EN ISO 9080:2012
(Main)Plastics piping and ducting systems - Determination of the long-term hydrostatic strength of thermoplastics materials in pipe form by extrapolation (ISO 9080:2012)
Plastics piping and ducting systems - Determination of the long-term hydrostatic strength of thermoplastics materials in pipe form by extrapolation (ISO 9080:2012)
ISO 9080:2012 specifies a method for predicting the long-term hydrostatic strength of thermoplastics materials by statistical extrapolation. The method is applicable to all types of thermoplastics pipe at applicable temperatures. It was developed on the basis of test data from pipe systems.
Kunststoff-Rohrleitungs- und Schutzrohrsysteme - Bestimmung des Zeitstand-Innendruckverhaltens von thermoplastischen Rohrwerkstoffen durch Extrapolation (ISO 9080:2012)
Diese Internationale Norm legt ein Verfahren zur Vorhersage der Zeitstand-Innendruckfestigkeit von thermo-plastischen Werkstoffen durch statistische Extrapolation fest. Das Verfahren gilt bei den vorgesehenen Temperaturen für sämtliche Arten thermoplastischer Rohre. Es wurde auf der Grundlage von Prüfergebnissen für Rohrsysteme entwickelt.
Systèmes de canalisations et de gaines en matières plastiques - Détermination de la résistance hydrostatique à long terme des matières thermoplastiques sous forme de tubes par extrapolation (ISO 9080:2012)
L'ISO 9080:2012 décrit une méthode d'estimation de la résistance hydrostatique à long terme des matières thermoplastiques à l'aide d'une extrapolation par les statistiques. La méthode peut être utilisée pour tous les types de tubes thermoplastiques aux températures appropriées. Elle a été développée sur la base de données d'essai provenant de systèmes de canalisations.
Cevni in kanalski sistemi iz polimernih materialov - Ugotavljanje dolgotrajne hidrostatične trdnosti termoplastičnih materialov za cevi z metodo ekstrapolacije (ISO 9080:2012)
Ta mednarodni standard določa metodo za predvidevanje dolgotrajne hidrostatične trdnosti termoplastičnih materialov s statistično ekstrapolacijo. Ta metoda se uporablja za vse vrste termoplastičnih cevi pri ustreznih temperaturah. Razvit je bil na osnovi podatkov o preskusu iz cevnih sistemov.
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
01-december-2012
1DGRPHãþD
SIST EN ISO 9080:2003
&HYQLLQNDQDOVNLVLVWHPLL]SROLPHUQLKPDWHULDORY8JRWDYOMDQMHGROJRWUDMQH
KLGURVWDWLþQHWUGQRVWLWHUPRSODVWLþQLKPDWHULDORY]DFHYL]PHWRGRHNVWUDSRODFLMH
,62
Plastics piping and ducting systems - Determination of the long-term hydrostatic strength
of thermoplastics materials in pipe form by extrapolation (ISO 9080:2012)
Kunststoff-Rohrleitungs- und Schutzrohrsysteme - Bestimmung des Zeitstand-
Innendruckverhaltens von thermoplastischen Rohrwerkstoffen durch Extrapolation (ISO
9080:2012)
Systèmes de canalisations et de gaines en matières plastiques - Détermination de la
résistance hydrostatique à long terme des matières thermoplastiques sous forme de
tubes par extrapolation (ISO 9080:2012)
Ta slovenski standard je istoveten z: EN ISO 9080:2012
ICS:
23.040.20 Cevi iz polimernih materialov Plastics pipes
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN ISO 9080
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2012
ICS 23.040.20 Supersedes EN ISO 9080:2003
English Version
Plastics piping and ducting systems - Determination of the long-
term hydrostatic strength of thermoplastics materials in pipe
form by extrapolation (ISO 9080:2012)
Systèmes de canalisations et de gaines en matières Kunststoff-Rohrleitungs- und Schutzrohrsysteme -
plastiques - Détermination de la résistance hydrostatique à Bestimmung des Zeitstand-Innendruckverhaltens von
long terme des matières thermoplastiques sous forme de thermoplastischen Rohrwerkstoffen durch Extrapolation
tubes par extrapolation (ISO 9080:2012) (ISO 9080:2012)
This European Standard was approved by CEN on 6 October 2012.
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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.
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EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2012 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 9080:2012: E
worldwide for CEN national Members.
Contents Page
Foreword .3
Foreword
This document (EN ISO 9080:2012) has been prepared by Technical Committee ISO/TC 138 "Plastics pipes,
fittings and valves for the transport of fluids" in collaboration 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 2013, and conflicting national standards shall be withdrawn at the
latest by April 2013.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 9080:2003.
