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BRITISH STANDARD
BS EN 13566-2:2005Plastics piping systems for renovation of underground non-pressure drainage and sewerage networks —
Part 2: Lining with continuous pipes
The European Standard EN 13566-2:2005 has the status of a British Standard
ICS 93.030
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BS EN 13566-2:2005
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This British Standard was published under the authority of the Standards Policy and Strategy Committee on 29 September 2006
© BSI 2006
ISBN 0 580 49119 6
National foreword
This British Standard was published by BSI. It is the UK implementation of EN 13566-2:2005.
The UK participation in its preparation was entrusted by Technical Committee PRI/88, Plastics piping systems, to Subcommittee PRI/88/3, Rehabilitation of pipe systems using plastics piping materials and components.
A list of organizations represented on PRI/88/3 can be obtained on request to its secretary.
This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.
Compliance with a British Standard cannot confer immunity from legal obligations.
Amendments issued since publication
Amd. No. Date Comments
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
EN 13566-2
November 2005
ICS 93.030
English Version
Plastics piping systems for renovation of underground non-pressure drainage and sewerage networks - Part 2: Lining with
continuous pipes
Systèmes de canalisations plastiques pour la rénovationdes réseaux d'assainissement enterrés sans pression -
Partie 2 : Tubage par tuyau continu avec espace annulaire
Kunststoff-Rohrleitungssysteme für die Renovierung vonerdverlegten drucklosen Entwässerungsnetzen
(Freispiegelleitungen) - Teil 2: Rohrstrang-Lining
This 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 STANDARDIZATIONC OM ITÉ EUR OP ÉEN DE NOR M ALIS AT IONEUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2005 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.
Ref. No. EN 13566-2:2005: E
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EN 13566-2:2005 (E)
2
Contents Page Foreword ........................................................................................................................................................3
Introduction....................................................................................................................................................5 1 Scope ......................................................................................................................................................6 2 Normative references.............................................................................................................................6 3 Terms and definitions, symbols and abbreviations ............................................................................7 3.1 Terms and definitions ............................................................................................................................7 3.2 Symbols and abbreviations ...................................................................................................................8 4 Pipes at the “M” stage ...........................................................................................................................9 4.1 Materials ...............................................................................................................................................9 4.2 General characteristics..........................................................................................................................9 4.3 Material characteristics..........................................................................................................................9 4.4 Geometrical characteristics .................................................................................................................11 4.5 Mechanical characteristics ..................................................................................................................12 4.6 Physical characteristics .......................................................................................................................14 4.7 Jointing................................................................................................................................................14 4.8 Marking ...............................................................................................................................................14 5 Fittings at the “M” stage......................................................................................................................14 5.1 Requirement for fittings .......................................................................................................................14 5.2 Marking ...............................................................................................................................................14 6 Ancillary components..........................................................................................................................14 7 Fitness for purpose of the system for pipes and fittings at the “I” stage........................................14 8 Installation practice..............................................................................................................................15 8.1 Preparatory work.................................................................................................................................15 8.2 Storage, handling and transport ..........................................................................................................15 8.3 Equipment...........................................................................................................................................15 8.4 Installation...........................................................................................................................................16 8.5 Process-related inspection and testing................................................................................................16 8.6 Lining termination................................................................................................................................16 8.7 Reconnecting to existing manholes and laterals..................................................................................17 8.8 Final inspection and testing.................................................................................................................17 Annex A (informative) Recommended scheme for assessment of conformity .....................................18 Annex B (normative) Structured-wall pipes used for continuous pipe lining - Specification of layers.................................................................................................................................23 Annex C (normative) Structured-wall pipes used for continuous pipe lining – Determination of residual elongation and leaktightness following application and removal of a specified longitudinal pulling force ............................................................................................................................24 Annex D (normative) Structured-wall pipes used for continuous pipe lining – Determination of resistance to application of a specified temporary longitudinal bending radius ...................................27 Bibliography.................................................................................................................................................30
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EN 13566-2:2005 (E)
3
Foreword
This document (EN 13566-2:2005) 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 May 2006, and conflicting national standards shall be withdrawn at the latest by November 2007.
This standard 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 (this application);
Plastics piping systems for renovation of underground water supply networks;
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”.
System standard EN 13566 comprises six parts, as follows:
Part 1: General
Part 2: Lining with continuous pipes (this standard)
Part 3: Lining with close-fit pipes
Part 4: Lining with cured-in-place pipes
Part 5: Lining with discrete pipes
Part 7: Lining with spirally wound pipes
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 13566 and system standards for other applications.
Annex A of this document is informative. Annexes B, C and D are normative.
This document includes a bibliography.
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.
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EN 13566-2:2005 (E)
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Figure 1 — Format of the renovation system standards. Lice
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EN 13566-2:2005 (E)
5
Introduction
The requirements for any given renovation technique family are covered by Part 1: General, used 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 [1] and a supporting standard, EN 13689 [2], listed in the bibliography.
