SIST EN 14419:2009

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Cevi za daljinsko ogrevanje - Izolirani vezani cevni sistemi za podzemeljska toplovodna omrežja - Kontrolni sistemiFernwärmerohre - Werkmäßig gedämmte Verbundmantelrohrsysteme für erdverlegte Fernwärmenetze - ÜberwachungssystemeTuyaux de chauffage urbain - Systèmes bloqués de tuyaux préisolés pour les réseaux d'eau chaude enterrés directement - Systèmes de surveillanceDistrict heating pipes - Preinsulated bonded pipe systems for directly burried hot water networks - Surveillance systems91.140.65Oprema za ogrevanje vodeWater heating equipment23.040.01Deli cevovodov in cevovodi na splošnoPipeline components and pipelines in generalICS:Ta slovenski standard je istoveten z:EN 14419:2009SIST EN 14419:2009en,fr01-maj-2009SIST EN 14419:2009SLOVENSKI
STANDARDSIST EN 14419:20041DGRPHãþD



SIST EN 14419:2009



EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 14419March 2009ICS 23.040.01Supersedes EN 14419:2003
English VersionDistrict heating pipes - Preinsulated bonded pipe systems fordirectly buried hot water networks - Surveillance systemsTuyaux de chauffage urbain - Systèmes bloqués de tuyauxpréisolés pour les réseaux d'eau chaude enterrésdirectement - Systèmes de surveillanceFernwärmerohre - Werkmäßig gedämmteVerbundmantelrohrsysteme für erdverlegteFernwärmenetze - ÜberwachungssystemeThis European Standard was approved by CEN on 3 February 2009.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN 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 translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre:
Avenue Marnix 17,
B-1000 Brussels© 2009 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 14419:2009: ESIST EN 14419:2009



EN 14419:2009 (E) 2 Contents page Foreword . 4Introduction . 51Scope . 62Normative references . 63Terms and definitions . 64Basic functional requirements . 84.1Dependency of Manufacturer of pipe elements. 84.2Performance . 85Manufacture of measuring elements . 95.1General requirements . 95.2Installation, assembly and operation . 95.3Characteristics . 95.4Reliability . 95.5Maintenance . 95.6Longitudinal tightness . 95.7Marking of measuring elements . 95.8Technical documentation . 95.8.1General . 95.8.2For installation of measuring wires within pipe elements . 95.8.3For assembly of measuring elements in the field . 105.8.4For operation of a surveillance system . 106Manufacture of pipe elements with measuring elements . 106.1General requirements . 106.2Compatibility test . 106.2.1Before series production . 106.2.2Test procedure . 106.2.3Replication of test . 106.3Installation of measuring elements . 106.3.1Restrictions regarding type of measuring element . 106.3.2No electrical contact . 106.3.3Connections . 106.3.4Geometry of installation . 116.3.5Spacers . 116.3.6Mechanical tightening . 116.4After pipe element manufacturing . 116.5Measuring wires at free ends . 116.5.1Wire length . 116.5.2Protection of measuring wires . 116.6Tests . 116.6.1General . 116.6.2Continuity of measuring wire . 116.6.3No electrical contact . 116.7Quality control programme . 126.8Technical documentation . 126.8.1General . 126.8.2For assembly of measuring elements in the field . 126.8.3For operation of a surveillance system . 127Assembly of measuring elements in field . 12SIST EN 14419:2009



