1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 295-2:2013Vitrified clay pipe systems for drains and sewersPart 2: Evaluation of conformity and samplingBS EN 295-2:2013 BRITISH STANDARDNational forewordThis British Stand
2、ard is the UK implementation of EN 295-2:2013. It supersedes BS EN 295-2:1991 and, together with BS EN 295-1:2013, BS EN 295-4:2013, BS EN 295-5:2013, BS EN 295-6:2013, and BS EN 295-7:2013, it supersedes BS EN 295-10:2005, which is withdrawn.The UK participation in its preparation was entrusted to
3、Technical Committee B/505, Wastewater engineering.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 provisions of a contract. Users are responsible for its correct application. The British
4、Standards Institution 2013. Published by BSI Standards Limited 2013.ISBN 978 0 580 70647 9 ICS 23.040.50; 91.140.80; 93.030 Compliance with a British Standard cannot confer immunityfrom legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Com
5、mittee on 28 February 2013.Amendments issued since publicationDate Text affectedBS EN 295-2:2013EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 295-2 February 2013 ICS 93.030 Supersedes EN 295-10:2005, EN 295-2:1991English Version Vitrified clay pipe systems for drains and sewers - Part 2: Eval
6、uation of conformity and sampling Systmes de tuyaux et accessoires en grs pour les rseaux de branchement et dassainissement - Partie 2: Evaluation de la conformit et chantillonnage Steinzeugrohrsysteme fr Abwasserleitungen und -kanle -Teil 2: Bewertung der Konformitt und Probenahme This European Sta
7、ndard was approved by CEN on 1 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 without any alteration. Up-to-date lists and bibliographical references concernin
8、g 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 language made by translation under the responsibility of a CEN member into it
9、s 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, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germa
10、ny, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR
11、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 295-2:2013: EBS EN 295-2:2013EN 295-2:2013 (E) 2 Contents Page Foreword . 3 1 Scope 4 2 Normative references . 4 3 Te
12、rms and definitions 5 4 Abbreviations . 5 5 Evaluation of conformity 5 5.1 General . 5 5.2 Initial type testing (ITT) and type testing (TT) . 6 5.2.1 General . 6 5.2.2 Sampling procedure . 6 5.2.3 Test reports 11 5.3 Factory production control (FPC) 12 5.3.1 General . 12 5.3.2 Requirements . 12 5.3.
13、3 Equipment 13 5.3.4 Raw materials and components 13 5.3.5 Product testing and evaluation . 13 5.3.6 Change in batch condition . 14 5.3.7 Records 14 5.3.8 FPC testing of pipes, special fittings, adaptors and compatible accessories manholes and inspection chambers, perforated pipes and jacking pipes
14、14 5.3.9 FPC testing of fittings according to EN 295-1:2013 and EN 295-5:2013 19 5.3.10 FPC testing of joint assemblies according to EN 295-1:2013 23 5.3.11 FPC of polyurethane sealing elements according to EN 295-1:2013, 6.1.2 . 23 5.3.12 FPC Testing of polypropylene sleeve couplings according to E
15、N 295-1:2013, 6.1.3 24 5.3.13 FPC of rigid fairing materials according to EN 295-1:2013, 6.1.4 . 26 5.3.14 FPC testing of adaptors and connectors to EN 295-4:2013, 5.7 . 26 5.3.15 FPC testing of metal banded flexible couplings and adaptors according to EN 295-4:2013, Annex A 27 5.3.16 FPC testing of
16、 connectors, insertable fittings and sealing rings for cut pipes for making connections to existing pipelines, manholes or building works according to EN 295-4:2013, Annex B . 28 5.3.17 FPC testing of heatshrinkable sleeves according to EN 295-4:2013, Annex C . 28 5.3.18 FPC testing of watertightnes
17、s of manholes and inspection chambers . 29 5.3.19 FPC testing of compressive strength of jacking pipes according to EN 295-7:2013 29 5.3.20 FPC testing of joint assemblies of jacking pipes according to EN 295-7:2013 . 29 Annex A (normative) Acceptability determination and switching rules . 31 A.1 Ge
18、neral . 31 A.2 Inspection by attributes . 31 A.2.1 Acceptability determination . 31 A.2.2 Operation of switching rules . 32 A.2.3 Tightened inspection for rejected batches . 32 A.3 Inspection by variables 32 A.3.1 Distribution . 32 A.3.2 Acceptability determination . 33 A.3.3 Operation of switching
19、rules . 33 Bibliography 38 BS EN 295-2:2013EN 295-2:2013 (E) 3 Foreword This document (EN 295-2:2013) has been prepared by Technical Committee CEN/TC 165 “Wastewater engineering”, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either
20、 by publication of an identical 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 C
21、ENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 295-2:1991 and together with EN 295-1:2013, EN 295-4:2013, EN 295-5:2013, EN 295-6:2013 and EN 295-7:2013 it supersedes EN 295-10:2005. This document has been prepared under a mandate give
22、n to CEN by the European Commission and the European Free Trade Association. The main changes with respect to the previous edition are listed below: clauses on Evaluation of conformity revised in accordance with the framework given by the CEN Construction sector; requirements for the resistance to h
23、igh pressure water jetting added; requirements for water absorption added. The standard series EN 295 “Vitrified clay pipe systems for drains and sewers“ consists of the following parts: Part 1: Requirements for pipes, fittings and joints Part 2: Evaluation of conformity and sampling (the present do
24、cument) Part 3: Test methods Part 4: Requirements for adaptors, connectors and flexible couplings Part 5: Requirements for perforated pipes and fittings Part 6: Requirements for components of manholes and inspection chambers Part 7: Requirements for pipes and joints for pipe jacking According to the
25、 CEN/CENELEC Internal Regulations, 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, Hu
26、ngary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 295-2:2013EN 295-2:2013 (E) 4 1 Scope This European Standard specifies requirements for the evalu
27、ation of conformity of products manufactured from vitrified clay and other materials (referred to as “products“) specified in the following standards: pipes, fittings and joints according to EN 295-1; adapters, connectors and flexible couplings according to EN 295-4; perforated pipes and fittings ac
