1、BSI Standards PublicationBS EN ISO 13844:2015Plastics piping systems Elastomeric-sealing-ring-typesocket joints for use withplastic pressure pipes Testmethod for leaktightnessunder negative pressure,angular deflection anddeformationBS EN ISO 13844:2015 BRITISH STANDARDNational forewordThis British S
2、tandard is the UK implementation of EN ISO 13844:2015. It supersedes BS EN ISO 13844:2000 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee PRI/88/4, Test Methods - Plastic Piping.A list of organizations represented on this committee can be obtained on r
3、equest to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2015.Published by BSI Standards Limited 2015ISBN 978 0 580 81752 6ICS 23.040.60Compliance with a Briti
4、sh Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 March 2015.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NOR
5、M EN ISO 13844 March 2015 ICS 91.140.60; 23.040.20 Supersedes EN ISO 13844:2000English Version Plastics piping systems - Elastomeric-sealing-ring-type socket joints for use with plastic pressure pipes - Test method for leaktightness under negative pressure, angular deflection and deformation (ISO 13
6、844:2015) Systmes de canalisations en plastiques - Assemblages par emboture bague dtanchit en lastomre pour les tubes sous pression plastiques - Mthode dessai pour ltanchit sous pression ngative, dviation angulaire et dformation (ISO 13844:2015) Kunststoff-Rohrleitungssysteme - Steckmuffenverbindung
7、en mit elastomeren Dichtringen fr Kunststoffrohre - Prfverfahren fr die Dichtheit bei Unterdruck, Abwinkelung und Verformung (ISO 13844:2015) This European Standard was approved by CEN on 24 January 2015. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the c
8、onditions 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 ex
9、ists 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 s
10、tandards 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,
11、 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 means res
12、erved worldwide for CEN national Members. Ref. No. EN ISO 13844:2015 EEN ISO 13844:2015 (E) 3 Foreword This document (EN ISO 13844:2015) 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 1
13、55 “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 2015, and conflicting national standards shall b
14、e withdrawn at the latest by September 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 supersedes EN ISO 13844:200
15、0. 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 Macedonia, France,
16、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 13844:2015 has been approved by CEN as EN ISO 138
17、44:2015 without any modification. BS EN ISO 13844:2015BS EN ISO 13844:2015ISO 13844:2015(E)Contents PageForeword iv1 Scope . 12 Principle 13 Test parameters and requirements 14 Apparatus . 15 Test pieces . 26 Procedure. 37 Test report . 3Annex A (normative) Test parameters . 5 ISO 2015 All rights re
18、served iiiBS EN ISO 13844:2015ISO 13844:2015(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 mem
19、ber 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 El
20、ectrotechnical 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
21、 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 h
22、eld 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 informat
23、ion given 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 f
24、ollowing URL: Foreword - Supplementary informationThe 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 plastic materials and their accessories Test methods an
25、d basic specifications.This second edition cancels and replaces the first edition (ISO 13844:2000) 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 standards o
26、n test methods.The modifications are the following: no material is mentioned; test parameters are omitted, although the original test parameters can be found in Annex A; editorial changes have been introduced.iv ISO 2015 All rights reservedBS EN ISO 13844:2015Plastics piping systems Elastomeric-seal
27、ing-ring-type socket joints for use with plastic pressure pipes Test method for leaktightness under negative pressure, angular deflection and deformationWARNING Persons using this International Standard should be familiar with normal laboratory practice, if applicable. The use of this International
28、Standard may involve hazardous materials, operations, and equipment. This International Standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this International Standard to establish appropriate safety and health pra
29、ctices and determine the applicability of regulatory limitations prior to use.1 ScopeThis International Standard specifies a method for testing the leak tightness under negative pressure, angular deflection, and deformation of assembled joints between elastomeric-sealing-ring-type sockets made of pl
30、astic or metal and plastic pressure pipes.2 PrincipleA test piece consisting of a plastic pipe mounted into a socket is exposed within a specified temperature range to two specified negative internal pressures for a specified test period, while the pipe is being subjected to an angular deflection in
31、 the socket and to deformation. During the test, the test piece is monitored for signs of leakage.3 Test parameters and requirementsThe test parameters of the standard which refers to this test standard shall be used and the requirements shall be fulfilled. If one or more parameters are not given in
