CEN TR 16017-2010 Guide to the use of EN 598《EN 598的使用指南》.pdf

1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationPD CEN/TR 16017:2010Guide to the use of EN 598PD CEN/TR 16017:2010 PUBLISHED DOCUMENTNational forewordThis Published Document is the UK implementation of CEN/TR16017:2010.The UK

2、participation in its preparation was entrusted to TechnicalCommittee PSE/10, Iron pipes and fittings.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are resp

3、onsible for its correctapplication. BSI 2010ISBN 978 0 580 69117 1ICS 23.040.10; 23.040.40; 93.030Compliance with a British Standard cannot confer immunity fromlegal obligations.This Published Document was published under the authority of theStandards Policy and Strategy Committee on 30 September 20

4、10.Amendments issued since publicationDate Text affectedPD CEN/TR 16017:2010TECHNICAL REPORT RAPPORT TECHNIQUE TECHNISCHER BERICHT CEN/TR 16017 September 2010 ICS 23.040.40; 23.040.10 English Version Guide to the use of EN 598 Guide pour lutilisation de lEN 598 Hinweise zur Anwendung von EN 598 This

5、 Technical Report was approved by CEN on 20 March 2010. It has been drawn up by the Technical Committee CEN/TC 203. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Irel

6、and, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 1

7、7, B-1000 Brussels 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. CEN/TR 16017:2010: EPD CEN/TR 16017:2010CEN/TR 16017:2010 (E) 2 Contents Page Foreword 3Scope .45.6 Flanged joints .55.7 Pipes with screwed or welded flanges 56.7

8、 Zinc mass .57 Performance test methods .67.1 Compressive strength of the cement mortar lining .67.2 Longitudinal bending of pipes .67.3 Diametral stiffness of pipes 67.4 Leak tightness of components for gravity pipelines .77.5 Leak tightness of flexible joints to positive internal pressure 77.6 Lea

9、k tightness of flexible joints to negative internal pressure .87.7 Leak tightness of flexible push-in joints to positive external pressure .87.8 Leak tightness of flexible joints to dynamic internal pressure .87.9 Chemical resistance to effluents 87.10 Abrasion resistance 89 Evaluation of conformity

10、 .89.1 General 8Annex E Root penetration .9Annex ZA and CE marking 10Bibliography . 11PD CEN/TR 16017:2010CEN/TR 16017:2010 (E) 3 Foreword This document (CEN/TR 16017:2010) has been prepared by Technical Committee CEN/TC 203 “Cast iron pipes, fittings and their joints”, the secretariat of which is h

11、eld by AFNOR. Attention is drawn to the possibility that some of the elements of this 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. EN 598 deals with components of piping systems for sewerage pipes, fitti

12、ngs, accessories and joints which together, form the part of a sewerage network. Each of these components can be manufactured by a different supplier, which is often the reality; the performances and the tests required by EN 598, although perfectly comprehensive, are not always formulated with enoug

13、h accuracy to be easily used in every real situation occurring in the market. In regard to quality assurance, the attestations and certifications of conformity to the standards available on the markets: attestation of compliance to the performance tests; certification of conformity of the products o

14、f a batch; certification of conformity to EN ISO 9001 of the supplier; national quality or conformity marks; third party certification of conformity of products to a standard; self-declaration of conformity to a standard by the supplier for products that he sells, have different meanings for the cus

15、tomer, who generally needs all products to be fully in compliance with this standard. In addition EN 598 is now a harmonized standard prepared under the Mandate M/131 “Pipes, tanks and ancillaries not in contact with water intended for human consumption” and as such products should be CE marked. PD

16、CEN/TR 16017:2010CEN/TR 16017:2010 (E) 4 Scope EN 598 specifies the requirements and associated test methods applicable to ductile iron pipes, fittings, accessories and their joints for the construction of drains and sewers outside buildings: operating without pressure (gravity sewerage), or with po

17、sitive or negative pressure; to be installed below or above ground; to convey surface water, domestic waste water and certain types of industrial effluents, either in separate systems or in combined systems. This technical report: explains in more detail the process of testing for the performance te

