Plastics piping systems for pressure and non-pressure water supply, drainage or sewerage - Glass-reinforced thermosetting plastics (GRP) systems based on unsaturated polyester (UP) resin (ISO 23856:2021)

This document specifies the properties of piping system components made from glass-reinforced thermosetting plastics (GRP) based on unsaturated polyester resin (UP). It is suited for all types of water supply, drainage and sewerage with or without pressure. Types of water supply include, but are not limited to, raw water, irrigation, cooling water, potable water, salt water, sea water, penstocks in power plants, processing plants and other water-based applications. This document is applicable to GRP UP piping systems, with flexible or rigid joints with or without end thrust load-bearing capability, primarily intended for use in direct buried installations.

Kunststoff-Rohrleitungssysteme für Wasserversorgung, Entwässerungssysteme und Abwasserleitungen mit und ohne Druck - Glasfaserverstärkte duroplastische Kunststoffe (GFK) auf der Basis von ungesättigtem Polyesterharz (UP) (ISO 23856:2021)

Dieses Dokument legt die Eigenschaften von Rohrleitungskomponenten aus glasfaserverstärkten duroplastischen Kunststoffen (GFK, en: glass-reinforced thermosetting plastics) auf der Basis von ungesättigtem Polyesterharz (UP, en: unsaturated polyester resin) fest. Es eignet sich für alle Wasserversorgungs , Entwässerungs  und Abwassersysteme, die unter Druck oder drucklos betrieben werden. Zu den Wasserversorgungssystemen gehören unter anderem Rohrleitungssysteme für Rohwasser, Bewässerung, Kühlwasser, Trinkwasser, Salzwasser, Meerwasser, Druckstollen in Kraftwerken, Verarbeitungsanlagen und andere wasserbasierte Anwendungen. Dieses Dokument gilt für GFK UP Rohr-leitungssysteme mit flexiblen oder starren Rohrverbindungen mit oder ohne Axialschubtragfähigkeit, die in erster Linie für den Einsatz in direkt im Erdreich verlegten Rohrleitungssystemen bestimmt sind.
ANMERKUNG 1 Für die Anwendung dieses Dokuments schließt der Begriff Polyesterharz (UP) auch Vinylesterharze (VE) mit ein.
ANMERKUNG 2 Rohrleitungssysteme, die diesem Dokument entsprechen, können auch für nicht erdverlegte Anlagen eingesetzt werden, sofern der Einfluss der Umgebung und der Rohrauflager bei der Planung und Auslegung der Rohre, Formstücke und Verbindungen berücksichtigt wird.
ANMERKUNG 3 Dieses Dokument kann auch für andere Rohreinbauarten gelten, wie z. B. Schlauchlining zur Sanierung bestehender Rohre.
ANMERKUNG 4 Auf dieses Dokument wird auch in ISO 25780 Bezug genommen, die wiederum Anforderungen an GFK Rohre für den Einbau im Rohrvortrieb festlegt.
Die Anforderungen an die Auslegung für den hydrostatischen Druck von Rohren, auf die sich dieses Dokument bezieht, erfüllen die Anforderungen von ISO/TS 20656 1 und das in ISO 2394 und EN 1990 beschriebene allgemeine Prinzip der Zuverlässigkeit von Bauwerken. Diese Internationalen Normen geben Verfahren zur Harmonisierung der Planungs  und Auslegungspraktiken vor und befassen sich mit der Ausfall¬wahrscheinlichkeit sowie mit den möglichen Folgen von Ausfällen. Die Planungs  und Auslegungspraktiken basieren auf einem Teilsicherheitskonzept sowie auf einem technikbezogenen Risikomanagement.
Dieses Dokument gilt für Rundrohre, Formstücke und deren Verbindungen in den Nennweiten DN 50 bis DN 4 000, die für den Transport von Wasser bei normalen Betriebsbedingungen, sowohl drucklos als auch unter Druck bestimmt sind.

