1、DEUTSCHE NORM March 2001 Fi bre-cement pipelines Guide for laying and on-site work practices English version of DIN EN 1444 I DIN - I ENI444 ICs 23.040.50 Faserzement-Rohrleitungen - Hinweise fr die Verlegung und fr die bauseitige Bearbeitung European Standard EN 1444 : 2000 has the status of a DIN
2、Standard. A comma is used as the decimal marker. National foreword This standard has been prepared by CEN/TC 164 Water supply (Secretariat: France). The responsible German body involved in its preparation was the Normenausschuss Wasserwesen (Water Practice Standards Committee), Technical Committee R
3、ohrleifungsbau. EN comprises 37 pages. No pari of this standard may be reproduced without the prior permission of Y Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany, s the exclusive right of sale for German Standards (DIN-Normen). Ref. No. DIN EN 1444 : 2001 -0 E
4、nglish price group 15 Sales No. 11 15 07.01 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1444 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 die bauseiti
5、ge Bearbeitung Faserzement-Rohrleitungen - Hinweise fr die Verlegung und fr This European Standard was approved by CEN on 2000-1 1-27. CEN members are bound to comply with the CENKENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national st
6、andard without any alteration. Up-to-date lists and bibliographical references concerning such national stand- ards may be obtained on application to the Management Centre or to any CEN member. The European Standards exist in three official versions (English, French, German). A version in any other
7、language made by translation under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, the Czech Republic, Denmark, Finland, France, Germany, Gr
8、eece, Iceland, Ireland, Italy, Luxembourg, the Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, and the United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Management Centre: rue de Stassart 36, B-1050 Brussels O 2000. CE
9、N - All rights of exploitation in any form and by any means reserved worldwide for CEN national members. Ref. No. EN 1444 : 2000 E Page 2 EN 1444 : 2000 Contents Page Foreword 3 Introduction . 3 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
10、.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 4 Normative references 4 Terms and definitions 4 Pressures 4 System 6 Components . 8 Diameters 10 Installation 10 Hydraulic design 11 Structural design . 11 General requirements 12 Qualifications . 12 Rules for the execution of con
11、struction work 12 Health and safety . 12 Transport, handling and storage 13 General recommendations 13 Off-loading 13 Stacking of pipes . 13 Storage of joints and fittings 14 Stringing out . 14 Types of beddings and embedments 14 Bedding type A is the general recommended way for laying fibre-cement
12、pipes 14 Bedding type B . 15 Bedding type C is recommended in laying condition which require special design consideration 16 Excavation and preparation of the trench . 17 General recommendations 17 Depth of cover 17 Distances from underground installation . 17 Trench width . 17 Trench depth 17 Prepa
13、ration of trench bottom . 18 Pre-laying inspection of components, lowering pipes, joints and fittings into the trench 18 General recommendations 18 Lowering by hand 19 Lowering with ropes 19 Lowering with mechanical equipment . 19 Pipe laying 19 General recommendations 19 Special laying conditions 2
14、0 Jointing . 21 General requirements 21 Unrestrained joints 22 Restrained joints 22 Lubrificant for joints 22 Anchorages 22 House service connections 22 Page 3 EN 1444 : 2000 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 Direct connection . 22 Indirect connection 23 Em
15、bedment and backfilling 23 Partial backfilling . 23 Backfilling after pressure testing . 23 Working processes and recommended tools . 23 Tool specification 24 General recommendations . 24 Lathe cutter, lathe, hole cutter . 25 Jig saw 27 Low speed circular saw 27 Chain cutter 28 Abrasive discs . . .
