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1、DRAFT FOR DEVELOPMENT DD CEN/TS 1852-3:2003 Incorporating Amendment No. 1 Plastics piping systems for non-pressure underground drainage and sewerage Polypropylene (PP) Part 3: Guidance for installation ICS 23.040.01; 93.030 ? Licensed Copy: London South Bank University, London South Bank University,
2、 Tue Dec 12 03:06:17 GMT+00:00 2006, Uncontrolled Copy, (c) BSI DD CEN/TS 1852-3:2003 This Draft for Development was published under the authority of the Standards Policy and Strategy Committee on 24 June 2003 BSI 2006 ISBN 0 580 42132 5 National foreword This Draft for Development is the official E
3、nglish language version of CEN/TS 1852-3:2003, including amendment A1:2005. The start and finish of text introduced or altered by CEN amendment is indicated in the text by tags !“. Tags indicating changes to CEN text carry the number of the CEN amendment. For example, text altered by CEN amendment A
4、1 is indicated by !“. This publication is not to be regarded as a British Standard. It is being issued in the Draft for Development series of publications and is of a provisional nature because it is a Technical Specification, adopted from a CEN/TS. It should be applied on this provisional basis, so
5、 that information and experience of its practical application may be obtained. Comments arising from the use of this Draft for Development are requested so that UK experience can be reported to the European organization responsible for its conversion to a European standard. A review of this publicat
6、ion will be initiated 2 years after its publication by the European organization so that a decision can be taken on its status at the end of its 3-year life. Notification of the start of the review period will be made in an announcement in the appropriate issue of Update Standards. According to the
7、replies received by the end of the review period, the responsible BSI Committee will decide whether to support the conversion into a European standard, to extend the life of the Technical Specification or to withdraw it. Comments should be sent in writing to the Secretary of BSI Subcommittee PRI/88/
8、1,Non-pressure applications, at British Standards House, 389 Chiswick High Road, London W4 4AL, giving the document reference and clause number and proposing, where possible, an appropriate revision of the text. A list of organizations represented on this subcommittee can be obtained on request to i
9、ts secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electroni
10、c Catalogue or of British Standards Online. Summary of pages This document comprises a front cover, an inside front cover, the CEN/TS title page, pages 2 to 11 and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since pub
11、lication Amd. No. DateComments 1568930 June 2006See national foreword Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 03:06:17 GMT+00:00 2006, Uncontrolled Copy, (c) BSI TECHNICAL SPECIFICATION SPCIFICATION TECHNIQUE TECHNISCHE SPEZIFIKATION CEN/TS 1852-3 April
12、2003 ICS 23.040.01; 93.030 English version Plastics piping systems for non-pressure underground drainage and sewerage - Polypropylene (PP) - Part 3: Guidance for installation This Technical Specification (CEN/TS) was approved by CEN on 23 November 2002 for provisional application. Amendment A1 was a
13、pproved by CEN on 4 May 2005. The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to submit their comments, particularly on the question whether the CEN/TS can be converted into a European Standard. CEN members are required
14、to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS available. It is permissible to keep conflicting national standards in force (in parallel to the CEN/TS) until the final decision about the possible conversion of the CEN/TS into an EN is reached. EUROPEAN C
15、OMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2002 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. CEN/TS 1852-3:2003 + A1:2005 E June
16、2005 + A1 (includes amendment A1:2005) CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovaki
17、a, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 03:06:17 GMT+00:00 2006, Uncontrolled Copy, (c) BSI CEN/TS 1852-3:2003 (E) 2 Contents Foreword3 1 Scope4 2 Normative references4 3 Choice of stiffness (SN
18、) series.4 3.1 General.4 3.2 Pipes.4 3.3 Fittings5 3.4 Application area code D.5 4 Storage in sunlight5 5 Handling and installation at low temperature.5 6 Push-fit joints (elastomeric sealings)6 7 Butt fusion joints.6 7.1 General.6 7.2 Jointing recommendations .6 8 Maximum deviation from straightnes
