EN 14409-3:2004

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 z vodo - 3. del: Oblaganje s tesno prilagodljivimi cevmiKunststoff-Rohrleitungssysteme für die Renovierung erdverlegter Wasserversorgungsnetze - Teil 3: Close-Fit-LiningSystemes de canalisations plastiques pour la rénovation des réseaux enterrés pour l'alimentation en eau - Partie 3 : Tubage par tuyau continu sans espace annulairePlastics piping systems for renovation of underground water supply networks - Part 3: Lining with close fit-pipes93.025Zunanji sistemi za prevajanje vodeExternal water conveyance systems23.040.20Cevi iz polimernih materialovPlastics pipesICS:Ta slovenski standard je istoveten z:EN 14409-3:2004SIST EN 14409-3:2005en,fr,de01-januar-2005SIST EN 14409-3:2005SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 14409-3September 2004ICS 23.040.20; 23.040.45; 93.025English versionPlastics piping systems for renovation of underground watersupply networks - Part 3: Lining with close fit-pipesSystèmes de canalisations plastiques pour la rénovationdes réseaux enterrés pour l'alimentation en eau - Partie 3 :Tubage par tuyau continu sans espace annulaireKunststoff-Rohrleitungssysteme für die Renovierungerdverlegter Wasserversorgungsnetze - Teil 3: Close-Fit-LiningThis 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 14409-3:2004: ESIST EN 14409-3:2005

Guidance for assessment of conformity.17 Annex B (normative)
Factory folded heat reverted polyethylene (PE) pipe – Determination of memory ability.21 Annex C (informative)
Folded polyethylene (PE) pipe — Determination of resistance to circumferential tensile stress at constant temperature.23 Bibliography.27
— Plastics piping systems for renovation of underground water supply networks [this application]; — Plastics piping systems for renovation of underground gas supply networks; — Plastics Piping Systems for Renovation of underground pressure drainage and sewerage networks; — Plastics piping systems for renovation of industrial pipe systems. These system standards are distinguished from system standards for conventionally installed plastics piping systems by the requirement to verify certain characteristics in the as-installed condition, after site processing. This is in addition to verification of characteristics of plastics piping systems as manufactured. These system standards are complemented by the information contained in ISO/TR 11295 [6] and EN 13689 [1] (listed in the bibliography). The system standard EN 14409 comprises five parts, as follows:
— Part 1: General — Part 2: Lining with continuous pipes — Part 3: Lining with close-fit pipes (this document) — Part 4: Lining with cured-in-place pipes — Part 6: Lining with inserted hoses The requirements for any given renovation technique family are covered by Part 1: General, and are for use in conjunction with the relevant other part. For example, for the requirements relating to "Lining with close-fit pipes", it is necessary to refer to both parts 1 and 3. 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 14409 and the system standards for other applications. 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 14409-3:2005

Figure 1  Format of the renovation system standards SIST EN 14409-3:2005

EN 12201-5:2003, Plastics piping systems for water supply — Polyethylene (PE) — Part 5: Fitness for purpose of the system EN 14409-1, Plastics piping systems for renovation of underground water supply networks — Part 1: General
prEN ISO 3126, Plastics piping systems — Plastics components — Determination of dimensions (ISO 3126:2004) ISO 12176-1, Plastics pipes and fittings — Equipment for fusion jointing polyethylene systems — Part 1: Butt fusion.
ISO 12176-2, Plastics pipes and fittings — Equipment for fusion jointing polyethylene systems — Part 2: Electro fusion. 3 Terms, definitions, symbols and abbreviations For the purposes of this document, the terms, definitions, symbols and abbreviations given in EN 14409-1:2004, and the following apply. 3.1 General terms and definitions 3.1.1 close fit situation of the outside of the installed liner relative to the inside of the existing pipeline, which may either be an interference fit or include a small annular gap resulting from shrinkage and tolerances only. 3.1.2 close-fit pipe continuous lining pipe of thermoplastic material reshaped or otherwise expanded after insertion to achieve a close fit to the existing pipeline 3.2 Terms and definitions related to techniques No definitions apply. SIST EN 14409-3:2005

