1、DEUTSCHE NORM Januarv 2001 End-load-bearing and non-end-load-bearing assemblies and joints for thermoplastics pressure piping DIN EN IS0 13846 - Test method for long-term leaktightness under internal water pressure (IS0 13846 : 2000) English version of DIN EN IS0 13846 ICs 23.040.60 Kunststoff-Rohrl
2、eitungssysteme - Zugfeste und nicht-zugfeste Rohrverbindungen und Bauteilkombina- tionen fr thermoplastische Druckrohrleitungen - Prfverfahren fr die Langzeitdichtheit unter Wasser- innendruck (IS0 13846 : 2000) European Standard EN IS0 13846 : 2000 has the status of a DIN Standard. National forewor
3、d This standard has been published in accordance with a decision taken by CEN/TC 155 Plastics piping systems and ducting systems to adopt, without alteration, International Standard IS0 13846 as a European Standard. The responsible German body involved in its preparation was the Normenausschuss Kuns
4、tstoffe (Plastics Standards Committee), Technical Committee Prfverfahren fr Rohre. EN comprises 8 pages. No pari of this standard may be reproduced without the prior permission of Ref. No. DIN EN IS0 13846 : 2001 -0 Y Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germ
5、any, s the exclusive right of sale for German Standards (DIN-Normen). English price group 06 Sales No. 1106 05.01 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN IS0 13846 October 2000 ICs 23.040.60 English version Plastics piping systems End-load-bearing and non-end-load-bearing assemblies and
6、 joints for thermoplastics pressure piping Test method for long-term leaktightness under internal water pressure (IS0 13846 : 2000) Systmes de canalisations en plasti- ques - Assemblages et jonctions avec et sans effet de fond pour canalisations thermoplastiques avec pression - M- thode dessai pour
7、vrifier Ietanchit long terme sous une pression deau interne (IS0 13846 : 2000) Kunststoff-Rohrleitungssysteme - Zugfeste und nicht-zugfeste Rohr- Verbindungen und Bauteil- kombinationen fr thermoplastische Druckrohrleitungen - Prfverfahren fr die Langzeitdichtheit unter Wasserinnendruck (IS0 13846 :
8、 2000) This European Standard was approved by CEN on 1999-04-24. CEN members are bound to comply with the CENKENELEC 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 re
9、ferences concerning such national stand- ards may be obtained on application to the Central Secretariat or to any CEN member. The European Standards exist in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN membe
10、r 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, the Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, the Netherlands, Norway
11、, Portugal, Spain, Sweden, Switzerland, and the United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels O 2000. CEN - All rights of exploitation in any form and by any means rese
12、rved worldwide for CEN national members. Ref. No. EN IS0 13846 : 2000 E Page 2 EN IS0 13846 : 2000 Contents Page Foreword 2 1 Scope 3 2 Principle 3 3 Apparatus . 3 3.1 Ambient temperatures 3 3.2 Elevated temperatures . 3 3.3 Pressure control device . 4 3.5 Compensating device . 4 4 Test piece 5 4.1
13、Preparation 5 4.2 Number . 6 5 Procedure . 6 5.1 Preparation 6 5.2 Conditioning 6 5.3 Pressure control . 6 5.4 Examination of the test assembly . 7 5.5 Examination at the mid-point and at the end of the test period . 7 6 Test report 7 Bibliography 8 3.4 support 4 5.6 Rupture 7 Foreword The text of E
14、N IS0 13846:2000 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 ISOTTC 138 “Plastics pipes. fittings and valves for the transport of fluids“. This European Standard
15、shall be given the status of a national standard. either by publication of an identical text or by endorsement. at the latest by April 2001. and conflicting national standards shall be withdrawn at the latest by April 2001 . According to the CENKENELEC Internal Regulations. the national standards or
16、ganizations 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 . The material-depe
17、ndent 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 support System Standards for plastics piping systems and ducting systems . Page 3 EN IS0 13846 : 2000 1 Scope This standard spec
18、ifies a test method for the long-term leakightness of end-load-bearing and non- end-load-bearing mechanically jointed assemblies and joints between fittings, ancillaries, valves and thermoplastics pressure pipes, including integral pipe joints. This method is applicable to joints where similar or di
