SIST EN 14408-1:2005

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Cevni sistemi iz polimernih materialov za obnovo podzemnih omrežij za oskrbo s plinom - 1. del: SplošnoKunststoff-Rohrleitungssysteme für die Renovierung von erdverlegten Gasversorgungsnetzwerken - Teil 1: AllgemeinesSystemes de canalisations plastiques pour la rénovation des réseaux de gaz enterrés - Partie 1 : GénéralitésPlastics piping systems for renovation of underground gas supply networks - Part 1: General91.140.40Sistemi za oskrbo s plinomGas supply systems83.140.30Cevi, fitingi in ventili iz polimernih materialovPlastics pipes, fittings and valvesICS:Ta slovenski standard je istoveten z:EN 14408-1:2004SIST EN 14408-1:2005en,fr,de01-januar-2005SIST EN 14408-1:2005SLOVENSKI
STANDARD



SIST EN 14408-1:2005



EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 14408-1September 2004ICS 23.040.20; 23.040.45English versionPlastics piping systems for renovation of underground gassupply networks - Part 1: GeneralSystèmes de canalisations plastiques pour la rénovationdes réseaux de gaz enterrés - Partie 1 : GénéralitésKunststoff-Rohrleitungssysteme für die Renovierung vonerdverlegten Gasversorgungsnetzwerken - Teil 1:AllgemeinesThis European Standard was approved by CEN on 29 July 2004.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 Central Secretariat 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 Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2004 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 14408-1:2004: ESIST EN 14408-1:2005



EN 14408-1:2004 (E) 2 Contents Page Foreword.3 Introduction.5 1 Scope.6 2 Normative references.6 3 Terms, definitions, symbols and abbreviations.6 4 Pipes at the "M" stage.14 5 Fittings at the "M" stage.15 6 Valves.16 7 Fitness for purpose of the Lining at the "I" stage.16 8 Installation practice.17 Annex A (informative)
Recommended scheme for assessment of conformity.22 Bibliography.25
SIST EN 14408-1:2005



EN 14408-1:2004 (E) 3 Foreword This document (EN 14408-1:2004) has been prepared by Technical Committee CEN/TC 155 "Plastics piping systems and ducting systems", the secretariat of which is held by NEN. 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 March 2005, and conflicting national standards shall be withdrawn at the latest by March 2005. This document is a part of a System Standard for plastics piping systems of various materials used for renovation of existing pipelines in a specified application area. System standards for renovation dealing with the following applications are either available or in preparation: — Plastics piping systems for renovation of underground non-pressure drainage and sewerage networks;
— Plastics piping systems for renovation of underground water supply networks;
— Plastics piping systems for renovation of underground gas supply networks (this application);
— Plastics piping systems for renovation of underground drainage and sewerage networks under pressure; — Plastics piping systems for renovation of industrial pipelines.
These System Standards are distinguished from those for conventionally installed plastics piping systems by setting requirements for certain characteristics in the as-installed condition, after site processing. This is in addition to specifying requirements for system components as manufactured. Each of the System Standards comprises a: — Part 1:
General (this document) and all applicable renovation technique family related parts from the following list:
— Part 2:
Lining with continuous pipes — Part 3:
Lining with close-fit pipes — Part 4:
Lining with cured-in-place pipes — Part 5:
Lining with discrete pipes (not envisaged for this application) — Part 6:
Lining with inserted hoses (not envisaged for this application) — Part 7:
Lining with spirally-wound pipes (not envisaged for this application) A consistent structure of clause headings has been adopted for all parts to facilitate direct comparisons across renovation technique families. Figure 1 shows the common part and clause structure and the relationship between EN 14408 and the system standards for other application areas. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. SIST EN 14408-1:2005



EN 14408-1:2004 (E) 4
Figure 1  Format of the renovation system standard SIST EN 14408-1:2005



