1、I BS EN STD.BSI BS EN 1444-ENGL 2001 1624bb9 0891558 745 BRITISH STANDARD Fibre-cernent pipelines - Guide for laying and on-site work practices The European Standard EN 1444:2000 has the status of a British Standard ICs 23.040.50 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PER.MIlTED BY COPYRIGHT LA
2、W National foreword been prepared under the direction of the Sector AmaNo. Date Committee for Building and Civil Engineering, was pubiished under the authority of the Standards Committee and comes into effect on 16 February 2001 Q BSI 02-2001 This British Standard is the officiai English language ve
3、rsion of EN 1444.2000. The UK participation in its preparation was entrusted by Technical Committee W54, Water supply, to Subcommittee BW6, Fibrecement pipes, which has the responsibility to: Comments - aid enquirers to understand the te - present to the responsible European committee any enquiries
4、on the interpretation, or proposals for change, and keep the UK inkrests informed; - monitor related intemational and European developments and promulgate them in the UK A list of organizatons represented on this subcommittee can be obtained on request to its secretary. Cross-references The British
5、Standards which implement inkmational 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“ faciiity of the BSI Standards Electronic Catalogue. A British Stan
6、dard does not purport to include all the necessary provisions of a contract. Usen of British standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover,
7、an inside front cover, the EN title page, pages 2 to 39 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. ISBN O 580 36913 7 STDsBSI BS EN 1444-ENGL ZOO1 m Lb24669 0891560 3T3 m EUROPEAN STANDARD EN 1444 NORME EUROPENNE EUROPISCHE NORM
8、 December 2000 ICs 23.040.50 English version Fibre-cement pipelines - Guide for laying and on-site work practices Conduites en fibres-ciment - Guide pour la pose et le travail sur chantier Faserzement-Rohrleitungen - Hinweise fr die Verlegung und fr die bauseitige Bearbeitung This European Standard
9、was approved by CEN on 27 November 2000. CEN members are bound to comply with the CEWCENELEC 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 concerning such
10、 national standards may be obtained on application to the 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 its own language and
11、 notified to the Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netheiiands, Noway, Portugal, Spain, Sweden, Switzerland
12、 and United Kingdom. EUROPEAN COMMiTEE FOR STANDARDIZATION EUROPISCHES KOMITEE FUR NORMUNG COMITE EUROPEEN DE NORMALISATION Management Centre: rue de Stassart, 36 6-1050 Brussels Q 2000 CEN Ail rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No.
13、EN 1444:2000 E Page 2 EN 1444:2000 Contents Page Foreword 4 Introduction . 5 1 2 3 3.1 3.2 3.3 3.4 3.5 3.6 3.7 4 4.1 4.2 4.3 5 5.1 5.2 5.3 5.4 6 7 7.1 7.2 7.3 8 8.1 8.2 8.3 8.4 8.5 8.6 9 9.1 9.2 9.3 9.4 10 10.1 10.2 11 11.1 11.2 11.3 11.4 12 13 Scope 6 Normative references 6 Terms and definitions 6
14、Pressures 6 System 8 Components . 10 Diameters 12 Installation 12 Hydraulic design 13 Structural design . 13 General requirements 14 Qualifications . 14 Rules for the execution of construction work 14 Health and safety . 14 General recommendations 15 Off-loading 15 Stacking of pipes . 15 Storage of
15、joints and fittings 16 Stringing out . 16 Types of beddings and embedments 16 Bedding type A is the general recommended way for laying fibre-cement pipes 16 Bedding type B . 17 Bedding type C is recommended in laying condition which require special design consideration 18 Excavation and preparation
16、of the trench . 19 General recommendations 19 Distances from underground installation . 19 Trench width . 19 Trench depth 19 Preparation of trench bottom . 20 Pre-laying inspection of components. lowering pipes. joints and fittings into the trench 20 General recommendations 20 Lowering with ropes 21
17、 Lowering with mechanical equipment . 21 Pipe laying 21 General recommendations 21 Special laying conditions 22 Jointing . 23 General requirements 23 Unrestrained joints 24 Restrained joints 24 Lubrificant for joints 24 House service connections 24 Transport. handling and storage 15 Depth of cover 1
18、9 Lowering by hand 21 Anchorages 24 13.1 13.2 14 14.1 14.2 15 16 16.1 16.2 16.3 16.4 16.5 16.6 17 17.1 17.2 17.3 STD.BSI BS EN 1444-ENGL 2002 - I1624669 0891562 17b Page 3 EN 1444:2000 Direct connection . 24 Indirect connection 25 Embedment and backfilling 25 Partial backfilling . 25 Backfilling aft
19、er pressure testing . 25 Working processes and recommended tools . 25 Tool specification 26 General recommendations . 26 Lathe cutter. lathe, hole cutter . 27 Jig saw 29 Low speed circular saw 29 Chain cutter 30 Abrasive discs 30 Dust extraction equipment . 31 Cleaning and disposal of the waste . 32
20、 Characterlstlcs . 31 Recommendations . 31 Annex A (informative) A-deviations . 33 Page 4 EN 1444:2000 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
21、national standard, either by publication of an identical text or by endorsement, at the latest by June 2001, and conflicting national standards shall be withdrawn at the latest by June 2001. According to the CENKENELEC Internal Regulations, the national standards organizations of the following count
22、ries 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 Kingdom. Annex A is informative. STDmBSI BS EN 1444-ENGL 2001
23、 1624669 0873564 T49 = Page 5 EN 1444:2000 Introduction In respect of potential adverse effects on the quality of water intended for human consumption, caused by the product covered by this standard : 1) this standard provides no information as to whether the product may be used without restriction
24、in any of the Member States of the EU or EFTA ; 2) it should be noted that, while awaiting the adoption of verifiable European criteria, existing national regulations concerning the use and/or the characteristics of this product remain in force. . STDmBSI BS EN LY44-ENGL 2001 1624667 0871565 785 = P