18、sts; explains in more detail the benefits of high alumina cement lining; explains in more detail the definitions of the different types/levels of attestation to enable customers to ensure their requirements are fulfilled; explains in more detail the ways of certification of conformity with EN 598 fo

19、r a reliable evaluation of the performance of products; explains in more detail CE marking and its relevance i.e. the CE mark is not a mark of conformity with a standard but only a self-declaration concerning the CPD essential requirements. In order to make the use of this Technical Report easier, t

20、he clauses of this document refer to the corresponding clause numbers in EN 598. 4.1.3.1 Gasket materials Gaskets for sewerage application are manufactured from rubber in compliance with EN 681-1 type WC or WG. This ensures that the gasket is unaffected by any hydro-carbons discharged from the sewer

21、age environment. In addition, the designated rubber offers the required resistance to benzene derivatives, such as those contained in oily waste. 4.4.3 Internal lining of high alumina cement mortar Ductile iron pipes for sewerage applications are internally lined with high alumina cement mortar as s

22、tandard thus protecting the internal surface of the ductile iron pipes against corrosion and tuberculation. High alumina cement lining provides a high resistance to both chemical and septic (biogenic corrosion of cement mortar lining) attack found in the vast majority of sewers. Similarly, it offers

23、 excellent resistance to abrasion brought about by the impact of solid particles contained in the effluent. The performance of both of these is ensured by the tests detailed in EN 598 sub-clauses 5.8 Chemical resistance and 5.9 Abrasion resistance. Linings with a high compressive strength (min 50 MP

24、a - see 5.10), also exhibit high density, good adhesion and low porosity: all of which parameters are conducive to a long working life. PD CEN/TR 16017:2010CEN/TR 16017:2010 (E) 5 4.4.4 Coating of joint areas A possible area of weakness in the corrosion protection in sewer systems could be where the

25、 conveyed sewage comes into contact with the “external coating” of the pipe i.e. internal surface of the socket and the external surface of the spigot in the joint area. This is not the case with EN 598 pipes where the joint areas of ductile iron pipes (internal surface of the socket and external su

26、rface of the spigot) for sewerage applications are coated with a synthetic resin (epoxy, polyurethane etc.). These coatings conform without failure to the stringent test for chemical resistance to effluents of EN 598 sub-clause 5.8. This ensures that the surface in contact with the effluent does not

27、 crack, blister or disbond for the life of the sewer, preventing the onset of biogenic corrosion. 5.6 Flanged joints The test for flanged joints shall be carried out in accordance with EN 545 on an assembly comprising two pipes or fittings with identical flanges together with a relevant gasket and b

28、olts recommended by the manufacturer. It is important that rubber gaskets shall be shown to have the short and long term properties as defined in EN 681-1, in particular the hardness (IRHD) is within specification. Similarly, it is important that the manufacturers jointing instructions are followed

29、for each particular gasket/material as regards torque values and lubrication for the bolts. The sealing of flange joints depends on many factors and the manufacturer should have written specifications for: flange joint faces surface finish, flatness, permissible irregularities; flange jointing mater

30、ials bolt lengths/grades, recommended gasket materials; jointing instructions bolt torques, lubrication, bolt tightening sequence. 5.7 Pipes with screwed or welded flanges The test for pipes with screwed or welded flanges shall be carried out in accordance with EN 545 on an assembly comprising two p

31、ipes with identical flanges together with a relevant gasket and bolts. This test is primarily a strength test for the weld/screwed connection and as such is very demanding. Because this is a specialist test on pipes that can only be welded/screwed by the manufacturer, the test can usually only be ca

32、rried out and third party accredited in the factory. 6.7 Zinc mass EN 598 requires that a rectangular token of known weight per unit area shall be attached longitudinally along the axis of the pipe before passing through the coating equipment. After zinc coating and trimming, the size of the token s

33、hall be 500 mm 50 mm. It shall be weighed on a scale having an error limit of 0,01 g. The mean mass is determined in accordance with the remainder of EN 598 sub-clause 6.7. As this test can only be carried out in the factory, conformity certification using this test method can only be acquired and g