According to the CEN/CENELEC Internal Regulations, the national standards organisations 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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
Endorsement notice
The text of ISO 9080:2012 has been approved by CEN as a EN ISO 9080:2012 without any modification.
INTERNATIONAL ISO
STANDARD 9080
Second edition
2012-10-15
Plastics piping and ducting systems —
Determination of the long-term
hydrostatic strength of thermoplastics
materials in pipe form by extrapolation
Systèmes de canalisations et de gaines en matières plastiques —
Détermination de la résistance hydrostatique à long terme des matières
thermoplastiques sous forme de tubes par extrapolation
Reference number
ISO 9080:2012(E)
©
ISO 2012
ISO 9080:2012(E)
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO’s
member body in the country of the requester.
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Published in Switzerland
ii © ISO 2012 – All rights reserved
ISO 9080:2012(E)
Contents Page
Foreword .iv
Introduction . v
0.1 General . v
0.2 Principles . v
0.3 Use of the methods . vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Acquisition of test data . 3
4.1 Test conditions . 3
4.2 Distribution of internal pressure levels and time ranges . 3
5 Procedure . 3
5.1 Data gathering and analysis . 3
5.2 Extrapolation time factors for polyolefins (semi-crystalline polymers) . 6
5.3 Extrapolation time factors for glassy, amorphous vinyl chloride based polymers . 7
5.4 Extrapolation time factors for polymers other than those covered in 5.2 and 5.3 . 7
6 Example of calculation, software validation . 7
7 Test report . 8
Annex A (normative) Methods of analysis . 9
Annex B (normative) Automatic knee detection .13
Annex C (informative) Application of SEM to stress rupture data of a semi-crystalline polymer .14
Annex D (informative) Application of SEM to stress rupture data of a vinyl chloride based polymer .22
Annex E (informative) Software for calculation of stress-rupture data according to ISO 9080 .28
Bibliography .29
ISO 9080:2012(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
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.
ISO 9080 was prepared by Technical Committee ISO/TC 138, Plastics pipes, fitings and valves for the transport
of fluids, Subcommittee SC 5, General properties of pipes, fittings and valves of plastic materials and their
accessories — Test methods and basic specifications.
This second edition cancels and replaces the first edition (ISO 9080:2003), which has been technically revised.
The following changes have been made:
— all references to lifetime have been removed, as this standard only deals with the mathematics for
extrapolation and the calculation of long-term strength;
— a more accurate description of the number and distribution of the observations and of the use of the
extrapolation has been included;
— the observations in the example of Annex C have been modified in order to comply with the specifications
of this standard and, consequently, the results of the regression calculations have been updated;
— a second set of observations has been added in Annex D in order to provide an evaluation according to
the 3-parameter model (see Annex C), and according to the 4-parameter model (see Annex D);
— a second software package has been evaluated and included in Annex E.
iv © ISO 2012 – All rights reserved
ISO 9080:2012(E)
Introduction
0.1 General
This Standard Extrapolation Method (SEM) is meant to be used to evaluate the long-term hydrostatic strength
of a material in pipe form. Product standards have specific requirements for the physical and mechanical
properties of the material used for the intended application. It is emphasized that the Standard Extrapolation
Method (SEM) described in this document is not intended to be used to disqualify existing procedures for
arriving at design stresses or allowable pressures for pipelines made of plastics materials, or to disqualify
pipelines made of materials proven by such procedures, for which experience over many years has been
shown to be satisfactory.
Software packages have been developed for the SEM analysis as described in Annex A and Annex B. Windows-
based programmes are commercially available (see Annex E). Use of these software packages is recommended.
0.2 Principles
The suitability of a plastics material for a pressure pipe is determined by its long-term performance under
hydrostatic stress when tested in pipe form, taking into account the envisaged service conditions (e.g.
temperature). For design purposes, it is conventional to express this by means of the hydrostatic (hoop) stress
which a plastics pipe made of the material under consideration is expected to be able to withstand for 50 years
at an ambient temperature of 20 °C using water as the internal test medium. The outside test environment can
be water or air. This method is not intended to imply service life. In certain cases, it is necessary to determine
the value of the hydrostatic strength at either shorter design times or higher temperatures, or on occasion both.
The method given in this International Standard is designed to meet the need for both types of estimate. The
result obtained will indicate the lower prediction limit (LPL), which is the lower confidence limit of the prediction
of the value of the s
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