Plastics piping systems for renovation of underground drainage and sewerage networks under pressure - Part 3: Lining with close-fit pipes (ISO 11297-3:2018)

This document, in conjunction with ISO 11297‑1, specifies requirements and test methods for close-fit lining systems intended to be used for the renovation of underground drainage and sewerage networks under pressure.
It applies to pipes and fittings, as manufactured, as well as to the installed lining system. It is applicable to polyethylene (PE) pipes of either solid wall single layer or co-extruded layer construction, which is reduced in the factory or on site to provide a close-fitting independent or interactive pressure pipe liner, as well as associated fittings and joints for the construction of the lining system. It is not applicable to PE coated pipes having a peelable, contiguous, thermoplastic additional layer on the outside of the pipe.
It is applicable to PE pipes, fittings and assemblies intended to be used at an operating temperature of 20 °C as the reference temperature.
NOTE For applications operating at constant temperatures greater than 20 °C and up to 40 °C, see ISO 4427‑1:2007, Annex A.

Kunststoff-Rohrleitungssysteme für die Renovierung von erdverlegten Abwasserdruckleitungen - Teil 3: Close-Fit-Lining (ISO 11297-3:2018)

Dieses Dokument legt in Verbindung mit ISO 11297-1 Anforderungen und Prüfverfahren für Close-Fit-Lining-Systeme fest, die zur Renovierung von erdverlegten Abwasserdruckleitungen vorgesehen sind.
Es gilt sowohl für Rohre und Formstücke, wie hergestellt, als auch für das eingebaute Lining-System. Es gilt für Rohre aus Polyethylen (PE), die entweder als Einschicht-Vollwandrohre oder als koextrudierte Mehrschichtrohre ausgeführt sind, die werkseitig oder auf der Baustelle reduziert werden, um einen eng anliegenden, unabhängigen oder interaktiven Druckrohr-Liner zu erhalten, sowie für zugehörige Formstücke und Verbindungen für den Aufbau des Lining-Systems. Es gilt nicht für PE-beschichtete Rohre mit einer abziehbaren, angrenzenden, thermoplastischen Zusatzschicht auf der Außenseite.
Dieses Dokument ist anwendbar auf PE-Rohre, Formstücke und Baugruppen, die zur Verwendung bei einer Betriebstemperatur von 20 °C als Bezugstemperatur vorgesehen sind.
ANMERKUNG Bei Anwendungen, die mit einer konstanten Temperaturen von mehr als 20 °C und bis zu 40 °C betrieben werden, siehe ISO 4427-1:2007, Anhang A.

Systèmes de canalisations en plastique pour la rénovation des réseaux de branchements et de collecteurs d'assainissement enterrés sous pression - Partie 3: Tubage par tuyau continu sans espace annulaire (ISO 11297-3:2018)

Le présent document, conjointement à l'ISO 11297‑1, spécifie les exigences et les méthodes d'essai pour les systèmes de tubage par tuyau continu sans espace annulaire utilisés pour la rénovation des réseaux de branchements et de collecteurs d'assainissement enterrés sous pression.
Il s'applique aux tuyaux et raccords, tels que fabriqués, ainsi qu'au système de rénovation installé. Il s'applique aux tuyaux en polyéthylène (PE) ayant soit une construction monocouche à paroi compacte soit une construction à couches coextrudées, laquelle est réduite en usine ou sur site pour fournir un tubage autostructurant et un tubage nécessitant le maintien de l'enveloppe sans espace annulaire, ainsi qu'aux raccords associés et aux assemblages pour la construction du système de rénovation. Il ne s'applique pas aux tuyaux revêtus de PE comportant une couche thermoplastique supplémentaire pelable et contiguë à l'extérieur du tuyau.
Il s'applique aux tuyaux, raccords et montages en PE destinés à être utilisés à une température de fonctionnement de 20 °C, qui est la température de référence.
NOTE Pour les applications à des températures constantes comprises entre 20 °C et 40 °C, voir l'ISO 4427‑1:2007, Annexe A.