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7.1Check upon receipt of pipe elements . 127.2Extension of an existing measuring section . 127.2.1Actual state . 127.2.2Change of system . 127.3Wiring design diagram . 127.4Assembly work in joints . 137.5Assembly check . 137.6Test after finishing a measuring section . 137.6.1General . 137.6.2Continuity of measuring elements . 137.6.3No electrical contact and moisture . 137.6.4Functional test . 137.7Test and measurement during system operation . 137.8Quality control programme . 147.9Technical documentation . 14Annex A (informative)
Principal function . 15Annex B (informative)
Principal parts of a measuring section . 16Annex C (normative)
Technical documentation . 17Annex D (normative)
Loop test by pipe Manufacturer . 21D.1General . 21D.2Conductor continuity test with an optical or acoustic signal. . 21D.3Measuring ohmic resistance . 22Annex E (normative)
High voltage test by pipe Manufacturer . 23Annex F (informative)
Quality control programme . 24F.1General . 24F.2Quality control programme for Manufacturer of pipe elements with measuring wires . 24F.3Quality control programme for Contractor assembling the measuring elements in field . 25Annex G (normative)
Loop test in field . 27Annex H (normative)
Measuring of the electrical insulation resistance in field . 28Bibliography . 29
SIST EN 14419:2009



EN 14419:2009 (E) 4 Foreword This document (EN 14419:2009) has been prepared by Technical Committee CEN/TC 107 “Prefabricated District Heating 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 September 2009, and conflicting national standards shall be withdrawn at the latest by September 2009. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 14419:2003. This second edition cancels and replaces the first edition (EN 14419:2003), which has been technically revised. Annexes A, B and F are informative. Annexes C, D, E, G and H are normative. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. SIST EN 14419:2009



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Introduction The first edition of EN 14419 was approved in 2003. The main areas of the current revision are:  testing procedures have been changed in order to include pipe elements with diffusion barriers according to revised version of EN 253:2009;  testing procedures have been changed in order to include pipe elements for twin pipes according to EN 15698-1;  pipe elements produced according to standard for preinsulated flexible pipe systems with bonded metal service pipes EN 15632-4 and standard for twin pipes EN 15698-1 have been added to the definitions of pipe elements suitable for instalment of measuring wires for surveillance systems;  the text regarding testing (cf. 6.4 and 7.1) has been put in agreement with the text in 6.6 (all elements shall be tested);  the term “moisture” has been deleted as a specific term and replaced by a note to the term “detection of moisture”;  the term "QM-Programme" has been changed to "Quality control programme" in order to standardize the wording to other standards under TC 107. This standard is a supplement to:  EN 253, 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  EN 448, District heating pipes – Preinsulated bonded pipe systems for directly buried hot water networks – Fitting assemblies of steel service pipes, polyurethane thermal insulation and outer casing of polyethylene  EN 488, District heating pipes – Preinsulated bonded pipe systems for directly buried hot water networks – Steel valve assembly for steel service pipes, polyurethane thermal insulation and outer casing of polyethylene  EN 489, District heating pipes – Preinsulated bonded pipe systems for directly buried hot water networks – Joint assembly for steel service pipes, polyurethane thermal insulation and outer casing of polyethylene  EN 13941, Design and installation of preinsulated bonded pipe systems for district heating  EN 15632-1, 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 – Preinsulated bonded twin pipe systems for directly buried hot water networks – Part 1: Twin pipe assembly of steel service pipe, polyurethane thermal insulation and outer casing of polyethylene These are all standards for preinsulated bonded pipe systems for directly buried hot water networks. SIST EN 14419:2009



EN 14419:2009 (E) 6 1 Scope This European Standard specifies basic functional requirements for surveillance systems for district heating pipe systems, specific requirements for measuring elements and their installation within preinsulated bonded pipes, valves and fittings, and the field assembly of these measuring elements in pipe joints. This standard specifies requirements for the manufacture of measuring elements, for the manufacture of preinsulated bonded pipe elements with measuring elements and for the assembly of the measuring elements in the field. All requirements and recommendations described in this standard are based on the experience gained with existing surveillance systems and their principal function, cf. Annex A. 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 referenced documents are indispensable for the application 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 253, 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
EN 448, District heating pipes – Preinsulated bonded pipe systems for directly buried hot water networks – Fitting assemblies of steel service pipes, polyurethane thermal insulation and outer casing of polyethylene EN 488, District heating pipes – Preinsulated bonded pipe systems for directly buried hot water networks – Steel valve assembly for steel service pipes, polyurethane thermal insulation and outer casing of polyethylene EN 489, District heating pipes – Preinsulated bonded pipe systems for directly buried hot water networks – Joint assembly for steel service pipes, polyurethane thermal insulation and outer casing of polyethylene 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 – Preinsulated bonded twin pipe systems for directly buried hot water networks – Part 1: Twin pipe assembly of steel service pipe, polyurethane thermal insulation and outer casing of polyethylene EN 61557-2, Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. – Equipment for testing, measuring or monitoring of protective measures – Part 2: Insulation resistance (IEC 61557-2:2007) 3 Terms and definitions For the purposes of this European Standard, the following terms and definitions apply. 3.1 pipe element preinsulated pipes, valves and fittings manufactured according to EN 253, EN 448, EN 488, EN 15632-4 and EN 15698-1 SIST EN 14419:2009



