SIST EN 14419:2020

SLOVENSKI STANDARD
SIST EN 14419:2020
01-februar-2020
Nadomešča:
SIST EN 14419:2009
Cevi za daljinsko ogrevanje - Predizolirani enocevni ali dvocevni sistemi za
vkopana vročevodna omrežja - Nadzorni sistemi
District heating pipes - Bonded single and twin pipe systems for buried hot water
networks - Surveillance systems
Fernwärmerohre - Werkmäßig gedämmte Verbundmantelrohrsysteme für erdverlegte
Fernwärmenetze - Überwachungssysteme
Tuyaux de chauffage urbain - Systèmes bloqués de monotubes et bitubes pour les
réseaux d'eau chaude enterrés - Systèmes de surveillance
Ta slovenski standard je istoveten z: EN 14419:2019
ICS:
23.040.07 Cevovodi za daljinsko Pipeline and its parts for
ogrevanje in njihovi deli district heat
91.140.65 Oprema za ogrevanje vode Water heating equipment
SIST EN 14419:2020 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 14419:2020

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SIST EN 14419:2020


EN 14419
EUROPEAN STANDARD

NORME EUROPÉENNE

October 2019
EUROPÄISCHE NORM
ICS 23.040.07 Supersedes EN 14419:2009
English Version

District heating pipes - Bonded single and twin pipe
systems for buried hot water networks - Surveillance
systems
Tuyaux de chauffage urbain - Systèmes bloqués de Fernwärmerohre - Werkmäßig gedämmte
monotubes et bitubes pour les réseaux d'eau chaude Verbundmantelrohrsysteme für erdverlegte
enterrés - Systèmes de surveillance Fernwärmenetze - Überwachungssysteme
This European Standard was approved by CEN on 12 August 2019.

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
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 14419:2019 E
worldwide for CEN national Members.

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SIST EN 14419:2020
EN 14419:2019 (E)
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Basic functional requirements . 5
5 Manufacture of measuring elements . 6
6 Manufacture of pipe elements with measuring elements . 7
7 Assembly of measuring elements in field . 9
Annex A (informative)  Principal function . 11
Annex B (informative) Principal parts of a measuring section . 12
Annex C (normative) Technical documentation . 13
Annex D (normative)  Loop test by pipe manufacturer . 16
Annex E (normative) High voltage test by pipe manufacturer . 18
Annex F (informative) Quality control programme . 19
Annex G (normative) Loop test in field . 21
Annex H (normative) Measuring of the electrical insulation resistance in field . 22
Annex I (informative) Waste treatment and recycling . 23
Bibliography . 24