16、. . . 28 Dust extraction equipment . 29 Characteristics . 29 Recommendations . 29 Cleaning and disposal of the waste . 30 Annex A (informative) A-deviations . 31 Foreword This European Standard has been prepared by Technical Committee CENflC 164 “Water supply“, the secretariat of which is held by AF
17、NOR. 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 June 2001, and conflicting national standards shall be withdrawn at the latest by June 2001. According to the CENKENELEC Internal Regulations,
18、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, Norway, Portugal, Spain, Sweden, Switzerland and the United Ki
19、ngdom. Annex A is informative. 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 in any of th
20、e 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. Page 4 EN 1444 : 2000 1 Scope This draft European Standard, applie
21、s 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 systems specified in EN 805:2000, “Water supply - Requirements for
22、 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-cement pipes. This standard does not cover the following : a) b) in
23、stallation by thrust boring and pipe jacking methods which require the use of highly specialized techniques : problems caused by the use of special installations procedures (e.g. removal of pile sheeting in very deep trenches, etc.). 2 Normative references This European Standard incorporates by date
24、d 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 of any of these publications apply to this European Standard o
25、nly when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). EN 51 2: 1994, Fibre-cement products - Pressure pipes and joints. EN 805:2000, Water supply - Requirements for systems and components outside
26、 buildings. EN 1295-1, Structural design of buried pipelines under various conditions of loading - Part I: General requirements. IS0 2785, Directives for selection of asbestos-cement pipes subject to external loads with or without internal pressure. 3 Terms and definitions For the purposes of this E
27、uropean 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. Page 5 EN 1444 : 2000 Betriebsdruck Table 1 - Designation of pressures in English, French, German System English design press
28、ure maximum desigr pressure system test pressure allowable ope rat in g pressure allowable maximum operating pressure allowable site test pressure operating pressure service pressure French pression de calcul en regime permanent pression maximale de calcul pression dpreuve du rseau pression de fonct
29、ionnement admissible Abbreviation a DP MDP STP PFA PMA PEA OP SP a Valid for all language versions. pression maximale admissible pression dpreuve admissible sur chantier pression de fonctionnement pression de service German I Systembetriebsdruck hchster System Systemprfdruck related zulssiger Bautei
30、lbetriebsdruck Componen Bauteilbetriebcdruck auf der Baustelle I Versorgungsdruck 1 related 3.1.1 allowable maximum operating pressure (PMA) maximum pressure occuring from time to time, including surge, that a component is capable of withstanding in service 3.1.2 allowable operating pressure (PFA) m
31、aximum 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 integrity and tigh
32、tness 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 th
33、e 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 pressure (OP) internal pressure which occurs at a particular time and at a particular point
34、in the water supply system Page 6 EN 1444 : 2000 3.1.7 pressure zones areas of pressure ranges within a water supply systems 3.1.8 service pressure (CP) internal pressure delivered at the point of connection to the consumers installation at zero flow in the service pipe 3.1.9 surge rapid fluctuation
35、s 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 System 3.2.1 gravity system system where flow and/or pressure are caused by the force of gra
36、vity. 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 which connects principal main) with service pipes 3.2.3 potable water water intended f
37、or 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 gravity system system where the gravity system and the pumped system are used,
38、 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 distinguished (see Figure 1) : - main lift : normally at the outlet of the treatment
39、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 storage. 3.2.7 pumped system system where flow and/or pressure are provi
40、ded by means of one or more pumps and where the pipeline operates full Page 7 EN 1444 : 2000 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 I i I l Key 1 Main lift 2 Intermediate 3 Booster Figure 1 - Example of differ
41、ent types of pumping stations 3.2.1 O service reservoir covered reservoir for potable water which includes water comparment(s), control building, operation equipment and access arrangement providing reserve supplies, pressure stability and balancing demand fluctuations 3.2.1 1 standby plant plant or
42、 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 source(s), treatment works, reservoir(s) and/or supply areas, no
43、rmally without direct consumer connection(s) 3.2.1 3 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
44、, if there is no treatment) and ends at the point of connection to the consumers installation (see Figure 2) Page 8 EN 1444 : 2000 Network Principal main Local main Supply area Service reservoir (may be present) Trunk main Source or treatment works Service pipe Consumer Figure 2 - Example of a water
45、 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 therea
46、fter 3.3.3 coat in g additional material applied to the external surface of a component to protect it from corrosion, mechanical damage or chemical attack Page 9 EN 1444 : 2000 3.3.4 ferrule component used to connect a service pipe to a main, usually capable of shutting off the flow of water to the
47、service Pipe 3.3.5 fitting component, other than a pipe, which allows pipeline deviation, change of direction or bore. In addition, flanged- socked pieces, flanged-spigot pieces and collars/couplings are also defined as fittings 3.3.6 f iexible joint joint which permits significant angular deflectio
48、n, both during and after installation and which can accept a slight offset of the centre line 3.3.7 flexible pipe pipe whose load carrying capacity is limited by deformation (diametral deflection and/or strain) under load to the ultimate design criteria without breaking or overstressing (flexible be
49、haviour) 3.3.8 joint connection between the ends of two components including the means of sealing 3.3.9 lining additional material applied to the internal surface of a component to protect it from corrosion, mechanical damage or chemical attack 3.3.1 O component of uniform bore, normally straight in axis, having e.g. socket, spigot or flanged ends Pipe 3.3.1 1 pipe barrel cylindrical part of the pipe with a uniform cross section excluding socket and spigot where appropriate 3.3.1 2 rigid joint joint that does not permit significant angular deflection, either dur