Cevni sistemi iz polimernih materialov za obnovo podzemnih omrežij za odvodnjavanje in kanalizacijo pod tlakom - 3. del: Oblaganje s tesno prilagodljivimi cevmi (ISO 11297-3:2018)

Ta dokument v povezavi s standardom ISO 11297-1 določa zahteve in preskusne metode za tesno prilagodljive sisteme cevi, ki se uporabljajo za obnovo podzemnih omrežij za odvodnjavanje in kanalizacijo pod tlakom.
Uporablja se za cevi in fitinge, kot so izdelani, ter za nameščene sisteme cevi. Uporablja se za polietilenske (PE) cevi s trdno steno iz ene plasti ali s konstrukcijo koekstrudiranih slojev, ki se v tovarni ali na mestu uporabe zmanjša, da se zagotovi tesno prilegajoča se neodvisna ali interaktivna obloga cevi pod tlakom, ter tudi za povezane fitinge in spoje za konstrukcijo sistema cevi. Ne uporablja se za cevi, prevlečene s polietilenom, ki imajo na zunanji strani stični, termoplastični dodatni sloj, ki ga je mogoče odluščiti. Uporablja se za polietilenske cevi, fitinge in sestave, namenjene za uporabo pri delovni temperaturi 20 °C kot referenčni temperaturi.
OPOMBA: V zvezi z napravami, ki delujejo pri stalnih temperaturah od 20 do 40 °C, glej dodatek A k standardu ISO 4427-1:2007.

General Information

Status
Published
Publication Date
09-Oct-2018
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
10-Oct-2018
Completion Date
10-Oct-2018

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SLOVENSKI STANDARD
SIST EN ISO 11297-3:2018
01-december-2018
1DGRPHãþD
SIST EN ISO 11297-3:2013
Cevni sistemi iz polimernih materialov za obnovo podzemnih omrežij za

odvodnjavanje in kanalizacijo pod tlakom - 3. del: Oblaganje s tesno prilagodljivimi

cevmi (ISO 11297-3:2018)

Plastics piping systems for renovation of underground drainage and sewerage networks

under pressure - Part 3: Lining with close-fit pipes (ISO 11297-3:2018)
Kunststoff-Rohrleitungssysteme für die Renovierung von erdverlegten
Abwasserdruckleitungen - Teil 3: Close-Fit-Lining (ISO 11297-3:2018)
Systèmes de canalisations en plastique pour la rénovation des réseaux de

branchements et de collecteurs d'assainissement enterrés sous pression - Partie 3:

Tubage par tuyau continu sans espace annulaire (ISO 11297-3:2018)
Ta slovenski standard je istoveten z: EN ISO 11297-3:2018
ICS:
23.040.05 Cevovodi za zunanje Pipeline and its parts for
sisteme za odpadno vodo in external sewage systems
njihovi deli
91.140.80 Drenažni sistemi Drainage systems
93.030 Zunanji sistemi za odpadno External sewage systems
vodo
SIST EN ISO 11297-3:2018 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN ISO 11297-3:2018
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SIST EN ISO 11297-3:2018
EN ISO 11297-3
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2018
EUROPÄISCHE NORM
ICS 23.040.20; 23.040.45; 91.140.80; 93.030 Supersedes EN ISO 11297-3:2013
English Version
Plastics piping systems for renovation of underground
drainage and sewerage networks under pressure - Part 3:
Lining with close-fit pipes (ISO 11297-3:2018)

Systèmes de canalisations en plastique pour la Kunststoff-Rohrleitungssysteme für die Renovierung

rénovation des réseaux de branchements et de von erdverlegten Abwasserdruckleitungen - Teil 3:

collecteurs d'assainissement enterrés sous pression - Close-Fit-Lining (ISO 11297-3:2018)

Partie 3: Tubage par tuyau continu sans espace
annulaire (ISO 11297-3:2018)
This European Standard was approved by CEN on 26 August 2018.

