SIST EN 253:2020/kprA1:2023
(Amendment)District heating pipes - Bonded single pipe systems for directly buried hot water networks - Factory made pipe assembly of steel service pipe, polyurethane thermal insulation and a casing of polyethylene
District heating pipes - Bonded single pipe systems for directly buried hot water networks - Factory made pipe assembly of steel service pipe, polyurethane thermal insulation and a casing of polyethylene
This document specifies requirements and test methods for straight lengths of factory made thermally insulated bonded single pipe assemblies for hot water networks in accordance with EN 13941-1, comprising a steel service pipe, polyurethane foam thermal insulation and a casing of polyethylene.
The pipe assembly can also include the following additional elements: measuring wires, spacers and diffusion barriers.
Fernwärmerohre - Einzelrohr-Verbundsysteme für direkt erdverlegte Fernwärmenetze - Werkmäßig gefertigte Verbundrohrsysteme, bestehend aus Stahl-Mediumrohr, einer Wärmedämmung aus Polyurethan und einer Ummantelung aus Polyethylen
Tuyaux de chauffage urbain - Systèmes bloqués de tuyaux pour les réseaux d'eau chaude enterrées directement - Assemblages de tubes de service en acier manufacturés, isolation thermique en polyuréthane et tube de protection en polyéthylène
Cevi za daljinsko ogrevanje - Poviti enocevni sistemi za neposredno vkopana vročevodna omrežja - Tovarniško izdelan cevni sestav iz jeklene delovne cevi, obdane s poliuretansko toplotno izolacijo in zaščitnim plaščem iz polietilena - Dopolnilo A1
General Information
Relations
Overview
EN 253:2019/FprA1 (CEN) specifies requirements and test methods for factory-made, bonded single pipe systems used in directly buried district heating pipes for hot water networks. The pipe assembly comprises a steel service pipe, polyurethane (PU) thermal insulation, and an outer polyethylene casing. The amendment (prA1/A1) updates normative references, test methods and manufacturing/inspection requirements to reflect current practice for prefabricated district heating systems.
Key topics and technical requirements
- Scope & composition
- Factory-made bonded single pipe assemblies for directly buried hot water networks (steel service pipe + PU insulation + PE casing).
- Assemblies may include measuring wires, spacers and diffusion barriers.
- Materials & surface preparation
- Steel service pipe outer surface to meet rust grade A, B or C (EN ISO 8501-1) and be free from pitting; cleaning recommended before insulation for proper bonding.
- Carbon black content in casing: 2.0–2.5% by mass (ISO 6964); dispersion rating not worse than A3 (ISO 18553).
- Pipe ends & welding
- Service pipes to be delivered with bevelled ends (specified bevel angle/root face) for welding when wall thickness ≥ 3.2 mm; preparation requirements updated.
- Insulation properties & testing
- PU foam density to be determined in accordance with EN ISO 845.
- Foam test volume after ageing: 75%–150% of original.
- Thermal conductivity of the insulation calculated by linear regression from multiple pipe temperature measurements (Annex C updates).
- Casing & dimensional checks
- Casing surfaces (separately manufactured or extruded) to be free of grooves/defects that impair function.
- Precise dimensional measurement methods updated (EN ISO 1923 referenced).
- Quality control & inspection
- Manufacturer quality system can be certified to EN ISO 9001; inspection frequencies may be adjusted based on statistics of consistency.
- Annex B and testing tables updated to refine type tests and production inspection.
Applications and who uses this standard
- Designed for: district heating designers, network operators, pipe manufacturers, civil contractors, specifiers, purchasers and testing laboratories.
- Typical uses: new and replacement directly buried hot water distribution networks, prefabricated pipeline supply, specification for tender documents and factory production control.
- Practical benefits: ensures thermal performance, mechanical integrity, weldability and long-term serviceability of bonded single pipe systems.
Related standards
- EN 13941-1 (referenced in scope)
- EN ISO 845, EN ISO 1923, EN ISO 8501-1
- EN 10220, EN 10216-2, EN 10217-2 / EN 10217-5
- EN ISO 9001 and EN 15698 (contextual references)
Keywords: EN 253:2019/FprA1, district heating pipes, bonded single pipe systems, polyurethane thermal insulation, steel service pipe, polyethylene casing, factory made pipe assembly, directly buried hot water networks, testing, quality control.