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EN 13566-2:2005 (E)
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1 Scope
This Part 2 of EN 13566, read in conjunction with Part 1, specifies requirements and test methods for pipes and fittings which are part of plastics piping systems installed as continuous pipes in the renovation of non-pressure drainage and sewerage networks. It covers;
homogeneous-wall (HW) pipes made of polyethylene (PE) or polypropylene (PP),
structured-wall (SW) pipes of the corrugated double-wall type of construction as defined in Annex B,, whose structural layer(s) is (are) made of PE or PP,
jointing of pipe lengths by means of butt fusion (HW) 1) or electrofusion (SW),
fabricated and injection-moulded fittings made of PE, PP and poly(vinyl chloride) (PVC-U).
NOTE The grouting procedure is outside the scope of this standard.
2 Normative references
This Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are cited hereafter. For dated references, subsequent amendments to, or revisions of, any of these publications apply to this standard only when incorporated in it by amendment or revision. For undated references, the latest version of the publication referred to applies (including amendments).
EN 728, Plastics piping and ducting systems — Polyolefin pipes and fittings — Determination of oxidation induction time.
EN 744, Plastics piping and ducting systems — Thermoplastics pipes — Test method for resistance to external blows by the round-the-clock method.
EN 921:1994, Plastics piping systems — Thermoplastics pipes — Determination of resistance to internal pressure at constant temperature (with Corrigendum EN/AC 921:1995).
EN 1277:1996, Plastics piping systems — Thermoplastics piping systems for buried non-pressure applications — Test methods for leaktightness of elastomeric sealing ring type joints.
EN 1401-1, Plastics piping systems for non-pressure underground drainage and sewerage — Unplasticized poly(vinyl chloride) (PVC-U) — Part 1: Specifications for pipes, fittings and the system.
EN 1446, Plastics piping and ducting systems — Thermoplastics pipes — Determination of ring flexibility.
EN 1852-1, Plastic piping systems for non-pressure underground drainage and sewerage — Polypropylene (PP) — Part 1: Specifications for pipes, fittings and the system.
EN 12666-1, Plastics piping systems for non-pressure underground drainage and sewerage — Polyethylene (PE) — Part 1: Specifications for pipes, fittings and the system.
prEN 13476-1, Thermoplastics piping systems for non-pressure underground drainage and sewerage — Structured-wall piping systems of unplasticized poly(vinyl chloride) (PVC-U), polypropylene (PP) and polyethylene (PE) — Part 1: Specifications for pipes, fittings and the system.
1) Continuous pipes are extruded in single lengths, or are assembled by fusing individual pipe lengths at the site of installation.
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EN 13566-1:2002, Plastics piping systems for renovation of underground non-pressure drainage and sewerage networks — Part 1: General.
EN ISO 527-2, Plastics — Determination of tensile properties — Part 2: Test conditions for moulding and extrusion plastics (ISO 527-2:1993 including Corr 1:1994).
EN ISO 1133:1999, Plastics — Determination of the melt mass-flow rate (MFR) and the melt volume-flow rate (MVR) of thermoplastics (ISO 1133:1997).
EN ISO 3126, Plastics piping systems — Plastics components — Determination of dimensions (ISO 3126:2005).
EN ISO 6259-1, Thermoplastics pipes — Determination of tensile properties — Part 1: General test method (ISO 6259-1:1997).
EN ISO 9967, Thermoplastics pipes — Determination of creep ratio (ISO 9967:1994).
EN ISO 9969, Thermoplastics pipes — Determination of ring stiffness (ISO 9969:1994).
EN ISO 1183-1, Plastics — Methods for determining the density of non-cellular plastics — Part 1: Immersion method, liquid pyknometer method and titration method (ISO 1183-1:2004).
ISO 6259-3, Thermoplastics pipes — Determination of tensile properties — Part 3: Polyolefin pipes.
3 Terms and definitions, symbols and abbreviations
3.1 Terms and definitions
For the purposes of this European Standard the terms and definitions given in EN 13566-1:2002 and the following apply.
3.1.1 assembly section of continuous pipe including any joints and/or fittings
3.1.2 maximum system diameter diameter of the circle just circumscribing the system cross-section at its widest point
3.1.3 melt mass-flow rate value relating to the viscosity of the molten material at a specified temperature and rate of shear
3.1.4 minimum bending radius minimum bending radius at any point throughout the length of the pipe, measured to the longitudinal axis of the pipe
3.1.5 non-structural layer material layer of structured-wall (SW) pipe where the contribution of the layer to the ring stiffness is not essential to satisfy the relevant class requirement (see Annex B)
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3.1.6 structural layer material layer of SW pipe which is not defined as non-structural
3.1.7 structured-wall type of design of thermoplastic pipe or fitting which does not have a homogeneous wall of uniform thickness
3.1.8 out-of-roundness the difference between the measured maximum and the measured minimum outside diameter in the same cross-sectional plane of the pipe.