dem,min minimum value of the outside diameter as specified for a given nominal size 3.3.3 maximum mean outside diameter
dem,max maximum value of the outside diameter as specified for a given nominal size 3.3.4 out-of-roundness (ovality) difference between the measured maximum outside diameter and the measured minimum outside diameter in the same cross section of the pipe or spigot end of a fitting 3.3.5 nominal wall thickness
en numerical designation of the wall thickness of a component, which is a convenient round number, approximately equal to the manufacturing dimension in millimetres NOTE For thermoplastics components conforming to EN 12201, the value of the nominal wall thickness, en, is identical to the specified minimum wall thickness at any point, emin. 3.3.6 minimum wall thickness at any point
emin minimum value of the wall thickness at any point around the circumference of a component as specified 3.3.7 maximum mean wall thickness at any point
em,max maximum mean value of the wall thickness at any point around the circumference of a component as specified 3.3.8 tolerance permissible variation of the specified value of a quantity expressed as the difference between the permissible maximum and permissible minimum values 3.4
Material definitions 3.4.1 compound homogenous mixture of base polymer (PE) and additives, i.e. anti-oxidants, pigments, UV-stabilisers and others, at a dosage level necessary for the processing and use of components conforming to the requirements of this document SIST EN 14409-3:2005

Definitions related to material characteristics 3.5.1 lower confidence limit of the predicted hydrostatic strength at 20 °C for 50 years σLPL quantity with the dimensions of stress, expressed in megapascals (MPa), which can be considered as a property of the material, and represents the 97,5 % lower confidence limit of the mean predicted long-term hydrostatic strength for water at 20 °C for 50 years with internal water pressure 3.5.2 minimum required strength (MRS) value of 1LPL, rounded to the next lower value of the R10 series or of the R20 –series, depending on the value of 1LPL NOTE R10- and R20-series are the Renard number series conforming to ISO 3 [3] and ISO 497 [4].
3.5.3 overall service (design) coefficient
C overall coefficient with a value greater than one, which takes into consideration service conditions as well as properties of the components of a piping system other than those represented in the lower confidence limit NOTE The minimum overall design coefficient for water is 1,25. 3.5.4 design stress
σs allowable stress, in megapascals, for a given application.
It is derived by dividing the MRS it by the coefficient C, then rouding to the next lower value in the R20 series, i.e.: =CS[MRS]
σ 3.5.5 melt-mass flow rate (MFR) value relating to the viscosity of the molten material at a specified temperature and rate of shear, expressed in grams per 10 min (g/10 min) 3.6
Definitions related to service conditions 3.6.1 nominal pressure (PN) numerical designation used for reference purposes related to the mechanical characteristics of the component of a piping system. For plastic piping systems conveying water it corresponds to the maximum continuous operating pressure in bar, which can be sustained with water at 20 °C, based on the minimum design coefficient 3.6.2 maximum operating pressure (MOP) maximum effective pressure of the fluid in the piping system, expressed in bar, which is allowed in continuous use. It takes into account the physical and the mechanical characteristics of the components of a piping system NOTE It is calculated using the following equation: 1)-([SDR][MRS] 20 P][××=C SIST EN 14409-3:2005

