BS EN 1508-1999 Water supply - Requirements for systems and components for the storage of water《供水 储水系统和组件的要求》.pdf

1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 1508:1999 The Europ

2、ean Standard EN 1508:1998 has the status of a British Standard ICS 13.060.20 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Water supply Requirements for systems and components for the storage of waterBS EN 1508:1999 This British Standard, having been prepared under the direc

3、tion of the Sector Committee for Building and Civil Engineering, was published under the authority of the Standards Committee and comes into effect on 15 March 1999 BSI 03-1999 ISBN 0 580 30991 6 Amendments issued since publication Amd. No. Date Text affected National foreword This British Standard

4、is the English language version of EN 1508:1998. The UK participation in its preparation was entrusted by Technical Committee B/504, Water supply, to Subcommittee B/504/1, Water supply External systems and components, which has the responsibility to: aid enquirers to understand the text; present to

5、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 requ

6、est to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of t

7、he 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 application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Su

8、mmary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 17 and a back cover.CEN European Committee for Standardization Comite Europe en de Normalisation Europa isches Komitee fu r Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1998

9、 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1508:1998 E EUROPEAN STANDARD EN 1508 NORME EUROPE ENNE EUROPA ISCHE NORM September 1998 ICS 13.160.20 Descriptors: water distribution, water supply, storage, storage tanks, exterior

10、, buildings, specifications, design, leaktightness, inspection, tests, safety, operating requirements, repairs English version Water supply Requirements for systems and components for the storage of water Alimentation en eau Prescriptions pour les syste mes et les composants pour le stockage de leau

11、 Wasserversorgung Anforderungen an Systeme und Bestandteile der Wasserspeicherung This European Standard was approved by CEN on 24 July 1998. 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 nat

12、ional 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, French, German). A version in a

13、ny 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, Czech Republic, Denmark, Finland, France, Germ

14、any, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.Page 2 EN 1508:1998 BSI 03-1999 Foreword This European Standard has been prepared by Technical Committee CEN/TC 164, Water supply, the Secretariat of which is held by AFNOR.

15、 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 March 1999, and conflicting national standards shall be withdrawn at the latest by March 1999. According to the CEN/CENELEC Internal Regulations, t

16、he 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, Norway, Portugal, Spain, Sweden, Switzerland and the United Kin

17、gdom. Contents Page Foreword 2 Introduction 3 1 Scope 3 2 Normative references 3 3 Definitions 3 3.1 capacity 3 3.2 compartment 3 3.3 control building 3 3.4 designer 3 3.5 elevated reservoir 3 3.6 rehabilitation 3 3.7 repair 3 3.8 reservoir 3 3.9 service reservoir 3 3.10 water demand 3 3.11 watertig

18、htness 3 4 Application of standards and regulations 4 5 General requirements 4 5.1 General 4 5.2 Functional requirements 5 6 Design requirements 7 6.1 Watertightness 7 6.2 Structural design 7 6.3 Further provisions 8 7 General requirements for product standards 8 8 Checks, testing and commissioning

19、8 Page 8.1 General considerations 8 8.2 Checks for movement 8 8.3 Watertightness tests 9 8.4 Cleaning and disinfection 9 8.5 Commissioning 10 9 Operational requirements 10 9.1 Introduction 10 9.2 Maintenance 10 9.3 Cleaning and disinfection 10 10 Rehabilitation and repair requirements 11 10.1 Introd

20、uction 11 10.2 Survey 11 10.3 Prevention of contamination 11 10.4 Return to service 11 Annex A (informative) Guidance to EN 1508 12 A.1 ad 5.1.1 Functions 12 A.2 ad 5.1.2 Decision criteria and system configuration 12 A.3 ad 5.2.2.1 Access and security 12 A.4 ad 5.2.2.4 Monitoring 12 A.5 ad 8.1.2 Hyg

21、iene and 8.1.3 Safety of personnel 15 A.6 ad 8.3.4 Test report and 8.4.4 Records Example of a test procedure report 15 A.7 ad 9.1.4 Operating manual 17Page 3 EN 1508:1998 BSI 03-1999 Introduction In specifying the requirements of this standard, due regard has been taken of the importance of a reliab

22、le and safe supply of water for human consumption as well as for the purposes of trade, industry, agriculture and fire fighting. The widely varying water supply legislative requirements, populations, social and climatic conditions across Europe have also been taken into account. 1 Scope This standar

23、d specifies and gives guidance on: general requirements for storage of water outside consumers buildings, including service reservoirs for potable water and reservoirs containing water not for human consumption at intake works or within treatment works, excluding those that are part of the treatment

24、 process; design; general requirements for product standards; requirements for checks, testing and commissioning; operational requirements; requirements for rehabilitation and repair. The requirements of this standard are applicable to: the design and construction of new reservoirs; the extension an

25、d modification of existing reservoirs; significant rehabilitation of existing reservoirs. NOTE 1 It is not intended that existing reservoirs are to be altered to comply with this standard, provided that there are no significant detrimental effects on water quality. NOTE 2 This standard does not appl

26、y to reservoirs formed by the building of dams or the use of lakes for water storage purposes. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and

27、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 latest edition of the publication referred to applies. prE

28、N 805:1996, Water supply Requirements for systems and components outside buildings. 3 Definitions For the purposes of this standard, the following definitions apply. 3.1 capacity the total volume of the compartment(s) which can be used for the operation of a reservoir 3.2 compartment self-contained

