1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 1796:2013Plastics piping systems forwater supply with or withoutpressure Glass-reinforcedthermosetting plastics(GRP) based on unsaturatedpolyester resin (UP)BS EN 1796:2013
2、 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 1796:2013. Itsupersedes BS EN 1796:2006+A1:2008 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee PRI/88/2, Plastics piping for pressure applications.A list of organiza
3、tions represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2013. Published by BSI StandardsLimited 2013ISBN
4、978 0 580 75372 5ICS 23.040.20; 23.040.45Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 March 2013.Amendments issued since publicationDate Text affectedBS EN 1
5、796:2013EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1796 February 2013 ICS 23.040.01 Supersedes EN 1796:2006+A1:2008English Version Plastics piping systems for water supply with or without pressure - Glass-reinforced thermosetting plastics (GRP) based on unsaturated polyester resin (UP) Sys
6、tmes de canalisations en plastiques pour lalimentation en eau avec ou sans pression - Plastiques thermodurcissables renforcs de verre (PRV) base de rsine polyester non satur (UP) Kunststoff-Rohrleitungssysteme fr die Wasserversorgung mit oder ohne Druck - Glasfaserverstrkte duroplastische Kunststoff
7、e (GFK) auf der Basis von ungesttigtem Polyesterharz (UP) This European Standard was approved by CEN on 14 December 2012. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard witho
8、ut any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other l
9、anguage made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Den
10、mark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTE
11、E FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1796:2013: EBS EN 1796:2013EN 1796:2013 (
12、E) 2 Contents Page Foreword . 5 Introduction 6 1 Scope . 7 2 Normative references 8 3 Terms, definitions and symbols . 9 4 General requirements . 16 4.1 Classification 16 4.1.1 General . 16 4.1.2 Categories 16 4.1.3 Nominal size . 16 4.1.4 Nominal stiffness . 16 4.1.5 Nominal pressure . 16 4.2 Mater
13、ials . 17 4.2.1 General . 17 4.2.2 Reinforcement 17 4.2.3 Resin . 17 4.2.4 Aggregates and fillers 18 4.2.5 Elastomers 18 4.2.6 Metals 18 4.3 Wall construction . 18 4.3.1 Inner layer . 18 4.3.2 Structural layer . 18 4.3.3 Outer layer 18 4.4 Appearance 18 4.5 Reference conditions for testing . 19 4.5.
14、1 Temperature . 19 4.5.2 Properties of water for testing . 19 4.5.3 Loading conditions 19 4.5.4 Preconditioning 19 4.5.5 Measurement of dimensions 19 4.6 Elapsed time for determination of long-term properties, (x) 19 4.7 Joints 19 4.7.1 General . 19 4.7.2 Types of joint 19 4.7.3 Flexibility of the j
15、ointing system 19 4.7.4 Sealing ring. 20 4.7.5 Adhesives . 20 5 Pipes 20 5.1 Geometrical characteristics . 20 5.1.1 Diameter 20 5.1.2 Wall thickness 25 5.1.3 Length . 25 5.2 Mechanical characteristics 26 5.2.1 Initial specific ring stiffness . 26 5.2.2 Long-term specific ring stiffness under wet con
16、ditions . 27 5.2.3 Initial resistance to failure in a deflected condition 28 5.2.4 Ultimate long-term resistance to failure in a deflected condition 30 5.2.5 Initial specific longitudinal tensile strength 31 BS EN 1796:2013EN 1796:2013 (E) 3 5.2.6 Initial failure and design pressures for pressure pi
17、pes 33 5.2.7 Long-term failure pressure 35 5.3 Marking . 36 6 Fittings . 37 6.1 General 37 6.2 Bends 38 6.2.1 Classification of bends . 38 6.2.2 Dimensions and tolerances of bends 38 6.3 Branches . 41 6.3.1 Classification of branches . 41 6.3.2 Dimensions and tolerances of branches . 42 6.4 Reducers
18、 . 44 6.4.1 Classification of reducers 44 6.4.2 Dimensions and tolerances of reducers 45 6.4.3 Mechanical characteristics of tapered section laminate. 46 6.5 Non Pressure Saddles 47 6.5.1 Classification of saddles 47 6.5.2 Dimensions and tolerances of saddles . 48 6.6 Flanges . 48 6.6.1 Classificati
19、on of flanges . 48 6.6.2 Dimensions and tolerances for flanged adaptors . 49 6.7 Marking . 51 7 Joint performance . 52 7.1 General 52 7.1.1 Interchangeability . 52 7.1.2 Test temperature 52 7.1.3 Non-pressure piping . 52 7.2 Dimensions . 52 7.3 Non-end-load-bearing flexible joints with elastomeric s
20、ealing rings . 52 7.3.1 General 52 7.3.2 Requirements . 52 7.3.3 Number of test pieces for type test purposes . 53 7.3.4 Test pieces 53 7.4 End-load-bearing flexible joints with elastomeric sealing rings 54 7.4.1 General 54 7.4.2 Performance requirements for locked-socket-and-spigot joints with elas
21、tomeric sealing rings 54 7.5 Wrapped or cemented joints 56 7.5.1 General 56 7.5.2 Performance requirements 56 7.5.3 Number of test pieces for type test purposes . 57 7.5.4 Test pieces 57 7.6 Bolted flange joints 58 7.6.1 General 58 7.6.2 Performance requirements 58 7.6.3 Number of test pieces for ty