Systèmes de canalisations en matières plastiques pour l'alimentation en eau, les branchements et les collecteurs d'assainissement avec ou sans pression - Systèmes en plastiques thermodurcissables renforcés de verre (PRV) à base de résine de polyester non saturé (UP) (ISO 23856:2021)

Cevni sistemi iz polimernih materialov za odvodnjavanje ali kanalizacijo in oskrbo z vodo, s tlakom in brez njega - S steklenimi vlakni ojačeni duromerni materiali (GRP) na osnovi nenasičene poliestrske smole (UP) (ISO 23856:2021)

General Information

Status
Not Published
Public Enquiry End Date
04-Sep-2019
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
07-Jul-2021
Due Date
11-Sep-2021

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SLOVENSKI STANDARD
oSIST prEN ISO 23856:2019
01-september-2019

Cevni sistemi iz polimernih materialov za odvodnjavanje ali kanalizacijo in oskrbo

z vodo, s tlakom in brez njega - S steklenimi vlakni ojačeni duromerni materiali
(GRP) na osnovi nenasičene poliestrske smole (UP) (ISO/DIS 23856:2019)
Plastics piping systems for pressure and non-pressure water supply, drainage or
sewerage - Glass-reinforced thermosetting plastics (GRP) systems based on
unsaturated polyester (UP) resin (ISO/DIS 23856:2019)
Systèmes de canalisation en matières plastiques pour les branchements et les
collecteurs d'assainissement avec ou sans pression - Systèmes en plastiques

thermodurcissables renforcés de verre (PRV) à base de résine de polyester non saturé

(UP) (ISO/DIS 23856:2019)
Ta slovenski standard je istoveten z: prEN ISO 23856
ICS:
23.040.05 Cevovodi za zunanje Pipeline and its parts for
sisteme za odpadno vodo in external sewage systems
njihovi deli
83.120 Ojačani polimeri Reinforced plastics
91.140.80 Drenažni sistemi Drainage systems
93.030 Zunanji sistemi za odpadno External sewage systems
vodo
oSIST prEN ISO 23856:2019 en

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

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oSIST prEN ISO 23856:2019
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oSIST prEN ISO 23856:2019
DRAFT INTERNATIONAL STANDARD
ISO/DIS 23856
ISO/TC 138/SC 6 Secretariat: ASI
Voting begins on: Voting terminates on:
2019-06-13 2019-09-05
Plastics piping systems for pressure and non-pressure
water supply, drainage or sewerage — Glass-reinforced
thermosetting plastics (GRP) systems based on
unsaturated polyester (UP) resin
ICS: 23.040.20; 91.140.80; 93.030
THIS DOCUMENT IS A DRAFT CIRCULATED
This document is circulated as received from the committee secretariat.
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
ISO/CEN PARALLEL PROCESSING
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 23856:2019(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION. ISO 2019
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oSIST prEN ISO 23856:2019
ISO/DIS 23856:2019(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2019

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

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ii © ISO 2019 – All rights reserved
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oSIST prEN ISO 23856:2019
ISO/DIS 23856:2019(E)
Contents Page

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

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

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

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

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

4 General .........................................................................................................................................................................................................................12

4.1 Classification ..........................................................................................................................................................................................12

4.1.1 Categories ...........................................................................................................................................................................12

4.1.2 Nominal size .....................................................................................................................................................................12

4.1.3 Nominal stiffness ..........................................................................................................................................................12

4.1.4 Nominal pressure .........................................................................................................................................................13

4.2 Materials ....................................................................................................................................................................................................13

4.2.1 General...................................................................................................................................................................................13

4.2.2 Reinforcement .................................................................................................................................................................14

4.2.3 Resin ........................................................................................................................................................................................14

4.2.4 Aggregates and fillers ...............................................................................................................................................14

4.2.5 Thermoplastics liners ...............................................................................................................................................14

4.2.6 Elastomers ..........................................................................................................................................................................14

4.2.7 Metals .....................................................................................................................................................................................14

4.3 Wall construction ...............................................................................................................................................................................15

4.3.1 Inner layer ..........................................................................................................................................................................15

4.3.2 Structural layer ...............................................................................................................................................................15

4.3.3 Outer layer ..........................................................................................................................................................................15

4.4 Appearance .............................................................................................................................................................................................15

4.5 Reference conditions for testing ...........................................................................................................................................15

4.5.1 Temperature .....................................................................................................................................................................15

4.5.2 Properties of water for testing ..........................................................................................................................15

4.5.3 Loading conditions ........................................................................................................................................... ...........16

4.5.4 Conditioning .....................................................................................................................................................................16

4.5.5 Measurement of dimensions ..............................................................................................................................16

4.6 Elapsed time, x, for determination of long-term properties .........................................................................16

4.7 Joints .............................................................................................................................................................................................................16

4.7.1 General...................................................................................................................................................................................16

4.7.2 Types of joint ....................................................................................................................................................................16

4.7.3 Flexibility of the joint ................................................................................................................................................16

4.7.4 Sealing ring ........................................................................................................................................................................17