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SIST EN 14419:2020
EN 14419:2019 (E)
European foreword
This document (EN 14419:2019) 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 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 April 2020, and conflicting national standards shall be withdrawn at
the latest by April 2020.
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.
This document supersedes EN 14419:2009.
In comparison with the previous edition, the main changes in this new edition of EN 14419 are:
— editorial changes to the new structure of standards prepared by the Technical Committee CEN/TC107;
— Annexes A, B, F and I are informative. Annexes C, D, E, G and H are normative;
— terms and definitions from Clause 3 have been moved to EN 17248.
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.
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SIST EN 14419:2020
EN 14419:2019 (E)
Introduction
This document is a supplement to:
— EN 253, 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
— EN 448, District heating pipes — Bonded pipe systems for directly buried hot water networks — Factory
made fitting assemblies of steel service pipes, polyurethane thermal insulation and a casing of polyethylene
— EN 488, District heating pipes — Bonded single pipe systems for directly buried hot water networks —
Factors made steel valve assembly for steel service pipes, polyurethane thermal insulation and a casing of
polyethylene
— EN 489-1, District heating pipes — Bonded single and twin pipe systems for directly buried hot water
networks — Part 1: Joint casing assemblies and thermal insulation for hot water networks in accordance
with EN 13941 1
— 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 13941-2, District heating pipes — Design and installation of thermal insulated bonded single and twin
pipe systems for directly buried hot water networks — Part 2: Installation
— EN 15632-1:2009+A1:2014, District heating pipes - Pre-insulated flexible pipe systems - Part 1:
Classification, general requirements and test methods
— EN 15632-4, District heating pipes — Pre-insulated flexible pipe systems — Part 4: Bonded system with
metal service pipes; requirements and test methods
— EN 15698-1, District heating pipes — Bonded twin pipe systems for directly buried hot water networks —
Part 1: Factory made twin pipe assembly of steel service pipe, polyurethane thermal insulation and one
casing of polyethylene
— EN 15698-2, District heating pipes — Bonded twin pipe systems for directly buried hot water networks —
Part 2: Factory made fitting and valve assembly of steel service pipes, polyurethane thermal insulation and
outer casing of polyethylene
— EN 17248, District heating and district cooling pipe systems — Terms and definitions
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SIST EN 14419:2020
EN 14419:2019 (E)
1 Scope
This document specifies requirements and test methods for surveillance systems for directly buried hot
water networks in accordance with EN 13941-1 and EN 13941-2.
This document specifies requirements for the manufacture of measuring elements, for the manufacture of
factory made bonded pipe, fitting and valve assemblies with measuring elements as well as for the assembly
of the measuring elements in the field.
All requirements and recommendations described in this document are based on the experience gained with
existing surveillance systems and their principle function.
The specific requirements given are only valid for electrical wire based surveillance systems forming an
integral part of the pipes, valves, fittings and joints.
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 61557-2, Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. —
Equipment for testing, measuring or monitoring of protective measures — Part 2: Insulation resistance
EN 17248, District heating and district cooling pipe systems — Terms and definitions
3 Terms and definitions
For the purposes of this document, the terms and definitions are given in EN 17248.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp
4 Basic functional requirements
4.1 Dependency of manufacturer of pipe elements
The function of a surveillance system with similar measuring elements shall be independent of any
manufacturer of pipe elements and of any Manufacturer of joints for pipe systems.
4.2 Performance
The surveillance system shall be able to perform:
— detection of moisture;
— detection of deviations;
— detection of multiple deviations;
— detection of disorders;
— location of moisture;
— location of disorders.
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EN 14419:2019 (E)
NOTE The measuring system and type of technology used can vary provided the performance requirements listed
can be achieved.
5 Manufacture of measuring elements
5.1 General requirements
Measuring elements shall be part of a surveillance system that fulfils the basic functional requirements given
in Clause 4.
5.2 Installation, assembly and operation
Measuring elements shall be suitable for installation, assembly and operating conditions with respect to
thermal, mechanical and chemical conditions in pipe systems.
5.3 Characteristics
Measuring elements of a specific surveillance system shall have uniform system characteristics.
5.4 Reliability
Measuring elements shall have at least the same service life as a pipe system.
5.5 Maintenance
Measuring elements and other parts of the surveillance system for installation in the ground shall be
maintenance free.
5.6 Longitudinal tightness
Measuring elements shall not influence the longitudinal water tightness of the pipe insulation negatively.