32、 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 standard:a) test medium;b) test pressure (bar or MPa);c) test duration (h);d) test temperature (C);e) free length (mm).4 Apparatus4.1 F
33、ramework, comprising at least two fixing devices, one of which is movable, to allow angular deflection to be applied to the test joint, while a negative air pressure (partial vacuum) is being applied.4.2 Vacuum gauge, having an accuracy of 1 % at the measured values.INTERNATIONAL STANDARD ISO 13844:
34、2015(E) ISO 2015 All rights reserved 1BS EN ISO 13844:2015ISO 13844:2015(E)4.3 Equipment, designed to produce a deforming force on the pipe spigot at a specified distance from the mouth of the socket. A typical arrangement is shown in Figure 1.4.4 Vacuum source (pump), capable of producing in the te
35、st piece the partial vacuum specified in the referring International Standard (see 6.6).4.5 Isolation valve, between the test piece and the vacuum pump (see 6.6).Key1 starting point for measuring and adjusting the angle of deflection 2 for pipes where deformation is required by the referring Interna
36、tional Standard, a pair of clamps to deform the pipe (see 6.2)L free length of the pipe between the socket mouth and the end-sealdnnominal outside diameter of the pipeFigure 1 Typical test arrangementNOTE The deflection, f, and the angle of deflection, , are related by the equation f = Lsin. For = 2
37、, the deflection is f = 0,035 L.5 Test piecesThe test piece shall comprise an assembly of a plastic pipe section mounted into the socket to be tested.The fittings and pipes shall not be tested until 24 h after their production. For practical reasons, the manufacturer may wait a shorter time before t
38、esting. In case of dispute, a duration of 24 h shall apply.The assembly shall be carried out in accordance with the socket manufacturers instructions.A pipe of the same nominal pressure (PN) or the same pipe series S as that of the socket shall be used for the test.NOTE The mean outside diameter, de
39、m, of the pipe should preferably conform to the minimum specified value, and the socket dimensions (mean inside diameter, dim, and the diameter of the groove for housing the sealing ring) should preferably conform to the maximum values stated by the manufacturer, in order to have dimensions as close
40、 as possible to the extreme limits of their relevant tolerances.2 ISO 2015 All rights reservedBS EN ISO 13844:2015ISO 13844:2015(E)6 Procedure6.1 Secure the socket, without any deformation, to the solid framework and align the pipe section with the axis of the socket.6.2 Apply the deformation to the
41、 pipe in the vertical plane, as required by the referring International Standard, using a pair of 100 mm wide clamps placed at a distance of 0,5dnfrom the mouth of the test socket. Measure the deformation at the face of the clamp adjacent to the mouth of the socket.6.3 For pipes where no deformation
42、 is required by the referring International Standard, carry out procedures given in 6.4 to 6.6 without applying the deforming force.6.4 By inclining the pipe in the test apparatus, determine the free angle of deflection, free, which the joint can tolerate without forcing.If the free angle of deflect
43、ion is greater or equal to the required one, firmly anchor the pipe to maintain the deflected pipe in this position for the remainder of the test.If the free angle of deflection is less than the required one, carry out the test at the required deflection measured at the starting point (see Figure 1)
44、, by forcing the pipe to that position.6.5 Carry out the procedure of 6.6 under the following conditions:a) with the angular deflection applied in the vertical plane while constantly inspecting for and recording any signs of leakage;b) with the specified temperature constant to within 2 C.6.6 Apply
45、a negative pressure as specified in the referring International Standard to the test piece until a constant gauge pressure is achieved.Isolate the vacuum pump from the test piece, monitor the pressure for the specified test duration, and record any change in the negative pressure. If the change in n
46、egative pressure exceeds 0,05 bar (0,005 MPa), stop the test.Unless the change in negative pressure was not more than 0,05 bar (0,005 MPa), apply a further negative pressure as specified in the referring International Standard to the test piece until a second constant gauge pressure is achieved.Agai
47、n, isolate the vacuum pump from the test piece, monitor the pressure for the second specified test duration and record any change in negative pressure.7 Test reportThe test report shall include the following information:a) a reference to this International Standard (i.e. ISO 13844:2014) and the refe
48、rring International Standard;b) the nominal pressure class 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
49、type of material, and the manufacturers code;d) the angle of deflection, , used for the test;e) the test temperature;f) the test duration; ISO 2015 All rights reserved 3BS EN ISO 13844:2015ISO 13844:2015(E)g) the test procedure;h) the amount of deformation, if applicable (see 6.2 and 6.3);i) information on the leak tightness of the joint including the pressure at which a leakage occurred (if any);j) any factors which may have affected the results, such as any incidents or any operating details not specified in t
