BS EN ISO 9080-2003 塑料管道和导管系统.用外推法测定热塑性塑料管材的长期静液压强度.pdf

BRITISH STANDARD BS EN ISO 90802003 Incorporating Corrigendum No. 1 Plastics piping and ducting systems Determination of the long-term hydrostatic strength of thermoplastics materials in pipe by extrapolation The European Standard EN ISO 90802003 has the status of a British Standard ICS 23.040.20 Licensed Copy Institute Of Technology Tallaght, Institute of Technology, Tue Sep 26 103044 BST 2006, Uncontrolled Copy, c BSI BS EN ISO 90802003 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 27 March 2003 BSI 19 August 2003 ISBN 0 580 41499 X National foreword This British Standard is the official English language version of EN ISO 90802003. It is identical with ISO 90802003. The UK participation in its preparation was entrusted by Technical Committee PRI/88, Plastic piping systems, to Subcommittee PRI/88/4, Test s, which has the responsibility to A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests ined; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN ISO title page, the EN ISO foreword page, the ISO title page, pages ii to vi, pages 1 to 24, the Annex ZA page and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments 14620 Corrigendum No. 1 19 August 2003 Replacing the EN ISO foreword page and incorporating the Annex ZA page Licensed Copy Institute Of Technology Tallaght, Institute of Technology, Tue Sep 26 103044 BST 2006, Uncontrolled Copy, c BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 9080 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 by extrapolation ISO 90802003 Systmes de canalisations et de gaines en matires plastiques - Dtermination de la rsistance hydrostatique long terme des matires thermoplastiques sous e de tubes par extrapolation ISO 90802003 Kunststoff-Rohrleitungs- und Schutzrohrsysteme - Bestimmung des Zeitstand-Innendruckverhaltens von thermoplastischen Rohrwerkstoffen durch Extrapolation ISO 90802003 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, Slovak Republic, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre rue de Stassart, 36 B-1050 Brussels 2003 CENAll rights of exploitation in any and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 90802003 E Licensed Copy Institute Of Technology Tallaght, Institute of Technology, Tue Sep 26 103044 BST 2006, Uncontrolled Copy, c BSI CORRECTED 2003-07-16 Foreword This document EN ISO 90802003 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 90802003 has been approved by CEN as EN ISO 90802003 without any modifications. NOTE Normative references to International Standards are listed in Annex ZA normative. EN ISO 90802003 Licensed Copy Institute Of Technology Tallaght, Institute of Technology, Tue Sep 26 103044 BST 2006, Uncontrolled Copy, c BSI Reference number ISO 90802003E INTERNATIONAL STANDARD ISO 9080 First edition 2003-03-15 Plastics piping and ducting systems Determination of the long-term hydrostatic strength of thermoplastics materials in pipe by extrapolation Systmes de canalisations et de gaines en matires plastiques Dtermination de la rsistance hydrostatique long terme des matires thermoplastiques sous e de tubes par extrapolation EN ISO 90802003 Licensed Copy Institute Of Technology Tallaght, Institute of Technology, Tue Sep 26 103044 BST 2006, Uncontrolled Copy, c BSI EN ISO 90802003 ii Licensed Copy Institute Of Technology Tallaght, Institute of Technology, Tue Sep 26 103044 BST 2006, Uncontrolled Copy, c BSI IS0809 O3002E I SO 3002 All irhgts seredevr iii 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 s of data gathering and analysis ..................................................................... 9 Annex B normative Automatic knee detection ........................................................................................... 13 Annex C inative Example of application of SEM to stress rupture data........................................... 15 Annex D inative SEM software.............................................................................................................. 23 Bibliography ..................................................................................................................................................... 24 EN ISO 90802003 iii Licensed Copy Institute Of Technology Tallaght, Institute of Technology, Tue Sep 26 103044 BST 2006, Uncontrolled Copy, c BSI IS0809 O3002E vi I SO 3002 All irhgts seredevr 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 s and basic specifications. It cancels and replaces ISO/TR 90801992, which has been technically revised. EN ISO 90802003 iv Licensed Copy Institute Of Technology Tallaght, Institute of Technology, Tue Sep 26 103044 BST 2006, Uncontrolled Copy, c BSI IS0809 O3002E I SO 3002 All irhgts seredevr v 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 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 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 perance 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 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 log10stress versus log10time models. 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 equivalent to the lower confidence limit of the 95 confidence interval of the predicted value. This convention is used in the mathematical calculations to be consistent with the literature. This aspect necessitates the use of statistical techniques. The can provide a systematic basis for the interpolation and extrapolation of stress rupture characteristics at operating conditions different from the conventional 50 years at 20 C. Taking into account the extrapolation factors see 5.1.4, the extrapolation time limit can go up to 100 years. EN ISO 90802003 v Licensed Copy Institute Of Technology Tallaght, Institute of Technology, Tue Sep 26 103044 BST 2006, Uncontrolled Copy, c BSI IS0809 O3002E iv I SO 3002 All irhgts seredevr It is essential that the medium used for pressurizing the pipe does not have an adverse effect on the pipe. In general, water is considered t