BS ISO 13259-2010 Thermoplastics piping systems for underground non-pressure applications - Test method for leaktightness of elastomeric sealing ring type joints《非承压地下用热塑管路系统 弹性材料密.pdf

1、BS ISO13259:2010ICS 23.040.20; 91.140.80NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDThermoplasticspiping systems forunderground non-pressure applications Test method forleaktightness ofelastomeric sealingring type jointsThis British Standardwas published und

2、er theauthority of the StandardsPolicy and StrategyCommittee on 30 June2010 BSI 2010ISBN 978 0 580 66738 1Amendments/corrigenda issued since publicationDate CommentsBS ISO 13259:2010National forewordThis British Standard is the UK implementation of ISO 13259:2010.The UK participation in its preparat

3、ion was entrusted to TechnicalCommittee PRI/88/1, Plastics piping for non-pressure applications.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are responsib

4、le for its correct application.Compliance with a British Standard cannot confer immunityfrom legal obligations.BS ISO 13259:2010Reference numberISO 13259:2010(E)ISO 2010INTERNATIONAL STANDARD ISO13259First edition2010-05-15Thermoplastics piping systems for underground non-pressure applications Test

5、method for leaktightness of elastomeric sealing ring type joints Systmes de canalisations thermoplastiques pour applications enterres sans pression Mthodes dessai dtanchit des assemblages bague dtanchit en lastomre BS ISO 13259:2010ISO 13259:2010(E) PDF disclaimer This PDF file may contain embedded

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10、. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2010 All rights reservedBS ISO 13259:2010ISO 13259:2010(E) ISO 2010 All rights reserved iiiForeword ISO (the International Org

11、anization 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 establi

12、shed 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 standardizatio

13、n. 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.

14、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 pat

15、ent rights. ISO 13259 was prepared by Technical Committee ISO/TC 138, Plastics pipes, fittings and valves for the transport of fluids, Subcommittee SC 1, Plastics pipes and fittings for soil, waste and drainage (including land drainage). BS ISO 13259:2010BS ISO 13259:2010INTERNATIONAL STANDARD ISO 1

16、3259:2010(E) ISO 2010 All rights reserved 1Thermoplastics piping systems for underground non-pressure applications Test method for leaktightness of elastomeric sealing ring type joints 1 Scope This International Standard specifies three basic test pressures for determining the leaktightness of elast

17、omeric sealing ring type joints for buried thermoplastics non-pressure piping systems. Unless otherwise specified in the referring standard, the methods use the following pressures: p1: internal negative air pressure (partial vacuum); p2: low internal hydrostatic pressure; p3: higher internal hydros

18、tatic pressure. It also describes the following four conditions under which the test can be executed: a) A: without any additional diametric or angular deflection; b) B: with diametric deflection; c) C: with angular deflection; d) D: with simultaneous angular and diametric deflection. These conditio

19、ns can be applied individually or in combination. The applicable selection of the method(s) and the condition(s) should be specified in the referring standard. 2 Principle A test piece assembled from pipes and/or fittings is subjected to a specific initial internal negative air pressure, p1followed

20、by a low specific initial internal hydrostatic pressure, p2, and a higher internal hydrostatic pressure, p3. During testing, the joint may be subjected to diametric or angular deflection(s). The referring product standard shall specify which of the test pressures and deflection conditions shall be c

21、arried out. Each pressure is maintained for a specific period, during which time the joint is monitored for leakage (see Clause 6). It is assumed that the following test parameters are set by the referring standard: a) the test pressure(s), p1see item d) of 6.1, p2see item f) of 6.1 and p3see item g

22、) of 6.1, as applicable, and the percentage of loss of partial vacuum see item d) of 6.1; b) the required diametric and angular deflections and their combination with each other and/or the test pressure(s). BS ISO 13259:2010ISO 13259:2010(E) 2 ISO 2010 All rights reserved3 Apparatus 3.1 General The

23、apparatus shall consist of a jig or any other arrangement capable of: a) applying the specified diametric and angular deflection; b) applying the specified test pressure(s), positive or negative; c) maintaining the test assembly in the required position throughout the test; d) resisting the forces r

24、esulting from the mass of the water in the test assembly and from the applied hydrostatic test pressure(s) during the test period. The apparatus shall not otherwise support the joint against the internal test pressure. A typical arrangement, allowing angular and diametric deflection, is shown in Fig

25、ure 1. 3.2 Apparatus The apparatus shall include the following items, which all shall be capable of resisting the forces and pressures generated during the test. 3.2.1 End sealing devices, having a size and using a sealing method appropriate to seal the non-jointed ends of the test assembly. The dev

26、ices shall be restrained in a manner that does not exert longitudinal forces on the joint at positive pressures. 3.2.2 Hydrostatic pressure source, connected to one of the sealing devices, or to the test piece, and capable of applying and maintaining the specified pressure see items f) and g) of 6.1

27、. 3.2.3 Negative air pressure source, connected to one of the sealing devices or to the test piece, and capable of applying and maintaining the specified internal negative air pressure for the specified time see item d) of 6.1. 3.2.4 Arrangement, capable of venting air from the assembly. 3.2.5 Press

28、ure measuring devices, capable of checking conformity to the specified test pressure (see items d), f) and g) of 6.1. When testing with diametric deflection is required, the items in 3.2.6 and 3.2.7 shall also be included. 3.2.6 Mechanical or hydraulic device, capable of applying the necessary diame

29、tric deflection to the spigot see item b) of 6.1 and acting on a beam which is free to move in the vertical plane square to the axis of the pipe. For pipes with a diameter equal to or greater than 400 mm, each beam can be elliptically shaped to suit the expected shape of the pipe when deflected as r

