1、BSI Standards Publication PD ISO/TR 4191:2014 Plastics piping systems for water supply Unplasticized poly(vinyl chloride)(PVC-U) and oriented PVC-U (PVC-O) Guidance for installationPD ISO/TR 4191:2014 PUBLISHED DOCUMENT National foreword This Published Document is the UK implementation of ISO/TR 419
2、1:2014. The UK participation in its preparation was entrusted to Technical Committee PRI/88/2, Plastics piping for pressure applications. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary
3、provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2014. Published by BSI Standards Limited 2014 ISBN 978 0 580 82356 5 ICS 23.040.20; 91.140.60; 93.025 Compliance with a British Standard cannot confer immunity from legal obligations. This
4、Published Document was published under the authority of the Standards Policy and Strategy Committee on 28 February 2014. Amendments issued since publication Date Text affectedPD ISO/TR 4191:2014 ISO 2014 Plastics piping systems for water supply Unplasticized poly(vinyl chloride)(PVC-U) and oriented
5、PVC-U (PVC-O) Guidance for installation Systmes de canalisations en plastique pour lalimentation en eau Polychlorure de vinyle non plastifi (PVC-U) et orient PVC-U (PVC-O) Pratique recommande pour la pose TECHNICAL REPORT ISO/TR 4191 Second edition 2014-01-15 Reference number ISO/TR 4191:2014(E)PD I
6、SO/TR 4191:2014ISO/TR 4191:2014(E)ii ISO 2014 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO 2014 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying,
7、or posting on the internet or an intranet, without prior written permission. Permission can be requested 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-mai
8、l copyrightiso.org Web www.iso.org Published in SwitzerlandPD ISO/TR 4191:2014ISO/TR 4191:2014(E) ISO 2014 All rights reserved iii Contents Page Foreword iv Introduction v 1 Scope . 1 2 Normative references 1 3 T erms and definitions, s ymbols, and abbr e viations . 2 3.1 Terms and definitions . 2 3
9、.2 Symbols . 4 3.3 Abbreviations . 4 4 P ar amet ers influencing design 5 4.1 Allowable operating pressure 5 4.2 Ring stiffness of pipes . 5 5 Hydraulic properties 7 5.1 Loss of head . 7 6 Assembl y methods 9 6.1 General . 9 6.2 Integral rubber ring joints .13 6.3 Solvent cement joints .14 6.4 Mecha
10、nical joints .15 7 St or age , handling , and tr ansport of pipes .15 7.1 Handling.15 7.2 Transport 16 7.3 Storage 16 7.4 Cold bending on site 17 7.5 Anchoring and thrust blocks 19 8 St or age , handling , and tr ansport of fittings, v al v es, and ancillaries 21 8.1 PVC-U fittings, valves, and anci
11、llaries are light and easy to handle 21 9 Installation 22 9.1 Installation below ground 22 9.2 Pipe deflection 25 9.3 Installation above ground .27 9.4 Installation in ducts .31 10 C ommissioning b y sit e pr essur e t esting .31 10.1 General 31 10.2 Preparation for test 31 10.3 Test pressures .35 1
12、0.4 Applying the test .35 10.5 Interpretation of results 36 11 Contaminated soil 36 12 Corrosion protection of metal parts 36 13 Pressure surge .37 14 Usage at lower temperature 37 15 Fatigue 37 16 Repairs .38 17 Pipeline detection 39 Annex A (informative) Classification of soils 40 Bibliogr aph y .