19、fferent materials are connected, where sealing mechanisms include elastomeric sealing rings or adhesives. This method is applicable in addition to the hydrostatic pressure tests for materials and components. 2 Principle The test simulates expansion of the joint area due to creep. This is related to
20、the permissible working conditions for 50 years and based on the properties of the components assembled. The leaktightness of the joint(s) is tested as an assembly comprising either: a) at least one fitting joined to pipes: or b) an ancillary component or a valve joined to pipes; or c) a pipe-to-pip
21、e joint. The test is carried out for at least 1000 h at ambient temperature and at the maximum allowed working temperature for the piping system for which the assembly or joint is intended to be used. The test piece and its joint(s) are subjected to a specified internal hydrostatic water pressure at
22、 a specified temperature for the period of time (1000 h or more) specified in the referring standard. Additional reinforcement of the joint area is not permitted for this test. NOTE standard: It is assumed that the following test parameters are set by the standard making reference to this a) the min
23、imum test period under pressure, .e. 1000 h or more (see clause 2 and 5.4); b) the free length, i, of the pipe sections under test (see 4.1); c) the number of test pieces (see 4.2); d) the test temperature (e.g. ambient or maximum allowed working temperature) (see 5.2); e) the test pressure (see 5.3
24、). 3 Apparatus 3.1 Ambient temperatures For tests at ambient temperatures (see 5.2), a test room or water bath, capable of being maintained at a temperature to within ) %. 3.4 Support Support for end-load-bearing assemblies and joints such that the assemblies and joints shall be subjected to the axi
25、al forces generated durin the test and such that the support shall not provide any axial restraint. (For bibliography see EN 715fiI.) An example of solvent cement type test assembly is shown in figure 1. 3.5 Compensating device A compensating device for non-end-load-bearing assemblies and joints, ca
26、pable of sustaining the axial forces generated by the internal water pressure, whilst maintaining the axial alignment of the joint assembly. (For bibliography see EN 71 I.) Connecting rods or external frames between non-end- load bearing sealing devices to keep them in place as necessary to prevent
27、any separation. Examples of test assemblies are shown in figures 2 and 3. NOTE removal of the test assemblies from the test bath. Precautions can be necessary to maintain the alignment of the joint assemblies, particularly for Figure 1 - Example of solvent cement type test assembly Page 5 EN IS0 138
28、46 : 2000 Figure 2 -Example of elastomeric sealing ring type test assembly Figure 3 -Example of integral joint type test assembly 4 Test piece 4.1 Preparation The test piece shall comprise an assembly containing at least one pipe sample joined to a socket of a fitting or to a socketed pipe or joined
29、 with an assembled finished product (such as a valve or union). Additional components may be added to the test assembly as required. Components of the same nominal pressure, PN, or the same pipe series S, shall be used for the assembly. The relevant dimensions of the joint components shall be measur
30、ed and recorded, .e. the mean outside diameter and out-of-roundness of any spigot or pipe joint area, the mean inside diameter and out-of-roundness of any socket and the relevant dimensions of any intermediate component (see note at the end of this clause). Page 6 EN IS0 13846 : 2000 The minimum len
31、gth of the pipe section shall be such that its free length, L, between the assembly under test and the joint or the end closure (plug or cap) shall be as specified in the referring standard. NOTE outside diameter of the pipe, with a minimum of 150 mm. All components shall conform to the appropriate
32、part of the applicable System Standard. In addition the elastomeric sealing rings shall conform to the manufacturers specifications. The assembly shall be carried out in accordance with the manufacturers instructions. For non-end-load-bearing joints connecting rods or external frames may be used as
33、necessary to prevent any separation (see 3.5). NOTE For this test components should be selected which are as near as possible to the extremes of their respective tolerance bands which provide the most severe test conditions, e.g. for elastomeric sealing ring joints the socket and the diameter of the