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 CEN-CENELEC 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 CEN-CENELEC Management

Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 11297-3:2018 E

worldwide for CEN national Members.
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SIST EN ISO 11297-3:2018
EN ISO 11297-3:2018 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

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SIST EN ISO 11297-3:2018
EN ISO 11297-3:2018 (E)
European foreword

This document (EN ISO 11297-3:2018) has been prepared by Technical Committee ISO/TC 138

"Plastics pipes, fittings and valves for the transport of fluids" in collaboration with 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 April 2019, and conflicting national standards shall be

withdrawn at the latest by April 2019.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

This document supersedes EN ISO 11297-3:2013.

According to the CEN-CENELEC Internal Regulations, the national standards organizations of the

following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,

Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,

France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,

Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
Endorsement notice

The text of ISO 11297-3:2018 has been approved by CEN as EN ISO 11297-3:2018 without any

modification.
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SIST EN ISO 11297-3:2018
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SIST EN ISO 11297-3:2018
INTERNATIONAL ISO
STANDARD 11297-3
Second edition
2018-09
Plastics piping systems for renovation
of underground drainage and
sewerage networks under pressure —
Part 3:
Lining with close-fit pipes
Systèmes de canalisations en plastique pour la rénovation des réseaux
de branchements et de collecteurs d'assainissement enterrés sous
pression —
Partie 3: Tubage par tuyau continu sans espace annulaire
Reference number
ISO 11297-3:2018(E)
ISO 2018
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SIST EN ISO 11297-3:2018
ISO 11297-3:2018(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2018

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting

on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address

below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2018 – All rights reserved
---------------------- Page: 8 ----------------------
SIST EN ISO 11297-3:2018
ISO 11297-3:2018(E)
Contents Page

Foreword ..........................................................................................................................................................................................................................................v

Introduction ................................................................................................................................................................................................................................vi

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 2

3.1 General ........................................................................................................................................................................................................... 2

3.2 Techniques .................................................................................................................................................................................................. 3

3.3 Characteristics ......................................................................................................................................................................................... 3

3.4 Materials ....................................................................................................................................................................................................... 3

3.5 Product stages ......................................................................................................................................................................................... 3

3.6 Service conditions ................................................................................................................................................................................ 3

3.7 Joints ................................................................................................................................................................................................................ 4

4 Symbols and abbreviated terms ........................................................................................................................................................... 4

4.1 Symbols ......................................................................................................................................................................................................... 4

4.2 Abbreviated terms ............................................................................................................................................................................... 5

5 Pipes at the “M” stage ...................................................................................................................................................................................... 5

5.1 Materials ....................................................................................................................................................................................................... 5

5.1.1 Virgin material ................................................................................................................................................................... 5

5.1.2 Reprocessable and recyclable material ........................................................................................................ 5

5.2 General characteristics ..................................................................................................................................................................... 5

5.2.1 Appearance ........................................................................................................................................................................... 5

5.2.2 Colour ........................................................................................................................................................................................ 5

5.3 Material characteristics ................................................................................................................................................................... 6

5.4 Geometric characteristics .............................................................................................................................................................. 6

5.5 Mechanical characteristics............................................................................................................................................................ 6

5.6 Physical characteristics ................................................................................................................................................................... 6

5.7 Jointing ........................................................................................................................................................................................................... 6

5.8 Marking ......................................................................................................................................................................................................... 6

5.9 Regional requirements for pipes ............................................................................................................................................. 7

6 Fittings at the “M” stage ................................................................................................................................................................................. 7

6.1 Requirements ........................................................................................................................................................................................... 7

6.2 Marking ......................................................................................................................................................................................................... 7

6.3 Regional requirements for fittings ......................................................................................................................................... 7

7 Ancillary components ..................................................................................................................................................................................... 7

8 Fitness for purpose of the installed lining system at the “I” stage ....................................................................7

8.1 Materials ....................................................................................................................................................................................................... 7

8.2 General characteristics ..................................................................................................................................................................... 7

8.3 Material characteristics ................................................................................................................................................................... 7

8.4 Geometric characteristics .............................................................................................................................................................. 8

8.5 Mechanical characteristics............................................................................................................................................................ 8

8.6 Physical characteristics ................................................................................................................................................................... 9