5.7 Marking of measuring elements
If the measuring elements are marked to indicate different functions, the marking shall be durable under
normal operating conditions for pipe systems during the service life of the system.
5.8 Technical documentation
5.8.1 General
The following documents shall be available on request:
5.8.2 For installation of measuring wires within pipe elements
— documents given in Annex C, Table C.1 positions No 1-6.
5.8.3 For assembly of measuring elements in the field
— documents given in Annex C, Table C.2 positions No 1-7.
5.8.4 For operation of a surveillance system
— documents given in Annex C, Table C.3 positions No 1-3.
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SIST EN 14419:2020
EN 14419:2019 (E)
6 Manufacture of pipe elements with measuring elements
6.1 General requirements
Measuring elements to be installed within pipe elements shall fulfil all the requirements given in Clause 5.
6.2 Compatibility test
6.2.1 Before series production
Before series production of pipe elements with measuring elements a compatibility test shall be made in
order to ensure that system characteristics made available by the manufacturer of measuring elements (see
5.8.2) are fulfilled during the production.
6.2.2 Test procedure
The manufacturer of pipe elements shall develop and describe a test procedure that fulfils the requirements
relevant for the specific surveillance system.
6.2.3 Replication of test
The compatibility test shall be replicated every time the production process is changed or the type of
measuring element is changed.
6.3 Installation of measuring elements
6.3.1 Restrictions regarding type of measuring element
Only measuring wires shall be installed in pipe elements.
6.3.2 No electrical contact
The installation of measuring wires within pipe elements shall ensure that no electrical contact occurs
between individual conductors of the measuring wires, between conductors and any service pipe or between
conductors and any electrical conductive diffusion barrier.
NOTE The definition of electrical contact is given in Annex E.
6.3.3 Connections
Connections of measuring wires shall not be located in pipe elements.
Connection of measuring wires inside T-fittings can be accepted. The position of the connection shall be
properly registered in the documentation material given in 6.8.
6.3.4 Geometry of installation
Measuring wires shall be installed inside the pipe elements in accordance with the technical documentation
made available by the manufacturer of the measuring element, see 5.8.2.
The distance between measuring wire and the service pipe should be minimum 10 mm.
6.3.5 Spacers
In order to prevent the measuring wires being damaged during pipe element manufacturing, spacers used
for positioning of the measuring wires inside the pipe elements shall be constructed and applied in such a
way that the measuring wires are easily movable lengthwise before the manufacturing starts.
Pipe elements may be produced without spacers.
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EN 14419:2019 (E)
6.3.6 Mechanical tightening
If required before pipe element manufacturing, mechanical tightening of the measuring wire shall be
performed within the limitations given in the technical documentation made available by the manufacturer
of measuring element, see 5.8.2.
6.4 After pipe element manufacturing
All pipe elements shall fulfil the tests according to 6.6.
6.5 Measuring wires at free ends
6.5.1 Wire length
Measuring wires led out at the end of the thermal insulation of pipe elements shall exceed the length of the
service pipe with minimum 20 mm.
6.5.2 Protection of measuring wires
Measuring wires led out at the end of the thermal insulation of pipe elements shall be protected against
damages during transport and handling.
The wires may be fixed to the thermal insulation.
6.6 Tests
6.6.1 General
The following tests in 6.6.2 and 6.6.3 are acceptance tests for manufacturing of pipe elements with
measuring element. Alternative tests may be used during production of the pipe element.
6.6.2 Continuity of measuring wire
Test of continuity of measuring wires shall be performed by a loop test according to Annex D.
6.6.3 No electrical contact
Test for no electrical contact (see 6.3.2) shall be made by measuring of the electrical insulation resistance by
a high voltage test. Method and criteria for passing of test are given in Annex E.
6.7 Quality control programme
Activities in accordance with Annex F, F.2 should be incorporated in the quality control programme of the
manufacturer.
6.8 Technical documentation
6.8.1 General
The following documents shall be available on request:
6.8.2 For assembly of measuring elements in the field
— Documents made available by the manufacturer of measuring element, see 5.8.3;
— Documents given in Annex C, Table C.2 position No 8.
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6.8.3 For operation of a surveillance system
— Documents made available by the manufacturer of measuring element, see 5.8.4;
— Documents given in Annex C, Table C.3 positions No 3.
7 Assembly of measuring elements in field
7.1 Check upon receipt of pipe elements
A quality check should be made upon receipt of pipe elements. The following activities should be included:
— check for continuity of measuring wire by a loop resistance test according to Annex G;
— check for no electrical contact by measuring of the electrical insulation resistance according to Annex H;
— visual check of wiring ends for damages.
7.2 Extension of an existing measuring section
7.2.1 Actual state
For principle parts of a measuring sec
...