1、BSI Standards PublicationBS EN ISO 3458:2015Plastics piping systems Mechanical joints betweenfittings and pressure pipes Test method for leaktightnessunder internal pressureBS EN ISO 3458:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO 3458:2015.It supe
2、rsedes BS EN 715:1995 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee PRI/88/4, Test Methods - Plastic Piping.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include a
3、ll the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2015. Published by BSI StandardsLimited 2015ISBN 978 0 580 81754 0ICS 23.040.60Compliance with a British Standard cannot confer immunity fromlegal obligations.This British St
4、andard was published under the authority of theStandards Policy and Strategy Committee on 30 April 2015.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 3458 April 2015 ICS 23.040.60 Supersedes EN 715:1994English Version Plastics piping sy
5、stems - Mechanical joints between fittings and pressure pipes - Test method for leaktightness under internal pressure (ISO 3458:2015) Systmes de canalisations en plastique - Assemblages mcaniques entre raccords et tubes sous pression - Mthode dessai pour ltanchit sous pression interne (ISO 3458:2015
6、) Kunststoff-Rohrleitungssysteme - Mechanische Verbindungen zwischen Fittings und Druckrohren - Prfung der Dichtheit bei Innendruck (ISO 3458:2015) This European Standard was approved by CEN on 14 November 2014. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulat
7、e 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 Stan
8、dard 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 nat
9、ional 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, Sl
10、ovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by any me
11、ans reserved worldwide for CEN national Members. Ref. No. EN ISO 3458:2015 EBS EN ISO 3458:2015EN ISO 3458:2015 (E) 3 Foreword This document (EN ISO 3458:2015) has been prepared by Technical Committee ISO/TC 138 “Plastics pipes, fittings and valves for the transport of fluids“ in collaboration with
12、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 October 2015, and conflicting
13、national standards shall be withdrawn at the latest by October 2015. 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 sup
14、ersedes EN 715:1994. 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 M
15、acedonia, 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 3458:2015 has been approved by
16、CEN as EN ISO 3458:2015 without any modification. BS EN ISO 3458:2015ISO 3458:2015(E)Foreword iv1 Scope . 12 Principle 13 Test parameters and requirements 14 Apparatus . 15 Test pieces . 36 Procedure. 37 Test report . 3Annex A (normative) Test parameters . 5 ISO 2015 All rights reserved iiiContents
17、PageBS EN ISO 3458:2015ISO 3458:2015(E)ForewordISO (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
18、 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 Electrotec
19、hnical 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
20、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 respo
21、nsible 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
22、for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT), see the following
23、URL: Foreword Supplementary information .The committee responsible for this document is ISO/TC 138, Plastics pipes, fittings and valves for the transport of fluids, Subcommittee SC 5, General properties of pipes, fittings and valves of plastics materials and their accessories Test methods and basic
24、specifications.This second edition cancels and replaces the first edition (ISO 3458:1976), which has been technically revised. The reason for modification is for applicability to other plastics materials, other sizes and/or other test conditions and alignment with texts of other International Standa
25、rds on test methods. This edition of ISO 3458 is prepared under Vienna Agreement, so that the content is also aligned with the EN 715:1994, which will be replaced.The modifications are the following: no material is mentioned; test parameters are omitted, although the original test parameters can be
26、found in Annex A; the diameter limit is removed; no requirements are given; editorial changes have been introduced.iv ISO 2015 All rights reservedBS EN ISO 3458:2015Plastics piping systems Mechanical joints between fittings and pressure pipes Test method for leaktightness under internal pressureWARN
27、ING Users of this International Standard should be familiar with normal laboratory practice, if applicable. The use of this International Standard might involve hazardous materials, operations, and equipment. This International Standard does not purport to address all of the safety concerns, if any,
28、 associated with its use. It is the responsibility of the user of this International Standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.1 ScopeThis International Standard specifies the method of test for checking the l
29、eak tightness of assembled joints between mechanical fittings and plastic pressure pipes. The test applies regardless of the design and material of the fitting used for jointing plastic pipe.This test method is not applicable to fusion-welded joints.2 PrincipleThe leak tightness of an assembled join