8.7 Additional characteristics .............................................................................................................................................................. 9

8.8 Sampling ....................................................................................................................................................................................................10

8.9 Regional requirements for the installed lining system .....................................................................................10

9 Installation practice .......................................................................................................................................................................................10

9.1 Preparatory work ..............................................................................................................................................................................10

9.2 Storage, handling and transport of pipes and fittings ........................................................................................10

9.3 Equipment ................................................................................................................................................................................................10

9.3.1 Butt fusion and debeading equipment ......................................................................................................10

9.3.2 Reduction equipment ...............................................................................................................................................11

9.3.3 Pipe skids/rollers .........................................................................................................................................................11

© ISO 2018 – All rights reserved iii
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SIST EN ISO 11297-3:2018
ISO 11297-3:2018(E)

9.3.4 Winching and rod-pulling equipment ........................................................................................................11

9.3.5 Pipe entry guides ..........................................................................................................................................................11

9.3.6 Reforming equipment ..............................................................................................................................................11

9.3.7 Electrofusion equipment .......................................................................................................................................12

9.3.8 Inspection equipment ..............................................................................................................................................12

9.3.9 Lifting equipment .........................................................................................................................................................12

9.4 Installation ...............................................................................................................................................................................................12

9.5 Process-related inspection and testing ...........................................................................................................................13

9.6 Lining termination ............................................................................................................................................................................13

9.7 Reconnection to existing manholes and laterals ....................................................................................................13

9.8 Final inspection and testing ......................................................................................................................................................13

9.9 Documentation ....................................................................................................................................................................................13

Annex A (normative) Factory-folded heat-reverted polyethylene (PE) pipe —

Determination of memory ability ....................................................................................................................................................14

Bibliography .............................................................................................................................................................................................................................16

iv © ISO 2018 – All rights reserved
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SIST EN ISO 11297-3:2018
ISO 11297-3:2018(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www .iso .org/patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following

URL: www .iso .org/iso/foreword .html.

This document was prepared by ISO/TC 138, Plastics pipes, fittings and valves for the transport of fluids,

Subcommittee SC 8, Rehabilitation of pipeline systems.

This second edition cancels and replaces the first edition (ISO 11297-3:2013), which has been technically

revised.
The main changes compared to the previous edition are as follows:

— Figure 1 and Clauses 1, 5.2.2, 5.5, 8.4, 9.3.4 and 9.4 have been technically revised;

— New sub-clauses 5.9, 6.3 and 8.9 specifying regional requirements for pipes, fittings and the

installed system respectively, have also been added in accordance with the Vienna Agreement, to

allow reference to European standards in countries where these are mandated by law in place of

ISO standards of identical scope.
A list of all parts in the ISO 11297 series can be found on the ISO website.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www .iso .org/members .html.
© ISO 2018 – All rights reserved v
---------------------- Page: 11 ----------------------
SIST EN ISO 11297-3:2018
ISO 11297-3:2018(E)
Introduction

This International 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:

— ISO 11296, Plastics piping systems for renovation of underground non-pressure drainage and sewerage

networks;

— ISO 11297, Plastics piping systems for renovation of underground drainage and sewerage networks

under pressure (this document);

— ISO 11298, Plastics piping systems for renovation of underground water supply networks;

— ISO 11299, Plastics piping systems for renovation of underground gas supply networks.

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”.
Each of the System Standards comprises a:
— Part 1: General

and all applicable renovation technique family-related parts, which for non- drainage and sewerage

networks under pressure include or potentially include the following:
— Part 2: Lining with continuous pipes
— Part 3: Lining with close-fit pipes (this document)
— Part 4: Lining with cured-in-place pipes
— Part 5: Lining with discrete pipes
— Part 6: Lining with adhesive-backed hoses

The requirements for any given renovation technique family are specified in Part 1, applied in

conjunction with the relevant other part. For example, both ISO 11297-1 and this document together

specify the requirements relating to lining with close-fit pipes. For complementary information, see

ISO 11295. Not all technique families are pertinent to every area of application and this is reflected in

the part numbers included in each System Standard.

