EN 253:2009+A1:2013/FprA2

District heating pipes - Preinsulated bonded pipe systems for directly buried hot water networks - Pipe assembly of steel service pipe, polyurethane thermal insulation and outer casing of polyethylene

This European Standard specifies requirements and test methods for straight lengths of prefabricated thermally insulated pipe-in-pipe assemblies for directly buried hot water networks, comprising a steel service pipe from DN 15 to DN 1200, rigid polyurethane foam insulation and an outer casing of polyethylene. The pipe assembly may also include the following additional elements: measuring wires, spacers and diffusion barriers.
This standard applies only to insulated pipe assemblies, for continuous operation with hot water at various temperatures up to 120 °C and occasionally with a peak temperature up to 140 °C.
The estimation of expected thermal life with continuous operation at various temperatures is outlined in Annex B.

Fernwärmerohre - Werkmäßig gedämmte Verbundmantelrohrsysteme für direkt erdverlegte Fernwärmenetze - Verbund-Rohrsystem bestehend aus Stahl-Mediumrohr, Polyurethan-Wärmedämmung und Außenmantel aus Polyethylen

Tuyaux de chauffage urbain - Systèmes bloqués de tuyaux préisolés pour les réseaux d'eau chaude enterrés directement - Tube de service en acier, isolation thermique en polyuréthane et protection en polyéthylène

Cevi za daljinsko ogrevanje - Izolirani vezani cevni sistemi za podzemeljska toplovodna omrežja - Cevni sestav iz jeklene cevi, poliuretanske toplotne izolacije in zunanjega polietilenskega plašča

General Information

• Status: Not Published
• ICS: 23.040.10 - Iron and steel pipes
• Technical Committee: CEN/TC 107 - Pre-fabricated district heating pipe systems
• Drafting Committee: CEN/TC 107/WG 2 - Basic consideration
• Current Stage: 5060 - Closure of Vote - Formal Approval
• Start Date: 16-Jun-2015
• Due Date: 29-Jun-2015
• Completion Date: 16-Jun-2015
• Ref Project: SIST EN 253:2009+A1:2014/kprA2:2015 - District heating pipes - Preinsulated bonded pipe systems for directly buried hot water networks - Pipe assembly of steel service pipe, polyurethane thermal insulation and outer casing of polyethylene

Relations

• Merged Into: EN 253:2009+A2:2015 - District heating pipes - Preinsulated bonded pipe systems for directly buried hot water networks - Pipe assembly of steel service pipe, polyurethane thermal insulation and outer casing of polyethylene
• Effective Date: 01-Jul-2015
• Amends: EN 253:2009+A1:2013 - District heating pipes - Preinsulated bonded pipe systems for directly buried hot water networks - Pipe assembly of steel service pipe, polyurethane thermal insulation and outer casing of polyethylene
• Effective Date: 05-Dec-2012
• Amends: EN 253:2009 - District heating pipes - Preinsulated bonded pipe systems for directly buried hot water networks - Pipe assembly of steel service pipe, polyurethane thermal insulation and outer casing of polyethylene
• Effective Date: 08-Oct-2012

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 253:2009+A1:2014/oprA2:2014
01-februar-2014
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WRSORYRGQDRPUHåMD&HYQLVHVWDYL]MHNOHQHFHYLSROLXUHWDQVNHWRSORWQHL]RODFLMH
LQ]XQDQMHJDSROLHWLOHQVNHJDSODãþD
District heating pipes - Preinsulated bonded pipe systems for directly buried hot water
networks - Pipe assembly of steel service pipe, polyurethane thermal insulation and
outer casing of polyethylene
Fernwärmerohre - Werkmäßig gedämmte Verbundmantelrohrsysteme für direkt
erdverlegte Fernwärmenetze - Verbund-Rohrsystem bestehend aus Stahl-Mediumrohr,
Polyurethan-Wärmedämmung und Außenmantel aus Polyethylen
Tuyaux de chauffage urbain - Systèmes bloqués de tuyaux préisolés pour les réseaux
d'eau chaude enterrés directement - Tube de service en acier, isolation thermique en
polyuréthane et protection en polyéthylène
Ta slovenski standard je istoveten z: EN 253:2009+A1:2013/prA2
ICS:
23.040.10 Železne in jeklene cevi Iron and steel pipes
91.140.65 Oprema za ogrevanje vode Water heating equipment
SIST EN 253:2009+A1:2014/oprA2:2014 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

