1、BRITISH STANDARD BS EN 512:1995 Incorporating Amendment No. 1 Fibre-cement products Pressure pipes and joints The European Standard EN 512:1994, with the incorporation of amendment A1:2001, has the status of a British Standard UDC 621.643.2: 621.643.05: 621.1/.3: 666.961 NO COPYING WITHOUT BSI PERMI
2、SSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS EN 512:1995 This British Standard, having been prepared under the direction of the Sector Board for Building and Civil Engineering, was published under the authority of the Standards Board and comes into effect on 15 August 1995 BSI 23 January 2002 The fo
3、llowing BSI references relate to the work on this standard: Committee reference B/504 Draft for comment 91/14764 DC ISBN 0 580 24217 X Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee B/504, Water supply, upon which the fo
4、llowing bodies were represented: Association of Consulting Engineers Association of Manufacturers of Domestic Unvented Supply Systems Equipment (MODUSSE) British Bathroom Council British Foundry Association British Non-ferrous Metals Federation British Plastics Federation British Plumbing Fittings M
5、anufacturers Association Department of the Environment Department of the Environment (Drinking Water Inspectorate) Fibre Cement Manufacturers Association Limited Institute of Plumbing Institution of Water and Environmental Management Local Authority Organizations Scottish Association of Directors of
6、 Water and Sewerage Services Water Companies Association Water Research Centre Water Services Association of England and Wales The following bodies were represented in the drafting of the standard, through subcommittees and panels: Association of Metropolitan Authorities British Precast Concrete Fed
7、eration Ltd. Concrete Pipe Association Concrete Society Department of Transport Federation of Civil Engineering Contractors Institution of Civil Engineers Institution of Highways and Transportation Amendments issued since publication Amd. No. Date Comments 13467 23 January 2002 Additions to Annex CB
8、S EN 512:1995 BSI 23 January 2002 i Contents Page Committees responsible Inside front cover National foreword ii Foreword 2 Text of EN 512 3BS EN 512:1995 ii BSI 23 January 2002 National foreword This British Standard has been prepared by Technical Committee B/504 and is the English language version
9、 of EN 512:1994 Fibre-cement products Pressure pipes and joints, including amendment A1:2001, published by the European Committee for Standardization (CEN). EN 512 was published as a result of international discussion in which the UK took an active part. This standard supersedes BS 486:1990 which is
10、 withdrawn as a result of this publication. This standard together with a number of other ENs will form a comprehensive series of standards in the field of concrete pressure pipes. The manufacture of all asbestos products is covered by the requirements of The Control of Asbestos at Work Regulations
11、1987, introduced on 1 March 1988. These set out comprehensive provisions covering work activities involving exposure to asbestos. Advice on how to comply with these regulations can be obtained from the manufacturers of the material, from the Asbestos Information Centre Ltd, Derby Road, Cheshire WH8
12、9ND, from the local area office of the Health and Safety Executive or from the Environmental Health Department of the Local Authority. WARNING. Breathing asbestos dust is dangerous to health and precautions have to be taken during the manufacture and use of these products. Particular note has to be
13、taken of the Asbestos Products (Safety) Regulations 1985, made under the Consumer Safety Act 1978, and of the Asbestos (Prohibitions) (Amendment) Regulations 1988 1) , made under the Health and Safety at Work etc. Act 1974, which prohibit the supply of products containing amosite or crocidolite and
14、set out requirements for the labelling of all products containing asbestos. All the above legislation implements EEC Directives. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue unde
15、r the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct ap
16、plication. Compliance with a British Standard does not of itself confer immunity from legal obligations. 1) Parallel regulations for Northern Ireland came into force on 6 March 1986. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pag
17、es 2 to 23 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 512 August 1994 + A1 August 2001 UDC 621.643.2: 621.643.05: 621.1/.3: 666.961 Descriptors: Water distribution, pressure pi
18、pes, asbestos cement products, pipes, tubes, joints, classification, characteristics, dimensions, tests, marking English version Fibre-cement products Pressure pipes and joints (includes amendment A1:2001) Produits en fibre-ciment Tuyaux pression et joints (inclut lamendement A1:2001) Faserzement-Pr
19、odukte Druckrohre und Verbindungen (enthlt nderung A1:2001) This European Standard was approved by CEN on 1994-08-09. Amendment A1:2001 was approved by CEN on 2001-06-23. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
20、 Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, Fr
21、ench, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland,
22、 France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brusse
23、ls 1994 Copyright reserved to CEN members Ref. No. EN 512:1994 + A1:2001 EEN 512:1994 BSI 23 January 2002 2 Foreword This European Standard has been prepared under a mandate given to CEN by the Commission of the European Communities and the European Free Trade Association, and supports essential req
24、uirements of EC Directive(s). This European Standard was prepared by Working Group 6 under the direction of CEN Technical Committee CEN/TC 164, Water supply, the Secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publication of a
25、n identical text or by endorsement, at the latest by February 1995, and conflicting national standards shall be withdrawn at the latest by February 1995. This standard will be brought in line with prEN 805 Water supply Requirements for external systems and components, prepared by CEN/164/WG 1, when
26、issued. In this standard a distinction has been made between product appraisal (type tests) and routine quality control requirements (acceptance tests). Attention is drawn to the need for observance of EC and/or EFTA and national legal requirements restricting the use of certain materials and to the
