DD-CEN-TS-14578-2003.pdf

DRAFT FOR DEVELOPMENT DD CEN/TS 14578:2003 Plastics piping systems for water supply or drainage and sewerage Glass-reinforced thermosetting plastics (GPR) based on unsaturated polyester resin (UP) Recommended practice for installation ICS 23.040.01; 91.140.80; 93.030 ? Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 03:00:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI DD CEN/TS 14578:2003 This Draft for Development was published under the authority of the Standards Policy and Strategy Committee on 7 November 2003 © BSI 7 November 2003 ISBN 0 580 42896 6 National foreword This Draft for Development is the official English language version of CEN/TS 14578:2003. It supersedes BS EN 1636-6:2001 which is withdrawn. This publication is not to be regarded as a British Standard. It is being issued in the Draft for Development series of publications and is of a provisional nature. It should be applied on this provisional basis, so that information and experience of its practical application may be obtained. Comments arising from the use of this Draft for Development are requested so that UK experience can be reported to the European organization responsible for its conversion to a European Standard. A review of this publication will be initiated 2 years after its publication by the European organization so that a decision can be taken on its status at the end of its 3-year life. Notification of the start of the review period will be made in an announcement in the appropriate issue of Update Standards. According to the replies received by the end of the review period, the responsible BSI Committee will decide whether to support the conversion into a European Standard, to extend the life of the Technical Specification or to withdraw it. Comments should be sent in writing to the Secretary of BSI Technical Committee PRI/88, Plastic piping systems, at British Standards House, 389 Chiswick High Road, London W4 4AL, giving the document reference and clause number and proposing, where possible, an appropriate revision of the text. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. Summary of pages This document comprises a front cover, an inside front cover, the CEN/TS title page, pages 2 to 8, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 03:00:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI TECHNICAL SPECIFICATION SPÉCIFICATION TECHNIQUE TECHNISCHE SPEZIFIKATION CEN/TS 14578 September 2003 ICS 23.040.01, 91.140.80, 93.030 Supersedes EN 1636-6:1997 English version Plastics piping systems for water supply or drainage and sewerage Glass-reinforced thermosetting plastics (GPR) based on unsaturated polyester resin (UP) Recommended practice for installation Systèmes de canalisations plastiques pour ladduction deau et lassainissement Plastiques thermodurcissables renforcés de verre (PRV) à base de résine de polyester non saturé (UP) Pratique recommandée pour la pose Kunststoft-Rohrleitungssysteme für den Wasserversorgung mit oder ohne Druck Glasfaserverstärkten duroplastischen Kunstoffe (GFK) auf der basis von ungesättigtem Polyesterharz (UP) Empfohlenes Verfahren zur Verlegung This Technical Specification (CEN/TS) was approved by CEN on 24 March 2003 for provisional application. The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to submit their comments, particularly on the question whether the CEN/TS can be converted into a European Standard. CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS available. It is permissible to keep conflicting national standards in force (in parallel to the CEN/TS) until the final decision about the possible conversion of the CEN/TS into an EN is reached. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels © 2003 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. CEN/TS 14578:2003 E Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 03:00:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI CEN/TS 14578:2003 (E) 2 Contentspage Foreword3 Introduction.4 1Scope5 2Normative references5 3Terms and definitions.5 4Procedures.5 4.1General.5 4.2Special conditions for pipes having a nominal stiffness less than SN 12505 5Specific information and recommendations5 5.1General.5 5.2Special transportation requirements 6 5.3Maximum storage heights on site 6 5.4Maximum storage period in direct sunlight 6 5.5Any climatic conditions requiring special storage 6 5.6Limiting deflections.6 5.7Coefficient of linear expansion.6 5.8Longitudinal tensile modulus and strength.7 5.9Suitability for use in areas exposed to sunlight7 5.10Appropriate jointing system7 5.11Cold bending7 5.12Permitted rates of loss of water and/or pressure.7 Bibliography8 Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 03:00:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI CEN/TS 14578:2003 (E) 3 Foreword This document (CEN/TS 14578:2003) has been prepared by Technical Committee CEN /TC 155, “Plastics piping systems and ducting systems“ the secretariat of which is held by NEN. This document supersedes EN 1636-6:1997 1. It is also the result of a merging of the final draft prEN 1115-6:1997 2 and the draft European standard prEN 1796-6:1995 3. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to announce this CEN Technical Specification: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and the United Kingdom. Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 03:00:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI CEN/TS 14578:2003 (E) 4 Introduction System Standards prEN 1796 4 and prEN 14364 5 specify the properties of a piping system and its components when made from glass-reinforced thermosetting plastics (GRP) based on unsaturated polyester resin (UP) intended to be used for pressure and non-pressure water or sewerage applications. A System Standard includes specifications for pipes, fittings and joints and makes reference to supporting standards covering test methods, recommended practices for installation (this Technical Specification) and procedures for assessment of conformity. The committee is preparing a standard to cover matters such as design procedures, determination of long-term safety factors based on a semi-probabilistic approach, surge allowance and allowable negative pressures for buried GRP pipe applications. Reference to this standard will be included in the document when available. This supporting standard, which covers practices for installation, is intended to be used in conjunction with ENV 1046 by, amongst others, end-users, authorities, design engineers, testing and certification institutes and manufacturers. In the event of ENV 1046 being withdrawn in the future, the relevant parts of ENV 1046 will be incorporated in this standard as an addendum, so that the appropriate requirements, which were implemented in ENV 1046, remain available and applicable to System Standards for applications using GRP-UP pipes and fittings. In this standard, much of the guidance is expressed as requirements, e.g. by use of “shall“ or by instructions in the imperative. It is strongly recommended that these be followed whenever applicable. Other guidance is presented for consideration as a matter of judgement in each case, e.g. by use of “should“. Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 03:00:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI CEN/TS 14578:2003 (E) 5 1 Scope This Technical Specification (CEN/TS) specifies recommended practices for installing piping systems made of glass-reinforced thermosetting plastics based on unsaturated polyester resin (GRP-UP), intended to be used for pressure or non-pressure water or sewerage applications. It is applicable to GRP-UP piping systems of nominal sizes from DN 100 to DN 3000 which are intended to be used for the conveyance of liquids at temperatures up to 50 ?C and at pressures of 0,5 bar and greater. NOTE 1 Piping systems conforming to prEN 1796 4 or prEN 14364 5 can also be used for above-ground applications provided the influence of the environment and the supports is considered in the design of the pipes and joints. NOTE 2 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 This Technical Specification 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 apply to this Technical Specification only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). ENV 1046:2001, Plastics piping and ducting systems Systems outside building structures for the conveyance of water or sewage Practices for installation above and below ground. 3 Terms and definitions For the purposes of this Technical Specification the terms and definitions given in ENV 1046:2001 apply. 4 Procedures 4.1 General Pipes and fittings covered by prEN 1796 4 or prEN 14364 5 shall be installed in accordance with ENV 1046 taking into account the following information and guidance. In conditions not covered thereby the engineer shall make his own recommendations. Attention is drawn to the limitations that may apply to negative pressure in service, in particular if the pipe zone backfill material is removed, and to mechanical compaction requirements during installation for pipe stiffness up to and including SN 5000 (see also ENV 1046). 4.2 Special conditions for pipes having a nominal stiffness less than SN 1250 Pipes having a nominal stiffness less than SN 1250 are not intended for laying directly in the ground. However, whenever they are installed in the ground they shall be encased in concrete. 5 Specific information and recommendations 5.1 General NOTE ENV 1046 requires the information given in 5.2 to 5.12 to be provided in this standard. Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 03:00:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI CEN/TS 14578:2003 (E) 6 5.2 Special transportation requirements When following the guidance given in ENV 1046 particular care shall be taken to avoid impact damage. Pipes and fittings shall be secured before transporting them to or around the site. 5.3 Maximum storage heights on site The number of layers in a storage stack should not exceed those given in Table 1, except in the case of pipes with a nominal stiffness greater than 2500, which may be stacked higher if precautions are taken to ensure that the stack is stable. Table 1 Maximum number of layers in a stack Nominal size DN Maximum number of layers 100 ? DN ? 300 300 DN ? 600 600 DN ? 900 900 DN ? 1400 1400 DN 5 4 3 2 1 5.4 Maximum storage period in direct sunlight When materials such as ultraviolet inhibitors have been incorporated or other protective pipe constructions have been used, pipes and fittings may be stored in direct sunlight for their design lives. Where the pipes and fittings are not thus protected they should not be exposed to sunlight for longer than two years. Care should be taken to protect rubber-sealing profiles from prolonged exposure to sunlight. 5.5 Any climatic conditions requiring special storage Apart from high winds, there are no climatic conditions that require special storage conditions for products conforming to prEN 1796 4 or prEN 14364 5. 5.6 Limiting deflections In no case shall the vertical diameter increase by more than 1,5 % of the mean diameter due to installation procedures e.g. the relative initial ovalization shall not exceed 1,5 %. This may be verified by measurements when the pipe zone backfilling operation is completed. Non-pressure pipes conforming to prEN 1796 4 or prEN 14364 5 usually have an allowable long-term deflection of 6 % and both pressure and non-pressure pipes have an allowable maximum initial deflection of 3 % for design purposes. The permitted initial deflections may need to be lower than 3 % depending upon the nature of the undisturbed native soil, the backfill material and degree of compaction. The initial deflection should be determined and monitored to assist in achieving a satisfactory installation. 5.7 Coefficient of linear expansion A typical range for the coefficient of linear expansion, ?, is 20 ? 10-6/°C to 50 ? 10-6/°C. This property varies with the nature and quantity of reinforcement in any particular pipe. The manufacturer shall provide the relevant information when requested by the purchaser. Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 03:00:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI CEN/TS 14578:2003 (E) 7 5.8 Longitudinal tensile modulus and strength These properties vary with the nature and quantity of reinforcement in any particular pipe. The manufacturer shall provide this information when requested by the purchaser. 5.9 Suitability for use in areas exposed to sunlight If it is intended to install the pipes in areas exposed to sunlight, the manufacturer should be informed so that he can ensure their suitability for this application. 5.10 Appropriate jointing system Joints described in