4.7.5 Adhesives ...................................................................... .......................................................................................................17

4.8 Effect on water quality ..................................................................................................................................................................17

4.9 Assessment of conf ormity ..........................................................................................................................................................17

5 Pipes ...............................................................................................................................................................................................................................17

5.1 Type of pipes ..........................................................................................................................................................................................17

5.2 Geometrical characteristics ......................................................................................................................................................18

5.2.1 Diameter ..............................................................................................................................................................................18

5.2.2 Wall thickness .................................................................................................................................................................23

5.2.3 Length.....................................................................................................................................................................................23

5.3 Mechanical characteristics.........................................................................................................................................................24

5.3.1 Initial specific ring stiffness ................................................................................................................................24

5.3.2 Long-term specific ring stiffness under wet conditions .............................................................24

5.3.3 Initial resistance to failure in a deflected condition .......................................................................25

5.3.4 Ultimate long-term resistance to failure in a deflected condition......................................27

5.3.5 Initial specific longitudinal tensile strength .........................................................................................28

5.3.6 Initial design and failure pressures for pressure pipes ...............................................................30

© ISO 2019 – All rights reserved iii
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oSIST prEN ISO 23856:2019
ISO/DIS 23856:2019(E)

5.3.7 Long-term failure pressure ..................................................................................................................................32

5.4 Resistance to strain corrosion ................................................................................................................................................33

5.4.1 General...................................................................................................................................................................................33

5.4.2 Procedure using failure points ..........................................................................................................................33

5.4.3 Procedure using specified levels of strain...............................................................................................34

5.4.4 Test piece length............................................................................................................................................................35

5.4.5 Test solution......................................................................................................................................................................35

5.5 Marking ......................................................................................................................................................................................................35

6 Fittings .........................................................................................................................................................................................................................36

6.1 All types ......................................................................................................................................................................................................36

6.1.1 General...................................................................................................................................................................................36

6.1.2 Diameter series ..............................................................................................................................................................36

6.1.3 Nominal pressure (PN) ........................................................................................................................................... .36

6.1.4 Nominal stiffness (SN) .............................................................................................................................................36

6.1.5 Fitting type .........................................................................................................................................................................36

6.1.6 Mechanical characteristics of fittings .........................................................................................................36

6.1.7 Installed leaktightness of fittings ...................................................................................................................37

6.1.8 Dimensions ........................................................................................................................................................................37

6.2 Bends ............................................................................................................................................................................................................37

6.2.1 Classification of bends .............................................................................................................................................37

6.2.2 Dimensions and tolerances of bends ...........................................................................................................38

6.3 Branches ....................................................................................................................................................................................................41

6.3.1 Classification of branches......................................................................................................................................41

6.3.2 Dimensions and tolerances of branches ...................................................................................................41

6.4 Reducers ....................................................................................................................................................................................................44

6.4.1 Classification of reducers ......................................................................................................................................44

6.4.2 Dimensions and tolerances of reducers ....................................................................................................44

6.5 Non pressure saddles .....................................................................................................................................................................46

6.5.1 Classification of saddles ..........................................................................................................................................46

6.5.2 Dimensions of saddles and associated tolerances ...........................................................................47

6.6 Flanges ........................................................................................................................................................................................................47

6.6.1 Classification of flanges ...........................................................................................................................................47

6.6.2 Dimensions and tolerances for adaptors .................................................................................................48

6.7 Marking ......................................................................................................................................................................................................50

7 Joint performance ............................................................................................................................................................................................50

7.1 General ........................................................................................................................................................................................................50

7.1.1 Interchangeability .................. .................................................... ..................................................................................50

7.1.2 Requirements ..................................................................................................................................................................50

7.1.3 Test temperature ..........................................................................................................................................................51

7.1.4 Non-pressure piping and joints .......................................................................................................................51

7.1.5 Dimensions ........................................................................................................................................................................51

7.2 Flexible joints ........................................................................................................................................................................................51

7.2.1 General...................................................................................................................................................................................51

7.2.2 Maximum allowable draw ....................................................................................................................................51

7.2.3 Maximum allowable angular deflection ...................................................................................................51

7.2.4 Flexible non-end-load-bearing joints with elastomeric sealing rings ............................51

7.2.5 Flexible end-load-bearing joints with elastomeric sealing rings ........................................52

7.3 Rigid joints ...............................................................................................................................................................................................52

7.3.1 Wrapped or cemented ........................................................................................................................................... ...52

7.3.2 Bolted flange joints .....................................................................................................................................................53

7.4 Marking ......................................................................................................................................................................................................53

Annex A (normative) Principles used to establish the design requirements based on

regression testing and consideration of the variability of the product....................................................55

Bibliography .............................................................................................................................................................................................................................60

iv © ISO 2019 – All rights reserved
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oSIST prEN ISO 23856:2019
ISO/DIS 23856:2019(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 Technical Committee ISO/TC 138, Plastics pipes, fittings and valves for

the transport of fluids, Subcommittee SC 6, Reinforced plastics pipes and fittings for all applications.