Definitions related to joints 3.7.1 electrofusion joint joint between a PE electrofusion socket or saddle fitting and a pipe or a spigot end fitting. The electrofusion fittings are heated by the Joule effect of the heating element incorporated at their jointing surfaces, causing the material adjacent to them to melt and the pipe and fitting surfaces to fuse 3.7.2 butt fusion joint (using heated tool) joint made by heating the planed ends the surfaces of which match by holding them against a flat heating plate until the PE material reaches fusion temperature, removing the heating plate quickly and pushing the two softened ends against one another 3.7.3 mechanical joint joint made by assembling a PE pipe with a fitting that generally includes a compression part to provide for pressure integrity, leaktightness and resistance to end loads.
3.7.4 fusion compatibility ability of two similar or dissimilar polyethylene materials to be fused together to form a joint which conforms to the performance requirements of this document 3.8
Definitions related to assessment of conformity No definitions apply. 3.9 Symbols and abbreviations 3.9.1 Symbols For the purpose of this document, the symbols given in EN 14409-1:2004 apply, together with the following: C :
overall service (design) coefficient de :
outside diameter (at any point) dem :
mean outside diameter dem,max :
maximum mean outside diameter dem,min :
minimum mean outside diameter dmanuf :
the original circular diameter of the pipe (before folding) emax :
maximum wall thickness (at any point) T :
temperature at which stress rupture data have been determined t :
time to occurrence of a leak in the pipe ty :
wall thickness tolerance σLPL : quantity with the dimensions of stress, which represents the 97,5 % lower confidence
limit of the predicted hydrostatic strength at a temperature T and time t σs :
design stress 3.10 Abbreviations DN :
nominal size LPL :
lower confidence limit of the predicted hydrostatic strength MFR :
melt mass-flow rate SIST EN 14409-3:2005

maximum operating pressure MRS :
minimum required strength PE :
polyethylene R :
series of preferred numbers, conforming to the Renard series 4 Pipes at the “M” stage 4.1 Materials 4.1.1 Virgin material The virgin material used shall be one in accordance with the following designation of the PE compounds.
Designation Classification by MRS (MPa) PE 80 8 PE 100 10 The compound shall conform to EN 12201-1. 4.1.2 Reprocessable material and recyclable material Own reprocessable material may be used, provided that it is derived from the same compound, as used for the relevant production. External reprocessable material shall not be used. Recyclable material shall not be used. 4.2 General characteristics 4.2.1 Appearance When viewed without magnification, the internal and external surfaces of the pipe shall be smooth, clean and free from scoring, cavities and other defects which would prevent conformity to this document. 4.2.2 Colour The pipes shall be blue or black with blue identification stripes 4.3 Material characteristics The material from which the pipes are made shall conform to the requirements as specified in Table 1 of EN 12201-1:2003. 4.4 Geometric characteristics The pipe diameter, wall thickness and shape in the "M" stage depend on the specific close-fit lining technique. "M" stage dimensions needed to obtain "I" stage dimensions (see 7.4), shall be declared, with their tolerances, by the manufacturer. NOTE In the case of factory folded pipes variations in wall thickness in one cross-section can be present. This is acceptable as long as the folded pipe has the property to obtain a wall thickness in accordance with 7.4 during/after the reversion process.
Hydrostatic strength at 80 °C a No failure a Shall conform to Table 3 of
EN 12201-2:2003
b EN 921:1994 a In case the requirement is not met because of ductile failure mode, re-testing shall be done in accordance with 7.3 of EN 12201-2:2003. b The pipe shall be reverted in the case of factory-folded pipes.
4.6 Physical characteristics Physical characteristics shall conform to those specified in EN 12201-2. In the case of factory-folded heat-reverted pipes, the pipe shall additionally conform to the requirement for memory ability specified in Annex B. 4.7 Jointing Butt fusion joints shall conform to EN 12201-2 and EN 12201-5. Butt fusion joints shall not be made between folded pipes prior to reversion. NOTE The joining of circular pipes to form a string prior to site processing is considered as part of the “M”-stage.
4.8 Marking Pipes shall be marked in accordance with 4.8 of EN 14409-1:2004. NOTE In addition the PE pipe can be marked with the following optional information:
MFR
5 Fittings at the “M” stage Fittings shall conform to the requirement of EN 12201-3. NOTE 1 It is possible that some fittings conforming to EN 12201-3 are not compatible with the dimensional tolerances detailed in Table 2. NOTE 2
Interactive pressure pipe liners can rely on the use of technique-dependent, mechanical fittings for end connections and service connections. The mechanical fittings provide the connection between the liner, which is generally thin walled, and the rest of the pipeline system, by clamping the liner wall inside/outside. By means of a movable compression part, the fitting provides pressure integrity, leaktightness and resistance to end loads. The fitting generally includes a support sleeve either inserted into or assembled around the liner and can include also a grip ring. The mechanical fitting can be supplied for field assembly. 6 Valves Valves shall conform to the requirements of EN 12201-4. SIST EN 14409-3:2005

