EN 13941-2:2019/prA1
(Amendment)District heating pipes - Design and installation of thermal insulated bonded single and twin pipe systems for directly buried hot water networks - Part 2: Installation
District heating pipes - Design and installation of thermal insulated bonded single and twin pipe systems for directly buried hot water networks - Part 2: Installation
This European Standard specifies requirements for design, calculation and installation of factory made thermal insulated bonded single and twin pipe systems for directly buried networks for continuous operation with treated hot water at various temperatures up to 120 ºC and occasionally with peak temperatures up to 140 ºC and maximum internal pressure 2,5 MPA. Flexible pipe systems according to EN 15632 are not under the scope of this standard.
The standard EN 13941, Design and installation of thermal insulated bonded single and twin pipe systems for directly buried hot water networks consists of two parts:
a) EN 13941-1: Design;
b) EN 13941-2: Installation.
The requirements and stipulations in this part: prEN 13941-2, form an unbreakable unity with those of prEN 13941-1. This part shall therefore exclusively be used in combination with prEN 13941-1.
The principles of the standard may be applied to thermal insulated pipe systems with pressures higher than 2,5 MPa, provided that special attention is paid to the effects of pressure.
Adjacent pipes, not buried, but belonging to the network (e. g. pipes in ducts, valve chambers, road crossings above ground etc.) may be designed and installed according to this standard.
This standard presupposes the use of treated water, which by softening, demineralisation, de-aeration, adding of chemicals, or otherwise has been treated to effectively prevent internal corrosion and deposits in the pipes.
This standard is not applicable for such units as:
a) pumps;
b) heat exchangers;
c) boilers, tanks;
d) systems behind domestic substations.
Fernwärmerohre - Auslegung und Bauausführung von gedämmten Ein- und Doppelrohr-Verbundsystemen für direkt erdverlegte Fernwärmenetze - Teil 2: Bauausführung
Tuyaux de chauffage urbain - Conception et installation des systèmes bloqués de tuyaux monotubes et bitubes isolés thermiquement pour les réseaux d’eau chaude enterrés directement - Partie 2 : Installation
No scope available
Cevi za daljinsko ogrevanje - Projektiranje in vgradnja toplotno izoliranih spojenih eno- in dvocevnih sistemov za neposredno zakopana vročevodna omrežja - 2. del: Vgradnja - Dopolnilo A1
General Information
Relations
Overview
EN 13941-2:2019/prA1 (CEN) covers the installation of factory-made, thermal insulated bonded single and twin pipe systems for directly buried district heating (hot water) networks. It forms an unbreakable unity with EN 13941-1 (Design) and must be used together with that part. The standard applies to continuously operated treated hot water systems up to 120 °C (occasional peaks to 140 °C) and a maximum internal pressure of 2.5 MPa. Flexible systems per EN 15632 are excluded. Adjacent non-buried network pipes (ducts, valve chambers, road crossings) may also be installed per this standard. Units such as pumps, heat exchangers, boilers, tanks and systems behind domestic substations are outside its scope.
Key topics and technical requirements
- Installation scope: Procedures for directly buried, factory-made bonded single and twin pipe assemblies for district heating.
- Mandatory linkage with design part: Use in combination with EN 13941-1; installation rules complement design requirements.
- Operating limits: Continuous temperatures up to 120 °C, peak up to 140 °C, internal pressure up to 2.5 MPa (principles adaptable to higher pressures with special attention).
- Treated water requirement: Presumes use of chemically/physically treated water to prevent internal corrosion and deposits.
- Welding and jointing:
- Welding procedure specifications (WPS) must follow relevant EN ISO standards (qualification per EN ISO 15610/15613/15614-1 and WPS per EN ISO 15609-1/2).
- Welding procedure qualification records (WPQR) verified using water-filled test pipes.
- Pipe end preparation must follow the project WPS; handling of minor end measurement differences by centring.
- Testing and inspection:
- Pressure tests and visual overpressure inspections (terminology standardized to “overpressure”).
- Guidance on testing chambers and sealing durability at transitions.
- Materials and fusion:
- PE materials with MFR differences ≤ 0.5 g/10 min considered fusible to each other.
- Installation details: Drain/vent assemblies, cable routing, pipe laying in protection tubes, and requirements to avoid damage during insertion and ensure sealing durability.
Applications and users
Practical applications:
- New and rehabilitated directly buried district heating networks, service laterals, and short above-ground transitions.
- Road crossings, valve chambers, ducts and other network elements where factory-made bonded pipe systems are used.
Primary users:
- District heating designers and engineers
- Installation contractors and site supervisors
- Prefabricated pipe manufacturers and quality inspectors
- Utility operators, asset owners, and regulatory authorities
- Consultants preparing specifications and acceptance tests
Related standards
- EN 13941-1 (Design) - essential companion document
- EN 15632 - flexible pipe systems (excluded)
- EN ISO 15609-1 / 15609-2, EN ISO 15610, EN ISO 15613, EN ISO 15614-1 - referenced welding standards
- EN 17248 - terms and definitions (referenced)
Using EN 13941-2:2019/prA1 ensures consistent, safe installation practice for bonded insulated district heating pipes and aligns installation with design, materials, welding and testing requirements for reliable hot-water network operation.