30、t is checked while the joint is subjected to an internal test pressure greater than the nominal pressure for which the pipe is rated with the pieces joined subject to the longitudinal force, induced by the hydrostatic end thrust.3 Test parameters and requirementsThe test parameters of the standard w
31、hich refers to this test standard shall be used and the requirements shall be fulfilled. If one or more parameters are not given in the referring International Standard, the ones given in Annex A shall apply.The following test parameters should be given by the standard which refers to this test stan
32、dard:a) test medium;b) test pressure (bar or MPa);c) test duration (h);d) test temperature (C);e) free length (mm).4 Apparatus4.1 A suitable apparatus is shown in Figure 1.4.2 Pressure source connected to the test specimens, capable of maintaining for at least 1 h a minimum water or air pressure to
33、an accuracy of 2 %.4.3 Pressure measuring device (7), capable of checking performance of the test pressure with 4.2.INTERNATIONAL STANDARD ISO 3458:2015(E) ISO 2015 All rights reserved 1BS EN ISO 3458:2015ISO 3458:2015(E)Key1 air release valve2 connecting element3 fitting to be tested4 pipe piece5 f
34、itting (option) to be tested6 endcap7 pressure measuring device8 valve9 connection pressure source10 supporting framel0pipe free lengthFigure 1 Diagram of typical apparatusNOTE If the test is performed in a water bath, pressure equipment for detecting leakage is optional.2 ISO 2015 All rights reserv
35、edBS EN ISO 3458:2015ISO 3458:2015(E)5 Test piecesThe test specimen shall consist of one or more joints formed by the assembly of at least one fitting and one or more pieces of plastic pressure pipe of the size and quality for which the fitting is designed.The fittings and pipes shall not be tested
36、until 24 h after their production. For practical reasons, the manufacturer can wait a shorter time before testing. In case of dispute, a duration of 24 h shall apply.One end of the test specimen shall be connected to the pressure source. The other end(s) shall be sealed off in such a way that, when
37、the test pressure is applied, longitudinal stresses are exerted within the pipe wall due to the pressure acting on the end fittings.The assembly of the joint should be carried out in accordance with the manufacturers instructions.6 ProcedureFill the test specimen with water or air at the specified t
38、est temperature. If water is used as test medium ensure all air is removed and excluded from the test piece for the remainder of the procedure.Secure the test specimen to the apparatus. Minimum conditioning times are given in Table 1.Table 1 Conditioning periodsNominal wall thickness of the pipe mmM
39、inimum conditioning period mine 10 2010 e 20 6020 e 120If water is used as test medium and the test is carried out in air, ensure that the outside of the test specimen is completely dry.After conditioning, progressively and smoothly apply the specified test pressure in the shortest time practicable.
40、 The test starts on achieving the required test pressure.Maintain the specified temperature within 2 C, and pressure within 2 %, while monitoring the apparatus for any indication of a loss of pressure and the test piece for any signs of leakage for the specified time or until failure as follows:a) t
41、erminate the test and record the observations if during the period the pressure cannot be maintained and the losses occurred at the joint, or within a distance of one pipe diameter from the joint under test;b) repeat the test if the pipe(s) fail(s) at a position further than one diameter from the jo
42、int(s) under test.If air is used as test medium, leakage can be detected with leak detection fluid.7 Test reportThe test report shall include the following information:a) a reference to this International Standard (e.g. ISO 3458) and to the referring International standard;b) the nominal pressure cl
43、ass or S series of the components e.g. fitting(s), pipe comprising the joint(s) under test;c) all details necessary for identification of the test pieces, including the nominal size of the pipes and fittings used to produce the test pieces, the type of material and the manufacturers code; ISO 2015 A
44、ll rights reserved 3BS EN ISO 3458:2015ISO 3458:2015(E)d) the free length;e) the test medium;f) the test period;g) the test pressure;h) the test temperature;i) the information on the leak tightness of the joint including the pressure at which a leakage occurred (if any);j) any factors which may have
45、 affected the results, such as any incidents or any operating details not specified in this International Standard;k) the date of test.4 ISO 2015 All rights reservedBS EN ISO 3458:2015ISO 3458:2015(E)Annex A (normative) Test parametersThe test parameters in Table A.1 shall be used, if applicable.Tab
46、le A.1 Test ParametersTest mediumTest duration hTest temperature CTest pressure MPaWater 1 20Three times the nominal design pressure of the lowest rated component in the assemblyThe free length, l0, of each pipe shall be at least three times the nominal outside diameter, dn, with a minimum of 250 mm
47、.If, for pipes with dngreater than 315 mm, the specified minimum free length cannot be achieved, a shorter free length may be chosen with a minimum of two times dn, unless otherwise specified in the referring International Standard or specification. ISO 2015 All rights reserved 5This page deliberate
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