3.2 Symbols and abbreviations
3.2.1 Symbols
For the purposes of this standard the following symbols apply:
Fa maximum allowed pulling force
ec total wall thickness of structured-wall pipe
e5 inner wall thickness of structured-wall pipes, see Annex B
rmin. minimum bending radius
εe strain in the pipe wall due to longitudinal bending along its outer curvature
σy longitudinal tensile strength
3.2.2 Abbreviations
For the purposes of this standard the following abbreviations apply:
EPDM Ethylene-propylene-dimonomer
EVA Ethylene-vinyl-acetate
HW Homogeneous-wall
MFR Melt mass-flow rate
SEBS Styrene-ethylene-butadiene
SN ring stiffness
SW Structured-wall
TIR True impact rate
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4 Pipes at the “M” stage
4.1 Materials
4.1.1 HW pipes
Pipes shall be of PE or PP conforming to the requirements of EN 12666-1 or EN 1852-1.
4.1.2 SW pipes
4.1.2.1 General
The material for the structural layer(s) shall be PE or PP, to which may be added only those additives needed to facilitate the manufacture of pipes conforming to this standard.
The material for a non-structural inner layer shall be PE, or compounds of PE with EPDM, EVA or SEBS.
4.1.2.2 Virgin material
The use of virgin material, as defined in EN 13566-1:2002, is permitted without limitation.
4.1.2.3 Reprocessable material
The use of own reprocessable material, as defined in EN 13566-1:2002, is permitted without limitation.
The use of external reprocessable PE material, as defined in EN 13566-1:2002, in non-structural layers not in contact with the transported fluid shall be permitted without limitation.
External reprocessable material compounds of PE with EPDM, EVA or SEBS shall not be used.
External reprocessable material shall not be used in structural layers, or in non-structural layers in contact with the transported fluid.
4.1.2.4 Recyclable material
The use of recyclable PE and PP material, as defined in EN 13566-1:2002, in non-structural layers not in contact with the transported fluid shall be permitted without limitation. Recyclable material compounds of PE with EPDM, EVA or SEBS shall not be used. Recyclable material shall not be used in structural layers, or in non-structural layers in contact with the transported fluid.
4.2 General characteristics
When viewed without magnification the internal and external surfaces of pipes shall be smooth, clean and free from grooving, blistering, impurities and pores and any other surface irregularity likely to prevent their conformity to this standard. The pipe ends shall be cut square to the axis of the pipe.
4.3 Material characteristics
4.3.1 HW pipes
Material characteristics shall conform to the requirements of EN 12666-1:2005 or EN 1852-1.
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4.3.2 SW pipes
PE and PP materials from which structural layers are made shall conform to the requirements given in Table 1 and Table 2. Materials from which the non-structural layers are made shall conform to the requirements given in Table 3.
Table 1 — Material characteristics for PE in structural layers of SW pipes
Test parameters Characteristics Requirements Characteristic Value
Test method
Reference density ≥ 930 kg/m3 Temperature (23 ± 2) °C ISO 1183-1
Melt mass-flow rate ≤ 1,6 g/10 min Temperature Loading mass
190 °C 5 kg
EN ISO 1133:1999 Condition T
Resistance to internal pressure (solid wall test piece)
No failure during the test period
End caps Orientation Number of test pieces Temperature Circumferential stress Conditioning period Type of test Test period
Type a or b Free 3 80 °C 3,9 MPa Shall conform to EN 921:1994 Water-in-water 165 h
EN 921:1994
Resistance to internal pressure (solid wall specimen)
No failure during the test period
End caps Orientation Number of test pieces Temperature Circumferential stress Conditioning period Type of test Test period
Type a or b Free 3 80 °C 2,8 MPa Shall conform to EN 921:1994 Water-in-water 1000 h
EN 921:1994
Thermal stability, OIT ≥ 20 min Temperature 200 °C EN 728
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Table 2 — Material characteristics for PP in structural layers of SW pipes
Test parameters Characteristics Requirements
Characteristic Value Test method
Melt mass-flow rate ≤ 1,5 g/10 min Temperature Loading mass
230 °C 2,16 kg
EN ISO 1133:1999Condition M
Resistance to internal pressure (solid wall specimen)
No failure during the test period
End caps Orientation Number of test pieces Temperature Circumferential stress Conditioning period Type of test Test period
Type a or b Free 3 80 °C 4,2 MPa Shall conform to in EN 921:1994 Water-in-water 140 h
EN 921:1994
Resistance to internal pressure (solid wall specimen)
No failure during the test period
End caps Orientation Number of test pieces Temperature Circumferential stress Conditioning period Type of test Test period
Type a or b Free 3 95 °C 2,5 MPa Shall conform to in EN 921:1994 Water-in-water 1000 h
EN 921:1994
Thermal stability, OIT ≥ 8 min Temperature 200 °C EN 728
Table 3 — Material characteristics for non-structural layers of SW pipes
Characteristic Requirement Test parameters Test method Base material To be declared in accordance with 4.1.2.1
Elongation at break > 200 %,
but reduction < 50 %
Number of test pieces Temperature Aging time
5 80 °C 2000 h
EN ISO 6259-1 ISO 6259-3
Longitudinal tensile strength ≥ 4 MPa Speed Number of test pieces
10 mm/min 5
EN ISO 6259-1 ISO 6259-3
Longitudinal tensile E-modulus ≥ 20 MPa Number of test pieces Elongation Speed
5 5% 10 mm/min
EN ISO 527-2
4.4 Geometrical characteristics
4.4.1 HW pipes
Geometrical characteristics of HW-pipes shall conform to the requirements of EN 12666-1 or EN 1852-1 except that any nominal diameter shall be permitted.
