1、- STD-BSI BS EN 805-ENGL 2000 1624669 0872527 Lb2 111 BRITISH STANDARD Water supply - Requirements for systems and components outside buildings The European Standard EN 8052000 has the status of a British Standard ICs 23.040.01; 91.140.60 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPY
2、RIGHT LAW BS EN 805:2000 - STDeBSI BS EN 805-ENGL 2000 = 1624669 0872528 OT9 IBp BS EN 805:2000 been prepared under the Committee for Building and Civil Engineering, was published under the authority of the Standards Committee and comes into effect on 15 September 2000 direction of the Sector Amd. N
3、o. O BSI 09-2000 ISBN O 580 36369 4 National foreword Date Comments This British Standard is the official English language version of EN 8052000. The UK participation in its preparation was entrusted by Technical Committee B/504, Water supply, to Subcommittee BW1, Systems and components outside buil
4、dings, which has the responsibility to: - aid enquirers to understand the text; - present to the responsible European committee any enquiries on the - monitor related international and European developments and promulgate interpretation, or proposals for change, and keep the UK interests informed; t
5、hem in the UK. A list of organizations represented on this subcommittee can be obtained on 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 (ar), unde
6、r the tem of the Public Procurement and Works Directives, which are transposed into UK law by the Utilities Contracts Regulations 1996, the public Supply Contracts Regulations 1991 and the Public Works Contracts Regulations 1991 and “subject to ., the technical specilfications which Uze work or work
7、s to be carried out under a publ2c works contract SM be 23.040.01 English version Water supply - Requirements for systems and components outside buildings Alimentation en eau - Exigences pour les rseaux extrieurs aux btiments et leurs composants Wasserversorgung - Anforderungen an Wasserversorgungss
8、ysteme 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 CENICENELEC Internal Regulations which stipulate the conditions for giving this Europmn Standard the status of a national standard without any alteration
9、. Up-to-date lists and bibliographical references concerning uch 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, French, German). A version in any other language made by traislation
10、under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as tie official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy,
11、Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITEE FOR STANDARDIZATION EUROPISCHES KOMITEE FOR NORMUNG COMITE EUROPEN DE NORMALISATION Central Secretariat: rue de Stassart, 36 8-1050 Brussels O 2000 CEN All rights of exploitation in any form a
12、nd by any means reserved worldwide for CEN national Members. Ref. No. EN 805:2000 E STD=BSI BS EN 805-ENGL 2000 D 1624667 0872531 693 II Page 2 EN 805:2000 Contents Foreword - 4 Introduction 5 1 2 3 3.1 3.2 3.3 3.4 3.5 3.6 3.7 4 5 5.1 5.2 5.3 5.4 6 7 8 8.1 8.2 8.3 8.4 8.5 8.6 8.7 8.8 8.9 9 9.1 9.2 9
13、.3 9.4 9.5 9.6 9.7 9.8 9.9 9.1 o 9.1 1 9.12 9.13 Scope 6 Normative references . 7 Definitions *.- . 7 Pressures . 7 System .- 9 Components . _ 12 Diameters . 13 Installation . 13 Hydraulic design . 15 Structural design . 15 Application of standards and regulations 16 Requirements for water supply sy
14、stems 16 Water quality 16 Design life 17 Demand for water 17 System security - 17 Service objectives .- . 17 Rehabilitation 17 Design .-. . 18 Design objectives - . 18 Peak flow factors -. . 18 Hydraulic design .-. 18 Structural design . 20 System layout 22 Protection against aggressive environment
15、- . 24 Reservo rs .- 24 Pumping stations 24 Documentation -. 24 General requirements for product standards 24 General . 24 Materials . .- 25 Dimensions .- 25 Structural design - 26 Mechanical requirements - 27 Water tightness - 27 Joints ._ 27 Protective measures . 29 Durability .- 29 Test methods -
16、 29 Interconnection of products . - 31 Quality control .-. 31 Marking . _. 31 Q BSI 09-2000 io 10.1 10.2 10.3 10.4 10.5 10.6 10.7 i1 11.1 11.2 11.3 12 12.1 12.2 12.3 12.4 12.5 13 14 14.1 14.2 15 STD-BSI BS EN BOS-ENGL 2000 = Zb24bb9 0872532 52T II Page 3 EN 805:2000 Installation - 32 General require