25、age 6 EN 1444:2000 1 Scope This draft European Standard, applies to both types of fibre-cement pipes AT and NT as defined in EN 512:1994, gives installation recommendations for this pipelines in above or below ground situations. It complements the general principles for all types of water supply sys
26、tems specified in EN 805:2000, Water supply - Requirements for systems and components outside buildings”, and should be used in conjunction with that standard. This standard gives guidance in on-site working methods and in the selection and use of approved tools for cutting and machining fibre-cemen
27、t pipes. This standard does not cover the following : a) installation by thrust boring and pipe jacking methods which require the use of highly specialized techniques ; b) problems caused by the use of special installations procedures (e.g. removal of pile sheeting in very deep trenches, etc.). 2 No
28、rmative 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 the publications are listed hereafter. For dated references, subsequent amendments to or revisions
29、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 (including amendments). EN 512:1994, Fibre-cement products - Pressure pipes and joints. EN 805:2000, Wa
30、ter supply - Requirements for systems and components outside buildings, EN 1 295-1 , Structural design of buried pipelines under various conditions of loading - Part 1: General requirements. IS0 2785, Directives for selection of asbestos-cernent pipes subject to external loads with or without intern
31、al pressure. 3 Terms and definitions For the purposes of this European Standard, the following terms and definitions apply: 3.1 Pressures For the designation of pressures in English, French and German see table 1 and EN 805:2000 annex A. STD.BSI ES EN 1444-ENGL 2OOL Lb24bb9 08915bb BLL Abbreviation
32、a I English I French I German I Page 7 EN 1444:2000 MDP STP Table 1 - Designation of pressures in English, French, German maximum design pression maximale de hchster System pressure calcul System betriebsdruck system test pression dpreuve du Systemprfdruck related pressure rseau design pressure pres
33、sion de calcul en regime permanent DP PFA allowable operating pressure pression de fonctionnement admissible zulssiger Bauteilbetriebsdruck PMA PEA OP allowable maximum operating pressure allowable site test pressure operating pressure pression maximale admissible pression dpreuve admissible sur cha
34、ntier pression de fonctionnement hchster zulssiger Bauteilbetriebsdruck Componen SP service pressure pression de service Versorgungsdruck related a Valid for all language versions. 3.1.1 allowable maximum operating pressure (PMA) maximum pressure occuring from time to time, including surge, that a c
35、omponent is capable of withstanding in service 3.1.2 allowable operating pressure (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 o
36、f 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 pr
37、essure (MDP) maximum operating pressure of the system or of the pressure zone fixed by the designer considering future developments and including surge, where : - MDP is designed MDPa when there is a fixed allowance for surge ; - MDP is designed MDPc when the surge is calculated. 3.1.6 operating pre
38、ssure (OP) internal pressure which occurs at a particular time and at a particular point in the water supply system Page 8 EN 1444:2000 3.1.7 pressure zones areas of pressure ranges within a water supply systems 3.1.8 service pressure (SP) internal pressure delivered at the point of connection to th
39、e consumers installation at zero flow in the service pipe 3.1.9 surge rapid fluctuations of pressure caused by flow alterations over short periods of time 3.1.1 O system test pressure (STP) hydrostatic pressure applied to a newly laid pipeline in order to ensure its integrity and tightness 3.2 Syste
40、m 3.2.1 gravity 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, wherethe pipeline operates partially full. 3.2.2 local main water main
41、 which connects 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 pu
42、mped and gravity 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 b
43、e distinguished (see Figure 1) : - 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 th
44、e area without storage. 3.2.7 pumped system system where flow and/or pressure are provided by means of one or more pumps and where 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 r- 1 Key 1 M
45、ain lift 2 Intermediate 3 Booster Figure 1 - Example of different types of pumping stations 3.2.1 O service reservoir covered reservoir for potable water which includes water compartment(s), control building, operation equipment and access arrangement providing reserve supplies, pressure stability a
46、nd 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 operating unit 3.2.1 2 trunk main water main which interconnects s
47、ource), treatment works, reservoir(s) and/or supply areas, normally without direct consumer connection(s) 3.2.13 water distribution system pari of the water supply system comprising pipelines, service reservoirs, pumping stations and other assets by which water is distributed to the consumers. It be
48、gins at the outlet from the water treatment works (or source, if there is no treatment) and ends at the point of connection to the consumers installation (see Figure 2) STD.BS1 BS EN 1444-ENGL 2002 1b24Lb DB15b9 520 Page 10 EN 1444:2000 I I Network Principal main Local main Supply area Service reser
49、voir (may be present) Trunk main Source or treatment works Service pipe Consumer Figure 2 - Example of a water distribution system 3.3 Components 3.3.1 accessories components, other than pipes, fittings or valves, which are used in a pipeline, glands, bolts, locking rings for joints, ferrules 3.3.2 adjustable joint joint which permits significant angular deflection at the time of installation but not thereafter 3.3.3 coating additional material applied to the external surface of a component to protect it from corrosion, mechanical damage or ch
copyright@ 2008-2019 麦多课文库（www.mydoc123.com）网站版权所有
备案/许可证编号：苏ICP备17064731号-1