SANS 22391-5-2008 Plastics piping systems for hot and cold water installations - Polyethylene of raised temperature resistance (PE-RT) Part 5 Fitness for purpose of the system《冷热水装.pdf

1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA

2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any

3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ISBN 978-0-626-21577-4 SANS 22391-5:2008 Edition 1 ISO 22391-5:2007 Edition 1SOUTH AFRICAN NATIONAL STANDARD Plastics piping systems for hot and cold wat

4、er installations Polyethylene of raised temperature resistance (PE-RT) Part 5: Fitness for purpose of the system This national standard is the identical implementation of ISO 22391-5:2007 and is adopted with the permission of the International Organization for Standardization. Published by SABS Stan

5、dards Division 1 Dr Lategan Road Groenkloof Private Bag X191 Pretoria 0001 Tel: +27 12 428 7911 Fax: +27 12 344 1568 www.sabs.co.za SABS This standard may only be used and printed by approved subscription and freemailing clients of the SABS.SANS 22391-5: 2008 Edition 1 ISO 22391-5: 2007 Edition 1 Ta

6、ble of changes Change No. Date Scope National foreword This South African standard was approved by National Committee SABS SC 138H, Water and sanitation Equipment and systems Plastics pipes and fittings, in accordance with procedures of the SABS Standards Division, in compliance with annex 3 of the

7、WTO/TBT agreement. This SANS document was published in December 2008. This standard may only be used and printed by approved subscription and freemailing clients of the SABS. Reference number ISO 22391-5:2007(E) ISO 2007INTERNATIONAL STANDARD ISO 22391-5 First edition 2007-01-15 Plastics piping syst

8、ems for hot and cold water installations Polyethylene of raised temperature resistance (PE-RT) Part 5: Fitness for purpose of the system Systmes de canalisations en plastique pour les installations deau chaude et froide Polythylne de meilleure rsistance la temprature (PE-RT) Partie 5: Aptitude lempl

9、oi du systme SANS 22391-5:2008This standard may only be used and printed by approved subscription and freemailing clients of the SABS.ISO 22391-5:2007(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but sh

10、all not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobes licensing policy. The ISO Central Secretariat accepts no liability in this area

11、. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by

12、 ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. ISO 2007 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electro

13、nic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester. 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

14、 Web www.iso.org Published in Switzerland ii ISO 2007 All rights reservedSANS 22391-5:2008This standard may only be used and printed by approved subscription and freemailing clients of the SABS.ISO 22391-5:2007(E) ISO 2007 All rights reserved iii Foreword ISO (the International Organization for Stan

15、dardization) 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 established has the right

16、 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 standardization. International S

17、tandards 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. Publication as an

18、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 patent rights. ISO 22

19、391-5 was prepared by Technical Committee ISO/TC 138, Plastics pipes, fittings and valves for the transport of fluids, Subcommittee SC 2, Plastics pipes and fittings for water supplies. ISO 22391 consists of the following parts, under the general title Plastics piping systems for hot and cold water

20、installations Polyethylene of raised temperature resistance (PE-RT): Part 1: General Part 2: Pipes Part 3: Fittings Part 5: Fitness for purpose of the system SANS 22391-5:2008This standard may only be used and printed by approved subscription and freemailing clients of the SABS.ISO 22391-5:2007(E) i

21、v ISO 2007 All rights reservedIntroduction ISO 22391, the system standard, specifies the requirements for a piping system and its components when made from polyethylene of raised temperature resistance (PE-RT). The piping system is intended to be used for hot and cold water installations. In respect

22、 of potential adverse effects on the quality of water intended for human consumption caused by the products covered by ISO 22391: a) no information is provided as to whether the products may be used without restriction; b) existing national regulations concerning the use and/or characteristics of th

23、e products remain in force. This part of ISO 22391 specifies the characteristics of fitness for purpose of the system. At the time of its publication, system standards for piping systems of other plastics materials used for the same application are ISO 15874:2003, Plastics piping systems for hot and

24、 cold water installations Polypropylene (PP), ISO 15875:2003, Plastics piping systems for hot and cold water installations Crosslinked polyethylene (PE-X), ISO 15876:2003, Plastics piping systems for hot and cold water installations Polybutylene (PB), and ISO 15877:2003, Plastics piping systems for

25、hot and cold water installations Chlorinated poly(vinyl chloride) (PVC-C). SANS 22391-5:2008This standard may only be used and printed by approved subscription and freemailing clients of the SABS.INTERNATIONAL STANDARD ISO 22391-5:2007(E) ISO 2007 All rights reserved 1 Plastics piping systems for ho

26、t and cold water installations Polyethylene of raised temperature resistance (PE-RT) Part 5: Fitness for purpose of the system 1 Scope This part of ISO 22391 specifies the characteristics of the fitness for purpose of piping systems made from polyethylene of raised temperature resistance (PE-RT), in

27、tended to be used for hot and cold water installations within buildings for the conveyance of water whether or not the water is intended for human consumption (domestic systems) or heating systems under the design pressures and temperatures appropriate to the class of application according to ISO 22

28、391-1. It covers a range of service conditions (classes of application), design pressures and pipe dimension classes, and also specifies test parameters and test methods. When used in conjunction with the other parts of ISO 22391, it is respectively applicable to PE-RT pipes, fittings, their joints,

29、 and to joints having components of PE-RT as well as of other plastics and non-plastics materials, used for hot and cold water installations. It is not applicable for values of design temperature, maximum design temperature or malfunction temperature in excess of those specified in ISO 22391-1. NOTE

30、 It is the responsibility of the purchaser or specifier to make the appropriate selections from these aspects, taking into account their particular requirements and any relevant national regulations and installation practices or codes. 2 Normative references The following referenced documents are in