SIST EN 253:2009+A1:2014/oprA2:2014

SIST EN 253:2009+A1:2014/oprA2:2014

EUROPEAN STANDARD
DRAFT
EN 253:2009+A1:2013
NORME EUROPÉENNE
EUROPÄISCHE NORM
prA2
December 2013
ICS 23.040.10
English Version
District heating pipes - Preinsulated bonded pipe systems for
directly buried hot water networks - Pipe assembly of steel
service pipe, polyurethane thermal insulation and outer casing of
polyethylene
Tuyaux de chauffage urbain - Systèmes bloqués de tuyaux Fernwärmerohre - Werkmäßig gedämmte
préisolés pour les réseaux d'eau chaude enterrés Verbundmantelrohrsysteme für direkt erdverlegte
directement - Tube de service en acier, isolation thermique Fernwärmenetze - Verbund-Rohrsystem bestehend aus
en polyuréthane et protection en polyéthylène Stahl-Mediumrohr, Polyurethan-Wärmedämmung und
Außenmantel 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 A2, if approved, will modify the European Standard EN 253:2009+A1:2013. 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, 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: Avenue Marnix 17, B-1000 Brussels
© 2013 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 253:2009+A1:2013/prA2:2013 E
worldwide for CEN national Members.

SIST EN 253:2009+A1:2014/oprA2:2014
EN 253:2009+A1:2013/prA2:2013 (E)
Contents Page
Foreword .3
Introduction .4
1 Changes to clause 4.2, Steel service pipes .5
4.2.1 Specification .5
2 Changes to sub-clause 4.4, Polyurethane rigid foam insulation (PUR) .5
4.4.2 Cell structure .6
4.4.4 Foam density .6
4.4.5 Water absorption at elevated temperature .6
3 Changes to sub-clause 5.1.2, Test specimens .6
4 Changes to sub-clause 5.3, Polyurethane rigid foam insulation (PUR) .6
5.3.2 Cell structure .6
5.3.3 Compressive strength .7
5 Changes to Annex D, Guidelines for inspection and testing (informative) .8
6 Changes to Annex F, Thermal conductivity of pre-insulated pipes - Test procedure
(normative) .9
F.5.7 Axial heat loss.9

SIST EN 253:2009+A1:2014/oprA2:2014
EN 253:2009+A1:2013/prA2:2013 (E)
Foreword
This document (EN 253:2009+A1:2013/prA2:2013) 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 document is currently submitted to the CEN Enquiry.
SIST EN 253:2009+A1:2014/oprA2:2014
EN 253:2009+A1:2013/prA2:2013 (E)
Introduction
This document contains the following amendments to EN 253:2009:
The use of steel grade P235TR1 has been restricted to medium pipe diameters ≤ 60,3 mm (DN 50) Table 1,
Steel service pipe specification) and the text below the table has been amended accordingly.
Requirements and test methods for the following properties of the polyurethane rigid foam insulation (PUR)
have been reintroduced in the standard:
 cell structure (uniformity, cell size, closed cell content);
 foam density;
 water absorption at elevated temperature.
The informative Annex D, Guidelines for inspection and testing, has been amended according to the
reintroduction of requirements and test methods for the polyurethane rigid foam insulation (PUR).
The headline of clause F.5.7, Axial heat loss, has been corrected.
SIST EN 253:2009+A1:2014/oprA2:2014
EN 253:2009+A1:2013/prA2:2013 (E)
1 Changes to clause 4.2, Steel service pipes
Delete the present subclause 4.2.1 and substitute by the following new text and Table 1:
4.2.1 Specification
The technical delivery conditions of the steel service pipe shall be in accordance with Table 1.
Table 1 — Steel service pipe specification
a
Type of pipe Diameter EN standard
Material
Seamless All EN 10216-2 P235GH
b
P235TR1
≤ 60,3 mm (DN 50) EN 10217-1
or
ERW
P235TR2
All
ERW EN 10217-2 P235GH
SAW All EN 10217-5 P235GH
a
Equivalent or higher steel grades according to approved EN standards may be used by agreement.
b
If P235TR1 material is used an impact test at 0 ºC as for P235TR2 shall be performed.

For higher steel grades than those given in table 1 the yield strength is defined in their related standards. If
such higher steel grades are used for medium pipes, it shall be verified that all components used in the
involved part of the system are compatible to the higher yield strength of the pipes.
Further information on the required steel grades is given in prEN 13941-1:20XX , clauses 5.3.2. and 5.3.3.
All steel pipes and components used for manufacturing of pipe assemblies under the scope of this standard
shall as a minimum be delivered to the manufacturer with an inspection certificate 3.1 according to EN 10204.
The inspection certifica
...