17、ments . 32 Pipe trenches 33 Installation of pipeline components . 34 Pipe joints 35 Protection against corrosion and contamination -. 35 Embedment and main backfill . 36 Records of tests during installation . .- 37 Testing of pipelines - . 37 General requirements . 37 Safety . 37 Pressure test . 39
18、Disinfection . . 42 General . 42 Selection of disinfectant 43 Microbiological clearance and reporting . - 44 Additional requirements . - . 44 Operation . 44 Inspection and monitoring . - . 44 Maintenance 45 Updating of documentation . - . 45 Preparation for disinfection . 42 Disinfection procedures
19、. 43 Annex A (informative) Guidance to EN 805 . 46 Annex B (informative) Adeviations . - . 63 Annex C (informative) Bibliography . - 64 Q BSI 09-2000 - STD-BSI BS EN 805-ENGL 2000 m Lh24bb9 0872533 466 m Page 4 EN 805:2000 Foreword This European Standard has been prepared by Technical Committee CEN/
20、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 text or by endorsement, at the latest by July 2000, and conflicting national standards shall be withdrawn at the latest by
21、July 2000. According to the CENICENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands,
22、Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Q BSI 09-2000 STD-BSI BS EN 805-ENGL 2000 Lb24bb 0872534 3T2 Page 5 EN 8052000 Introduction In specifying the requirements of this standard due regard has been taken of the importance of a reliable and safe supply of water for huma
23、n consumption as well as for the purpose of trade, industry, agriculture and fi re-fig h t ing . The widely varying water supply legislative requirements, populations, social and climatic conditions across Europe have also been taken into account. This standard does not make any implication with reg
24、ard to ownership of or responsibility for pipes or other apparatus in the supply system. Q BSI 09-2000 - STD-BSI BS EN 805-ENGL 2000 M Lb24667 0872535 239 Page 6 EN 805:2000 I Scope This standard specifies: - general requirements for water supply systems outside buildings (see Figure l), including p
25、otable 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 which are mo
26、re 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 modific
27、ation and/or rehabilitation of existing water supply systems. NOTE there are no significant detrimental effects on water quantity, security, reliability and adequacy of the supply. It is not intended that existing water supply systems are to be altered to comply with this standard, provided that I I
28、 I I I Key 1 Field of application of this standard A Figure 1 - Field of application of this standard 8 BSI 092000 STD-BSI BS EN 805-ENGL 2000 lb24bb9 0872536 175 9 Page 7 EN 805:2000 2 Normative references This European Standard incorporates, by dated or undated reference, provisions from other pub
29、lications. 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 the European Standard only when incorporated in it by amendment or revisi
30、on. For undated references the latest edition of the publication 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 4501
31、 I, General criteria for certification bodies operating product certification. EN 4501 2, General criteria for certification bodies operating quality system certification. IS0 48, Rubber, vulcanized or thermoplastic - Determination of hardness (hardness between 10 IRHD and 100 IRHD). EN IS0 9001, Qu
32、alify systems - Model for quality assurance in design/deve/opment, production, installation and servicing. EN IS0 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 Press
33、ures For the designation of pressures in English, French and German see table 1 and annex A.2. Q BSI 09-2000 STD-BSI BS EN 805-ENGL 2000 Lb24bb9 0872537 001 U Abbreviationa DP Page 8 EN 805:2000 English French design pressure pression de calcul en rgime permanent Table 1 - Designation of pressures i
34、n English, French and German MDP STP maximum design pression maximale de pressure calcul pression d?preuve du rseau system test pressure German I PEA Systembetriebsdruck allowable site test pression d?preuve zulssiger related pressure admissible sur chantier Bauteilprfdruck auf der Baustelle OP hchs