13、44PD ISO/TR 4191:2014ISO/TR 4191:2014(E) Foreword ISO (the International Organization 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 b
14、ody interested in a subject for which a technical committee has been established 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 Electro
15、technical Commission (IEC) on all matters of electrotechnical standardization. The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of
16、ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives). 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
17、responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents). Any trade name used in this document is information
18、given for the convenience of users and does not constitute an endorsement. For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the foll
19、owing URL: Foreword - Supplementary information The committee responsible for this document is ISO/TC 138, Plastics pipes, fittings and valves for the transport of fluids, Subcommittee SC 2, Plastics pipes and fittings for water supplies. This second edition cancels and replaces the first edition (I
20、SO/TR 4191:1989), which has been technically revised.iv ISO 2014 All rights reservedPD ISO/TR 4191:2014ISO/TR 4191:2014(E) Introduction This Technical Report is a guidance document and gives a recommended practice for the installation of unplasticized poly(vinyl chloride) (PVC-U) and oriented unplas
21、ticized poly(vinyl chloride) (PVC-O) piping systems conveying water under pressure for buried and above-ground drainage and sewerage systems. Molecular orientation of PVC-U results in the improvement of physical and mechanical properties. Unless specifically mentioned, the recommendations are valid
22、for both PVC-U and PVC-O and expressed as PVC. ISO 2014 All rights reserved vPD ISO/TR 4191:2014PD ISO/TR 4191:2014Plastics piping systems for water supply Unplasticized poly(vinyl chloride)(PVC-U) and oriented PVC-U (PVC-O) Guidance for installation 1 Scope This ISO Technical Report gives recommend
23、ed practices for installation of unplasticized poly(vinyl chloride) (PVC-U) and oriented unplasticized poly(vinyl chloride) (PVC-O) pipes, fittings, valves, and ancillaries when used in piping systems conveying water under pressure. The recommendations are intended to give practical guidance of desi
24、gn and installation of piping systems incorporating pipes, fittings, valves, and ancillary equipment made from PVC materials and used for the following purposes: water mains and services buried in ground; waste water under pressure; conveyance of water above ground for both outside and inside buildi
25、ngs, for the supply of water under pressure at approximately 20 C (cold water) intended for human consumption and for general purposes. This Technical report is also applicable to components for the conveyance of water up to and including 45 C. For temperatures between 25 C and 45 C, Figure 1 of ISO
26、 1452-2:2009 applies. In addition, recommendations are given for the connection to fittings, valves, and ancillary equipment made from materials other than PVC. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for
27、its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 3, Preferred numbers Series of preferred numbers ISO 161-1, Thermoplastics pipes for the conveyance of fluids Nominal o
28、utside diameters and nominal pressures Part 1: Metric series ISO 1452-1:2009, Plastics piping systems for water supply and for buried and above-ground drainage and sewerage under pressure Unplasticized poly(vinyl chloride) (PVC-U) Part 1: General ISO 1452-2:2009, Plastics piping systems for water su
29、pply and for buried and above-ground drainage and sewerage under pressure Unplasticized poly(vinyl chloride) (PVC-U) Part 2: Pipes ISO 1452-3, Plastics piping systems for water supply and for buried and above-ground drainage and sewerage under pressure Unplasticized poly(vinyl chloride) (PVC-U) Part
30、 3: Fittings ISO 1452-4, Plastics piping systems for water supply and for buried and above-ground drainage and sewerage under pressure Unplasticized poly(vinyl chloride) (PVC-U) Part 4: Valves ISO 1452-5, Plastics piping systems for water supply and for buried and above-ground drainage and sewerage
31、under pressure Unplasticized poly(vinyl chloride) (PVC-U) Part 5: Fitness for purpose of the system ISO 4065, Thermoplastics pipes Universal wall thickness table TECHNICAL REPORT ISO/TR 4191:2014(E) ISO 2014 All rights reserved 1PD ISO/TR 4191:2014ISO/TR 4191:2014(E) ISO 4633, Rubber seals Joint rin
32、gs for water supply, drainage and sewerage pipelines Specification for materials ISO 7387-1, Adhesives with solvents for assembly of PVC-U pipe elements Characterization Part 1: Basic test methods ISO 9080, Plastics piping and ducting systems Determination of the long-term hydrostatic strength of th
33、ermoplastics materials in pipe form by extrapolation ISO 9311-1, Adhesives for thermoplastic piping systems Part 1: Determination of film properties ISO 9969, Thermoplastics pipes Determination of ring stiffness ISO/DIS 16422:2013, Pipes and joints made of oriented unplasticized poly(vinyl chloride)