© ISO 2019 – All rights reserved v
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oSIST prEN ISO 23856:2019
ISO/DIS 23856:2019(E)
Introduction

This system standard is a result of merging ISO 10639, ISO 10467 as well as EN 1796 and EN 14364.

As these standards were almost identical, except for the requirement on chemical resistance of sewer

pipes, it was decided that it would be beneficial for the user and make his work easier to refer only to

one document.
vi © ISO 2019 – All rights reserved
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oSIST prEN ISO 23856:2019
DRAFT INTERNATIONAL STANDARD ISO/DIS 23856:2019(E)
Plastics piping systems for pressure and non-pressure
water supply, drainage or sewerage — Glass-reinforced
thermosetting plastics (GRP) systems based on
unsaturated polyester (UP) resin
1 Scope

This document specifies the properties of piping system components made from glass-reinforced

thermosetting plastics (GRP) based on unsaturated polyester resin (UP). It is suited for all types of

water supply, drainage and sewerage with or without pressure. Types of water supply include, but are

not limited to, raw water, irrigation, cooling water, potable water, salt water, sea water, penstocks in

power plants, processing plants and other water-based applications. This document is applicable to

GRP UP piping systems, with flexible or rigid joints with or without end thrust load-bearing capability,

primarily intended for use in direct buried installations.

NOTE 1 For the purpose of this document, the term polyester resin (UP) also includes vinyl-ester resins (VE).

NOTE 2 Piping systems conforming to this document can also be used for non-buried applications, provided

the influence of the environment and the supports are considered in the design of the pipes, fittings and joints.

NOTE 3 This document can also apply for other installations, such as slip-lining rehabilitation of existing pipes.

NOTE 4 This document is also referenced in ISO 25780, which specifies requirements for GRP-pipes used for

jacking installation.

The requirements for the hydrostatic pressure design of pipes referring to this document meet the

requirements of ISO/TS 20656-1 and the general principle for the reliability of structures detailed in

ISO 2394 and in EN 1990. These International Standards provide procedures for the harmonization of

design practices and address the probability of failure, as well as possible consequences of failures. The

design practices are based on a partial safety factor concept, as well as on risk management engineering.

This document is applicable to pipes, fittings and their joints of nominal sizes from DN 50 to DN 4000

which are intended to be used for the conveyance of water at temperatures up to 50 °C, with or without

pressure. In a pipework system, pipes and fittings of different nominal pressure and stiffness ratings

may be used together. Clause 4 specifies the general aspects of GRP UP piping systems intended to be

used in the field of drainage or sewerage with or without pressure.

Clause 5 specifies the characteristics of pipes made from GRP UP with or without aggregates and/or

fillers. The pipes may have a thermoplastics or thermosetting resin liner. Clause 5 also specifies the test

parameters for the test methods referred to in this document.

Clause 6 specifies the characteristics of fittings made from GRP UP, with or without a thermoplastics or

thermosetting resin liner, intended to be used in the field of drainage and sewerage. Clause 6 specifies

the dimensional and performance requirements for bends, branches, reducers, saddles and flanged

adaptors. Clause 6 covers requirements to prove the structural design of fittings. It is applicable to

fittings made using any of the following techniques:
— fabrication from straight pipes;
— moulding by
1) filament winding,
2) tape winding,
3) contact moulding, and
© ISO 2019 – All rights reserved 1
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oSIST prEN ISO 23856:2019
ISO/DIS 23856:2019(E)
4) hot or cold compression moulding.

Clause 7 is applicable to the joints to be used in GRP UP piping systems to be used for the conveyance of

surface water and sewerage, both buried and non-buried. It covers requirements to prove the design of

the joint. Clause 7 specifies type test performance requirements for the following joints as a function of

the declared nominal pressure rating of the pipeline or system:
a) socket-and-spigot (including double-socket) joints or mechanical joints;
b) locked socket-and-spigot joints;
c) cemented or wrapped joints;
d) bolted flange joints.
2 Normative references
The following documents are r
...

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