31、dispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 1167-1:2006, Thermoplastics pipes, fittings and assemblies for the conveyance of fluid

32、s Determination of the resistance to internal pressure Part 1: General method ISO 1167-2:2006, Thermoplastics pipes, fittings and assemblies for the conveyance of fluids Determination of the resistance to internal pressure Part 2: Preparation of pipe test pieces ISO 22391-1, Plastics piping systems

33、for hot and cold water installations Polyethylene of raised temperature resistance (PE-RT) Part 1: General ISO 22391-2, Plastics piping systems for hot and cold water installations Polyethylene of raised temperature resistance (PE-RT) Part 2: Pipes EN 712, Thermoplastics piping systems End-load bear

34、ing mechanical joints between pressure pipes and fittings Test method for resistance to pull-out under constant longitudinal force EN 713, Plastics piping systems Mechanical joints between fittings and polyolefin pressure pipes Test method for leaktightness under internal pressure of assemblies subj

35、ected to bending SANS 22391-5:2008This standard may only be used and printed by approved subscription and freemailing clients of the SABS.ISO 22391-5:2007(E) 2 ISO 2007 All rights reservedEN 12293, Plastics piping systems Thermoplastics pipes and fittings for hot and cold water Test method for the r

36、esistance of mounted assemblies to temperature cycling EN 12294, Plastics piping systems Systems for hot and cold water Test method for leaktightness under vacuum EN 12295, Plastics piping systems Thermoplastics pipes and associated fittings for hot and cold water Test-method for resistance of joint

37、s to pressure cycling 3 Terms, definitions, symbols and abbreviated terms For the purposes of this document, the terms, definitions, symbols and abbreviated terms given in ISO 22391-1 apply. 4 Fitness for purpose of joints and piping system 4.1 General The joints and the piping system shall be teste

38、d in accordance with Table 1 and 4.2 to 4.7, as applicable. When tested, their characteristics shall be in accordance with the requirements of the corresponding subclauses. For the tests given in Table 1, applicable for each of the different types of jointing system covered by this part of ISO 22391

39、, the fittings shall be connected to the pipe with which they are intended to be used. Table 1 Joint tests Jointing system Test SW EF M Test parameters (subclause of this part of ISO 22391 in which given) Test method Internal pressure test Yes Yes Yes 4.2 ISO 1167-1 and ISO 1167-2 Bending test N/A N

40、/A Yes 4.3 EN 713 Pull-out test N/A N/A Yes 4.4 EN 712 Thermal cycling test Yes Yes Yes 4.5 EN 12293 Pressure cycling test N/A N/A Yes 4.6 EN 12295 Leaktightness under vacuum test N/A N/A Yes 4.7 EN 12294 SW Socket fusion joint. EF Electrofusion joint. M Mechanical joint. Yes Test applicable. N/A No

41、t applicable. SANS 22391-5:2008This standard may only be used and printed by approved subscription and freemailing clients of the SABS.ISO 22391-5:2007(E) ISO 2007 All rights reserved 3 4.2 Internal pressure test When tested in accordance with ISO 1167-1 and ISO 1167-2, using the test parameters in

42、accordance with Table 2 for the relevant classes, the joint assemblies shall not leak. The test pressure, p J , for a given time to failure and test temperature shall be determined using Equation (1): P JD DPpp = (1) where p Jis the hydrostatic test pressure, in bars, to be applied to the joint asse

43、mbly during the test period; Pis the hydrostatic stress value, in megapascals (MPa), for the pipe material corresponding to time-to-failure/test temperature points, as given in Table 2; DPis the design stress value, in megapascals (MPa), for the pipe material as determined for each class and accordi

44、ng to ISO 22391-2:2006, Table A.2; p Dis the design pressure of 4 bar, 6 bar, 8 bar or 10 bar, as applicable. NOTE 1 bar = 0,1 MPa = 10 5 Pa; 1 MPa = 1 N/mm 2Table 2 Test parameters for internal pressure test Application class 1 2 4 5 Maximum design temperature, T max , C 80 80 70 90 Design stress o

45、f pipe material, DP , MPa 3,29 2,68 3,25 2,38 Test temperature a , T test , C 95 95 80 95 Test duration, t, h 1 000 1 000 1 000 1 000 Hydrostatic stress of pipe material, P , MPa 3,4 3,4 4,5 3,4 Test pressure, p J , bars for a design pressure, p D , of: 4 bar 5,1 b5,1 b6,8 b5,8 6 bar 6,3 7,7 8,4 8,7

46、 8 bar 8,3 10,2 11,2 11,5 10 bar 10,4 12,8 14,0 14,4 Number of test pieces 3 3 3 3 aGenerally the highest test temperature is taken to be (T max+ 10) C with an upper limit of 95 C. However, in order to match existing test facilities, the highest test temperature for classes 1 and 2 is also set at 95

47、 C. The hydrostatic stresses given correspond to the given test. bThe 20 C, 10 bar, 50 years, cold water requirement, being higher, determines this value (see ISO 22391-1:2006, Clause 4). In special circumstances, if joint tests according to this subclause cause leaks resulting from differential- el

48、ongation-induced deformations, a test pressure may be determined from the stress and creep data (relative to a design period of 50 years) for the different materials used. SANS 22391-5:2008This standard may only be used and printed by approved subscription and freemailing clients of the SABS.ISO 223

49、91-5:2007(E) 4 ISO 2007 All rights reserved4.3 Bending test When tested in accordance with EN 713, to the applicable pressure for the 20 C, 1 h condition, using the test parameters according to Table 3 and a bending radius equal to the minimum radius of bending for the pipes as recommended by the system supplier, the joint assembly shall not leak. This test is only applicable to pipes of nominal diameter greater than or equal to 32 m