EN ISO 9080:2003
(Main)Plastics piping and ducting systems - Determination of the long-term hydrostatic strength of thermoplastics materials in pipe form by extrapolation (ISO 9080:2003)
Plastics piping and ducting systems - Determination of the long-term hydrostatic strength of thermoplastics materials in pipe form by extrapolation (ISO 9080:2003)
ISO 9080:2003 describes a method for estimating 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 9080:2003)
Diese Internationale Norm beschreibt ein Verfahren zur Ermittlung der Zeitstand-Innendruckfestigkeit von thermoplastischen Werkstoffen durch statistische Extrapolation.
Dieses Verfahren gilt bei den vorgesehenen Temperaturen für sämtliche Arten thermoplastischer Rohre. Es wurde auf der Grundlage von Prüfergebnissen für Rohrsysteme entwickelt. Die Maße der zu prüfenden Rohre können in den entsprechenden Produkt-/Systemnormen festgelegt sein; sie sind in den Prüfbericht aufzunehmen.
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 9080:2003)
L'ISO 9080:2003 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 présente 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 - Določanje dolgotrajne hidrostatične trdnosti termoplastičnih materialov za cevi z metodo ekstrapolacije (ISO 9080:2003)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-oktober-2003
&HYQLLQNDQDOVNLVLVWHPLL]SROLPHUQLKPDWHULDORY'RORþDQMHGROJRWUDMQH
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 9080:2003)
Kunststoff-Rohrleitungs- und Schutzrohrsysteme - Bestimmung des Zeitstand-
Innendruckverhaltens von thermoplastischen Rohrwerkstoffen durch Extrapolation (ISO
9080:2003)
Systemes de canalisations et de gaines en matieres plastiques - Détermination de la
résistance hydrostatique a long terme des matieres thermoplastiques sous forme de
tubes par extrapolation (ISO 9080:2003)
Ta slovenski standard je istoveten z: EN ISO 9080:2003
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
March 2003
ICS 23.040.20
English version
Plastics piping and ducting systems - Determination of the long-
term hydrostatic strength of thermoplastics materials in pipe
form by extrapolation (ISO 9080:2003)
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 9080:2003) (ISO 9080:2003)
This European Standard was approved by CEN on 28 February 2003.
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 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 Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2003 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 9080:2003 E
worldwide for CEN national Members.
CORRECTED 2003-07-16
Foreword
This document (EN ISO 9080:2003) 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 September 2003, and conflicting national
standards shall be withdrawn at the latest by September 2003.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of
the following countries are bound to implement this European Standard: Austria, Belgium, Czech
Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and
the United Kingdom.
Endorsement notice
The text of ISO 9080:2003 has been approved by CEN as EN ISO 9080:2003 without any
modifications.
NOTE Normative references to International Standards are listed in Annex ZA (normative).
Annex ZA
(normative)
Normative references to international publications
with their relevant European publications
This European 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 listed hereafter. For dated references, subsequent amendments to or revisions of
any of these publications apply to this European Standard only when incorporated in it by
amendment or revision. For undated references the latest edition of the publication referred to
applies (including amendments).
NOTE Where an International Publication has been modified by common modifications, indicated
by (mod.), the relevant EN/HD applies.
Publication Year Title EN Year
ISO 3146 2000 Plastics - Determination of melting EN ISO 3146 2000
behaviour (melting temperature or
melting range) of semi-crystalline
polymers by capillary tube and
polarizing-microscope methods
INTERNATIONAL ISO
STANDARD 9080
First edition
2003-03-15
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 9080:2003(E)
©
ISO 2003
ISO 9080:2003(E)
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ii © ISO 2003 — All rights reserved
ISO 9080:2003(E)
Contents Page
Foreword. iv
Introduction . v
1 Scope. 1
2 Normative references . 1
3 Terms and definitions. 1
4 Acquisition of test data . 3
5 Procedure . 3
6 Example of calculation for a semi-crystalline polymer, software validation. 7
7 Test report . 7
Annex A (normative) Methods of data gathering and analysis . 9
Annex B (normative) Automatic knee detection . 13
Annex C (informative) Example of application of SEM to stress rupture data. 15
Annex D (informative) SEM software. 23
Bibliography . 24
ISO 9080:2003(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, fittings 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.
It cancels and replaces ISO/TR 9080:1992, which has been technically revised.
iv © ISO 2003 — All rights reserved
ISO 9080:2003(E)
Introduction
General
ISO/TR 9080, upon which this International Standard is based, is the result of considerable discussion within
working group 10 of subcommittee 5 of technical committee 138 of the International Organization for
Standardization (ISO) (referred to hereafter as ISO/TC 138/SC 5/WG 10), which was entrusted with the
development of the standard, which represents an agreed compromise incorporating features of several
accepted national procedures.
Furthermore, it is emphasized that the standard extrapolation method (SEM) described 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, which long years
of experience have shown to be satisfactory. This SEM is meant to be used to qualify a material in pipe form
prior to the introduction of such a material on the market.
A software package has been developed for the SEM analysis as described in Annex A and Annex B. A
Windows-based programme is available on diskette (see Annex D).
NOTE Use of this software package is recommended.
Principles
The suitability for use of a plastics pressure pipe is first of all determined by the performance under stress of
its material of construction, taking into account the envisaged service conditions (e.g. temperature). 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 environment can be water or air.
In certain cases, it is necessary to determine the value of the hydrostatic strength at either shorter lifetimes 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 stress that can cause failure in the stated time at
a stated temperature (the ultimate stress).
NOTE The MRS value (at 20 °C) is usually based on data obtained using water as the internal and external test
medium. It is obvious that indeed all data are used for validation of regression curves at higher temperatures (e.g. 70 °C),
including the data obtained with air as the external medium (e.g. at 110 °C).
This International Standard provides a definitive procedure incorporating an extrapolation using test data at
different temperatures analysed by multiple linear regression analysis. The results permit the determination of
material-specific design values in accordance with the procedures described in the relevant system standards.
This multiple linear regression analysis is based on the rate processes most accurately described by
log (stress) versus log (time) models.
10 10
In order to assess the predictive value of the model used, it has been considered necessary to make use of
the estimated 97,5 % lower prediction limit (LPL). The 97,5 % lower prediction limit is equi
...
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