1、STD-BSI BS EN IS0 L3783-ENGL 1978 I lb24bb9 Ob873b0 277 BRITISH STANDARD Plastics piping systems - Unplasticized poly( vinyl chloride) (PVC-U) end-load-bearing double-socket joints - Test method for leaktightness and strength while subjected to bending and internal pressure The European Standard EN
2、IS0 13783 : 1997 has the status of a British standasd ICs 23.040.60 BS EN IS0 13783 : 1998 BS 2782 : Part 11 : Method 1123C : 1998 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGKI LAW STD-BSI BS EN IS0 13783-ENGL 1798 Lb2qbbS Ob873bL LO5 BS EN IS0 13783 : 1998 This British Standard
3、, having been prepared under the direction of the Sector Board for Materials and Chemicals, was published under the authority of the Standards Board and comes into effect on 15 February 1998 O BSI 1998 National foreword This British Standard is the English language version of EN IS0 13783 : 1997. It
4、 is identical with IS0 13783 : 1997. This international standard is incorporated into BS 2782 Methods of testing plastics : Part 11 Themnoplastics pipes, fittings and vulves, as Method 1123C, for association with related test methods for plastics materials and plastics piping components. The UK part
5、icipation in its preparation was entrusted to Technical Committee PRY61, Plastics piping systems and components, which has the responsibility to: - aid enquirers to understand the text; - present to the responsible internationaUECuropean committee any enquiries on the interpretation, or proposals fo
6、r change, and keep the UK interests informed - monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to its secretaxy. To assist the use of this standard, the UK Technical Committee draw
7、s attention to the fact that generally in standards for plastics pipes for pressure applications, the value for the nominal pressure (PN) is expressed in bars, e.g. as given in table 1, and the pressures for test conditions are also expressed in bars, as in 4.2 and in figure 3. In 6.1 only, however,
8、 for the calculation of Fe the value to be used for pi is the value in megapascals (RiPa) of the internal pressure corresponding to the nominal pressure, and hence O. 1 times PN (as stated in 6.1). NOTE. 1 bar = lo5 N/m2 = 0.1 MPa Cross-references The British Standards which implement international
9、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 note. This British Standard, which is identi
10、cal with IS0 13783 : 1997, does not necessarily detail all the precautions necessary to meet the requirements of the Health and Safety at Work etc. Act 1974. Attention should be paid to any appropriate sdety precautions and the method should only be operated by trained personnel. Compliance with a B
11、ritish 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 IS0 title page, pages 2 to 8, an inside back cover and a back cover. Amendments issued since publication I Te* affected Amd.No. Date I I IS
12、BN O 580 29133 2 STD.BSI BS EN IS0 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN IS0 13783 September 1997 ICs 23.040.60 Descriptors: see IS0 document English version Plastics piping systems - Unplasticized poly(vinyi chloride) (PVC-U) end-load-bearing double-socket joints - Test method for le
13、aktightness and strength while subjected to bending and internal pressure (IS0 1 3783:i 997) Systmes de canalisations en plastiques - Double manchon en poly(ch1orure de vinyle) non plastifi (PVC-U) raoistant la traction axiale - Mthode dessai dtanchit et de la rsistance en traction, avec sollicitati
14、on en flexion et pression interne (Is0 13783:1997) Kunststoff-Rohrleiturgssysteme - Zugfeste Doppelnrrffenverbinduylen aus weichmacherfreiem Poly(vinylch1orid) (PVC-U) - Prfverfahren fr die Dichtheit und mechanische Festigkeit unter Biegung und Innendruck (Is0 13783:1997 * * ZB This European Standar
15、d was approved by CEM on 1997-06-28. CEN mcnibers 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 n
16、ational standards my be obtained on application to the Central Secretariat or to any CEM nieniber. The European standards exist in three official versions (English, French, German). A version in any other language niade by translation under the responsibility of a CEM nember into its own language an
17、d notified to the Central Secretariat has the same status as the official versions. CER members are the national standards bodies of Austria, Betgiun, Czech Republic, Owmark, Fintand, France, Germany, Greece, Iceland, Ireland, Italy, Luxenibourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzer
18、land and United Kingdom. CEN European Comnittee for Standardization Comit Europen de Normelisation Europisches Komitee fr Normng Central Secretariat: rue de Stassert,36 8-1050 Brussels 0 1997 CEN - Alt rights of exploitation in any form and by any means reserved worldwide for CEN national Members. R
19、ef. No. EN IS0 13783:1997 E STDmBSI BS EN IS0 LI783-ENGL 1998 Lb2ibbS Ob873b3 T88 Page 2 EN IS0 13783 : 1997 Foreword The text of EN IS0 13783:1997 has been prepared by Technical Committee CEN/TC 155 “Plastics piping systems and ducting systems“, the secretariat of which is held by NNI, in collabora
20、tion with Technical committee ISO/TC 138 “Plastics pipes, fittings and valves for the transport of fluids“. The material-dependent parameters and/or performance requirements are incorporated in the System Standard(s) concerned. This standard is one of a series of standards on test methods which supp
21、ort System Standards for plastics piping systems and ducting systems. 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 March 1998, and conflicting national standards shall be withdrawn at the lates
22、t by March 1998. According to the CENKENELEC 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, Netherla
23、nds, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. STD.BS1 BS EN IS0 13783-ENGL 1998 LbZLibbS b73b4 7Lq Page 3 EN IS0 13783 : 1997 1 Scope This standard specifies a method for testing, while subjected to bending, the leaktightness and strength of assembled end-load-bearing dou
24、ble-socket joints of unplasticized poly(vnyl chloride) (PVC-U) which allow a maximum deflection of 3O It is applicable to double-socket couplers provided with elastomeric sealing rings and locking rings and intended for use with PVC-U pressure pipes (see figure 1). The method specifies the intemal p
25、ressure, the method of calculation for the additional bending force and the procedure for the bending test. r -4 -5 4 -+ 1 PVC-U coupling 2 Sealing flng 3 Locking device 4 Solvent cemented PVC-U sleeve 5 PVC-Upipe Figure 1 : Example of end-load-bearing double-socket coupler 2 Normative reference Thi
26、s 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 revisions of any of these publications ap
27、ply to this Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. IS0 40651996 Thermoplastics pipes - Universal wall thickness table O BSI 1998 STD-BSI BS EN IS0 13783-ENGL 1778 1b2LibbS Ob73b5 850 Page 4 EN
28、IS0 13783 : 1997 3 Principle A test piece, consisting of PVC-U pipes mounted into a PVC-U double-socket coupler, is exposed to a specific cycle of internal hydrostatic pressures for specific test periods and at a specific temperature while the assembly is simultaneously subjected to a lateral bendin
29、g force. 4 Apparatus 4.1 A pressure control device, connected to the test piece and capable of applying a variable internal hydrostatic pressure of at least 2,s times the nominal pressure (PN) of the PVC-U pipe and joint assembly. 4.2 A vacuum pump, capable of applying a negative internal pressure o
30、f at least -0.8 bar (-0,08 MPa). 4.3 A loading jig, capable of applying a horizontal bending force to an assembled test piece while it is subjected to an internal hydrostatic pressure. The jig includes vertical supports equally spaced at 5dn on either side of the axis of the horizontal force to rest
31、rain the test piece so that the horizontal force will induce bending, and horizontal supports beneath the test piece, to enable horizontal axial alignment of the test piece components. The supports have a low friction surface, to minimise inhibition of axial bending. An example of a test arrangement
32、 is shown in figure 2. The length of the pipe sections and the total length of the test pieces shall conform to the values given in figure 2. 4.4 Gauges, for measuring the internal hydrostatic pressure and the applied bending force, each having an accuracy of 11 YO at the measured values. 5 Test pie
33、ce The test piece shall consist of two PVC-U pipe sections mounted into the PVC-U end-load-bearing double-socket coupler to be tested. The assembly shall be carried out in accordance with the instructions of the manufacturer of the double-socket coupler. The pipes and the double-socket coupler shall
34、 be of the same nominal pressure. NOTE: The mean outside diameter of the pipes should preferably conform to the minimum specified value, and the socket dimensions (mean inside diameter and the diameter of the groove for housing the sealing ring) should preferably conform to the maximum allowable val
35、ues stated by the manufacturer in order to have dimensions as close as possible to the extreme limits of their relevant tolerances. O BSI 1998 STD.BSI BS EN IS0 13783-ENGL 1998 D lb2qbb Ob873bb 797 D Page 6 EN IS0 13783 : 1997 4 I, 12 dn 1 Supports to oppose the bending force 2 End-load-bearing doub