EN 14408-1:2004 (E) 5 Introduction The requirements for any given renovation technique family are covered by Part 1: General, applied in conjunction with the relevant other part. For example, for the requirements relating to Lining with continuous pipes, it is necessary to refer to both parts 1 and 2. Complementary information is contained in ISO/TR 11295[7] and by supporting standard EN 13689[1], listed in the bibliography. Not all technique families are applicable to every area of application, and this is reflected in the part numbers actually included in each System Standard. For the present document the parts 1, 2 1), 3 and 4 1) of EN 14408 apply. Recommended schemes for assessment of conformity of the plastics piping system with all relevant requirements are provided by way of informative annexes to each part.
1)
At the date of publication of this document, the standardization work on prEN 14408-2 and prEN 14408-4 has not started. SIST EN 14408-1:2005



EN 14408-1:2004 (E) 6 1 Scope This document specifies the requirements and test methods for plastics piping systems used for renovation of underground gas supply networks. It is applicable to pipes and fittings as manufactured as well as to the installed lining system; it does not cover sprayed coatings, the existing pipeline or any annular filler. Functional recommendations on this subject are covered by EN 12007 parts 1 and 4. This part of EN 14408 deals with the general requirements common to all relevant renovation techniques as defined in 3.2. 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 12007-1, Gas supply systems — Pipelines for maximum operating pressure up to and including 16 bar — Part 1: General functional recommendations EN 12007-2, Gas supply systems — Pipelines for maximum operating pressure up to and including 16 bar — Part 2: Specific functional recommendations for polyethylene (MOP up to and including 10 bar) EN 12007-4, Gas supply systems — Pipelines for maximum operating pressure up to and including 16 bar — Part 4: Specific functional recommendations for renovation EN 12327, Gas supply systems — Pressure testing, commissioning and decommissioning procedures — Functional requirements EN 14408-3, Plastics piping systems for renovation of underground gas supply networks — Part 3: Lining with close-fit pipes
EN ISO 472:2001, Plastics - Vocabulary (ISO 472:1999) EN ISO 1043-1:2001, Plastics — Symbols and abbreviated terms — Part 1: Basic polymers and their special characteristics (ISO 1043-1:2001)
3 Terms, definitions, symbols and abbreviations For the purposes of this document, the terms, definitions, symbols and abbreviations given in EN ISO 472:2001 and EN ISO 1043-1:2001 and the following apply. 3.1 General terms and definitions 3.1.1 pipeline system interconnecting pipe network for the conveyance of fluids 3.1.2 rehabilitation all measures for restoring or upgrading the performance of an existing pipeline system SIST EN 14408-1:2005



EN 14408-1:2004 (E) 7 3.1.3 renovation work incorporating all or part of the original fabric of the pipeline by means of which its current performance is improved 3.1.4 replacement rehabilitation of an existing pipeline system by the installation of a new pipeline system, without incorporating the original fabric 3.1.5 maintenance
keeping an existing pipeline system operational without the installation of additional fabric 3.1.6 repair rectification of local damage 3.1.7 lining pipe pipe to be inserted for renovation purposes 3.1.8 liner lining pipe after installation 3.1.9 lining system lining pipe and all relevant fittings for insertion into an existing pipeline for the purposes of renovation
3.1.10 renovated pipeline system
the existing pipeline system plus the installed lining system used to renovate it, plus any grout or annular filling material used 3.1.11 characteristic property, dimension or other feature of a material or component 3.1.12 declared value limiting value of a characteristic declared in advance by lining system supplier which becomes the requirement for the purposes of assessment of conformity 3.1.13 annular filler material for grouting annular space between existing pipeline and lining system 3.1.14 grouting process of filling voids around the lining system 3.1.15 "M" stage stage as manufactured, before any subsequent site processing of components associated with the particular renovation technique SIST EN 14408-1:2005



