1、BSI Standards PublicationPD ISO/TR 4191:2014Plastics piping systems forwater supply Unplasticizedpoly(vinyl chloride)(PVC-U)and oriented PVC-U (PVC-O) Guidance for installationPD ISO/TR 4191:2014 PUBLISHED DOCUMENTNational forewordThis Published Document is the UK implementation of ISO/TR4191:2014.T
2、he UK participation in its preparation was entrusted to TechnicalCommittee PRI/88/2, Plastics piping for pressure applications.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of
3、a contract. Users are responsible for its correctapplication. The British Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 82356 5ICS 23.040.20; 91.140.60; 93.025Compliance with a British Standard cannot confer immunity fromlegal obligations.This Published Document wa
4、s published under the authority of theStandards Policy and Strategy Committee on 28 February 2014.Amendments issued since publicationDate Text affectedPD ISO/TR 4191:2014 ISO 2014Plastics piping systems for water supply Unplasticized poly(vinyl chloride)(PVC-U) and oriented PVC-U (PVC-O) Guidance fo
5、r installationSystmes 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 poseTECHNICAL REPORTISO/TR4191Second edition2014-01-15Reference numberISO/TR 4191:2014(E)PD ISO/TR 4191:2014ISO/TR 4191:2014(E
6、)ii ISO 2014 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2014All 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, or posting on the internet or an in
7、tranet, 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 officeCase postale 56 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax + 41 22 749 09 47E-mail copyrightiso.orgWeb www.iso.orgPublish
8、ed in SwitzerlandPD ISO/TR 4191:2014ISO/TR 4191:2014(E) ISO 2014 All rights reserved iiiContents PageForeword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions, symbols, and abbreviations . 23.1 Terms and definitions . 23.2 Symbols . 43.3 Abbreviations . 44 Parameters influe
9、ncing design 54.1 Allowable operating pressure 54.2 Ring stiffness of pipes . 55 Hydraulic properties 75.1 Loss of head . 76 Assembly methods 96.1 General . 96.2 Integral rubber ring joints . 136.3 Solvent cement joints . 146.4 Mechanical joints . 157 Storage, handling, and transport of pipes .157.1
10、 Handling. 157.2 Transport 167.3 Storage 167.4 Cold bending on site 177.5 Anchoring and thrust blocks 198 Storage, handling, and transport of fittings, valves, and ancillaries 218.1 PVC-U fittings, valves, and ancillaries are light and easy to handle 219 Installation 229.1 Installation below ground
11、229.2 Pipe deflection 259.3 Installation above ground . 279.4 Installation in ducts . 3110 Commissioning by site pressure testing .3110.1 General 3110.2 Preparation for test 3110.3 Test pressures . 3510.4 Applying the test . 3510.5 Interpretation of results 3611 Contaminated soil 3612 Corrosion prot
12、ection of metal parts 3613 Pressure surge .3714 Usage at lower temperature 3715 Fatigue 3716 Repairs .3817 Pipeline detection 39Annex A (informative) Classification of soils 40Bibliography .44PD ISO/TR 4191:2014ISO/TR 4191:2014(E)ForewordISO (the International Organization for Standardization) is a
13、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 to be represented
14、 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.The procedures used to develop thi
15、s 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 ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Di
16、rectives, 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 responsible for identifying any or all such patent rights. Details of any patent rights identified during the deve
17、lopment 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 given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO
18、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 following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 138, Plastics p
19、ipes, 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 (ISO/TR 4191:1989), which has been technically revised.iv ISO 2014 All rights reservedPD ISO/TR 4191:2014ISO/TR 4191:201
20、4(E)IntroductionThis Technical Report is a guidance document and gives a recommended practice for the installation of unplasticized poly(vinyl chloride) (PVC-U) and oriented unplasticized poly(vinyl chloride) (PVC-O) piping systems conveying water under pressure for buried and above-ground drainage
21、and sewerage systems.Molecular orientation of PVC-U results in the improvement of physical and mechanical properties.Unless specifically mentioned, the recommendations are valid for both PVC-U and PVC-O and expressed as PVC. ISO 2014 All rights reserved vPD ISO/TR 4191:2014PD ISO/TR 4191:2014Plastic
22、s piping systems for water supply Unplasticized poly(vinyl chloride)(PVC-U) and oriented PVC-U (PVC-O) Guidance for installation1 ScopeThis ISO Technical Report gives recommended practices for installation of unplasticized poly(vinyl chloride) (PVC-U) and oriented unplasticized poly(vinyl chloride)
23、(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 design and installation of piping systems incorporating pipes, fittings, valves, and ancillary equipment made from PVC materials
24、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 buildings,for the supply of water under pressure at approximately 20 C (cold water) intended for human consumption and for general
25、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 1452-2:2009 applies.In addition, recommendations are given for the connection to fittings, valves, and ancillary equipment mad
26、e from materials other than PVC.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the reference
27、d document (including any amendments) applies.ISO 3, Preferred numbers Series of preferred numbersISO 161-1, Thermoplastics pipes for the conveyance of fluids Nominal outside diameters and nominal pressures Part 1: Metric seriesISO 1452-1:2009, Plastics piping systems for water supply and for buried