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 253:2020/oprA1:2022
01-september-2022
Cevi za daljinsko ogrevanje - Poviti enocevni sistemi za neposredno vkopana
vročevodna omrežja - Tovarniško izdelan cevni sestav iz jeklene delovne cevi,
obdane s poliuretansko toplotno izolacijo in zaščitnim plaščem iz polietilena -
Dopolnilo A1
District heating pipes - Bonded single pipe systems for directly buried hot water networks
- Factory made pipe assembly of steel service pipe, polyurethane thermal insulation and
a casing of polyethylene
Fernwärmerohre - Einzelrohr-Verbundsysteme für direkt erdverlegte Fernwärmenetze -
Werkmäßig gefertigte Verbundrohrsysteme, bestehend aus Stahl-Mediumrohr, einer
Wärmedämmung aus Polyurethan und einer Ummantelung aus Polyethylen
Tuyaux de chauffage urbain - Systèmes bloqués de tuyaux pour les réseaux d'eau
chaude enterrées directement - Assemblages de tubes de service en acier
manufacturés, isolation thermique en polyuréthane et tube de protection en polyéthylène
Ta slovenski standard je istoveten z: EN 253:2019/prA1
ICS:
23.040.07 Cevovodi za daljinsko Pipeline and its parts for
ogrevanje in njihovi deli district heat
23.040.10 Železne in jeklene cevi Iron and steel pipes
91.140.65 Oprema za ogrevanje vode Water heating equipment
SIST EN 253:2020/oprA1:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
SIST EN 253:2020/oprA1:2022
SIST EN 253:2020/oprA1:2022
DRAFT
EUROPEAN STANDARD
EN 253:2019
NORME EUROPÉENNE
EUROPÄISCHE NORM
prA1
June 2022
ICS 23.040.07; 23.040.10
English Version
District heating pipes - Bonded single pipe systems for
directly buried hot water networks - Factory made pipe
assembly of steel service pipe, polyurethane thermal
insulation and a casing of polyethylene
Tuyaux de chauffage urbain - Systèmes bloqués de Fernwärmerohre - Einzelrohr-Verbundsysteme für
tuyaux pour les réseaux d'eau chaude enterrées direkt erdverlegte Fernwärmenetze - Werkmäßig
directement - Assemblages de tubes de service en acier gefertigte Verbundrohrsysteme, bestehend aus Stahl-
manufacturés, isolation thermique en polyuréthane et Mediumrohr, einer Wärmedämmung aus Polyurethan
tube de protection en polyéthylène und einer Ummantelung aus Polyethylen
This draft amendment is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 107.
This draft amendment A1, if approved, will modify the European Standard EN 253:2019. If this draft becomes an amendment,
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of
this amendment into the relevant national standard without any alteration.
This draft amendment was established by CEN 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.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 253:2019/prA1:2022 E
worldwide for CEN national Members.
SIST EN 253:2020/oprA1:2022
EN 253:2019/prA1:2022 (E)
Contents Page
European foreword . 3
1 Modifications to Clause 2 . 4
2 Modifications to 4.2.3 . 4
3 Modifications to 4.2.4 . 4
4 Modifications to 4.3.1.1. 4
5 Modifications to 4.3.2.3. 5
6 Modifications to 4.4.4 . 5
7 Modifications to 4.4.5 . 5
8 Modifications to 4.5.3 . 5
9 Modifications to 4.5.6.1. 5
10 Modifications to 5.1.2.5. 5
11 Modifications to 5.2.2 . 5
12 Modifications to 5.2.4 . 5
13 Modifications to 5.3.4 . 6
14 Modifications to Annex A, A.2 . 6
15 Modifications to Annex A, A.5 . 6
16 Modifications to Annex B, B.1 . 6
17 Modifications to Annex B, B.4 . 6
18 Modifications to Annex B, B.5 . 6
19 Modifications to Annex B, Table B.1 . 7
20 Modifications to Annex B, Table B.2, 4.3.1.4 . 7
21 Modifications to Annex B, Table B.4 . 7
22 Modifications to Annex C, Table C.1 . 7
23 Modifications to Annex C, C.4.2 . 7
24 Modifications to Annex C, C.6.1 . 8
25 Modifications to Annex C, C.7 . 8
26 Modifications to Annex D . 8
SIST EN 253:2020/oprA1:2022
EN 253:2019/prA1:2022 (E)
European foreword
This document (EN 253:2019/prA1:2022) 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.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 253:2019.
In comparison with the previous editio
...
Frequently Asked Questions
SIST EN 253:2020/kprA1:2023 is a draft published by the Slovenian Institute for Standardization (SIST). Its full title is "District heating pipes - Bonded single pipe systems for directly buried hot water networks - Factory made pipe assembly of steel service pipe, polyurethane thermal insulation and a casing of polyethylene". This standard covers: This document specifies requirements and test methods for straight lengths of factory made thermally insulated bonded single pipe assemblies for hot water networks in accordance with EN 13941-1, comprising a steel service pipe, polyurethane foam thermal insulation and a casing of polyethylene. The pipe assembly can also include the following additional elements: measuring wires, spacers and diffusion barriers.
This document specifies requirements and test methods for straight lengths of factory made thermally insulated bonded single pipe assemblies for hot water networks in accordance with EN 13941-1, comprising a steel service pipe, polyurethane foam thermal insulation and a casing of polyethylene. The pipe assembly can also include the following additional elements: measuring wires, spacers and diffusion barriers.
SIST EN 253:2020/kprA1:2023 is classified under the following ICS (International Classification for Standards) categories: 23.040.07 - Pipeline and its parts for district heat; 23.040.10 - Iron and steel pipes; 91.140.65 - Water heating equipment. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 253:2020/kprA1:2023 has the following relationships with other standards: It is inter standard links to SIST EN 253:2019+A1:2024, SIST EN 253:2020. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase SIST EN 253:2020/kprA1:2023 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of SIST standards.
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.
Loading comments...