28、cording to EN 295-5; components of manholes and inspection chambers according to EN 295-6; and pipes and joints for pipe jacking according to EN 295-7. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its appli
29、cation. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 295-1:2013, Vitrified clay pipe systems for drains and sewers Part 1: Requirements for pipes, fittings and joints EN 295-3:2012,
30、Vitrified clay pipe systems for drains and sewers Part 3: Test methods EN 295-4:2013, Vitrified clay pipe systems for drains and sewers Part 4: Requirements for adaptors, connectors and flexible couplings EN 295-5:2013, Vitrified clay pipe systems for drains and sewers Part 5: Requirements for perfo
31、rated pipes and fittings EN 295-6:2013, Vitrified clay pipes systems for drain and sewers Part 6: Requirements for components of manholes and inspection chambers EN 295-7:2013, Vitrified clay pipe systems for drains and sewers Part 7: Requirements for pipes and joints for pipe jacking EN 681-1, Elas
32、tomeric seals Materials requirements for pipe joint seals used in water and drainage applications Part 1: Vulcanized rubber EN 681-4, Elastomeric seals Materials requirements for pipe joint seals used in water and drainage applications Part 4: Cast polyurethane sealing elements EN ISO 10012, Measure
33、ment management systems Requirements for measurement processes and measuring equipment (ISO 10012) ISO 2859-1, Sampling procedures for inspection by attributes Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection ISO 3951 (all parts), Sampling procedures for i
34、nspection by variables BS EN 295-2:2013EN 295-2:2013 (E) 5 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 initial type testing complete set of tests or other procedures (e.g. calculation) described in the harmonised technical specification,
35、to determine the performance of samples of products representative of the product type Note 1 to entry: In the case of a CE marked product, the initial type testing provides the reference for the declared performance concerning the essential characteristics. 3.2 type testing test or series of tests
36、aimed at approving a project to determine that the element designed is able to fulfil the requirements of the product specification 3.3 factory production control permanent internal control of production exercised by the manufacturer 3.4 batch clearly identifiable collection of units manufactured es
37、sentially from the same materials and under the same conditions 3.5 isolated batch clearly identifiable collection of unassessed units manufactured essentially from the same materials but not necessarily all manufactured or fired at the same time 4 Abbreviations AQL Acceptance quality limit MDV Manu
38、facturers declared value FPC Factory production control PU Polyurethane PP Polypropylene 5 Evaluation of conformity 5.1 General The conformity of the products covered by this European Standard, with the requirements of the corresponding specific product standards (i.e. EN 295-1:2013, EN 295-4:2013,
39、EN 295-5:2013, EN 295-6:2013 and EN 295-7:2013) and with the declared values (including classes) shall be demonstrated by: initial type testing and type testing, factory production control by the manufacturer, including product assessment. The manufacturer shall always retain the overall control and
40、 shall have the necessary means to take responsibility for the product. BS EN 295-2:2013EN 295-2:2013 (E) 6 5.2 Initial type testing (ITT) and type testing (TT) 5.2.1 General Initial type testing and type testing shall be performed to demonstrate compliance of the products with the relevant specific
41、 product standards. All essential characteristics in bold in Table 1 for which the manufacturer declares performances, are subject to initial type testing. In addition, the need to perform Type Tests applies to the characteristics according to 5.2.2 and 5.2.3 when the manufacturer claims compliance,
42、 unless the standard gives provisions (e.g. use of previously existing data, CWFT and conventionally accepted performance) for declaring performances without performing tests. Tests previously performed in accordance with the provisions of this standard may be taken into account provided that they w
43、ere made to the same or a more rigorous test method, under the same system of attestation of conformity on the same product or products of similar design, construction and functionality, such that the results are applicable to the product in question. ITT shall be performed at the beginning of the p
44、roduction of a new type of the product or at the beginning of a new method of production, where this may affect the stated properties. Tests previously performed in accordance with the provisions of the specific product standard (i.e. same product, characteristic(s), test method, sampling procedure,
45、 system of attestation of conformity, etc.) may be taken into account for the ITT purpose of that specific product. Where components of the products are used whose characteristics have already been determined by the component manufacturer on the basis of conformity with other product standards, thes
46、e characteristics need not be reassessed provided that the components performance or method of assessment remain the same, the characteristics of the component are suitable for the intended end use of the finished product, and insofar as the manufacturing process does not have a detrimental effect o
47、n the determined characteristics. Components and raw materials, marked in accordance with appropriate harmonised European specifications, may be presumed to have performances as declared. However, this does not replace the responsibility of the product manufacturer to ensure that such products, as a
48、 whole, are correctly designed and their components have the necessary performance values to meet the design according to the relevant specific product standard. Tests shall be repeated for the appropriate characteristics wherever a change occurs in the product design, in the raw material or in the
49、supplier of the components, or in the production process, which could affect significantly one or more of the characteristics. Full reports of these tests shall be retained by the product manufacturer and shall be available for examination. Complete test reports shall be kept for at least 10 years. 5.2.2 Sampling procedure Test samples shall be selected from a batch at random, without any consideration given to the condition or quality of the selected products. Sampling shall be carried out in accor