29、part of a reservoir which has separate inlet, outlet, overflow and washout arrangements, and can be operated independently from other compartments of the same reservoir (see Figures 1 and 2) 3.3 control building self-contained part of a reservoir used to accommodate the main valves, pumps, controls

30、and monitoring equipment and which can provide the means of access to the water compartment(s) 3.4 designer the person responsible for establishing, with the purchaser or water company, the basic criteria to be used for the design, construction, commissioning and operation of the reservoir 3.5 eleva

31、ted reservoir a reservoir constructed with the compartment(s) at ground level, but at an elevation sufficient to provide water by gravity to the supply area 3.6 rehabilitation work necessary to upgrade or improve a reservoir to comply with this standard 3.7 repair work necessary to remedy a defect a

32、nd restore a reservoir to satisfactory operation 3.8 reservoir storage facility for water 3.9 service reservoir covered storage facility for potable water which includes water compartment(s), control building, operation equipment and access arrangements, providing reserve supplies and pressure stabi

33、lity, and balancing demand fluctuations (see Figure 1) 3.10 water demand estimated quantity of water required per unit of time 3.11 watertightness the characteristic quality of the structure that prevents the passage of water through the structure in excess of any permitted quantityPage 4 EN 1508:19

34、98 BSI 03-1999 1 ventilation 8 inlet 2 max. water level 9 outlet 3 max. operational water level 10 by-pass valve 4 capacity 11 sump 5 max. water depth 12 washout/overflow 6 sloping floor 13 underfloor drains (if required) 7 overflow 14 perimeter drain (if required) Figure 1 Simplified section throug

35、h a service reservoir 4 Application of standards and regulations In all aspects, including health and safety, the national standards, transposing European Standards as available shall apply as well as the regulations valid at the place where the system is being constructed and/or operated. 5 General

36、 requirements 5.1 General This standard is written principally for application to service reservoirs. In the case of other reservoirs the designer or operator will determine which parts of the standard shall apply e.g. disinfection may not be required for reservoirs containing water not for human co

37、nsumption. 5.1.1 Functions (See also A.1.) The purpose of service reservoirs is to store the necessary amount of water required for water supply in the area concerned. To achieve this their functions include: to equalize the difference between water intake and output and to cover peaks in demand; to

38、 maintain the required pressure in the water distribution systems; to keep stocks in reserve in case of plant malfunctions and interruptions in the water distribution systems; to provide water for fire fighting in accordance with local requirements.Page 5 EN 1508:1998 BSI 03-1999 5.1.2 Decision crit

39、eria and system configuration (See also A.2.) Important decision criteria are: security of supply and water quality; overall cost of construction, operation and maintenance; integration into the water supply system; town and landscape planning. The above-mentioned criteria can be achieved by elevate

40、d service reservoirs, water towers or by low level service reservoirs with pumping systems. Service reservoirs may be designed as buried, partially buried or above ground structures. The construction of an elevated service reservoir is advisable if suitable high ground is available. The construction

41、 of a water tower may be considered where the necessary ground elevation at a suitable point near the supply area is not available for an elevated service reservoir. A pumping station with a low level service reservoir is a viable option if measures have been taken to ensure continuity of power supp

42、ly. Service reservoirs are mainly constructed from reinforced or pre-stressed concrete. They may also be constructed using steel, glass fibre reinforced plastics or other appropriate materials. 5.2 Functional requirements 5.2.1 Functional requirements Water quality 5.2.1.1 General Service reservoirs

43、 shall be designed, constructed and operated to prevent contamination or other chemical, physical and biological changes that are detrimental to the water quality. (Refer to water quality regulations.) 5.2.1.2 Materials Materials which meet appropriate test requirements and which will not cause the

44、stored water to fail to comply with the requirements of appropriate EU Directives or EFTA Regulations shall be used in the structure of the water compartments and in the surfaces in contact with the stored water. Concrete and cement mortars generally satisfy this requirement but special care shall b

45、e taken if additives are used. In order to facilitate subsequent cleaning and to avoid bacterial growth, internal surfaces shall be as smooth and pore-free as possible. This can be achieved by high quality concrete finishes or by the application of suitable coatings or linings. All metallic parts vu

46、lnerable to corrosion shall be protected. 5.2.1.3 Water circulation Stagnant zones shall be minimized. This can be achieved by suitable design of the physical shape of the water compartments and the arrangement of inlet and outlet pipework for the particular storage capacity. 5.2.1.4 Ventilation Ven

47、tilation facilities are required in the water compartments in order to permit air movement caused by changing water levels. This may be achieved by natural or forced ventilation. If specified by the designer measures shall be taken to safeguard and control the quality of the air entering or leaving

48、the service reservoir. 5.2.1.5 Prevention of contamination Service reservoirs shall be designed to prevent the ingress of external water or other contaminants either through the structure or any opening, entrance or pipework. Permanent exposure of the water to daylight shall be avoided. Entrances an

49、d ventilation equipment shall also be designed so that the water cannot be contaminated (e.g. by polluted air, dust, insects and other animals). Design may specify that openings shall not be positioned directly above the free water surface. Wherever positioned they shall be arranged in such a way that no extraneous matter is able to enter the compartment and that all external interference is impeded. 5.2.1.6 Temperature effects There shall be no unacceptable alteration to the stored water caused by heat or cold