4.4.2 SW pipes
All SW pipes shall be assigned nominal outside diameters dn by the manufacturer. Nominal outside diameters DN need not conform to standardised nominal sizes DN/OD or DN/ID. The geometrical characteristics of SW pipes shall conform to the requirements of Annex B and Table 4.
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Table 4 — Geometrical characteristics of SW pipes.
Dimensions in millimetres
Dimension Requirement Test method
dem,min ≥ dn
dem,max ≤ 1,02dn
Out-of-roundness a ≤ 0,035dn
e5,min b 1,0
e5,min c
for dn < 200 200 ≤ dn < 250 250 ≤ dn < 315 315 ≤ dn < 355 355 ≤ dn < 400
1,0 1,1 1,4 1,6 1,8
EN ISO 3126
a This requirement only applies to non-coiled pipes before storage. For coiled pipes the out-of-roundness shall not exceed any value agreed between the manufacturer and the customer.
b This requirement applies, when inner layer is non-structural (refer to Annex B) c This requirement applies, when inner layer is structural (refer to Annex B)
4.5 Mechanical characteristics
4.5.1 HW pipes
The mechanical characteristics of HW pipes shall conform to the requirements of EN 12666-1 or EN 1852-1.
4.5.2 SW pipes
The mechanical characteristics of SW pipes shall conform to the requirements specified in Table 5.
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Table 5 — Mechanical characteristics of SW pipes.
Characteristic Requirement Test parameters Test method Ring stiffness (SN) ≥ declared value,
chosen from either 4 kN/m2, 8 kN/m2 or 16 kN/m2
Shall conform to EN ISO 9969 EN ISO 9969
Creep ratio ≤ 4,0 at 2 years extrapolation
Shall conform to EN ISO 9967 EN ISO 9967
Ring flexibility a Deflection Length of test piece Position of test pieces
30% of dem Shall incorporate at least 5 reinforcement ribs Mould split line at 0°, 45° and 90° from the upper plate
EN 1446
Buckling stability b No signs of buckling No leakage
Pressure −0,3 bar Method 3 of EN 1277:1996, Condition A
Impact strength TIR < 10% Temperature Fall height Striker type and mass
0 °C 2,0 m Shall conform to Table 6
EN 744
Longitudinal pulling force
≥ declared value, not less than 1 kN
Temperature (23 ± 2) °C Annex C
Longitudinal bending radius
≤ declared value Temperature (23 ± 2) °C Annex D
a During the test, the conditions a) and b) shall be conformed to. After the test, the condition c) shall be conformed to. Condition a): The deflection force shall increase continuously. Condition b): The cross section of the test piece shall maintain a smooth curvature. Whilst flattening is allowed, reverse curvature shall not occur. Condition c): The test piece shall neither show delamination nor cracking. Crazing (stress whitening) shall not be deemed as a failure. b To simulate damage during insertion of the pipe, a slot about 1 mm wide shall be made on the top of two adjacent ribs.
Table 6 — Strikers for impact strength test of SW pipes.
Nominal outside diameter
mm
Striker type a Mass
kg
dn < 115
115 < dn < 150
150 < dn < 190
190 < dn < 240
240 < dn < 310
dn ≥ 310
d90
d90
d90
d90
d90
d90
0,5
0,8
1,6
2,0
2,5
3,2 a See EN 744 for the description of the types.
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4.6 Physical characteristics
No physical requirements apply.
4.7 Jointing
4.7.1 HW pipes
The joint characteristics for PE and PP pipes shall conform to the requirements of EN 12666-1:2005.
NOTE External debeading of HW pipes may also be required to comply with installation requirements.
4.7.2 SW pipes
For requirements for weld quality of joints, when assembled in accordance with the manufacturer’s manual, refer to Table 5, longitudinal pulling force and longitudinal bending radius.
4.8 Marking
All pipes shall be marked in accordance with EN 13566-1:2002. The pipe shall be marked at a maximum interval of 10 m, and at least once per pipe length.
5 Fittings at the “M” stage
5.1 Requirement for fittings
Fittings shall fulfil the requirements in one of the standards EN 1401-1, EN 1852-1, EN 12666-1:2005 or prEN 13476-1 except that any nominal diameter shall be permitted.
Measurements for SW fittings, shall conform to clause 4.4.2.
5.2 Marking
Each fitting shall be marked in accordance with EN 13566-1:2002.
6 Ancillary components
This standard does not cover any ancillary components.
7 Fitness for purpose of the system for pipes and fittings at the “I” stage
Pipes and fittings shall conform to the requirements of EN 13566-1:2002.
NOTE 1 For this system standard there are no additional requirements at the “I” stage because the products are the same as at the “M” stage.