Standards Content (Sample)
SLOVENSKI STANDARD
01-junij-2021
Cevi za daljinsko ogrevanje - Projektiranje in vgradnja toplotno izoliranih spojenih
eno- in dvocevnih sistemov za neposredno zakopana vročevodna omrežja - 2. del:
Vgradnja - Dopolnilo A1
District heating pipes - Design and installation of thermal insulated bonded single and
twin pipe systems for directly buried hot water networks - Part 2: Installation
Fernwärmerohre - Auslegung und Bauausführung von gedämmten Ein- und Doppelrohr-
Verbundsystemen für direkt erdverlegte Fernwärmenetze - Teil 2: Bauausführung
Tuyaux de chauffage urbain - Conception et installation des systèmes bloqués de tuyaux
monotubes et bitubes isolés thermiquement pour les réseaux d’eau chaude enterrés
directement - Partie 2 : Installation
Ta slovenski standard je istoveten z: EN 13941-2:2019/prA1
ICS:
23.040.07 Cevovodi za daljinsko Pipeline and its parts for
ogrevanje in njihovi deli district heat
91.140.10 Sistemi centralnega Central heating systems
ogrevanja
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
DRAFT
EUROPEAN STANDARD
EN 13941-2:2019
NORME EUROPÉENNE
EUROPÄISCHE NORM
prA1
April 2021
ICS 23.040.07; 23.040.10; 91.140.10
English Version
District heating pipes - Design and installation of thermal
insulated bonded single and twin pipe systems for directly
buried hot water networks - Part 2: Installation
Tuyaux de chauffage urbain - Conception et installation Fernwärmerohre - Auslegung und Bauausführung von
des systèmes bloqués de tuyaux monotubes et bitubes gedämmten Ein- und Doppelrohr-Verbundsystemen
isolés thermiquement pour les réseaux d'eau chaude für direkt erdverlegte Fernwärmenetze - Teil 2:
enterrés directement - Partie 2 : Installation Bauausführung
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 13941-2:2019. 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
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13941-2:2019/prA1:2021 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
1 Modifications to Clause 2 "Normative references" . 4
2 Modifications to subclause 11.3.1.3 "Welding procedures and the welding process" . 4
3 Modifications to subclause 11.3.1.6.1 "Joint edge preparation and different wall
thickness" . 4
4 Modification to "Figure 4" . 5
5 Modifications to subclause 11.5.2 "Visual test with over pressure by air" . 5
6 Modification to subclause 11.5.4.1 "General" . 5
7 Modification to subclause 11.6.1 "General" . 5
8 Modifications to subclause 11.6.2 "Joints" . 5
9 Modification to subclause 11.9 "Electrical and telecommunication cable of the
systems" . 6
10 Modification to subclause 11.11.3 "Pipe laying in protection tubes" . 6
11 Modification to Figure 14 . 6
European foreword
This document (EN 13941-2:2019/prA1:2021) 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.
EN 13941, District heating pipes — Design and installati
...
Frequently Asked Questions
EN 13941-2:2019/prA1 is a draft published by the European Committee for Standardization (CEN). Its full title is "District heating pipes - Design and installation of thermal insulated bonded single and twin pipe systems for directly buried hot water networks - Part 2: Installation". This standard covers: This European Standard specifies requirements for design, calculation and installation of factory made thermal insulated bonded single and twin pipe systems for directly buried networks for continuous operation with treated hot water at various temperatures up to 120 ºC and occasionally with peak temperatures up to 140 ºC and maximum internal pressure 2,5 MPA. Flexible pipe systems according to EN 15632 are not under the scope of this standard. The standard EN 13941, Design and installation of thermal insulated bonded single and twin pipe systems for directly buried hot water networks consists of two parts: a) EN 13941-1: Design; b) EN 13941-2: Installation. The requirements and stipulations in this part: prEN 13941-2, form an unbreakable unity with those of prEN 13941-1. This part shall therefore exclusively be used in combination with prEN 13941-1. The principles of the standard may be applied to thermal insulated pipe systems with pressures higher than 2,5 MPa, provided that special attention is paid to the effects of pressure. Adjacent pipes, not buried, but belonging to the network (e. g. pipes in ducts, valve chambers, road crossings above ground etc.) may be designed and installed according to this standard. This standard presupposes the use of treated water, which by softening, demineralisation, de-aeration, adding of chemicals, or otherwise has been treated to effectively prevent internal corrosion and deposits in the pipes. This standard is not applicable for such units as: a) pumps; b) heat exchangers; c) boilers, tanks; d) systems behind domestic substations.
This European Standard specifies requirements for design, calculation and installation of factory made thermal insulated bonded single and twin pipe systems for directly buried networks for continuous operation with treated hot water at various temperatures up to 120 ºC and occasionally with peak temperatures up to 140 ºC and maximum internal pressure 2,5 MPA. Flexible pipe systems according to EN 15632 are not under the scope of this standard. The standard EN 13941, Design and installation of thermal insulated bonded single and twin pipe systems for directly buried hot water networks consists of two parts: a) EN 13941-1: Design; b) EN 13941-2: Installation. The requirements and stipulations in this part: prEN 13941-2, form an unbreakable unity with those of prEN 13941-1. This part shall therefore exclusively be used in combination with prEN 13941-1. The principles of the standard may be applied to thermal insulated pipe systems with pressures higher than 2,5 MPa, provided that special attention is paid to the effects of pressure. Adjacent pipes, not buried, but belonging to the network (e. g. pipes in ducts, valve chambers, road crossings above ground etc.) may be designed and installed according to this standard. This standard presupposes the use of treated water, which by softening, demineralisation, de-aeration, adding of chemicals, or otherwise has been treated to effectively prevent internal corrosion and deposits in the pipes. This standard is not applicable for such units as: a) pumps; b) heat exchangers; c) boilers, tanks; d) systems behind domestic substations.
EN 13941-2:2019/prA1 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; 91.140.10 - Central heating systems. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 13941-2:2019/prA1 has the following relationships with other standards: It is inter standard links to EN 13941-2:2019+A1:2021, EN 13941-2:2019. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
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