34、 (PVC-O) for the conveyance of water under pressure Specifications 3 T erms a nd definiti ons, s ymbols, and abb r e viations 3.1 T erms and definiti ons For the purposes of this document, the terms and definitions in ISO 1452-1:2009 and the following apply. 3.1.1 nominal outside diameter d n numeri
35、cal designation of size which is common to all components in a thermoplastics piping system other than flanges and components designated by thread size Note 1 to entry: It is a convenient round number for reference purposes. Note 2 to entry: For pipe conforming to ISO 161-1, the nominal outside diam
36、eter, expressed in millimetres, is the minimum mean outside diameter d em, min . 3.1.2 nominal wall thickness e n specified wall thickness, in millimetres Note 1 to entry: It is identical to the specified minimum wall thickness at any point e y,min . 3.1.3 nominal pressure (PN) alphanumeric designat
37、ion related to the mechanical characteristics of the components of a piping system and used for reference purposes 3.1.4 hydrostatic pressure p internal pressure applied to a piping system 3.1.5 working pressure (PFA) maximum pressure which a piping system can sustain in continuous use under given s
38、ervice conditions without pressure surge Note 1 to entry: For thermoplastics piping systems, the value of the nominal pressure is equal to the working pressure at a temperature of 20 C expressed in bars.2 ISO 2014 All rights reservedPD ISO/TR 4191:2014ISO/TR 4191:2014(E) 3.1.6 hydrostatic stress str
39、ess induced in the wall of a pipe when it is subjected to internal water pressure Note 1 to entry: The stress in megapascals is related to the internal pressure, p, in bars, the nominal wall thickness, e n , in millimetres, and the nominal outside diameter of the pipe, d n , in millimetres by the fo
40、llowing formula: Note 2 to entry: If and p are given in the same units, the denominator becomes 2en. 3.1.7 long-term hydrostatic strength at 20 C lhts quantity with the unit of stress, i.e. MPa, which can be considered to be a property of the material under consideration and which represents the 97,
41、5 % lower confidence limit for the long-term hydrostatic strength and equals the predicted average strength at a temperature of 20 C and a time of 50 years with internal water pressure Note 1 to entry: ISO 9080 gives the possibility to extrapolate to 100 year lifetime. 3.1.8 l o w e r c o n f i d e
42、n c e l i m i t o f t h e p r e d i c t e d h y d r o s t a t i c s t r e n g t h LPL quantity with the dimension of stress, which represents the 97,5 % lower confidence limit of the predicted hydrostatic strength for a single value at a temperature T and a time t Note 1 to entry: It is denoted as L
43、PL= (T,t,0,975) . Note 2 to entry: The value of this quantity is determined by the method given in ISO 9080. 3.1.9 minimum required strength MRS value of LPLrounded to the next lower value of the R 10 series from ISO 3 when LPLis below 10 MPa or to the next lower value of the R 20 series when LPLis
44、higher than 10 MPa 3.1.10 de s i g n c o ef f ic ient C overall coefficient with a value greater than one, which takes into consideration service conditions, as well as properties of the components of a piping system other than those represented in LPL 3.1.11 pipe series S dimensionless number for p
45、ipe designation (see ISO 4065) 3.1.12 standard dimension ratio SDR numerical designation of a pipe series which is a convenient round number approximately equal to the dimension ratio of the nominal outside diameter, d n , and the nominal wall thickness, e n Note 1 to entry: According to ISO 4065, t
46、he standard dimension ratio, SDR, and the pipe series S are related as follows: SDR = 2S +1 ISO 2014 All rights reserved 3PD ISO/TR 4191:2014ISO/TR 4191:2014(E) 3.2 S ymbols C design coefficient d e outside diameter (at any point) d em mean outside diameter d i inside diameter (at any point) d im me
47、an inside diameter of socket d n nominal (outside or inside) diameter DN nominal size E wall thickness (at any point) e m mean wall thickness e n nominal wall thickness f A derating ( oruprating) factor for application f T derating factor for temperatures material density hydrostatic stress P intern
48、al hydrostatic pressure p T test pressure s design stress LPL stress at lower predicted confidence limit 3.3 A bbr e viations LPL lower predicted confidence limit MRS minimum required strength MOP maximum operating pressure PFA allowable operating pressure PEA allowable site test pressure PN nominal
49、 pressure DN nominal diameter PVC-U unplasticized poly(vinyl chloride) SDR standard dimension ratio PVC-O oriented poly(vinyl chloride)4 ISO 2014 All rights reservedPD ISO/TR 4191:2014ISO/TR 4191:2014(E) 4 P ar amet ers influencing design 4.1 Allo w able oper ating pr essur e 4.1.1 Where pipe material temperatures do not exceed 25 C, and where no extra safety considerations are applicable, nominal pressures are given