34、 ring groove housing should be at or as near as possible to their maximum value, the spigot of the pipe or fitting should be at or as near as possible to the minimum value, and the sealing ring should be at or as near as possible to the minimum cross-section specified by the manufacturer. If the fre
35、e length is not specified in the referring standard, it should be not less than the nominal 4.2 Number The number of test piece components and/or joints tested shall be as specified in the referring standard. 5 Procedure WARNING All necessary precautions should be taken when testing using components
36、 under pressure. 5.1 Preparation Fill the test assembly with water. Set up the test assembly, without any deformation, in the apparatus appropriate to the type of joint and adjust the pipe section(s) in line with the axis (axes) of the socket(s). 5.2 Conditioning Condition the test assembly in the t
37、est room or conditioning chamber for at least 3 h for test temperatures more than 25 “C or for at least 20 min for test temperatures equal to or less than 25 “C. If the test temperature is specified as “ambient temperature“, carry out the conditioning at any temperature between 15 “C and 25 OC. Duri
38、ng subsequent testing in accordance with 5.3 to 5.5 inclusive, maintain the test temperature constant to within f 2 OC and within the range of 15 “C to 25 OC. 5.3 Pressure control Connect the test assembly to the pressure control device. Evacuate all air from the test assembly and within the period
39、30 s to 1 min apply the test pressure as specified in the referring standard. Record the time when the test pressure is achieved as the commencement of the test period. Inspect the assembly for any signs of leakage and report the result. Page 7 EN IS0 13846 : 2000 5.4 Examination of the test assembl
40、y When required (see 53, inspect the test assembly, as appropriate, as follows. a) If the test is carried out in air, thoroughly dry the whole outside surface of the test piece and examine it for leakage. If the test is carried out in water, remove the test assembly from the test bath, dry the surfa
41、ce of the test piece, examine it for leakage and if leakage is not observed, return the test assembly to the bath as soon as possible. b) 5.5 Examination at the mid-point and at the end of the test period Repeat the examination of the test assembly for leakage (see 5.4) at the mid-point and at the e
42、nd of the test period, which shall be at least 1000 h, unless a longer minimum period is specified in the referring standard or prior failure of the assembly occurs in a manner which does not allow continuation in accordance with 5.6. 5.6 Rupture If rupture occurs in the pipe section between the joi
43、nts under test or in an end closure not included as part of the test assembly, disregard the test and replace the failed component by another. After replacement, continue the test procedure. If the failure of the component causes damage to any of the joints or assemblies on test, reject these test p
44、ieces and repeat the test procedure. 6 Test report The test report shall include the following information: a) a reference to this standard and to the referring standard; b) the identities of the component(s), e.g. fitting(s), vaive(s), pipe(s), comprising the test assembly; c) the nominal pressure,
45、 PN, and/or S series of the component(s) and pipe(s) comprising the test assembly; d) the test pressure, p, in bars; e) the test temperature, T, in degrees Celsius; f) the time under pressure, t, in hours; g) as applicable, the following dimensions for the components under test: 1) the measured mean
46、 outside diameter of the pipe or spigot; 2) the mean inside diameter of the socket or component comprising the joint; 3) any out-of-roundness of the pipe, spigot or socket; h) details of any leakage, .e. location, extent, time, or a declaration that the joint) or assembly(ies) did not leak; i) any f
47、actors which may have affected the results, such as any incidents or any operating details not specified in this standard; j) the date of test; k) the testing laboratory and the responsible person. Page 8 EN IS0 13846 : 2000 Bibliography I EN 71 5, Thermoplastics piping systems - End-load-bearing jo
48、ints between small diameter pressure pipes and fittings - Test method for leaktightness under internal water pressure, including end thrust joints between pressure pipes and moulded fittings - Test method for leaktightness under internal hydrostatic pressure without end thrust 2 EN 71 4, Thermoplastics piping systems - Non-end-load-bearing elastomeric sealing ring type