28、 and above-ground drainage and sewerage under pressure Unplasticized poly(vinyl chloride) (PVC-U) Part 1: GeneralISO 1452-2:2009, Plastics piping systems for water supply and for buried and above-ground drainage and sewerage under pressure Unplasticized poly(vinyl chloride) (PVC-U) Part 2: PipesISO
29、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 3: FittingsISO 1452-4, Plastics piping systems for water supply and for buried and above-ground drainage and sewerage under pressure U
30、nplasticized poly(vinyl chloride) (PVC-U) Part 4: ValvesISO 1452-5, Plastics piping systems for water supply and for buried and above-ground drainage and sewerage under pressure Unplasticized poly(vinyl chloride) (PVC-U) Part 5: Fitness for purpose of the systemISO 4065, Thermoplastics pipes Univers
31、al wall thickness tableTECHNICAL 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 rings for water supply, drainage and sewerage pipelines Specification for materialsISO 7387-1, Adhesives with solvents for assembly of PVC-U pi
32、pe elements Characterization Part 1: Basic test methodsISO 9080, Plastics piping and ducting systems Determination of the long-term hydrostatic strength of thermoplastics materials in pipe form by extrapolationISO 9311-1, Adhesives for thermoplastic piping systems Part 1: Determination of film prope
33、rtiesISO 9969, Thermoplastics pipes Determination of ring stiffnessISO/DIS 16422:2013, Pipes and joints made of oriented unplasticized poly(vinyl chloride) (PVC-O) for the conveyance of water under pressure Specifications3 Terms and definitions, symbols, and abbreviations3.1 Terms and definitionsFor
34、 the purposes of this document, the terms and definitions in ISO 1452-1:2009 and the following apply.3.1.1nominal outside diameterdnnumerical designation of size which is common to all components in a thermoplastics piping system other than flanges and components designated by thread sizeNote 1 to e
35、ntry: It is a convenient round number for reference purposes.Note 2 to entry: For pipe conforming to ISO 161-1, the nominal outside diameter, expressed in millimetres, is the minimum mean outside diameter dem, min.3.1.2nominal wall thicknessenspecified wall thickness, in millimetresNote 1 to entry:
36、It is identical to the specified minimum wall thickness at any point ey,min.3.1.3nominal pressure (PN)alphanumeric designation related to the mechanical characteristics of the components of a piping system and used for reference purposes3.1.4hydrostatic pressurepinternal pressure applied to a piping
37、 system3.1.5working pressure (PFA)maximum pressure which a piping system can sustain in continuous use under given service conditions without pressure surgeNote 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
38、expressed in bars.2 ISO 2014 All rights reservedPD ISO/TR 4191:2014ISO/TR 4191:2014(E)3.1.6hydrostatic stressstress induced in the wall of a pipe when it is subjected to internal water pressureNote 1 to entry: The stress in megapascals is related to the internal pressure, p, in bars, the nominal wal
39、l thickness, en, in millimetres, and the nominal outside diameter of the pipe, dn, in millimetres by the following formula: =pdee()nnn20Note 2 to entry: If and p are given in the same units, the denominator becomes 2en.3.1.7long-term hydrostatic strength at 20 Clhtsquantity with the unit of stress,
40、i.e. MPa, which can be considered to be a property of the material under consideration and which represents the 97,5 % 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 pressureN
41、ote 1 to entry: ISO 9080 gives the possibility to extrapolate to 100 year lifetime.3.1.8lower confidence limit of the predicted hydrostatic strengthLPLquantity with the dimension of stress, which represents the 97,5 % lower confidence limit of the predicted hydrostatic strength for a single value at
42、 a temperature T and a time tNote 1 to entry: It is denoted as LPL= (T,t,0,975).Note 2 to entry: The value of this quantity is determined by the method given in ISO 9080.3.1.9minimum required strengthMRSvalue of LPLrounded to the next lower value of the R 10 series from ISO 3 when LPLis below 10 MPa
43、 or to the next lower value of the R 20 series when LPLis higher than 10 MPa3.1.10design coefficientCoverall 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 LPL3.1
44、.11pipe series Sdimensionless number for pipe designation (see ISO 4065)3.1.12standard dimension ratioSDRnumerical designation of a pipe series which is a convenient round number approximately equal to the dimension ratio of the nominal outside diameter, dn, and the nominal wall thickness, enNote 1
45、to entry: According to ISO 4065, the 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 SymbolsC design coefficientdeoutside diameter (at any point)demmean outside diameterdiinside diameter (
46、at any point)dimmean inside diameter of socketdnnominal (outside or inside) diameterDN nominal sizeE wall thickness (at any point)emmean wall thicknessennominal wall thicknessfAderating (oruprating) factor for applicationfTderating factor for temperatures material density hydrostatic stressP interna
47、l hydrostatic pressurepTtest pressure sdesign stressLPLstress at lower predicted confidence limit3.3 AbbreviationsLPL lower predicted confidence limitMRS minimum required strengthMOP maximum operating pressurePFA allowable operating pressurePEA allowable site test pressurePN nominal pressureDN nomin
48、al diameterPVC-U unplasticized poly(vinyl chloride)SDR standard dimension ratioPVC-O oriented poly(vinyl chloride)4 ISO 2014 All rights reservedPD ISO/TR 4191:2014ISO/TR 4191:2014(E)4 Parameters influencing design4.1 Allowable operating pressure4.1.1 Where pipe material temperatures do not exceed 25
49、 C, and where no extra safety considerations are applicable, nominal pressures are given in Table A.1 of ISO 1452-2:2009 and in Table 2 of ISO/DIS 16422:2013. These nominal pressures have been calculated on the basis of well-established data, taking into account a service life of at least 50 years of continuous operation. For common water supply systems up to 25 C, the allowable operating pressure PFA in bars (1 bar = 105 N/m2 = 0,1 MPa) is equal to the nominal