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3.2 pipe system complete pipe installation, including joints, branches, accessories, etc. and adjacent pipes based on pipe element (cf. 3.1) and joints manufactured and assembled in accordance with EN 489 3.3 surveillance system system that consists of measuring sections and measuring instruments for surveillance of pipe systems.
NOTE The principal parts of a measuring section of a surveillance system are given in Annex B. 3.4 system characteristics electrical parameters used by the individual surveillance system for surveillance purpose or for test of functionality 3.5 measuring instrument electrical instrument used for indicating of deviations and disorders, which are sensed by the measuring elements in a measuring section 3.6 measuring section pipe section with continuously connected measuring elements terminating at the connection points NOTE Main pipes and branches can be part of the same measuring section. 3.7 measuring element all elements built-in to the pipe systems that enable the detection of moisture NOTE This can be measuring wires or various measuring sensors. 3.8 measuring wire electrical wire used for detection of moisture and/or for transport of electrical signals relevant for the surveillance system NOTE 1 Depending on the system several measuring wires for different purposes can be used. NOTE 2 The measuring wires can be bare or insulated, straight or twisted two and two. 3.9 measuring sensor component that changes system characteristics when exposed to moisture NOTE A sensor is a component only operating at a specific point. 3.10 detection of moisture detection of moisture-related parameters with measuring instruments NOTE 1 Only moisture in the insulation due to defects or bad workmanship is relevant NOTE 2 The parameters could be electrical resistance and/or impedance. 3.11 deviation result of comparing the values for moisture-related parameters measured by the surveillance system with the values given in the technical documentation SIST EN 14419:2009



EN 14419:2009 (E) 8 3.12 multiple deviations two or more deviations that are present at the same time in a measuring section 3.13 disorder electrical interruption and/or short circuit in a measuring section 3.14 location of moisture procedure to find the position of moisture related parameters
3.15 location of disorder procedure to find the position of a disorder
3.16 installation of measuring elements process of installation of the measuring elements into the district heating pipes during pipe element production 3.17 assembly of measuring elements process where a fitter during assembly of pipe elements connects measuring elements into a measuring section 3.18 connection point accessible place outside the pipe system where a measuring instrument can be connected to a measuring section NOTE The place could be in a shaft, in a house connection, in a measuring post, in a cabinet, etc. 3.19 longitudinal water tightness ability to prevent water spread in longitudinal direction of the pipe, valve, fitting or joint 3.20 maintenance free when no maintenance or service is required on a component in order to retain full functionality of the component during its service life 3.21 service life span of time during which the component is expected to function, given normal maintenance and operation conditions 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; SIST EN 14419:2009



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 detection of deviations;  detection of multiple deviations;  detection of disorders;  location of moisture;  location of disorders. 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. SIST EN 14419:2009



EN 14419:2009 (E) 10 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. 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 element with measuring elements a compatibility test shall be made in order to ensure that system characteristics made available by the Manufacturer of measuring elements (cf. 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. SIST EN 14419:2009



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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, cf. 5.8.2. NOTE 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 according to EN 253, 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. NOTE Pipe elements may be produced without spacers. 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, cf. 5.8.2. 6.4 After pipe elem
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