EN 14408-1:2004 (E) 8 3.1.16 "I" stage stage as installed, i.e. in final configuration after any site processing associated with the particular renovation technique
3.1.17 simulated installation installation of a lining system into a simulated host pipeline, using representative equipment and processes, to provide samples for testing which are representative of an actual installation 3.1.18 simulated host pipeline section of pipeline, which is not part of an operational network, but which replicates the environment of an operational network 3.1.19 technique family group of renovation techniques which are considered to have common characteristics for standardisation purposes 3.1.20 independent pressure pipe liner liner which is capable on its own of resisting without failure all applicable internal loads throughout its design life 3.1.21 interactive pressure pipe liner liner which relies on the host pipe for some measure of radial support in order to resist without failure all applicable internal loads throughout its design life 3.1.22 service line pipework from the main to the point of delivery of the gas into the installation pipework 3.2 Terms and definitions related to techniques The various techniques for renovation of underground gas supply networks are shown schematically in Figure 2. NOTE
For definitions of renovation techniques shown in Figure 2 but outside the scope of this document see EN 13689 [1]. SIST EN 14408-1:2005



EN 14408-1:2004 (E) 9
Figure 2  Technique families for renovation of underground gas supply networks using plastics pipes within the scope of pipeline rehabilitation techniques. The technique families within the scope of this document are defined as follows: 3.2.1 lining with continuous pipes lining with pipe made continuous for the length of the section to be renovated prior to insertion, and which has not been shaped to give it a cross-sectional diameter smaller than its final diameter after installation SIST EN 14408-1:2005



EN 14408-1:2004 (E) 10 3.2.2 lining with close-fit pipes lining with a continuous pipe for which the cross-section is reduced to facilitate installation and reverted after installation to provide a close fit to the existing pipe NOTE For the reduction in cross-section there are two options as follows: a)
reduction in the pipe manufacturing plant; the pipe is usually supplied coiled on a reel from which it is directly inserted; b)
reduction on site: the pipe is usually fed through the reduction equipment and simultaneously inserted in one continuous string. 3.2.3 lining with cured-in-place pipes
lining with a flexible tube impregnated with a thermosetting resin which produces a pipe after resin cure 3.3
Geometrical definitions 3.3.1 nominal size numerical designation of the size of a component which is a convenient round number approximately equal to the manufacturing dimension in millimetres 3.3.2 nominal size DN/OD nominal size, related to the outside diameter 3.3.3 nominal outside diameter specified outside diameter, in millimetres, assigned to a nominal size DN-OD NOTE
The nominal outside diameter expressed in millimetres is the minimum mean outside diameter dem,min defined in 3.3.5. 3.3.4 mean outside diameter dn value of the measurement of the outer circumference of a pipe or spigot end of a fitting in any cross-section divided by π (≈ 3,142), and rounded to the next greater 0,1 mm 3.3.5 minimum mean outside diameter dem,min minimum value of the mean outside diameter as specified for a given nominal size 3.3.6 wall thickness e value of the measurement of the wall thickness at any point around the circumference of a component 3.3.7 mean wall thickness em arithmetic mean of a number of measurements of the wall thickness regularly spaced around the circumference and in the same cross-section of a component 3.3.8 nominal wall thickness en SIST EN 14408-1:2005



EN 14408-1:2004 (E) 11 numerical designation to the wall thickness, which is a convenient round number, approximately equal to the manufacturing dimension in millimetres NOTE For thermoplastics solid-wall components the value of nominal wall thickness, en , is identical to the specified minimum wall thickness at any point, emin. 3.3.9 standard dimension ratio (SDR) ratio of the nominal outside diameter, dn , and the nominal wall thickness, emin 3.3.10 internal pressure resistance
capability to withstand internal hydrostatic pressurisation 3.3.11 liner nominal outside diameter dn,l specified outside diameter in millimetres assigned to a liner. dn,L may be equal to dn NOTE For folded pipes, dn,L is the outside diameter after folding and reversion processes (i.e. : in "I" stage) 3.3.12 liner nominal wall thickness en,l specified wall thickness in millimetres assigned to a liner. en,L may be equal to en NOTE For folded pipes, en,L is the wall thickness after folding and reversion processes (i.e. : in "I" stage) 3.3.13 liner standard dimension ratio numerical designation of a liner series, which is a convenient round number, approximately equal to the dimension ratio of the liner nominal outside diameter, dn,L, en the liner nominal wall thickness, en,L 3.4
Materials definitions 3.4.1 virgin material material in a form such as granules, powder or liquid that has not been subjected to use or processing other than required for its manufacture, and to which no reprocessable or recyclable material has been added 3.4.2 own reprocessable material material prepared from rejected unused pipes and fittings, including trimmings from the production of pipes and fittings that will be reprocessed in a manufacturer's plant after having being previously processed by the same manufacturer by a process such as moulding or extrusion, and for which the complete formulation is known 3.4.3 external reprocessable material material from rejected unused products or trimmings that will be reprocessed and that were originally processed by another manufacturer NOTE
If a manufacturer has a production of products other than pipes and fittings, reprocessable material from that production is considered as external reprocessable material when used for pipes or fittings production. 3.4.4 recyclable material material prepared from used products which have been cleaned and crushed or ground SIST EN 14408-1:2005



