1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationPlastics piping systems Guidance for the installationinside buildings of pressure piping systems for hot and cold water intended for human consumptionPD CEN/TR 12108:2012National
2、 forewordThis Published Document is the UK implementation of CEN/TR 12108:2012. It supersedes DD ENV 12108:2001, which is withdrawn.The UK participation in its preparation was entrusted by Technical Committee PRI/88, Plastics piping systems, to Subcommittee PRI/88/2, Plastics piping for pressure app
3、lications.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2012Published by B
4、SI Standards Limited 2012 ISBN 978 0 580 74208 8 ICS 23.040.01; 91.140.60Compliance with a British Standard cannot confer immunity from legal obligations.This Published Document was published under the authority of the Standards Policy and Strategy Committee on 31 March 2012.Amendments issued since
5、publicationAmd. No. Date Text affectedPUBLISHED DOCUMENTPD CEN/TR 12108:2012TECHNICAL REPORT RAPPORT TECHNIQUE TECHNISCHER BERICHT CEN/TR 12108 February 2012 ICS 91.140.60; 23.040.01 Supersedes ENV 12108:2001English Version Plastics piping systems - Guidance for the installation inside buildings of
6、pressure piping systems for hot and cold water intended for human consumption Systmes de canalisations plastiques - Guide pour linstallation lintrieur de structures de btiments de systmes de canalisations sous pression pour leau chaude et leau froide destines la consommation humaine Kunststoff-Rohrl
7、eitungssyteme - Empfehlungen zum Einbau von Druckrohrleitungssystemen fr die Versorgung mit Warm- und Kaltwasser fr den menschlichen Gebrauch innerhalb von Gebuden This Technical Report was approved by CEN on 25 July 2011. It has been drawn up by the Technical Committee CEN/TC 155. CEN members are t
8、he national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden,
9、Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membe
10、rs. Ref. No. CEN/TR 12108:2012: EPD CEN/TR 12108:2012CEN/TR 12108:2012 (E) 2 Contents Page Foreword 4Introduction .51 Scope 62 Normative references 63 Terms and definitions .64 Storage, transport and handling 64.1 General 64.2 Storage 64.3 Handling 64.4 Transport 75 Design considerations 75.1 Servic
11、e conditions .75.2 Materials and components .76 Installation 76.1 Pipe supports - General 76.2 Installation of pipes allowing thermal length variation76.2.1 General 76.2.2 Positioning of anchor points 86.2.3 Installation of pipes allowing thermal length variation by means of a flexible arm .86.2.4 I
12、nstallation of pipes allowing expansion by means of an expansion loop . 106.2.5 Installation of pipes allowing thermal length variation and with continuous support and supporting guide brackets . 116.2.6 Installation of pipes allowing thermal length variation and with supporting guide bracket 136.2.
13、7 Installation of pipes on continuous horizontal supports . 146.3 Installation of pipes not allowing thermal length variation (for PE-X, PB, PP and PE-RT) . 146.3.1 General . 146.3.2 Positioning of anchor points (for PE-X, PB, PP and PE-RT) 146.3.3 Installation of pipes between anchor points not all
14、owing thermal length variation where pipe support is continuous (for PE-X, PB PP and PE-RT) . 156.3.4 Installation of pipes between anchor points not allowing thermal length variation with supporting guide brackets (for PE-X, PB, PP and PE-RT) 166.3.5 Installation of pipes supported only at the anch
15、or points (for PE-X, PB, PP and PE-RT) 176.4 Embedded pipes . 186.4.1 Pipes laid within protective pipes or ducts and/or insulation . 186.4.2 Embedded bare pipes 196.5 Pipes and protective pipes hanging or looping free . 197 Jointing 217.1 General . 217.2 Preparation of pipe . 217.3 Jointing procedu
16、res . 217.3.1 Compression fittings and crimped fittings 217.3.2 Flanged fittings . 217.3.3 Flat-seat union fittings . 227.4 Solvent-cement or adhesive-bonded fittings . 227.5 Fused joints . 228 Boiler and instantaneous water heaters connections 229 Painting 22PD CEN/TR 12108:2012CEN/TR 12108:2012 (E
17、) 3 10 Filling and inspection 2210.1 General . 2210.2 Testing and commissioning . 2310.2.1 General . 2310.2.2 Test procedure A . 2310.2.3 Test procedure B . 23Annex A (informative) Thermal length variation as a function of the pipe length and temperature difference for pipe materials 25Bibliography
18、28PD CEN/TR 12108:2012CEN/TR 12108:2012 (E) 4 Foreword This document (CEN/TR 12108:2012) has been prepared by Technical Committee CEN/TC 155 “Plastics piping systems and ducting systems”, the secretariat of which is held by NEN. Attention is drawn to the possibility that some of the elements of this
