1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 805:2000 The Europe
2、an Standard EN 805:2000 has the status of a British Standard ICS 23.040.01; 91.140.60 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Water supply Requirements for systems and components outside buildingsThis British Standard, having been prepared under the direction of the Se
3、ctor Committee for Building and Civil Engineering, was published under the authority of the Standards Committee and comes into effect on 15 September 2000 BSI 09-2000 ISBN 0 580 36369 4 BS EN 805:2000 Amendments issued since publication Amd. No. Date Comments National foreword This British Standard
4、is the official English language version of EN 805:2000. The UK participation in its preparation was entrusted by Technical Committee B/504, Water supply, to Subcommittee B/504/1, Systems and components outside buildings, which has the responsibility to: aid enquirers to understand the text; present
5、 to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this subcommittee can be obtained on
6、request to its secretary. Presumption of conformity to European legislative requirements When the reference to this European Standard has been published in the Official Journal of the European Union (OJ), under the terms of the Public Procurement and Works Directives, which are transposed into UK la
7、w by the Utilities Contracts Regulations 1996, the Public Supply Contracts Regulations 1991 and the Public Works Contracts Regulations 1991 and: “subject to ., the technical specifications which the work or works to be carried out under a public works contract shall be defined by reference to any Eu
8、ropean specifications which are relevant”, this standard should be called up in specifying all qualifying contracts. Outside the scope of the Public Procurement Directive (PPD), and the UK Regulations transposing the PPD, this standard has no mandatory application, unless called up within a contract
9、, other than as representing currently accepted good practice. Representation of good practice International co-operation in the development of European Standards inevitably requires compromise in the course of reaching agreement. The UK was prominent in the development of EN 805:2000 and, despite s
10、ome reservations, voted in favour of its acceptance at CEN formal vote. Any future development of the standard will build upon the shared agreement of its current contents. However, the current contents should not be taken to represent the full body of good practice guidance that exists on installat
11、ion methods. Reference may also be made to documentation developed by UK Water Companies, which in turn may reference accepted sector and professional publications.BS EN 805:2000 BSI 09-2000 i Interpretation The UK Technical Committee offers the following advice in respect of the contents of this st
12、andard. 1. Water for fire-fighting Subclause 5.3.2 of this document specifies that water for fire-fighting purposes should be determined in accordance with national legislation or local regulations. There is currently no national legislation or local regulations in the UK determining the quantity of
13、 water to be provided for fire-fighting but attention is drawn to the national guidance document on the provision of water for fire-fighting published jointly by the Local Government Association and Water UK in December 1998 and available for download from the Water UK internet site at http:/www.wat
14、er.org.uk/forum/ftp/. 2. Service objectives Clause 6 of this document requires the water supplier to define the levels of service to be achieved at the point of connection to the consumers installation. For water suppliers in England and Wales minimum levels of service are set by legislation in the
15、Water Supply and Sewerage Services (Customer Services Standards) Regulations 1989. 3. Rehabilitation Due to the rapid development of rehabilitation techniques the document gives no detailed requirements for the renovation of mains. It is important to note the use of the word “relevant” in clause 7.
16、4. General dimensions for product standards Dimensions Subclause 9.3.1 of this document specifies two series of nominal sizes (DN) for components in the range 20 mm to 4 000 mm for internal (DN/ID) and external diameter (DN/OD). The subclause refers specifically to requirements to be observed in the
17、 drafting of product standards and therefore does not preclude the acceptance of any sizes which may appear in such product standards. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogu
18、e under 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 corr
19、ect application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 64, an inside back cover and a back cover. The BSI copyright not
20、ice displayed in this document indicates when the document was last issued.ii blankEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 805 January 2000 ICS 13.060.01; 23.040.01 English version Water supply - Requirements for systems and components outside buildings Alimentation en eau - Exigences p
21、our les rseaux extrieurs aux btiments et leurs composants Wasserversorgung - Anforderungen an Wasserversorgungssysteme und deren Bauteile auerhalb von Gebuden This European Standard was approved by CEN on 7 June 1999. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which st
22、ipulate the conditions for giving this European 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
23、 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 its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standard
24、s bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NOR
25、MUNG Central Secretariat: rue de Stassart, 36 B-1050 Brussels 2000 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 805:2000 EPage 2 EN 805:2000 BSI 09-2000 Contents Foreword 4 Introduction . 5 1 Scope. 6 2 Normative references 7 3
26、Definitions. 7 3.1 Pressures 7 3.2 System. 9 3.3 Components . 12 3.4 Diameters 13 3.5 Installation 13 3.6 Hydraulic design 15 3.7 Structural design 15 4 Application of standards and regulations . 16 5 Requirements for water supply systems. 16 5.1 Water quality. 16 5.2 Design life . 17 5.3 Demand for
27、 water. 17 5.4 System security 17 6 Service objectives 17 7 Rehabilitation 17 8 Design . 18 8.1 Design objectives. 18 8.2 Peak flow factors 18 8.3 Hydraulic design 18 8.4 Structural design 20 8.5 System layout. 22 8.6 Protection against aggressive environment . 24 8.7 Reservoirs. 24 8.8 Pumping stat