NOTE 2 Out-of-roundness of the lining system after installation (including grouting of the annular space where applicable) should not exceed any maximum value specified by design or otherwise agreed between the customer and installer.
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8 Installation practice
8.1 Preparatory work
The preparatory work shall conform to EN 13566-1:2002.
NOTE Depending on the condition of the existing pipeline, it is possible that cleaning is necessary. Cleaning prior to insertion is important if the annular space is to be grouted.
8.2 Storage, handling and transport
Precautions shall be taken to ensure that no damage is caused to the lining pipe during unloading, site handling and storage. In this context, damage shall mean any scratch which is more than 10 % of the wall thickness in depth, or the imposition of any severe bending operation which results in a permanent kink, crease or fold.
NOTE The lining pipe should be stored on reasonably level ground, free of large sharp stones, debris or litter, to avoid potentially damaging point-loading.
In general and in the absence of any specific handling requirements, these precautions shall include the use of webbing slings in place of wire rope or chains, and the use of spreader beams for pipe lengths in excess of 12 m. Where the system designer specifies handling requirements, these shall prevail.
The lining pipe shall be transported on a flat bed vehicle free from nails or other projections or on a purpose-built trailer designed to carry the lining pipe as a freestanding coil or wound on to a drum. Before being loaded, the lining pipe shall be visually checked for any damage.
8.3 Equipment
8.3.1 Butt fusion equipment and debeading equipment
Butt fusion equipment shall be capable of producing joints under site conditions. In addition to the heater plate it shall include such clamping and trimming systems as will ensure alignment and matching of the pipe ends, and an external debeader able to remove the bead cleanly in one continuous strip without damage to the pipe surface. If an internal debeader is used, this shall not cause damage to the internal pipe surface.
NOTE A shelter should be provided to avoid weld contamination from water and dust, and to generally maintain a clean and warm working environment. Where temperatures lower than 10 °C are encountered, the ends of the lining pipe string should be plugged to prevent cold air blowing through which could otherwise adversely affect the weld.
8.3.2 Electrofusion equipment
Electrofusion equipment shall be capable of producing joints under site conditions. The power supply/controller and associated alignment and fixing clamps shall be such as to ensure satisfactory jointing when following the manufacturer’s guidelines for surface preparation and fusion.
NOTE The note in 8.3.1 also applies to electrofusion operations.
8.3.3 Pipe skids / rollers
Depending on the technique, pipe skids or rollers shall be used. These shall minimise frictional loads and prevent damage to the pipe as it is moved during the installation processes. At all changes of direction guide rollers should be used to limit the bending radius of the pipe to the minimum specified.
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8.3.4 Winching equipment
The winch equipment shall have a means of recording, graphically or numerically, the load applied to the winch cable during installation.
NOTE 1 All winching operations are potentially dangerous, and any exposed winch cable should be guarded. It is necessary in respect of winching equipment and operations to take account of all applicable national health and safety regulations.
NOTE 2 Winching equipment normally consists of a powered winch connected to the lining pipe by a winch cable and appropriate nose cone connection. The force in the winch cable should be measured directly, and not inferred from the hydraulic pressure on the drive motors or by other such indirect means.
8.3.5 Pipe entry guides
Guides should be used on the ends of the host pipe to prevent damage to the lining pipe during insertion.
8.4 Installation
Installation shall follow the procedures detailed in the installation manual.
The installation manual shall describe the method of installation, including liner termination and reconnection to existing manholes and laterals, inspection and testing, and shall specify all necessary parameters according to the requirements of the method described including:
a) Maximum permitted pulling force;
NOTE 1 In order to avoid damage to the lining pipe caused for instance by a tight fit occurring in part of the host pipe, the maximum permitted pulling force should be related to the anticipated installation friction rather than the maximum permissible stress for the lining pipe material.
b) Minimum bending radius during and after installation;
The manual shall also include details of the type of fittings to be used.
NOTE 2 Where pipes are jointed to form one pipe string on site using butt-fusion, the method of external debeading should be specified, and a detailed description given of at least:
1) how the bead is removed; 2) how the bead and related joint are identified; 3) how the bead should be examined for quality control purposes, and stored for future reference;
NOTE 3 Where pipes are expanded to fit an electrofusion joint, internal support should be provided in the form of a rigid insert to maintain the melt pressure during fusion
8.5 Process-related inspection and testing
Process-related inspection and testing shall conform to EN 13566-1:2002.
NOTE For this system standard there are no additional requirements at the “I” stage because the products are the same as at the “M” stage.
8.6 Lining termination
The ends of the lining pipe shall be anchored and sealed in such a way as to provide a watertight connection to the existing pipeline. The method of anchoring the pipe ends shall be capable of resisting without failure any longitudinal forces such as thermal stresses that may occur in service.
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8.7 Reconnecting to existing manholes and laterals
Reconnecting shall conform to EN 13566-1:2002.
8.8 Final inspection and testing
The finished lining pipe shall be inspected internally to verify that it is continuous over the entire length of the installation.