19、s8 9 Connection to rigid structures.9 10 Repairs9 11 Connection to existing pipes .9 12 Testing on site.10 Bibliography 11 Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 03:06:17 GMT+00:00 2006, Uncontrolled Copy, (c) BSI CEN/TS 1852-3:2003 (E) 3 Foreword This
20、document (CEN/TS 1852-3:2003) has been prepared by Technical Committee CEN/TC 155, “Plastics piping systems and ducting systems“, the secretariat of which is held by NEN. This Technical Specification is a Part of a System Standard for plastics piping systems of a particular material for a specified
21、application. There are a number of such System Standards. System Standards are based on the results of the work undertaken in ISO/TC 138 “Plastics pipes, fittings and valves for the transport of fluids“, which is a Technical Committee of the International Organization for Standardization (ISO). They
22、 are supported by separate standards on test methods to which references are made throughout the System Standard. The System Standards are consistent with general standards on functional requirements and on recommended practice for installation. EN 1852 consists of the following Parts, under the gen
23、eral title Plastics piping systems for non-pressure underground drainage and sewerage Polypropylene Part 1: Specifications for pipes, fittings and the system Part 2: Guidance for assessment of conformity (ENV) Part 3: Guidance for installation (this Technical Specification) According to the CEN/CENE
24、LEC Internal Regulations, the national standards organizations of the following countries are bound to announce this CEN Technical Specification: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Por
25、tugal, Slovakia, Spain, Sweden, Switzerland and the United Kingdom. Foreword to amendment A1 This document (CEN/TS 1852-3:2003/A1:2005) has been prepared by Technical Committee CEN/TC 155 “Plastics piping systems and ducting systems”, the secretariat of which is held by NEN. According to the CEN/CEN
26、ELEC Internal Regulations, the national standards organizations of the following countries are bound to announce this CEN Technical Specification: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxemb
27、ourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 03:06:17 GMT+00:00 2006, Uncontrolled Copy, (c) BSI CEN/TS 1852-3:2003 (E) 4 1 Scope This Techn
28、ical Specification, together with ENV 1046 and EN 1610, provides a material-specific set of guidelines for the installation of piping systems made of polypropylene (PP) in the field of non-pressure underground drainage and sewerage. - outside the building structure (application area code “U“); - bot
29、h buried in ground within the building structure (application area code “D“) and outside the building. This is reflected in the marking of products by “U“ and “UD“. 2 Normative references This Technical Specification incorporates by dated or undated reference, provisions from other publications. The
30、se 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 Technical Specification only when incorporated in it by amendment or revision. For
31、 undated references the latest edition of the publication referred to applies (including amendments). ENV 1046:2001, Plastics piping and ducting systems Systems outside building structures for the conveyance of water or sewage Practices for installation above and below ground EN 1295-1, Structural d
32、esign of buried pipelines under various conditions of loading Part 1: General requirements EN 1610:1997, Construction and testing of drains and sewers EN ISO 178, Plastics Determination of flexural properties (ISO 178:2001) EN ISO 9967, Plastics pipes Determination of creep ratio (ISO 9967:1994) 3 C
33、hoice of stiffness (SN) series 3.1 General PP pipe is a flexible pipe. When loaded a flexible pipe deflects and presses into the surrounding material. This generates a reaction in the surrounding materials which controls deflection of the pipe. The amount of deflection, which occurs is limited by th
34、e care exercised in the selection and laying of the bedding and side fill materials. 3.2 Pipes 3.2.1 Standard procedure The choice of the stiffness (SN) series may be made: when the same class of pipe has previously proved to be satisfactory in the same condition; or based on local practice (place o