34、ranted in the factory during the manufacturing process and not on a batch of finished products. PD CEN/TR 16017:2010CEN/TR 16017:2010 (E) 6 7 Performance test methods 7.1 Compressive strength of the cement mortar lining This test should be carried out using the actual constituents used in the manufa

35、cture of the cement mortar for the pipes. As such the sand, cement and water should be sampled from the dispensing/holding facilities in the factory. Similarly, the sand/cement/water ratios should be identical to those used in the manufacturing process (in the case of the sprayed mortar process, the

36、se ratios are identical to the ratio in the mortar mixer, whereas for the centrifugal process, these ratios are those found in the compacted lining after centrifugal spinning). Third party accreditation can thus only be granted once these strict conditions have been established and it is for this re

37、ason that it is recommended that these tests are only carried out in the factory. 7.2 Longitudinal bending of pipes This test is only applicable to pipes with an aspect ratio (length/diameter) equal to or greater than 25; for EN 598 this applies to DN 80 to DN 200 pipe. Longitudinal bending strength

38、 is important for both above and below ground installations: above ground pipes are used for river crossings and installed on piers in terrain where trenching is impossible or expensive; below ground pipes can be subjected to beam loading when poorly installed with lack of support from the bed or fr

39、om disturbance from second comer installation and in unstable ground subject to subsidence or earthquakes. Also, the inherent longitudinal bending strength of the pipes ensures that there is no sagging of the pipes maintaining the pipeline gradient for flow of sewerage in gravity mains. Similarly, t

40、he longitudinal rigidity eliminates troughs where sewerage could stagnate in low flow gravity mains. Ductile iron pipes can absorb considerable deflection of the pipe barrel (e.g. possible ground movement) without damage because of the materials high inherent beam strength. The stringent test detail

41、ed in EN 598 sub-clause 7.2 is in two parts: bending moments equivalent to those encountered in service are applied; the pipe is checked to verify that there is no residual deflection or damage to the external coating and internal lining; the same pipe is then subjected to bending moments equivalent

42、 to 1.7 times greater than its intended service loads without failure of the pipe wall. High bending moment strength also minimizes any problems when transporting, lifting, handling and installing pipes. 7.3 Diametral stiffness of pipes The diametral stiffness of a pipe is its ability to resist oval

43、ization under top loading. The loading on a buried pipe is the earth loading above the crown plus any surcharge loads from traffic, buildings, railways etc. In general the higher the pipe stiffness the greater the pipes ability to resist the applied loads. Excessive ovalization can cause coating/lin

44、ing damage and loss of tightness at joints. Ductile iron pipes are inherently stiff and their allowable pipe ovalization (EN 598 Table 10) is limited to ensure no such coating/lining damage or joint leakage will occur. The test detailed in EN 598 sub-clause 7.3 is in two parts: 1) the test load corr

45、esponding to the minimum diametral stiffness is applied to a pipe section and the pipe is checked to verify that there is no damage to the external coating and the internal lining; PD CEN/TR 16017:2010CEN/TR 16017:2010 (E) 7 2) the test load is then increased until the vertical deflection reaches tw

46、ice the value measured in test (1) without failure of the pipe wall. The relative high diametral stiffness of ductile iron pipes means that pipes can be laid with depths of cover both shallow (high traffic loads) and deep (high earth loads) see EN 598 Annex D. In many cases the native soil can be us

47、ed as the embedment material. From an environmental viewpoint, this means that no imported material is needed with an obvious reduction in the use of lorries with the accompanying elimination of CO2emissions and fuel usage. As ductile iron pipes are not subject to creep, the diametral stiffness valu

48、e remains constant during the life of the pipeline. 7.4 Leak tightness of components for gravity pipelines See EN 598. 7.5 Leak tightness of flexible joints to positive internal pressure The test shall be carried out in accordance with clause 7.5 of EN 598 on an assembled joint comprising two pipe s

49、ections, each at least 1 m long. It shall be carried out separately for other components such as fittings if their socket differs from that of the spun pipes. For such a test a flanged socket piece shall be bolted to a flanged pipe of sufficient length to satisfy the requirements of EN 598 sub-clause 7.5. Tests shall be carried out on both unrestrained and restrained joints as necessary. Short and long term characteristics of the rubber for the gaskets shall be s