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 ISO 11297 and

system standards for other applications.
vi © ISO 2018 – All rights reserved
---------------------- Page: 12 ----------------------
SIST EN ISO 11297-3:2018
ISO 11297-3:2018(E)
Figure 1 — Format of the renovation system standards
© ISO 2018 – All rights reserved vii
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SIST EN ISO 11297-3:2018
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SIST EN ISO 11297-3:2018
INTERNATIONAL STANDARD ISO 11297-3:2018(E)
Plastics piping systems for renovation of underground
drainage and sewerage networks under pressure —
Part 3:
Lining with close-fit pipes
1 Scope

This document, in conjunction with ISO 11297-1, specifies requirements and test methods for close-fit

lining systems intended to be used for the renovation of underground drainage and sewerage networks

under pressure.

It applies to pipes and fittings, as manufactured, as well as to the installed lining system. It is applicable

to polyethylene (PE) pipes of either solid wall single layer or co-extruded layer construction, which is

reduced in the factory or on site to provide a close-fitting independent or interactive pressure pipe liner,

as well as associated fittings and joints for the construction of the lining system. It is not applicable to

PE coated pipes having a peelable, contiguous, thermoplastic additional layer on the outside of the pipe.

It is applicable to PE pipes, fittings and assemblies intended to be used at an operating temperature of

20 °C as the reference temperature.

NOTE For applications operating at constant temperatures greater than 20 °C and up to 40 °C, see

ISO 4427-1:2007, Annex A.
2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and are

indispensable for its application. For dated references, only the edition cited applies. For undated

references, the latest edition of the referenced document (including any amendments) applies.

ISO 3, Preferred numbers — Series of preferred numbers

ISO 3126, Plastics piping systems — Plastics components — Determination of dimensions

ISO 4427-1:2007, Plastics piping systems — Polyethylene (PE) pipes and fittings for water supply —

Part 1: General

ISO 4427-2:2007, Plastics piping systems — Polyethylene (PE) pipes and fittings for water supply —

Part 2: Pipes

ISO 4427-3, Plastics piping systems — Polyethylene (PE) pipes and fittings for water supply — Part 3:

Fittings

ISO 4427-5:2007, Plastics piping systems — Polyethylene (PE) pipes and fittings for water supply — Part 5:

Fitness for purpose of the system

ISO 8772, Plastics piping systems for non-pressure underground drainage and sewerage — Polyethylene (PE)

ISO 9967, Thermoplastics pipes — Determination of creep ratio

ISO 11297-1:2018, Plastics piping systems for renovation of underground drainage and sewerage networks

under pressure — Part 1: General

ISO 12176-1, Plastics pipes and fittings — Equipment for fusion jointing polyethylene systems — Part 1:

Butt fusion
© ISO 2018 – All rights reserved 1
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SIST EN ISO 11297-3:2018
ISO 11297-3:2018(E)

ISO 12176-2, Plastics pipes and fittings — Equipment for fusion jointing polyethylene systems — Part 2:

Electrofusion

EN 12201-1, Plastics piping systems for water supply, and for drainage and sewerage under pressure —

Polyethylene (PE) — Part 1: General

EN 12201-2:2011, Plastics piping systems for water supply, and for drainage and sewerage under

pressure — Polyethylene (PE) — Part 2: Pipes

EN 12201-3, Plastics piping systems for water supply, and for drainage and sewerage under pressure —

Polyethylene (PE) — Part 3: Fittings

EN 12201-4, Plastics piping systems for water supply, and for drainage and sewerage under pressure —

Polyethylene (PE) — Part 4: Valves for water supply systems

EN 12201-5, Plastics piping systems for water supply, and for drainage and sewerage under pressure —

Polyethylene (PE) — Part 5: Fitness for purpose of 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
3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 11297-1 and the following apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— IEC Electropedia: available at https: //www .electropedia .org/
— ISO Online browsing platform: available at https: //www .iso .org/obp
3.1 General
3.1.1
compound formulation
clearly defined homogenous mixture o
...

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