EN 14408-1:2004 (E) 12 3.5 Definitions related to material characteristics No general definitions apply. 3.6 Definitions related to service conditions No general definitions apply. 3.7 Definitions related to joints No general definitions apply. 3.8
Definitions related to assessment of conformity 3.8.1 certification body impartial body, governmental or non-governmental, possessing the necessary competence and responsibility to carry out certification of conformity according to given rules of procedure and management 3.8.2 quality system organisational structure, responsibilities, procedures, processes and resources for implementing quality management 3.8.3 quality plan document setting out the specific quality practices, resources and sequence of activities relevant to a particular product or range of products 3.8.4 type testing testing performed to prove that the material, component, joint or assembly is capable of conforming to the requirements given in the applicable standard 3.8.5 preliminary type testing type testing carried out by or on behalf of the manufacturer 3.8.6 initial type testing type testing carried out by or on behalf of a certification body for certification purposes 3.8.7 batch release test test performed by the manufacturer on a batch of components, which has to be satisfactorily completed before the batch can be released 3.8.8 process verification test test performed by the manufacturer on materials, components, joints or assemblies at specific intervals to confirm that the process continues to be capable of producing components conforming to the requirements given in the applicable standard(s) NOTE
Within this document, process verification testing is used to demonstrate that installation has been conducted as required. SIST EN 14408-1:2005



EN 14408-1:2004 (E) 13 3.8.9 audit test test performed by or on behalf of a certification body to confirm that the material, component, joint or assembly continues to conform to the requirements given in the relevant standard and to provide information to assess the effectiveness of the quality system 3.8.10 indirect test test performed by the manufacturer different from that specified for a particular characteristic, having verified its correlation with the specified test 3.8.11 witness testing testing accepted by a certification body for initial type testing and/or audit testing, which is carried out by, or on behalf of, the manufacturer and supervised by a representative of the certification body, qualified in testing 3.8.12 batch clearly identifiable collection of units or product quantity, manufactured consecutively or continuously under the same conditions, using materials conforming to the same specification. 3.8.13 group collection of similar components from which samples are selected for testing purposes 3.8.14 assembly test piece consisting of various components 3.9
Symbols and abbreviations 3.9.1 Symbols dem : mean outside diameter dn : nominal outside diameter dn,L : liner nominal outside diameter e : wall thickness em
: mean wall thickness emin : minimum wall thickness
en : nominal wall thickness
en.L : liner nominal wall thickness 3.10
Abbreviations AT : audit test BRT : batch release test DN/OD : nominal size, related to the outside diameter IT : indirect test ITT : initial type test SIST EN 14408-1:2005



EN 14408-1:2004 (E) 14 "I"
: as installed "M" : as manufactured PTT : preliminary type test PVT : process verification test SDR : standard dimension ratio SDRL : liner standard dimension ratio TT : type testing 4 Pipes at the "M" stage NOTE For pipes at the "I" stage see Clause 7. 4.1 Materials The materials used for each technique family shall conform to
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