35、ter System betriebsdruck Systemprfdruck I System operating pressure pression de 1 Betriebsdruck fonctionnement System related SP allowable operating pression de admissible allowable maximum pression maximale operating pressure admissible pressure fonctionnement service pressure pression de service V
36、ersorgungsdruck related zulssiger Bauteilbetriebsdruck hchster zulssiger Bauteilbetriebsdruck Component 3.1 .I 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 pr
37、essure (PFA) maximum hydrostatic pressure that a component is capable of withstanding 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 inte
38、grity 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 zo
39、ne fixed by the designer considering future developments and including surge, where: - MDP is designated MDPa, when there is a fixed allowance for surge; - MDP is designated MDPc, when the surge is calculated O BSI 09-2000 STD.BSI BS EN 805-ENGL 2000 E 3624667 0872536 148 Page 9 EN 805:2000 3.1.6 op
40、erating pressure (OP) internal pressure which occurs at a particular time and at a particular point in the water supply system 3.1.7 pressure zones areas of pressure ranges within a water supply system 3.1.8 service pressure (SP) internal pressure delivered at the point of connection to the consumer
41、s installation at zero Row in the service pipe 3.1.9 surge rapid fluctuations of pressure caused by flow alterations over short periods of time 3.1 .I O system test pressure (STP) hydrostatic pressure applied to a newly laid pipeline in order to ensure its integrity and tightness 3.2 System 3.2.1 gr
42、avity system system where flow and/or pressure are caused by the force of gravity. There are two kinds of such systems: - pressurized gravity system, where the pipeline operates full; - non-pressurized gravity system, where the pipeline operates partially full. 3.2.2 local main water main which conn
43、ects principal main) with service pipes 3.2.3 potable water water intended for human consumption as defined by the relevant national authorities 3.2.4 principal main water main serving as a principal distributor within the supply area, normally without direct consumer connections 3.2.5 pumped and gr
44、avity system system where the gravity system and the pumped system are used, either separately or in combination, to provide the flow and/or pressure 3.2.6 pumping station pumping installation designed to provide adequate pressure and flow within the distribution system. Three types can be distingui
45、shed (see Figure 2): - main lift, normally at the outlet of the treatment works, or source if there is no treatment, to provide flow to the service reservoir: - intermediate to deliver flow on the way to a service reservoir or supply area; - booster to pump directly from and to the area without stor
46、age. O BSI 09-2000 STD=BSI BS EN 805-ENGL 2000 M Lb24bb9 0872539 98LI llB Page 10 EN 805:2000 Key 1 Main lift 2 Intermediate 3 Booster Figure 2 - Example of different types of pumping stations 3.2.7 pumped system system where flow and/or pressure are provided by means of one or more pumps and where
47、the pipeline operates full 3.2.8 reservoir storage facility for water 3.2.9 service pipe water pipe which supplies water from the local main to the consumer 3.2.1 O service reservoir covered reservoir for potable water which includes water compartment(s), control building, operation equipment and ac
48、cess arrangement providing reserve supplies, pressure stability and balancing demand fluctuations 3.2.1 1 standby plant plant or system, such as additional pumps or duplicate mains, installed to provide secondary means for the supply of services in the event of failure or malfunction of the normal o
49、perating unit Q BSI 09-2000 STD.BS1 BS EN 805-ENGL 2000 9 3624bb9 0872540 bTb Page 11 EN 805:2000 3.2.12 trunk main water main which interconnects source(s), treatment works, reservoir(s) and/or supply areas, normally without direct consumer connection(s) 3.2.13 water distribution system part of the water supply system comprising pipelines, service reservoirs, pumping stations and other assets by which water is distributed to the consumers. It begins at the outlet from the water treatment works (or source, if t