28、ions . 24 8.9 Documentation . 24 9 General requirements for product standards .24 9.1 General 24 9.2 Materials 25 9.3 Dimensions. 25 9.4 Structural design 26 9.5 Mechanical requirements 27 9.6 Water tightness 27 9.7 Joints. 27 9.8 Protective measures 29 9.9 Durability. 29 9.10 Test methods 29 9.11 I
29、nterconnection of products . 31 9.12 Quality control 31 9.13 Marking 31 10 Installation 32 10.1 General requirements 32 10.2 Pipe trenches 33 10.3 Installation of pipeline components. 34 10.4 Pipe joints . 35 10.5 Protection against corrosion and contamination. 35Page 3 EN 805:2000 BSI 09-2000 10.6
30、Embedment and main backfill 36 10.7 Records of tests during installation. 37 11 Testing of pipelines . 37 11.1 General requirements 37 11.2 Safety 37 11.3 Pressure test 39 12 Disinfection. 42 12.1 General 42 12.2 Preparation for disinfection 42 12.3 Selection of disinfectant . 43 12.4 Disinfection p
31、rocedures 43 12.5 Microbiological clearance and reporting. 44 13 Additional requirements 44 14 Operation 44 14.1 Inspection and monitoring 44 14.2 Maintenance . 45 15 Updating of documentation 45 Annex A (informative) Guidance to EN 805 46 Annex B (informative) A-deviations 63 Annex C (informative)
32、Bibliography .64Page 4 EN 805:2000 BSI 09-2000 Foreword This European Standard 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 national standard, either by publication of an identical
33、 text or by endorsement, at the latest by July 2000, and conflicting national standards shall be withdrawn at the latest by July 2000. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Aus
34、tria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom.Page 5 EN 805:2000 BSI 09-2000 Introduction In specifying the requirements of this standard due regard has b
35、een taken of the importance of a reliable and safe supply of water for human consumption as well as for the purpose of trade, industry, agriculture and fire-fighting. The widely varying water supply legislative requirements, populations, social and climatic conditions across Europe have also been ta
36、ken into account. This standard does not make any implication with regard to ownership of or responsibility for pipes or other apparatus in the supply system.Page 6 EN 805:2000 BSI 09-2000 1 Scope This standard specifies: general requirements for water supply systems outside buildings (see Figure 1)
37、, including potable water mains and service pipes, service reservoirs, other facilities and raw water mains but excluding treatment works and water resources development; general requirements for components; general requirements for inclusion in product standards which may include specifications whi
38、ch are more stringent; requirements for installation, site testing and commissioning. The requirements of this standard apply to: the design and construction of new water supply systems; the extension of significant areas forming a coherent part of an existing water supply system; significant modifi
39、cation and/or rehabilitation of existing water supply systems. NOTE It is not intended that existing water supply systems are to be altered to comply with this standard, provided that there are no significant detrimental effects on water quantity, security, reliability and adequacy of the supply. Ke
40、y 1 Field of application of this standard Figure 1 - Field of application of this standardPage 7 EN 805:2000 BSI 09-2000 2 Normative references This European Standard incorporates, by dated or undated reference, provisions from other publications. These normative references are cited at the appropri
41、ate 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 the European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publicatio
42、n referred to applies. EN 1295-1, Structural design of buried pipelines under various conditions of loading - Part 1: General requirements. EN 1508, Water supply - Requirements for systems and components for the storage of water. EN 45011, General criteria for certification bodies operating product
43、certification. EN 45012, General criteria for certification bodies operating quality system certification. ISO 48, Rubber, vulcanized or thermoplastic - Determination of hardness (hardness between 10 IRHD and 100 IRHD). EN ISO 9001, Quality systems - Model for quality assurance in design/development
44、, production, installation and servicing. EN ISO 9002, Quality systems - Model for quality assurance in production, installation and servicing. 3 Definitions For the purposes of this standard, the following definitions apply. 3.1 Pressures For the designation of pressures in English, French and Germ
45、an see table 1 and annex A.2.Page 8 EN 805:2000 BSI 09-2000 Table 1 - Designation of pressures in English, French and German Abbreviation a English French German DP design pressure pression de calcul en rgime permanent Systembetriebsdruck MDP maximum design pressure pression maximale de calcul hchst
46、er Systembetriebsdruck System STP system test pressure pression dpreuve du rseau Systemprfdruck related PFA allowable operating pressure pression de fonctionnement admissible zulssiger Bauteilbetriebsdruck PMA allowable maximum operating pressure pression maximale admissible hchster zulssiger Bautei
47、lbetriebsdruck Component PEA allowable site test pressure pression dpreuve admissible sur chantier zulssiger Bauteilprfdruck auf der Baustelle related OP operating pressure pression de fonctionnement Betriebsdruck System SP service pressure pression de service Versorgungsdruck related aValid for all
48、 language versions. 3.1.1 allowable maximum operating pressure (PMA) maximum pressure occurring from time to time, including surge, that a component is capable of withstanding in service 3.1.2 allowable operating pressure (PFA) maximum hydrostatic pressure that a component is capable of withstanding
49、 continuously in service 3.1.3 allowable site test pressure (PEA) maximum hydrostatic pressure that a newly installed component is capable of withstanding for a relatively short duration, in order to ensure the integrity and tightness of the pipeline 3.1.4 design pressure (DP) maximum operating pressure of the system or of the pressure zone fixed by the designer considering future developments but excluding surge 3.1.5 maximum design pressure (MDP) maximum operating pressure of the system or of the pressure zone fixed by the