27、 related marking and labelling requirements. Fibre-cement pressure pipes and joints which are in permanent or in temporary contact with water intended for human consumption shall not adversely affect the quality of the drinking water and do not contravene the EC Directives and EFTA Regulations on th
28、e quality of drinking water. The performance of a network constructed with these products depends not only on the properties of the product as required by this standard, but also on the design, construction and performance of the network as a whole in relation to the environment and conditions of us
29、e (standards covering these matters are in preparation). According to the CEN/CENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Po
30、rtugal, Spain, Sweden, Switzerland, United Kingdom. Foreword to amendment A1 This amendment EN 512:1994/A1:2001 to the EN 512:1994 has been prepared by Technical Committee CEN/TC 164, Water supply, the Secretariat of which is held by AFNOR. This European Standard shall be given the status of a natio
31、nal standard, either by publication of an identical text or by endorsement, at the latest by February 2002, and conflicting national standards shall be withdrawn at the latest by February 2002. This amendment to the European Standard EN 512:1994 has been prepared under a mandate given to CEN by the
32、European Commission and the European Free Trade Association, and supports essential requirement of EU Directives(s). According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cze
33、ch Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom.EN 512:1994 BSI 23 January 2002 3 Contents Page Foreword 2 1S c o p e 4 2 Normative references 4 3 Definitions 4 3.1 nominal d
34、iameter (DN) 4 3.2 nominal pressure (PN) 4 3.3 test pressure in factory (PT) 4 3.4 bursting pressure (PB) 4 3.5 acceptance test 5 3.6 type test 5 3.7 acceptable quality level (AQL) 5 4P i p e s 5 4.1 Composition 5 4.2 Classification 5 4.3 General appearance and finish 6 4.4 Smoothness of internal su
35、rface 6 4.5 Characteristics 7 4.6 Test methods 10 4.7 Marking 15 5J o i n t s 1 6 5.1 Material 16 5.2 Geometrical characteristics 16 5.3 Special joints 16 5.4 Physical characteristics watertightness 16 5.5 Watertightness test 16 5.6 Marking 17 6 Special applications 17 7 Quality control 17 7.1 Facto
36、ry quality control 17 7.2 Third party certification 18 7.3 Inspection of a consignment of finished products 18 Page Annex A (normative) Receiving inspection for products which are not subject to third party certification 19 Annex B (informative) Working on-site 19 Annex C (informative) A-deviations
37、20 Figure 1 Nominal dimensions 8 Figure 2 Measurement of the straightness 11 Figure 3 Length of the press blocks 14 Figure 4 Bending test machine 15 Table 1 Pressure classification 6 Table 2 Pressure relationship 6 Table 3 Nominal diameters (DN) 7 Table 4 Tolerances on thickness in millimetres 8 Tab
38、le 5 Tolerances on straightness 9 Table 6 Minimum breaking loads 9 Table 7 Test piece lengths 12 Table 8 Width of the upper press block 13 Table 9 Minimum sampling schemes 18EN 512:1994 4 BSI 23 January 2002 1 Scope This standard specifies the characteristics of fibre-cement pipes and joints for use
39、 under pressure for conveying potable and non potable water and sewage. It is concerned with composition, classification, geometrical, mechanical and physical characteristics, acceptance tests and type tests. NOTE Other media may be conveyed provided it is compatible with the fibre-cement pipes and
40、joints. A full discussion should take place between the customer and the manufacturer to determine if the pipes and joints need additional protection. 2 Normative references This European standard incorporates by dated or undated reference, provisions from other publications. These normative referen
41、ces 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 European standard only when incorporated in it by amendment or revision. For undated references the la
42、test edition of the publication referred to applies. ENV 197-1:1992, Cement Composition, specifications and conformity criteria Part 1: Common cements. prEN 805, Water supply Requirements for external systems and components. prEN 1295, Structural design of buried pipelines under various conditions o
43、f loading. EN 29001:1990, Quality systems Model for quality assurance in design, development, production, installation and servicing. EN 29002:1990, Quality systems Model for quality assurance in production and installation. ISO 390:1993, Products in fibre reinforced cement Sampling and inspection.
44、ISO 2785:1986, Directives for selection of asbestos-cement pipes subject to external loads with or without internal pressure. ISO 2859-1:1989, Sampling procedures for inspection by attributes Part 1: Sampling plans indexed by acceptable quality level (AQL) for lot-by-lot inspection. ISO 3951:1989, S
45、ampling procedures and charts for inspection by variables for percent non-conforming. ISO 7337:1984, Asbestos reinforced cement products Guidelines for on-site work practices. 3 Definitions For the purposes of this standard the following definitions apply. 3.1 nominal diameter (DN) a numerical desig
46、nation of size of a component, which is a convenient round number approximately equal to the manufacturing dimension in mm of the internal diameter 3.2 nominal pressure (PN) a numerical designation of pressure used for reference purposes related to the mechanical characteristics of a component 3.3 t
47、est pressure in factory (PT) value of the hydrostatic pressure to which the components are tested in the factory according to 4.6.4 3.4 bursting pressure (PB) value of the hydrostatic pressure at which a component fails when tested in the factory according to 4.6.5EN 512:1994 BSI 23 January 2002 5 3
48、.5 acceptance test test to establish whether a batch of products conforms to a specification. The tests are performed on samples drawn either from continuous production or from a consignment NOTE Test methods, specification and limit values are given in this standard. Sampling levels and acceptance
49、criteria are defined in ISO 390. 3.6 type test test carried out for the approval of a new product and/or when a fundamental change is made in formulation and/or method of manufacture the effects of which cannot be predicted on the basis of previous experience the test is performed on the as delivered product; it is required to demonstrate conformity of the generic product to a specification but is not required for each production batch 3.7 acceptable quality level (AQL) the quality level which, in a sampling pla