30、equired, see Figure 4. The length of the beam or the curved part of the beam shall be greater than the contact area with the deflected spigot. The following width, b1(see Figure 1), shall depend upon the external diameter, de, of the pipe: b1= 100 mm for deu 710 mm; b1= 150 mm for 710 mm 1 000 mm. 3

31、.2.7 Mechanical or hydraulic device, capable of applying the necessary diametric deflection to the socket see item b) of 6.1 and acting on a beam which is free to move in the vertical plane square to the axis of the socket. The length of the beam or the curved part of the beam shall be greater than

32、the contact area with the deflected socket. BS ISO 13259:2010ISO 13259:2010(E) ISO 2010 All rights reserved 3For pipes with a diameter equal to or greater than 400 mm, each beam may be elliptically shaped to suit the expected shape of the socket when deflected as required, see Figure 4. The followin

33、g width, b2, shall depend upon the external diameter, de, of the pipe: b2= 30 mm for deu 110 mm; b2= 40 mm for 110 mm 315 mm. When there is a risk that the stiffening elements (profiles) of a structured wall pipe or socket will deflect more than 0,1 times the profile height, the clamps shall be modi

34、fied such that they come into contact with the pipe wall between the profiles when the profile is deflected to between 0,9 times and 0,95 times the profile height (see Figure 2). Such modifications shall be made from wood or less flexible materials. Dimensions in millimetres Key 1 vacuum or pressure

35、 gauge 2 adjustable support 3 pipe or fitting with spigot end 4 elliptical beam, when applicable 5 socket support 6 pipe or fitting with socket totangular deflection applied b1, b2width of clamp (see 3.2.6 and 3.2.7) F1, F2compressive force L length of spigot-ended pipe or fitting, where L W deor L

36、W 1 000, whichever is the greater, in millimetres L1distance between socket mouth and clamp aConnection to pressure source. Figure 1 Typical arrangement for applying diametric distortion and angular deflection BS ISO 13259:2010ISO 13259:2010(E) 4 ISO 2010 All rights reservedKey 1 modified loading pl

37、ate hpconstruction height Hpprofile height of the loading plate; 0,9hpu Hpu 0,95hpFigure 2 Example of modified loading plate 4 Test pieces The test piece shall comprise an assembly of (a) pipe section(s) and/or fitting(s) including at least one elastomeric sealing ring joint. The joint to be tested

38、shall be assembled in accordance with the manufacturers instructions, where available. The length of the test pieces in pipe form shall be as specified in Figure 1. The same test assembly shall be used for the entire specified test regime. NOTE To reduce the volume of water needed a sealed pipe or m

39、andrel can be located within the test piece provided it is 100 % tight to the test pressures applied, and is not of a shape that can provide support against possible deformation during the test. When a fitting or any other ancillary component is to be tested, the appropriate end of the test piece sh

40、own in Figure 1 is to be replaced by that component. The component is fixed to the test rig and plugged in its open end(s) as appropriate for its design. 5 Test temperature When testing with internal hydrostatic pressure using water, the test temperature shall be (19 9) C. When testing with internal

41、 partial vacuum, the test temperature shall be in the range of (23 5) C and the temperature variation shall not exceed 2 C during the testing. 6 Procedure 6.1 General Carry out the following procedures at the specified temperatures. a) Mount the test piece with sealed ends in the apparatus. b) When

42、applicable, apply the specified movement of the loading beams for diametric deflection of the spigot and/or socket end(s), as described in 6.2. BS ISO 13259:2010ISO 13259:2010(E) ISO 2010 All rights reserved 5c) When applicable, apply the specified angular deflection to the joint. Unless otherwise s

43、pecified in the referring standard, the applied angular deflection, , shall be the following: = 2 for dnu 315 mm; = 1,5 for 315 mm 630 mm. Tolerance on all deflections: 0,20+. If a socket is designed to take up an angular deflection, , the total angular deflection shall be the sum of the design angl

44、e , as declared by the manufacturer, and . Maintain these settings throughout the testing. d) When applicable, apply the specified negative air pressure (partial vacuum), p1, gradually over a period of not less than 5 min. Unless otherwise specified in the referring standard, p1shall be 0,3 bar1) 5

45、%. Maintain the negative air pressure for a period of not less than 5 min, in order to let the test assembly stabilize. Close the connection between the test piece and the negative air pressure source. Measure and record the internal negative pressure. After 15 min, measure and record the internal n

46、egative pressure again. Calculate the loss of partial vacuum and record whether or not it exceeds the specified percentage of p1. Unless otherwise specified in the referring standard, the percentage shall be 10 %. e) When applicable, fill the test assembly with water while bleeding off the air. To e

47、nsure temperature equalization, leave it for no less than 5 min for pipes of nominal diameter, dn, less than 400 mm and no less than 15 min for larger sizes. f) When applicable, raise the hydrostatic pressure gradually over a period of not less than 5 min to the specified test pressure, p2, and main

48、tain that pressure for at least 15 min, monitor the test piece for, and record any leakage. Unless otherwise specified in the referring standard, p2shall be 0,05 bar 10 %. g) When applicable, raise the hydrostatic pressure gradually over a period of no less than 5 min to the specified test pressure,

49、 p3, and maintain that pressure for at least 15 min, monitor the test piece for, and record any leakage. Unless otherwise specified in the referring standard, p3shall be between 0,5 bar and (0,5 bar + 10 %). h) If applicable, start from b) with another set of required test parameters after an appropriate rest period which, in case of dispute, shall be at least 24 h. 1) 1 bar = 0,1 MPa = 105Pa; 1 MPa = 1 N/mm2. BS ISO 13259:2010ISO 13259:2010(E) 6 ISO 2010 All rights rese