BS EN ISO 13844-2000 塑料管道系统.与未增塑聚氯乙烯管一起使用的未增塑聚氯乙烯弹性密封环式套筒接合.负压下的密封试验方法.pdf

| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN ISO 138442000 BS 2782-11 1123D2000 The European Standard EN ISO 138442000 has the status of a British Standard ICS 23.040.60 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Plastics piping systems Elastomeric-sealing- ring-type socket joints of unplasticized poly vinyl chloridePVC-U for use with PVC-U pipes Test for leaktightness under negative pressure Licensed Copy Institute Of Technology Tallaght, Institute of Technology, Sun Oct 08 002541 BST 2006, Uncontrolled Copy, c BSI This British Standard, having been prepared under the direction of the Sector Committee for Materials and Chemicals, was published under the authority of the Standards Committee and comes into effect on 15 September 2000  BSI 09-2000 ISBN 0 580 36250 7 BS EN ISO 138442000 Amendments issued since publication Amd. No.DateComments National foreword This British Standard is the official English language version of EN ISO 138442000. It is identical with ISO 138442000. The UK participation in its preparation was entrusted by Technical Committee PRI/88, Plastics piping systems and components, to Subcommittee PRI/88/4, s of test for plastics piping systems and components, which has the responsibility to 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. A list of organizations represented on this subcommittee can be obtained on request to its secretary. It is incorporated into BS 2782-11, s of testing plastics Part 11 Thermoplastics pipes, fittings and valves, as 1123D2000, for association with related test s for plastics materials and plastics piping components. According to its scope, this is applicable to elastomeric-sealing-ring-type socket joints coning to EN 1452-2 or ISO 4422-2 as applicable, for water supply. Technically, this tests such joints for resistance to penetration inwards by a gas air, while the joint is subject to angular deflection. No existing British Standard is thereby superseded by this British Standard. For clarification, if use is considered for other applications, the responsible UK committee draws attention to the concurrent existence of EN 9111995, Plastics piping systems Elastomeric sealing ring type joints and mechanical joints for thermoplastics pressure piping Test for leaktightness under external hydrostatic pressure [implemented as BS EN 9111996; BS 2782-11 1123W1996]. That tests joints for resistance to penetration inwards by a liquid water, without involving any deflection. For the purposes of clause 1, the components referred to as double sockets are frequently known in the UK as couplers. Cross-references Attention is drawn to the fact that CEN and CENELEC Standards normally include an annex which lists normative references to international publications with their corresponding European publications. The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled International Standards Correspondence Index, or by using the Find facility of the BSI Standards Electronic Catalogue. Warning This British Standard, which is identical with EN ISO 13844 2000, does not necessarily detail all the precautions necessary to meet the requirements of the Health and Safety at Work etc. Act 1974 and subsequent legislation. Attention should be paid to any appropriate safety precautions and the should be operated only by trained personnel. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN ISO title page, pages 2 to 6, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Licensed Copy Institute Of Technology Tallaght, Institute of Technology, Sun Oct 08 002541 BST 2006, Uncontrolled Copy, c BSI w w w . b z f x w . c o m EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 13844 April 2000 ICS 23.040.60 English version Plastics piping systems - Elastomeric-sealing-ring-type socket joints of unplasticized polyvinyl chloride PVC-U for use with PVC-U pipes - Test for leaktightness under negative pressure ISO 138442000 Systmes de canalisations en plastiques - Embotures avec bagues dtanchit en lastomres en polychlorure de vinyle non plastifi PVC-U pour les tubes PVC-U - Mthode dessai dtanchit sous pression ngative ISO 138442000 Kunststoff-Rohrleitungssysteme - Steckmuffenverbindungen aus weichmacherfreiem Polyvinylchlorid PVC-U mit elastomeren Dichtringen fr PVC-U-Rohre - Prfverfahren fr die Dichtheit bei Unterdruck ISO 138442000 This European Standard was approved by CEN on 3 February 2000. 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 Central Secretariat 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 Central Secretariat 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, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Central Secretariat rue de Stassart, 36 B-1050 Brussels 2000 CENAll rights of exploitation in any and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 138442000 E Licensed Copy Institute Of Technology Tallaght, Institute of Technology, Sun Oct 08 002541 BST 2006, Uncontrolled Copy, c BSI w w w . b z f x w . c o m Page 2 EN ISO 138442000 Foreword The text of EN ISO 138442000 has been prepared by Technical Committee CEN/TC 155 “Plastics piping systems and ducting systems “, the secretariat of which is held by NNI, in collaboration with Technical Committee ISO/TC 138 “Plastics pipes, fittings and valves for the transport of fluids“. 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 2000, and conflicting national standards shall be withdrawn at the latest by October 2000. 