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Annex A (informative)
Recommended scheme for assessment of conformity
A.1 Scope
The following text, read in conjunction with Annex A of EN 13566-1:2002, provides a recommended scheme for assessment of conformity of pipes, fittings and the installed lining system.
A.2 General
Homogeneous wall (HW) pipes and fittings used for continuous pipe lining should preferably be assessed in accordance with the recommendations of prCEN/TS 12666-2 or ENV 1852-2, as applicable.
Materials, components, joints and assemblies of structured wall (SW) pipes used for continuous pipe lining should preferably be sampled and tested with the minimum frequencies given in this annex, in order to prove conformity to the requirements of clauses 4, 5 and 7.
If not otherwise stated by the test method, pipe samples should have a minimum length of 1 m, and should preferably be taken from different pipes.
A.3 Testing and inspection
A.3.1 Grouping for testing
For the purpose of this standard the following grouping applies.
Size groups:
1: dn ≤ 200 mm
2: 200 mm < dn ≤ 500 mm
3: dn > 500 mm
Fittings groups:
1: Bends
2: Branches
3: Other
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A.3.2 Initial type testing (ITT)
The manufacturer shall prove that the product conforms to the corresponding requirements specified in one of the Tables A.1, A.2 or A.3. At change of material all tests in the relevant table except dimensions shall be performed.
Table A.1 — ITT requirements for SW pipes
Characteristics Refer to clause Minimum testing frequency
Melt mass-flow rate 4.3.2, Table 1,2 Once / material
Density 4.3.2, Table 1,2 Once / material
Resistance to internal pressure
4.3.2, Table 1,2 Once / material
Thermal stability, OIT 4.3.2, Table 1,2 Once / material
Appearance --- Once / dn
Colour --- Once / dn
Dimensions 4.4.2, Table 4 Once /dn
Ring stiffness 4.5.2, Table 5 Once / dn
Creep ratio 4.5.2, Table 5 Once / material
Ring flexibility 4.5.2, Table 5 Once / dn
Buckling stability 4.5.2, Table 5 Once / dn
Impact strength 4.5.2, Table 5 Once / dn
Longitudinal pulling force 4.5.2, Table 5 Once / dn / material
Longitudinal bending radius 4.5.2, Table 5 Once / dn / material
Marking 4.8 Once / dn
Table A.2 — ITT requirements for SW pipe material in non-structural layers
Characteristics Refer to clause
Minimum testing frequency
Elongation at break
Longitudinal tensile strength
Longitudinal tensile E-modulus
4.3.2, Table 3 Once / material
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Table A.3 — ITT requirements for fittings
Characteristics Refer to clause Minimum sampling
dem,min
dem,max
emin
4.4.2, Table 4 Once / dn / fitting group
In addition fittings shall fulfil the ITT requirements for one of the standards EN 1401-1, EN 1852-1, EN 12666-1 or prEN 13476-1.
A.3.3 Product quality control
A.3.3.1 Batch release testing (BRT)
The characteristics specified in clauses 4 to 7, and listed in Tables A.4 and A.5 should be batch release tested with the frequency given in those tables.
The tests should preferably be carried out for each start up of the production.
Table A.4 — BRT requirements for SW pipes
Characteristics Refer to clause Minimum testing frequency
Appearance --- Once / 8 h
Colour --- Once / 8 h
Dimensions 4.4.2, Table 4 Once / 8 h
Ring stiffness 4.5.2, Table 5 At start-up
Marking 4.8 Once / 8 h
Table A.5 — BRT requirements for fittings
Characteristics Refer to clause Minimum testing frequency
dem,min
dem,max
emin
4.4.2, Table 4 Once / 8 h
In addition fittings shall fulfil the BRT requirements for one of the standards EN 1401-1, EN 1852-1, EN 12666-1 or prEN 13476-1.
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A.3.3.2 Audit tests (AT)
The characteristics specified in Clauses 4 to 7 and listed in Tables A.6 to A.8 shall be audit tested with the frequency given in those tables.
Table A.6 — AT requirements for SW pipes
Characteristics Refer to clause Minimum testing frequency
Melt mass-flow rate 4.3.2, Table 1,2 Once / year / material
Density 4.3.2, Table 1,2 Once / year / material
Resistance to internal pressure 4.3.2, Table 1,2 Once / year / material
Thermal stability, OIT 4.3.2, Table 1,2 Once / year / material
Appearance --- Once / year / size group
Colour --- Once / year / size group
Dimensions 4.4.2, Table 4 Once / year / size group
Ring stiffness 4.5.2, Table 5 Once / year / size group
Creep ratio 4.5.2, Table 5 Once / year / size group
Ring flexibility 4.5.2, Table 5 Once / year / size group
Buckling stability 4.5.2, Table 5 Once / year / size group
Impact strength 4.5.2, Table 5 Once / year / size group
Longitudinal pulling force 4.5.2, Table 5 Once / year / size group
Longitudinal bending radius 4.5.2, Table 5 Once / year / size group
Marking 4.8 Once / year / size group
Table A.7 — AT requirements for SW pipe materials in non-structural layers
Characteristics Refer to clause
Minimum testing frequency
Elongation at break
Longitudinal tensile strength
Longitudinal tensile E--modulus
4.3.2, Table 3 Once/year/material
Table A.8 — AT requirements for fittings
Characteristics Refer to clause Minimum testing frequency
dem,min
dem,max
emin
4.4.2, Table 4 Once / year / fitting group / size group
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In addition fittings shall fulfil the AT requirements given in EN 1401-1, EN 1852-1, EN 12666-1:2005 or prEN 13476-1, as applicable.