36、le-socket coupler 3 Pliable band to apply the force 4 Endcap 5 Supports for the weight of the test piece Figure 2: Example of assembly and specified lengths (plan view) 6 Procedure 6.1 Calculate the bending force fusing the following equation: d, is the nominal outside diameter of the PVC-U pipes, i
37、n millimetres; en is the nominal wall thickness of the PVC-U pipes, in millimetres; o is the resulting stress, due to the simultaneous effect of bending and internal pressure. It shall be 20 MPa (N/mm2); dn,m = dn - en; fe is the force, in newtons, acting axially on the end caps and given by the fol
38、lowing equation: nd? 4 Fe = Pi (-) O BSI 1998 Page 6 EN IS0 13783 : 1997 1510 1975 31 55 5012 7763 12321 15587 19830 30778 48939 where: 1833 2385 3955 61 27 9540 1481 7 18797 23654 37893 59602 pi is the internai water pressure in MPa, which shall be 0,l times the value of PN; di is the calculated in
39、side diameter of the PVC-U pipe, .e. (d, - 2e,). NOTE: Some values calculated for f, based on PVC-U pipes, are given in table 1. Table 1: Calculated values for the bending force, F Bending force Fon the double-socket coupler (in newtons) I S 20,8 s 20 *) 110 125 160 200 250 31 5 355 400 500 630 1179
40、 1555 251 1 3867 6078 9588 12300 15468 2431 1 38353 1217 1594 2640 401 3 6376 9923 12647 16050 25220 39690 + S 12,s 12,5 1 16 S10 I S8 2280 2930 4816 7500 1 1592 1841 3 23377 29797 46622 73651 2748 3489 5738 8989 13956 22235 28284 35765 56064 *) S is the pipe series conforming to IS0 40651 996. 6.2
41、Lay the assembled test piece on the supports, ensuring that the pipes and the coupler are in axial alignment (see figure 2). 6.3 Fill the test piece with water at (20 f 5) “C and release all air. Allow the assembly to condition for 60 min to ensure equalization of temperature. 6.4 Carry out the proc
42、edure given in 6.5 at any ambient temperature between 15 “C and 25 “C while maintaining this ambient temperature within 12 “C and examining the joints for leakage during the whole test cycle. 6.5 Cany out the following test procedure in accordance with the schematic arrangement shown in figure 3. wh
43、ich is not intended to require strictly linear rates of change in pressure or force, and by maintaining each static pressure and bending force within +: YO. O BSI 1998 - STD.BSI BS EN IS0 13783-ENGL L798 lbZqbb9 Ob873b8 5bT Page 7 EN IS0 13783 : 1997 At A: increase the water pressure over a period o
44、f 5 min to 1 times PNI, and maintain this pressure for 5 min. At B: increase the water pressure over a period of 5 min to 2,5 times PNI, and maintain this pressure for 5 min. At C: reduce the water pressure over a period of 5 min to 1 times PNI. At D: apply the calculated value of the bending force,
45、 F, in the horizontal plane over a period of 5 min whilst maintaining the internal pressure of 1 times PNI. P= bar bar NOTE: The solid line represents the time limits for pressure changes (inclusive of constant values) and the dotted line represents the bending force, f, (exclusive of values). The l
46、ines do not infer that the rates of change of pressure or force are strictly linear. Figure 3: Schematic hydrostatic pressure test regime with bending At E: maintain the water pressure at 1 times PNI for a further period of 5 min whilst maintaining the bending force F. At F: reduce the water pressur
47、e to atmospheric pressure witin 5 min and ensure that the deflection of the pipe is maintained constant for a further period of 5 min. At G: increase the water pressure within a period of 5 min to 1 times PNI. At H: adjust the bending force, F, to its original value. (The angle of deflection will no
48、rmally be a little greater than at E.) Repeat the cycle from E to H a further nine times. 0 BSI 1998 STDSBSI BS EN IS0 L3783-ENGL 1778 Lb24bb7 Ob873b7 4Tb Page 8 EN IS0 13783 : 1997 At K: at the end of. the 10th cycle, release the bending force and drain the water from the assembled test piece. Appl
49、y a negative pressure to the test piece until a constant pressure of I-O,1 * 0,021 bar is achieved. Isolate the vacuum pump from the test piece, and observe the pressure for 15 min. Apply a further negative pressure to the test piece until a constant pressure of (-0,8 piece, and observe any increase in pressure for a further 15 min. 0,021 bar is achieved, then isolate the vacuum pump from the test 6.6 On completion of the test disassemble the joints and examine all parts for details of any ciacks and deformations and record