35、f installation, usual installation procedure and experience); or based on local regulation; or based on Tables 1 and 2 of ENV 1046:2001 or based on structural design. Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 03:06:17 GMT+00:00 2006, Uncontrolled Copy, (c)
36、 BSI CEN/TS 1852-3:2003 (E) 5 3.2.2 Structural design If a static calculation is required, information on methods is given in EN 1295-1 and the following parameters apply: Flexural modulus: E(1min) 1250 MPa determined in accordance with EN ISO 178; Creep ratio: 75 mm c) Figure 1 Typical butt fusion
37、techniques The method of butt fusion comprises three stages as follows. a) Surface preparation Check that the matching surfaces for assembly are cut square, without chamfer, and are free from defects. b) Heating of surfaces Before starting the fusion process, check the operation of the fusion machin
38、e. Raise the temperature of the heater according to the manufacturers instructions, normally between 190 C and 220 C. Align the joint surfaces of the jointing components to be fused and insert the hot heating plate between them. Press the two parts together with the heating plate at a pressure in th
39、e fusion surface between 0,10 MPa and 0,20 MPa. Maintain the heating-up pressure until a bead of melt material is formed around the whole circumference of the parts to be fused. Manufacturers instructions may include recommendation for parameters of the fusion operation as shown in Figure 2 includin
40、g time intervals and related pressures together with the preferred ranges of temperature. Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 03:06:17 GMT+00:00 2006, Uncontrolled Copy, (c) BSI CEN/TS 1852-3:2003 (E) 8 Key Pa1, Pa2(MPa) Heating pressures, high and l
41、ow Pf1(MPa) Fusion pressure ta1, ta2(s) Heating times with high and low pressures ta(s) Total heating time tf1(s) Pressure build-up time tf2(s) Cooling time tf(s) Total cooling time tu(s) Change-over time Figure 2 Parameters for fusion operation c) Fusion Remove the hot plate and press the heated su
42、rfaces together. Maintain the pressure according to the manufacturers instructions and a correctly alignment of the two components until the fusion zone has cooled. Specific parameters for fusing the parts together and for the cooling operation may be given in the manufacturers instruction; see Figu
43、re 2. NOTEDo not accelerate the cooling process by means of cold water or any other cooling equipment since this may impair the quality of the joint. 8 Maximum deviation from straightness Pipes should normally be installed straight. However, as PP pipes are flexible, the following deviation from str
44、aightness (see Figure 3) will not cause problems: dn 200 mm: R 250 dn; dn 200 mm: R 400 dn. Care may be necessary to avoid any extra stress on the socket joint itself. The greatest permitted angular deflection in the socket should be as follows: 2 for dn 315 mm; 1,5 for 315 mm 630 mm. Larger angular
45、 deflections are permitted in case of joints specifically designed for large angular deflections. In these cases the manufacturer shall declare the designed angular deflection. ! “ Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 03:06:17 GMT+00:00 2006, Uncontro
46、lled Copy, (c) BSI CEN/TS 1852-3:2003 (E) 9 NOTEApproximately h ?L2/2R and ?L/R. Figure 3 Parameters of deviation from straightness 9 Connection to rigid structures Special fittings for this purpose are available. In such cases the manufacturers instructions should be followed. 10 Repairs Slip-coupl
47、ers or purpose-designed special fittings are available from manufacturers for effecting repairs. Because designs vary, it is necessary to follow individual manufacturers instructions. However, in the absence of such instructions, it is recommended that the following instructions are used: a) the ful
48、l extent of the damaged or failed section shall be identified and removed; b) the cut pipe ends shall be square and shall be prepared for push-fit jointing as described in 6c); c) repair, or slip-, couplings shall be placed in position. The replacement pipe length shall then be laid on the suitably
49、prepared bed and the slip-couplings moved to their final positions (see Figure 4); d) the embedment shall then be replaced to give compaction values approximately equal to those immediately adjacent to the repair. Figure 4 Repairs using slip-couplers 11 Connection to existing pipes For PP pipelines an additional connection can be made in a manner similar to that for making a repair when an appropriate fitting is used. Alternatively, a saddle