A.3.4 Inspection and test records
Inspection and test records shall conform to EN 13566-1:2002.
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Annex B (normative)
Structured-wall pipes used for continuous pipe lining -
Specification of layers
As indicated in the scope, structured-wall pipe of corrugated double-wall construction , as illustrated in figure B.1, is the only type covered by this standard.
The outer layer shall always be regarded as structural. The inner layer may be regarded as non-structural, if a sample pipe, manufactured without any inner layer, is determined in accordance with EN ISO 9969 to have a ring stiffness equal to or higher than the value declared for the pipe as a whole (see 4.5.2, Table 4).
For this type of construction, Figure B.1 defines the wall thickness e5, referred to in 4.4.2.
Figure B.1 — Structured-wall pipe, corrugated wall construction.
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Annex C (normative)
Structured-wall pipes used for continuous pipe lining – Determination of residual elongation and leaktightness following application and removal
of a specified longitudinal pulling force
C.1 General
This Annex describes a test method to be used to determine whether a pipe can be subjected to a specified pulling force without damage or loss of leaktightness.
C.2 Principle
The maximum tensile force to be applied is specified prior to testing. A pipe sample including a joint is subjected to longitudinal tension to the specified extent by means of a tensile testing machine. The pipe sample is then relaxed and the residual elongation is noted. The tested pipe sample is then subjected to an internal hydrostatic pressure test during which the leaktightness of the joint is verified.
C.3 Apparatus
C.3.1 Tensile testing machine, capable of pulling the pipe at a steady rate with a permitted deviation of ±5 mm/min.
C.3.2 Length measuring device, capable of measuring the test piece with a permitted deviation of ±1 mm.
C.3.3 Grips, capable of holding the test piece firmly in place, and of transmitting the load evenly around the circumference of the test piece
NOTE At least one proven design of such grips for each product should preferably be documented by the manufacturer.
C.4 Test piece
C.4.1 The test piece shall comprise a pipe with a minimum free length, LF, of 3dn, fabricated from two pipe sections of equal length, jointed together by the specified method of fusion.
C.4.2 The number of test pieces shall be 3.
C.5 Conditioning
Prior to testing the test piece shall be conditioned for a period of 24 h at a temperature of (23 ± 5) °C. If the pipe has an emin < 10 mm the conditioning time may be reduced to 12 h. The test shall be carried out at a temperature of (23 ± 5) °C. Li
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C.6 Testing
Attach the pipe sample to the tensile testing machine in such a way that the pulling force is transmitted evenly throughout the circumference at each end of the pipe sample. Mark the measuring length of the pipe sample. The measuring length shall be chosen so that the test results are not affected by the holding grips. Apply a force parallel to the axis of the pipe at a speed of 25 mm/min. Continue the test until the desired force is reached, at which time the force is no longer increased, but kept constant for a period of 1 min. Release the force and allow the pipe to relax for a period of 24 h.
After the relaxation period, carry out an internal hydrostatic pressure test in accordance with Method 2 of EN 1277:1996, on the test piece.
Key 1 Tensile testing machine 2 Pipe sample including joint 3 Fusion joint 4 Free length, LF ≥ 3dn
Figure C.1 — Longitudinal pulling force test principle.
C.7 Evaluation
After relaxation, when the length of the pipe is measured, the residual elongation shall not exceed 2 % of the initial length of the pipe sample. No leakage shall occur during the internal pressure test.
C.8 Test report
The test report shall include the following information:
a) a reference to this annex of this standard;
b) the identity of the components tested;
c) the size and length of the pipe sample;
d) the design of grips used to transmit the load evenly around the circumference of the test piece;
e) the ambient temperature, in degrees Celsius (°C);
f) the elongation speed, in millimetres per second (mm/min);
g) the maximum elongation, in millimetres (mm);
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h) the pulling force which was kept constant for 1 min in Newton;
i) the relaxation period, in hours (h);
j) the residual elongation, in millimetres (mm);
k) any changes in the appearance of the test piece during the test, or immediately afterwards;
l) the test pressure, in bars;
m) the length of time under pressure, in minutes (min);
n) if any, a report of signs of leakage or rupture, their position(s) and the pressure at which they occurred, or otherwise a statement that the joint did not leak;
o) any factors which may have affected the results, such as any incidents or any operating details not specified in this standard.
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Annex D (normative)
Structured-wall pipes used for continuous pipe lining – Determination of resistance to application of a specified temporary longitudinal bending
radius
D.1 General
This Annex describes a test to be used to determine whether a pipe can be subjected to a specified bending without damage or loss of leaktightness.