22、pe test purposes . 59 7.6.4 Test pieces 59 7.6.5 Joint assembly details 59 7.6.6 Torque resistance . 59 Annex A (normative) Test method for the resistance to bending and pressure of end-thrust loaded joints in pipe systems . 61 A.1 Principle 61 A.2 Apparatus . 61 A.3 Test pieces 62 A.4 Test temperat
23、ure 62 BS EN 1796:2013EN 1796:2013 (E) 4 A.5 Calculation of the bending load F . 62 A.5.1 General . 62 A.5.2 Calculation of F, if applied in the horizontal plane . 62 A.5.3 Calculation of F, if applied in the vertical plane 63 A.6 Procedure . 64 A.7 Test report 64 Bibliography 66 BS EN 1796:2013EN 1
24、796:2013 (E) 5 Foreword This document (EN 1796:2013) has been prepared by Technical Committee CEN/TC 155 “Plastics piping systems and ducting systems”, the secretariat of which is held by NEN. This European Standard shall be given the status of a national standard, either by publication of an identi
25、cal text or by endorsement, at the latest by August 2013, and conflicting national standards shall be withdrawn at the latest by August 2013. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held res
26、ponsible for identifying any or all such patent rights. This document supersedes EN 1796:2006+A1:2008. The following list is a list of significant technical changes that have been made since the previous edition: g16 changes to many test method references to the more up to date ISO methods; g16 exte
27、nsion of the diameter range to 4 000 mm; g16 completion of the axial strength tables for all PN classes; g16 restructure of the fittings section to be more practical; g16 update of the joint testing criteria. This European Standard is a system standard for plastics piping systems using glass-reinfor
28、ced thermosetting plastics based on polyester resin (GRP-UP), for water supply with or without pressure. System standards are based on the results of the work being undertaken in ISO/TC 138 “Plastics pipes, fittings and valves for the transport of fluids“, which is a Technical Committee of the Inter
29、national Organization for Standardization (ISO). They are supported by separate standards on test methods, to which references are made throughout the system standard. System standards are consistent with standards on general functional requirements. According to the CEN/CENELEC Internal Regulations
30、, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, L
31、atvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 1796:2013EN 1796:2013 (E) 6 Introduction This system standard specifies the properties of a piping system and its components when
32、made from glass-reinforced thermosetting plastics (GRP) based on unsaturated polyester resin (UP) intended to be used for water supply with or without pressure. The working group responsible for this European Standard is currently working on a test method and requirements for assessing resistance to
33、 impact damage. When this work is completed, it may result in additional requirements being incorporated into this European Standard. This European Standard was prepared recognising the guidelines of EN 476 1. BS EN 1796:2013EN 1796:2013 (E) 7 1 Scope This European Standard specifies the required pr
34、operties of the piping system and its components made from glass-reinforced thermosetting plastics (GRP) based on unsaturated polyester resin (UP) intended to be used for water supply (drinking or raw) with or without pressure. In a pipework system, pipes and fittings of different nominal pressure a
35、nd stiffness ratings may be used together. It is the responsibility of the purchaser or specifier to make the appropriate selections taking into account their particular requirements and any relevant national regulations and installation practices or codes. This European Standard is applicable to GR
36、P-UP, with flexible or rigid joints (see 3.33 and 3.34), primarily intended for use in buried installations. NOTE Piping systems conforming to this European Standard can also be used for non-buried applications provided that the influence of the environment, e.g. from UV-radiation, and the supports
37、are considered in the design of the pipes, fittings and joints. It is applicable to pipes, fittings and their joints of nominal sizes from DN 100 to DN 4000, which are intended to be used for the conveyance of water at temperatures up to 50 C, with or without pressure. This European Standard covers
38、a range of nominal sizes, nominal stiffnesses and nominal pressures. This European Standard is applicable to fittings made using any of the following techniques: a) fabricated from straight pipe; b) moulded by: 1) filament winding; 2) tape winding; 3) contact moulding; 4) hot or cold press moulding.
