,
Anforderungen und Prüfungen für Verbund- und Nicht-Verbund-Rohrsysteme mit
thermoplastischen, verstärkten Mediumrohren (TRSP)
Canalisation pour le chauffage urbain - Systèmes de conduites flexibles manufacturés -
Classification, exigences et méthodes d'essai pour des systèmes bloqués ou non
bloqués de tuyaux de service renforcés en thermoplastique (TRSP)
Ta slovenski standard je istoveten z: CEN/TS 17889:2024
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.

CEN/TS 17889
TECHNICAL SPECIFICATION
SPÉCIFICATION TECHNIQUE
November 2024
TECHNISCHE SPEZIFIKATION
ICS 23.040.07
English Version
District heating pipes - Factory made flexible pipe systems
- Classification, requirements and test methods for bonded
or non-bonded system with thermoplastic reinforced
service pipes (TRSP)
Canalisation pour le chauffage urbain - Systèmes de Fernwärmerohre - Werkmäßig gedämmte flexible
conduites flexibles manufacturés - Classification, Rohrsysteme - Klassifikation, Anforderungen und
exigences et méthodes d'essai pour des systèmes Prüfungen für Verbund- und Nicht-Verbund-
bloqués ou non bloqués de tuyaux de service renforcés Rohrsysteme mit thermoplastischen, verstärkten
en thermoplastique (TRSP) Mediumrohren (TRSP)
This Technical Specification (CEN/TS) was approved by CEN on 6 October 2024 for provisional application.

The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to
submit their comments, particularly on the question whether the CEN/TS can be converted into a European Standard.

CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS
available promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in
parallel to the CEN/TS) until the final decision about the possible conversion of the CEN/TS into an EN is reached.

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. CEN/TS 17889:2024 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms, definitions and abbreviations . 6
3.1 Terms and definition . 6
3.2 Abbreviations . 6
4 Classification. 7
4.1 Operating temperatures and service life . 7
4.2 Design pressures . 7
5 Requirements and test methods . 8
5.1 General requirements . 8
5.2 Material requirements . 8
5.3 Requirement for TRSP . 9
5.4 Service pipes, fittings and their connections . 12
6 Thermal insulation . 13
7 Casing . 13
8 Pipe assembly . 13
9 Marking for the pipe assembly . 13
9.1 General marking aspects . 13
9.2 Minimum marking information . 13
Annex A (informative) Supplementary information to temperature profiles of Table 1 . 14
Annex B (informative) Recalculation procedure of pressure strength of the construction
type of the TRSP . 15
Annex C (informative) Guideline for inspection and testing of the TRSP . 16
Annex D (informative) Guideline for testing pipe assembly . 18
Annex E (informative) Application of Miner’s Rule – Calculation of the calculated design life
of TRSP systems . 20
Annex F (normative) Determination of the thermal durability of material from the
elongation at break . 22
Bibliography . 26

European foreword
This document (CEN/TS 17889:2024) has been prepared by Technical Committee CEN/TC 107
Prefabricated district heating and district cooling pipe systems”, the secretariat of which is held by DS.
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.
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 organizations of the
following countries are bound to announce this Technical Specification: 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.
This document ensures quality for factory made piping systems in district heating.
This document covers flexible, factory made piping systems, with thermoplastic reinforced service pipes,
for operation conditions as described in the scope of this document.
1 Scope
This document specifies classification, general requirements and test methods for flexible, factory made,
buried district heating pipe systems with thermoplastic reinforced service pipes (TRSP).
The factory made bonded or non-bonded flexible pipe systems covered by this document consist of:
— a thermoplastic reinforced service pipe, which consists of an inner layer made of PE-Xa, a
thermoplastic intermediate layer, a reinforcement layer made of para-aramid fibres, an outer
thermoplastic layer and a diffusion barrier layer, all with bonded structure;
— a thermal insulation layer;
— a casing made of PE.
Depending on the temperature profile, this document is applicable to a maximum operating temperature
of 115 °C and maximum operating design pressure up to 1,6 MPa.
The pipe systems are designed for a service life of at least 30 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 is needed. Such requirements are not specified in this document.
A guideline for testing the pipe assembly is given in Annex D.
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 15632-1, District heating pipes — Factory made flexible pipe systems — Part 1: Classification, general
requirements and test methods
EN 15632-2, District heating pipes — Factory made flexible pipe systems — Part 2: Bonded system with
plastic service pipes; requirements and test methods
EN 15632-3, District heating pipes — Factory made flexible pipe systems — Part 3: Non bonded system with
plastic service pipes; requirements and test methods
EN 17248, District heating and district cooling pipe systems — Terms and definitions
EN ISO 3126, Plastics piping systems — Plastics components — Determination of dimensions (ISO 3126)
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 9080, Plastics piping and ducting systems — Determination of the long-term hydrostatic strength of
thermoplastics materials in pipe form by extrapolation (ISO 9080)
EN ISO 15875-2, Plastics piping systems for hot and cold water installations — Crosslinked polyethylene
(PE-X) — Part 2: Pipes (ISO 15875-2)
EN ISO 19893:2018, Plastics piping systems — Thermoplastics pipes and fittings for hot and cold water —
Test method for the resistance of mounted assemblies to temperature cycling (ISO 19893:2011)
ISO 527-1:2019, Plastics — Determination of tensile properties — Part 1: General principles
ISO 527-2:2012, Plastics — Determination of tensile properties — Part 2: Test conditions for moulding and
extrusion plastics
ISO 2578, Plastics — Determination of time-temperature limits after prolonged exposure to heat
ISO 6259-1:2015, Thermoplastics pipes — Determination of tensile properties — Part 1: General test
method
ISO 10146, Crosslinked polyethylene (PE-X) and crosslinked medium density polyethylene (PE-MDX) —
Effect of time and temperature on expected strength
ASTM D7269, Standard Tests Methods for Tensile Testing of Aramid Yarns
3 Terms, definitions and abbreviations
3.1 Terms and definition
For the purposes of this document, the terms and definitions given in EN 17248 apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp/
— IEC Electropedia: available at https://www.electropedia.org/
3.2 Abbreviations
DN Nominal diameter of the service pipe
AI Additional inspection
LTHP Long term hydrostatic pressure
LPL 97,5 % lower prediction limit
MQC Manufacturers Quality control
PE Polyethylene
PE-Xa Peroxide cross linked polyethylene
PUR Polyurethane
PVT Process Verification Test
TRSP Thermoplastic Reinforced Service pipes
TT Manufacturers Type Test
p De
...