NOTE A feature of close fit pipe is that the lining may conform to the surface characteristics of the existing pipe. 7.3 Material characteristics There are no additional requirements for material characteristics. 7.4 Geometric characteristics Samples of pipes taken from actual or simulated installations, shall have wall thicknesses conforming to the requirements of Table 2, whereby relevant dimensions are to be measured according to prEN ISO 3126 at a temperature of (23 ± 2) °C. SIST EN 14409-3:2005

emin em,max emin em,max emin em,max emin em,max emin em,max 100 125 150 200 225
250 300 350 400
500 600 700 800
1000 1200 9,1 11,4 13,7 18,2 20,5
22,7 27,3 31,9
10,7 13,3 15,9 20,9 23,5
26,0 31,1 36,3 5,9 7,4 8,9 11,9 13,4
14,8 17,7 20,6 23,7
29,7
7,1 8,8 10,5 13,9 15,6
17,1 20,4 23,6 27,1
33,5 5,7 7,1 8,6 11,4 12,8
14,2 17,1 19,9 22,8
28,3 6,9 8,5 10,2 13,3 14,9
16,4 19,7 22,8 26,1
32,2
3,9 4,8 5,8 7,7 8,6
9,6 11,6 13,5 15,3
19,1 23,1
4,9 5,9 7,0 9,2 10,2
11,3 13,5 15,6 17,7
21,9 26,4
4,7 6,2 7,0
7,7 9,3 10,8 12,3
15,3 18,5 21,6 24,5
30,6 36,7
5,8 7,5 8,4
9,2 11,0 12,6 14,3
17,7 21,2 24,7 28,0
34,8 41,7 a Outside diameters and SDRs are examples, other sizes and SDRs are acceptable. b Wall thickness requirements calculated as, both rounded up to the next 0,1 mm:
emin
= dem,max / SDR ,
em,max = 1,12emin + 0,5 mm c Pipes with SDR values ≥ 33 may only be applied as interactive linings
7.5 Mechanical characteristics When tested in accordance with the methods given in Table 3 or Table 4, as applicable, pipes, taken from actual or simulated installations in accordance with 7.8, shall have mechanical characteristics conforming to the table. SIST EN 14409-3:2005

Parameters Value Test method Hydrostatic strength at 20 °C (100 h) No failure Stress for
PE 80
PE 100:
Test period
σ = 10 MPa σ = 12,4 MPa 100 h EN 921 Hydrostatic strength at 80 °C (1000 h) No failure Stress for
PE 80
PE 100:
Test period
σ = 4,0 MPa σ = 5,0 MPa 1000 h EN 921 a Where the test parameters cannot be met with a particular technique (e.g. limited product range, not including SDR11), the test parameters shall be re-calculated accordingly b
Where electro fusion saddles are offered as part of the lining system, the long term integrity of the saddle/reverted pipe-assembly shall be demonstrated in accordance with EN 12201-5
Table 4 — Mechanical characteristics of assembly Characteristic Requirement Test parameters
Test method Butt fusion joints
Hydrostatic internal pressure strength at 80 °C (165 h) Tensile strength Shall conform to EN 12201-5 Mechanical joints a, electrof
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