39、 This European Standard is applicable to the joints to be used in GRP-UP piping systems to be used for the conveyance of water, both buried and non-buried. It is applicable to joints, which are or are not intended to be resistant to axial loading. It covers requirements to prove the design of the jo
40、int. It specifies type test performance requirements for the following joints as a function of the declared nominal pressure rating of the pipeline or system: c) socket-and-spigot (either integral with pipe or sleeve coupling) or mechanical joint; d) locked socket-and-spigot joint; e) cemented or wr
41、apped joint; f) bolted flange joint. Recommended practices for the installation of buried pipes made in accordance with this standard is addressed in CEN/TS 14578. Guidelines for the structural analysis of buried GRP-UP pipelines are addressed in CEN/TS 14807. Guidance for the Assessment of Conformi
42、ty of products made in accordance with this standard is addressed in CEN/TS 14632. BS EN 1796:2013EN 1796:2013 (E) 8 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only
43、the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 681-1, Elastomeric seals Materials requirements for pipe joint seals used in water and drainage applications Part 1: Vulcanized rubber EN 1119, Plastics piping syst
44、ems Joints for glass-reinforced thermosetting plastics (GRP) pipes and fittings Test methods for leaktightness and resistance to damage of non-thrust resistant flexible joints with elastomeric sealing elements EN 1447, Plastics piping systems Glass-reinforced thermosetting plastics (GRP) pipes Deter
45、mination of long-term resistance to internal pressure CEN/TS 14578, 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 CEN/TS 14632, Plastics piping systems fo
46、r drainage, sewerage and water supply, pressure and non-pressure Glass reinforced thermosetting plastics (GRP) based on unsaturated polyester resin (UP) Guidance for the assessment of conformity CEN/TS 14807, Plastics piping systems Glass-reinforced thermosetting plastics (GRP) based on unsaturated
47、polyester resin (UP) Guidance for the structural analysis of buried GRP-UP pipelines EN ISO 75-2:2004, Plastics Determination of temperature of deflection under load Part 2: Plastics, ebonite and long-fibre-reinforced composites (ISO 75-2:2004) EN ISO 527-4, Plastics Determination of tensile propert
48、ies Part 4: Test conditions for isotropic and orthotopic fibre-reinforced plastic composites (ISO 527-4) EN ISO 527-5, Plastics Determination of tensile properties Part 5: Test conditions for unidirectional fibre-reinforced plastic composites (ISO 527-5) EN ISO 1452-3, Plastics piping systems for wa
49、ter supply and for buried and above-ground drainage and sewerage under pressure g127 Unplasticized poly(vinyl chloride) (PVC-U) g127 Part 3: Fittings (ISO 1452-3) EN ISO 3126, Plastics piping systems Plastics components Determination of dimensions (ISO 3126) ISO 2531, Ductile iron pipes, fittings, accessories and their joints for water applications ISO 4200, Plain end steel tubes, welded and seamless General tables of dimensions and masses per unit length ISO 7432, Glass-reinforced thermosetting plastics (GRP) pipes and fitti