19、 document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes ENV 12108:2001. This document includes the following: Annex A (informative), Thermal length variation as a function of the pipe leng
20、th and temperature difference for pipe materials; a bibliography. At the date of publication of this Technical Report, System Standards for piping systems of hot and cold water applications inside buildings are the following: EN ISO 15874 (all parts), Plastics piping systems for hot and cold water i
21、nstallations Polypropylene (PP); EN ISO 15875 (all parts), Plastics piping systems for hot and cold water installations Crosslinked polyethylene (PE-X); EN ISO 15876 (all parts), Plastics piping systems for hot and cold water installations Polybutylene (PB); EN ISO 15877 (all parts), Plastics piping
22、 systems for hot and cold water installations Chlorinated poly(vinyl chloride) (PVC-C); EN ISO 22391 (all parts), Plastics piping systems for hot and cold water installations Polyethylene of raised temperature resistance (PE-RT). PD CEN/TR 12108:2012CEN/TR 12108:2012 (E) 5 Introduction This European
23、 Technical Report covers the material-related aspects of installation practice. General requirements including design consideration and pipe sizing are given in EN 806 series. It is essential when dealing with techniques for the installation inside buildings of pressure piping systems to choose the
24、correct type of products for the installation and that a well-established installation technique is used. The system supplier/manufacturer should supply detailed instructions for satisfactory handling, storage and installation. PD CEN/TR 12108:2012CEN/TR 12108:2012 (E) 6 1 Scope This European Techni
25、cal Report recommends practices to be followed in the application and installation of thermoplastics pipes and associated fittings. These fall within the scope of EN 806-1 and, EN ISO 15874, EN ISO 15875, EN ISO 15876, EN ISO 15877 and EN ISO 22391 to be used for hot and/or cold water distribution i
26、ntended for human consumption inside buildings. This document can also be used for heating installations if applicable, except for under floor heating for which EN 12164 can apply. Guidance is also given on acceptable methods of jointing polybutylene (PB), crosslinked polyethylene (PE-X), polypropyl
27、ene (PP), chlorinated poly(vinyl chloride) (PVC-C) and Polyethylene of raised temperature resistance (PE-RT) pipes and associated fittings, together with recommendations for their storage, handling and transportation. 2 Normative references The following documents, in whole or in part, are normative
28、ly referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 806-1, Specifications for installations inside buildings convey
29、ing water for human consumption Part 1: General 3 Terms and definitions For the purposes of this Technical Report, the terms and definitions given in EN 806-1 apply. 4 Storage, transport and handling 4.1 General Pipe ends should be covered or protected in such a way that dirt is prevented from enter
30、ing the pipe. Pipe with end treatment, such as flanging, forming or pre-assembled fittings, should be stacked or supported so that the ends are free from loading and damage. When storing, transporting and handling, original packing should be used if possible. 4.2 Storage The storage chosen should no
31、t cause any change to pipe dimensions and the storage area should be such that it does not cause any damage to the pipe surface. All fittings and accessories should be stored in their original containers, or as recommended by the system supplier/manufacturer. Storage in direct sunlight should be avo
32、ided, as extended exposure to UV light can lead to deterioration. 4.3 Handling Loading and unloading of pipes should be carried out with care to avoid damage. Where mechanical handling is employed, the techniques used should ensure that no damage to pipes can occur. Metal slings, hooks and chains sh
33、ould not come into contact with the pipe. Pipes should not be dragged along rough ground or dropped on a hard surface. PD CEN/TR 12108:2012CEN/TR 12108:2012 (E) 7 4.4 Transport Vehicles with a flat bed should be used for transporting pipe. The bed should be free from nails or other projections. Stra
34、ight lengths should be uniformly supported along their length. Pipes should be loaded on vehicles in such a way that there is no unnecessary overhang. 5 Design considerations 5.1 Service conditions The installed pipe work system should be capable of operation at the applicable service conditions in
35、accordance with classes specified in EN ISO 15874, EN ISO 15875, EN ISO 15876 EN ISO 15877 and EN ISO 22391. 5.2 Materials and components Components for hot and cold water pipes should alternatively conform to EN ISO 15874, EN ISO 15875, EN ISO 15876, EN ISO 15877 and EN ISO 22391. 6 Installation 6.
