SIST EN 489:2004
(Main)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
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
This European Standard specifies requirements for joints, made under field conditions, between adjacent preinsulated pipes and/or fittings in district heating networks. The specified general requirements are also valid for field made T-branches, bends, reducers, caps, etc.
The standard covers jointing of steel service pipes by means of fusion welding, the connecting of casing ends with joint casings and the thermal insulation with poured rigid PUR foam.
This standard specifies methods for type tests of complete joints and PUR-foam for joints under laboratory conditions. The type tests apply only to straight casing joints which are not-welded.
The requirements of this standard can also be applied to casing pipe weldings/connections of on site made fittings.
The requirements of this standard are aiming at obtaining a technical life of the joints of at least 30 years.
Fernwärmerohre - Werkmaßig gedämmte Verbundmantelrohrsysteme für direkt erdverlegte Fernwärmenetze - Rohrverbindungen für Stahlmediumrohre mit Polyurethan-Wärmedämmung und Außenmantel aus Polyethylen
Tuyaux de chauffage urbain - Systemes bloqués de tuyaux pré-isolés pour les réseaux d'eau chaude enterrés directement - Assemblage pré-isolé pour tube de service en acier, isolation thermique en polyuréthane et tube de protection en polyéthylene
La présente Norme européenne spécifie les caractéristiques des assemblages réalisés in situ entre des tuyaux pré-isolés adjacents et/ou entre des raccords d'un réseau de chauffage urbain. Les prescriptions générales spécifiées sont également valables pour les tés, coudes, réducteurs, bouchons, etc. fabriqués in situ.
La norme porte sur l'assemblage des tubes de service en acier par soudage par fusion, le raccordement des extrémités de tubes de protection à l'aide de protection de l'assemblage et l'isolation thermique à l'aide de mousse rigide de polyuréthane.
La présente norme spécifie les méthodes pour les essais de type en laboratoire des assemblages complets et de la mousse rigide de polyuréthane pour assemblages. Les essais de type s'appliquent seulement aux assemblages droits non soudés.
Les soudures/connexions des tubes de protection sur des raccords fabriqués in situ doivent satisfaire aux prescriptions de la présente norme.
Les prescriptions de la présente norme visent à obtenir une durée de vie technique des assemblages au moins égale à 30 ans.
Cevi za daljinsko ogrevanje – Izolirani vezani cevni sistemi za podzemeljska toplovodna omrežja – Sestav spojev za jeklene cevi, poliuretanske toplotne izolacije in zunanjega polietilenskega plašča
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Standards Content (Sample)
SLOVENSKI STANDARD
01-oktober-2004
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SIST EN 489:2000
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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
Fernwärmerohre - Werkmaßig gedämmte Verbundmantelrohrsysteme für direkt
erdverlegte Fernwärmenetze - Rohrverbindungen für Stahlmediumrohre mit Polyurethan-
Wärmedämmung und Außenmantel aus Polyethylen
Tuyaux de chauffage urbain - Systemes bloqués de tuyaux pré-isolés pour les réseaux
d'eau chaude enterrés directement - Assemblage pré-isolé pour tube de service en acier,
isolation thermique en polyuréthane et tube de protection en polyéthylene
Ta slovenski standard je istoveten z: EN 489:2003
ICS:
23.040.10 Železne in jeklene cevi Iron and steel pipes
91.140.65 Oprema za ogrevanje vode Water heating equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN 489
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2003
ICS 23.040.60 Supersedes EN 489:1994
English version
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
Tuyaux de chauffage urbain - Systèmes bloqués de tuyaux Fernwärmerohre - Werkmaßig gedämmte
pré-isolés pour les réseaux d'eau chaude enterrés Verbundmantelrohrsysteme für direkt erdverlegte
directement - Assemblage pré-isolé pour tube de service Fernwärmenetze - Rohrverbindungen für
en acier, isolation thermique en polyuréthane et tube de Stahlmediumrohre mit Polyurethan-Wärmedämmung und
protection en polyéthylène Außenmantel aus Polyethylen
This European Standard was approved by CEN on 28 November 2002.
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 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 Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovak Republic, Spain, Sweden, Switzerland and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2003 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 489:2003 E
worldwide for CEN national Members.
Contents
page
Foreword.4
Introduction .5
1 Scope .6
2 Normative references .6
3 Terms and definitions.7
4 Requirements .7
4.1 General requirements.7
4.1.1 General requirements for the joint.7
4.1.2 Construction of the joint .7
4.1.3 Competence of the welder and fitter.8
4.1.4 Expected thermal life and long term temperature resistance.8
4.1.5 Steel service pipe weld.8
4.1.6 Polyurethane rigid foam insulation (PUR).8
4.1.7 Joint casing .8
4.2 Type test requirements .8
4.2.1 Soil stress test.8
4.2.2 Polyurethane rigid foam insulation (PUR) properties.9
4.3 Installation instructions .9
4.3.1 General.9
4.3.2 Work environment .9
4.3.3 Cleaning.9
4.3.4 Surveillance system .9
4.3.5 Steel site weld .9
4.3.6 Joint casing .9
4.3.7 Foaming .10
5 Methods for type tests.10
5.1 Soil stress test.10
5.1.1 General.10
5.1.2 Sand box.10
5.1.3 Sand .11
5.1.4 Test specimens .11
5.1.5 Sand box test.11
5.1.6 Water impermeability test .11
5.2 Polyurethane rigid foam insulation (PUR).12
5.2.1 General.12
5.2.2 Test specimens .12
5.2.3 Sampling.12
5.2.4 Ageing resistance .12
Annex A (normative) Fusion welding of steel service pipes on site.13
A.1 Material.13
A.2 Welding process .13
A.3 Preparation for welding and lining up .13
A.4 Qualification of welders .13
A.5 Steel weld inspection .13
A.5.1 General.13
A.5.2 Leak-tightness test with air/gas .14
A.5.3 Leak-tightness test with water.14
A.5.4 Radiographic examination.14
A.5.5 Ultrasonic examination .14
Annex B (informative) General guidelines for inspection of the joint on site.15
Annex C (informative) Qualification of fitters installing joints in preinsulated bonded pipe networks .17
C.1 Purpose and scope.17
C.2 Background for training and testing.17
C.3 Subjects for training and testing.17
C.3.1 General.17
C.3.2 Casing of polyethylene (PE) .18
C.3.3 Surveillance.19
C.3.4 PUR-foam system .19
C.3.5 Joint types/jointing systems .20
C.3.6 Installation of joints.21
Foreword
This document (EN 489:2003) 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 August 2003, and conflicting national standards shall be withdrawn at the latest by
August 2003.
This document will supersede EN 489:1994.
Annex A is normative. Annexes B and C are informative.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal,
Slovakia, Spain, Sweden, Switzerland and the United Kingdom.
Introduction
The first edition of EN 489 was approved in 1994. The main areas of the revision are the following:
the title has been amended by ”District heating pipes”;
the term ”underground” has been changed to ”directly buried”;
definitions for ”polyethylene weld” and ”double sealing” have been added;
the requirements for the qualification of work force have been changed and annex C has been added;
requirements concerning double sealing have been added;
the water content of the sand used in the sand box has been limited to maximum 0,5 % (mass fraction).
the former annex C “Assumptions made to establish functional requirements of joints” and all references to it
have been deleted a
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