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, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. This standard is based on a working draft, prepared by the International Organization for Standardization ISO. It is an editorial revision of the text concerned ISO/TC138/SC2 N 672 revised without modification of the technical content. The material-dependent parameters and/or perance requirements are incorporated in the System Standards concerned. This standard is one of a series of standards on test s which support System Standards for plastics piping systems and ducting systems. Licensed Copy Institute Of Technology Tallaght, Institute of Technology, Sun Oct 08 002541 BST 2006, Uncontrolled Copy, c BSI w w w . b z f x w . c o m Page 3 EN ISO 138442000 1 Scope This standard specifies a for testing the leaktightness of - single sockets of unplasticized polyvinyl chloride PVC-U; - double sockets of PVC-U; - sockets of PVC-U fittings, with elastomeric sealing rings. It is applicable to elastomeric-sealing-ring-type socket joints coning to EN 1452-2 or ISO 4422-2, intended for use with PVC-U pressure pipes. 2 Normative references This 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 revision of, any of these publications apply to this standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. EN 1452-2, Plastics piping systems for water supply Unplasticized polyvinyl chloride PVC-U Part 2 Pipes or ISO 4422-2, Pipes and fittings made of unplasticized polyvinyl chloride PVC-U for water supply Specifications Part 2 Pipes with or without integral sockets, as applicable see the note in clause 5. 3 Principle A test piece consisting of a PVC-U pipe mounted into a PVC-U 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 the socket and to deation. During the test the test piece is monitored for signs of leakage. 4 Apparatus 4.1 Apparatus, 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. 4.3 Equipment, designed to produce a deing force on the pipe spigot at a specified distance from the mouth of the socket. A typical arrangement is shown in Figure 1. Licensed Copy Institute Of Technology Tallaght, Institute of Technology, Sun Oct 08 002541 BST 2006, Uncontrolled Copy, c BSI w w w . b z f x w . c o m Page 4 EN ISO 138442000 Lis the free length of the pipe between the socket mouth and the end-seal L 5dn, with Lmin 500 mm and Lmax 1500 mm dnis the nominal outside diameter of the pipe 1Starting point for measuring and adjusting the angle of deflection 2 2For pipes of series S 16 and greater, a pair of clamps to de the pipe see 6.2 NOTE The deflection, f, and the angle of deflection, , are related by the equation f Lsin . For 2, the deflection is f 0,035L. Figure 1 Typical test arrangement 4.4 Vacuum pump, capable of maintaining the two required levels of negative pressure see 6.6. 4.5 Isolation valve, between the test piece and the vacuum pump see 6.6. 5 Test piece The test piece shall comprise an assembly of a PVC-U pipe section coning to either EN 1452-2 or ISO 4422-2, as applicable, and mounted into the PVC-U socket to be tested. NOTE When the test is conducted in accordance with EN ISO 13844, EN 1452-2 is applicable, whereas ISO 4422-2 is applicable when the test is conducted in accordance with ISO 13844. The assembly shall be carried out in accordance with the socket manufacturers instructions. Pipes of the same nominal pressure PN or the same pipe series S as that of the socket shall be used for the test. For the applicable size, the mean outside diameter of the pipe shall be the smallest available within the tolerance band and the socket dimensions mean inside diameter and the diameter of the groove for housing the sealing ring shall be the largest available coning to the maximum values stated by the manufacturer. The length of the pipe section shall be such that the free length, L, between the socket mouth and the end-seal is equal to five times the nominal outside diameter of the pipe with a minimum of 500 mm and a maximum of 1500 mm. 6 Procedure 6.1 Secure the socket, without any deation, to the immovable fixing device of the apparatus so that the socket axis is horizontal and adjust the pipe section in line with the axis of the socket. Licensed Copy Institute Of Technology Tallaght, Institute of Technology, Sun Oct 08 002541 BST 2006, Uncontrolled Copy, c BSI w w w . b z f x w . c o m Page 5 EN ISO 138442000 6.2 For pipes of series S 16 and greater i.e. thinner walls, de the pipe in the vertical plane by 5 of the dn using a pair of 100 mm wide clamps placed at a distance of 0,5dn from the mouth of the test socket. Measure the deation at the face of the clamp adjacent to the mouth of the socket. 6.3 For pipes of series less than S 16 i.e. thicker walls, carry out procedures given in 6.4 to 6.6 without applying the deing force. 6.4 By inclining the pipe in the test apparatus, determine the free angle of deflection, , which the joint can tolerate without forcing. If 2, firmly anchor the pipe to maintain the deflected pipe in this position for the remainder of the test. If 2, carry out the test at a deflection of 2 measured at the starting point see Figure 1, 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 ambient temperature constant to within 2 C and within the range of 15 C to 25 C. 6.6 Apply a negative pressure to the test piece until a constant gauge pressure of -0,1 0,02 bar [-0,01 0,002 MPa] is achieved see Figure 2. Isolate the vacuum pump from the test piece, monitor the pressure for 15 min and record any change in the negative pressure. If the change in negative pressure exceeds 0,05 bar 0,005 MPa, stop the test. If the change in negative pressure was not more than 0,05 bar [0,005 MPa], apply a further negative pressure to the test piece until a constant gauge pressure of -0,8 0,02 bar [-0,08 0,002 MPa] is achieved. Again, isolate the vacuum pump from the test piece, monitor the pressure for a further 15 min and record any change in negative pressure. NOTE The first negative pressure is approximately 0,9 bar absolute. The second negative pressure is approximately 0,2 bar absolute. Licensed Copy Institute Of Technology Tallaght, Institute of Technology, Sun Oct 0