36、1 Pipe supports - General Pipe supports should be designed to provide a permanent fixing. Where fittings such as valves and manual controls are used, these should be firmly anchored so as to minimize any moment imparted to the pipe by operation e.g. of hand wheels or levers. Spacing distances should
37、 be in accordance with the system suppliers/manufacturers installation instructions. Clamps/brackets to support pipe should be designed in such a way that the function of the piping system is not affected. Where pipes are adequately supported through joists or on boarding, intermediate clips may not
38、 be necessary. 6.2 Installation of pipes allowing thermal length variation 6.2.1 General NOTE Annex A shows the thermal length variation L as function of length of pipe and temperature difference for, PE-X, PP-R, PB, PVC-C and PE-RT. Pipes are subjected to thermal length variation, which requires co
39、nsideration to prevent any damage, particularly for rigid pipes. There are different ways to consider this. Thermal length variation of a thermoplastic pipe can be calculated according to Formula (1): L = T L (1) where L is the thermal length variation, in millimetres; T is the temperature differenc
40、e, in Kelvin; L is the length of pipe, in metres; PD CEN/TR 12108:2012CEN/TR 12108:2012 (E) 8 is the coefficient of thermal expansion (thermal length variation), in millimetres per metre, per Kelvin. Reference values for are given in Table 1. Table 1 Reference values of thermal length variation Mate
41、rial Figure mm/m K PVC-C PE-X PP-R PB PE-RT 0,07 0,15 0,15 0,13 0,19 A.1 A.2 A.2 A.3 A4 6.2.2 Positioning of anchor points The positioning of anchor points can be used to give direction and to limit to the amount of thermal length variation. The anchor points can be positioned in such a way that var
42、iations of lengths can be split in different directions. Examples are given in Figures 1 to 3. This is also valid for header pipes in a basement. Figure 1 Positioning of anchor points to guide the direction of thermal length variation (installation with branches) 6.2.3 Installation of pipes allowing
43、 thermal length variation by means of a flexible arm The flexible arm should be sufficiently long to prevent damage. PD CEN/TR 12108:2012CEN/TR 12108:2012 (E) 9 The guide brackets should allow clearance to the wall also after thermal length variation. This is also applicable in cases where pipes are
44、 supported along their length. A typical installation is shown in Figures 2 and 3. Figure 2 Compensation of thermal length variation, L, by flexible arm, LBFigure 3 Compensation of thermal length variation, L, by flexible arm, LB The minimum length of the flexible arm, LBcan be calculated according
45、to Formula (2): LdC = L eB (2) PD CEN/TR 12108:2012CEN/TR 12108:2012 (E) 10 where L is the thermal length variation, in millimetres (see 6.2.1); LBis the flexible arm, in millimetres; C is the material constant (see Table 2); deis the outside diameter, in millimetres. Table 2 Value of C Material Mat
46、erial constant C PVC-C PE-X PP-R PB PE-RT 34 12 20 10 14 6.2.4 Installation of pipes allowing expansion by means of an expansion loop A typical installation is shown in Figure 4. PD CEN/TR 12108:2012CEN/TR 12108:2012 (E) 11 Figure 4 Compensation of the thermal length variation by expansion loop It i
47、s preferable to design the loop so that l2= 0,5l1. In this case the flexible arm is calculated according to Formula (3). 21eB222llLdCL += (3) 6.2.5 Installation of pipes allowing thermal length variation and with continuous support and supporting guide brackets A typical installation is shown in Fig
48、ure 5. Maximum recommended distances between anchor point and supporting guide bracket respectively between supporting guide brackets, L1, and between bindings, L2, are given in Tables 3 and 4. PD CEN/TR 12108:2012CEN/TR 12108:2012 (E) 12 Figure 5 Continuous support with supporting guide bracket all
49、owing thermal length variation Table 3 Maximum recommended distance, L1, between supporting bracket (approximate values) Dimensions in millimetres Pipe outside diameter L1Cold water Hot water de 20 20 de 40 40 de 75 75 de 110 110 de 125 125 de 140 140 de 160 1500 1500 1500 2000 2000 2500 2500 1000 1200 1500 2000 2000 2500 2500 PD CEN/TR 12108:2012CEN/TR 12108:2012 (E