D.2 Principle
A pipe sample including a joint is deformed by means of a semi-circular loading element with a chosen curvature for a specific period of time, during which the appearance of the pipe is inspected visually. The tested pipe sample is then subjected to an internal hydrostatic pressure test during which the leaktightness of the joint is verified.
D.3 Apparatus
The apparatus shall comprise a compression testing machine, with a semi-circular loading element attached as shown in Figure D.1. It shall be able to push the loading element at a steady rate, with permitted deviations of ± 10 mm/min.
The loading element shall be curved according to the minimum bending radius for which the pipe is desired to be tested.
The pipe sample is placed without fixation on two supports, placed at a distance of 7dn from each other.
D.4 Test piece
D.4.1 A test piece with a minimum length of 8dn shall be used. The pipe ends shall be cut square to the axis of the pipe. Each test piece shall be fabricated from two samples of equal length, jointed together by the specified method of fusion.
D.4.2 The number of test pieces shall be 3.
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Key 1 Compression testing machine 2 Semi-circular loading element 3 Welded joint 4 Pipe sample including joint 5 Pipe sample support
Figure D.1 — Pipe bending radius test assembly
D.5 Conditioning
Prior to testing the test piece shall be conditioned for a period of 24 h at a temperature of (23 ± 5) °C. If the pipe has an emin < 10 mm the conditioning time may be reduced to 12 h. The test shall be carried out at a temperature of (23 ± 5) °C.
D.6 Testing
Apply a force to the loading element in a direction perpendicular to the axis of the pipe at a speed of 500 mm/min. Continue the test until the pipe ends are at a 90° angle to each other. Then discontinue the movement of the loading element. Hold the pipe in this position for a period of 1 min to allow relaxation of stresses.
After the relaxation period, release the sample pipe and carry out an internal hydrostatic pressure test in accordance with Method 2 of EN 1277:1996.
D.7 Evaluation
No buckling of the pipe shall occur during the test. The part of the pipe that comes into contact with the bending element shall remain in contact with the bending element over its entire length during the bending and relaxation periods. If the pipe has a multi-layered structure, the integrity between the layers shall be retained. No leakage shall occur during the internal pressure test.
D.8 Test report
The test report shall include the following information;
a) a reference to this annex of this standard;
b) the identity of the components tested;
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c) the ambient temperature, in degrees Celsius (°C);
d) the radius of the semi-circular loading element;
e) the deflection speed, in millimetres per second (mm/min);
f) any changes in the appearance of the test pieces during the test, or immediately afterwards;
g) the test pressure, in megapascals, MPa;
h) the length of time under pressure, in minutes (min);
i) if any, a report of signs of leakage or rupture, their position(s) and the pressure at which they occurred, or otherwise a statement that the joint did not leak;
j) any factors which may have affected the results, such as any incidents or any operating details not specified in this standard.
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Bibliography
[1] ISO/TR 11295, Techniques for rehabilitation of pipeline systems by the use of plastics pipes and fittings.
[2] EN 13689, Guidance on the classification and design of plastics piping systems used for renovation.
[3] prCEN/TS 12666-2, Plastics piping systems for non-pressure underground drainage and sewerage - Polyethylene (PE) - Part 2: Guidance for the assessment of conformity.
[4] ENV 1852-2, Plastics piping systems for non-pressure underground drainage and sewerage - Polypropylene (PP) — Part 2: Guidance for the assessment of conformity.
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Orders for all BSI, international and foreign standards publications should be addressed to Customer Services. Tel: +44 (0)20 8996 9001. Fax: +44 (0)20 8996 7001. Email: [email protected]. Standards are also available from the BSI website at http://www.bsi-global.com.
In response to orders for international standards, it is BSI policy to supply the BSI implementation of those that have been published as British Standards, unless otherwise requested.
Information on standards
BSI provides a wide range of information on national, European and international standards through its Library and its Technical Help to Exporters Service. Various BSI electronic information services are also available which give details on all its products and services. Contact the Information Centre. Tel: +44 (0)20 8996 7111. Fax: +44 (0)20 8996 7048. Email: [email protected].
Subscribing members of BSI are kept up to date with standards developments and receive substantial discounts on the purchase price of standards. For details of these and other benefits contact Membership Administration. Tel: +44 (0)20 8996 7002. Fax: +44 (0)20 8996 7001. Email: [email protected].
Information regarding online access to British Standards via British Standards Online can be found at http://www.bsi-global.com/bsonline.
Further information about BSI is available on the BSI website at http://www.bsi-global.com.
Copyright
Copyright subsists in all BSI publications. BSI also holds the copyright, in the UK, of the publications of the international standardization bodies. Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a retrieval system or transmitted in any form or by any means – electronic, photocopying, recording or otherwise – without prior written permission from BSI.
This does not preclude the free use, in the course of implementing the standard, of necessary details such as symbols, and size, type or grade designations. If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained.
Details and advice can be obtained from the Copyright & Licensing Manager. Tel: +44 (0)20 8996 7070. Fax: +44 (0)20 8996 7553. Email: [email protected].
