1、Metallic industrial pipingPart 6: Additional requirements for buried pipingBS EN 134806:2017BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13480-6 June 2017 ICS 23.040.01 Supersedes EN 13480-6:2012English Version
2、Metallic industrial piping - Part 6: Additional requirements for buried piping Tuyauteries industrielles mtalliques - Partie 6 : Exigences complmentaires pour les tuyauteries enterres Metallische industrielle Rohrleitungen - Teil 6: Zustzliche Anforderungen an erdgedeckte Rohrleitungen This European
3、 Standard was approved by CEN on 21 June 2017. CEN members are bound to comply with the CEN/CENELEC 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 concerni
4、ng such national standards may be obtained on application to the CEN-CENELEC 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 i
5、ts own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germ
6、any, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KO
7、MITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13480-6:2017 ENational forewordThis British Standard is the UK implementation of EN 134806:2017.
8、 It supersedes BS EN 134806:2012+A1:2016 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee PVE/10, Piping systems.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to inclu
9、de all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2017 Published by BSI Standards Limited 2017ISBN 978 0 580 98616 1ICS 23.040.01Compliance with a British Standard cannot confer immunity from legal obligations.This Bri
10、tish Standard was published under the authority of the Standards Policy and Strategy Committee on 30 September 2017.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 134806:2017EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13480-6 June 2017 ICS 23.040.01 Su
11、persedes EN 13480-6:2012English Version Metallic industrial piping - Part 6: Additional requirements for buried piping Tuyauteries industrielles mtalliques - Partie 6 : Exigences complmentaires pour les tuyauteries enterres Metallische industrielle Rohrleitungen - Teil 6: Zustzliche Anforderungen an
12、 erdgedeckte Rohrleitungen This European Standard was approved by CEN on 21 June 2017. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists
13、 and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC 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 t
14、he responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugo
15、slav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT
16、 EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13480-6:2017 EBS EN 134806:2017EN 134806:2017 (E) Issue
17、1 (201706) 2 Contents Page European foreword . 3 1 Scope 5 2 Normative references 5 3 General 5 3.1 Safety . 5 3.2 Routes 6 3.3 Depth of installation. 6 3.4 Pipes marking and recording . 6 3.5 Internal inspection provisions . 6 3.6 Contents removal 7 3.7 Trench drainage 7 4 Materials . 7 5 Design an
18、d calculation 7 5.1 Minimum wall thickness for buried piping . 7 5.2 Design 8 6 Installation 9 6.1 Trenches . 9 6.2 Pipe laying . 9 6.3 Back filling 10 7 Sleeves or casings . 10 8 Corrosion protection 10 8.1 General . 10 8.2 Coatings . 11 8.3 Cathodic protection . 11 9 Examination and testing 11 Ann
19、ex A (normative) Calculations for buried piping . 12 A.1 General . 12 A.2 Materials 12 A.3 Design and calculation . 12 Annex Y (informative) History of EN 134806 35 Y.1 Differences between EN 134806:2012 and EN 134806:2017 . 35 Annex ZA (informative) Relationship between this European Standard and t
20、he Essential Requirements of EU Directive 2014/68/EU aimed to be covered 36 Bibliography . 37 BS EN 134806:2017EN 134806:2017 (E) Issue 1 (201706) 3 European foreword This document (EN 134806:2017) has been prepared by Technical Committee CEN/TC 267 “Industrial piping and pipelines”, the secretariat
21、 of which is held by AFNOR. 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 December 2017, and conflicting national standards shall be withdrawn at the latest by December 2017. Attention is drawn
22、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. This document has been prepared under a mandate given to CEN by the European Commission and the European
23、Free Trade Association, and supports essential requirements of EU Directive(s). For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document. This European Standard EN 13480 for metallic industrial piping consists of eight interdependent and not dissoci
24、able Parts which are: Part 1: General; Part 2: Materials; Part 3: Design and calculation; Part 4: Fabrication and installation; Part 5: Inspection and testing; Part 6: Additional requirements for buried piping; CEN/TR 134807, Guidance on the use of conformity assessment procedures; Part 8: Additiona
25、l requirements for aluminium and aluminium alloy piping. Although these Parts may be obtained separately, it should be recognised that the Parts are interdependant. As such the manufacture of metallic industrial piping requires the application of all the relevant Parts in order for the requirements
26、of the Standard to be satisfactorily fulfilled. This European Standard will be maintained by a Maintenance MHD working group whose scope of working is limited to corrections and interpretations related to EN 13480. BS EN 134806:2017EN 134806:2017 (E) Issue 1 (201706) 4 The contact to submit queries
27、can be found at http:/www.unm.fr (en13480unm.fr). A form for submitting questions can be downloaded from the link to the MHD website. After subject experts have agreed an answer, the answer will be communicated to the questioner. Corrected pages will be given specific issue number and issued by CEN
28、according to CEN Rules. Interpretation sheets will be posted on the website of the MHD. This document supersedes EN 134806:2012. This new edition incorporates the Amendments which have been approved previously by CEN members, and the corrected pages up to Issue 4 without any further technical change
29、. Annex Y provides details of significant technical changes between this European Standard and the previous edition. Amendments to this new edition may be issued from time to time and then used immediately as alternatives to rules contained herein. According to the CENCENELEC Internal Regulations, t
30、he national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latv
31、ia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 134806:2017EN 134806:2017 (E) Issue 1 (201706) 5 1 Scope This document specifies requirements for industrial piping either to
32、tally buried or partly buried and partly run in sleeves or similar protection. It is used in conjunction with the other six parts of EN 13480. Where buried piping subject to this standard connects to piping installed under other jurisdiction such as pipelines, the transition should be made at a clos
33、ing element e.g. an isolating or regulating valve separating the two sections. This should be close to the boundary of the industrial site, but may be inside or outside the boundary. Operating temperature up to 75 C. NOTE For higher temperatures reference should be made to EN 13941+A1:2010, but it s
34、hould be kept in mind, that CEN/TC 107 only deals with preinsulated piping with temperatures up to 140 C and diameters up to 800 mm, which is state of the art for these products. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are
35、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 134801:2017, Metallic industrial piping Part 1: General EN 134802:2017, Metallic industrial piping Par
36、t 2: Materials EN 134803:2017, Metallic industrial piping Part 3: Design and calculation EN 134805:2017, Metallic industrial piping Part 5: Inspection and testing 3 General 3.1 Safety a) Buried piping within an industrial site presents a potential hazard to site personal, equipment and environment.
37、The sections set out in this document provide guidance as to how the hazard presented by the piping may be assessed, and the integrity of the piping system maintained. NOTE 1 Attention is drawn to appropriate National or Local regulations. b) The main factors to be considered are: Design including R
38、outing, Layout, Interaction with connecting systems; Materials and Construction Specification and Quality Control; Operating Procedures and Control; BS EN 134806:2017EN 134806:2017 (E) Issue 1 (201706) 6 Corrosion protection; External Impact Protection and Mitigation. All of these factors interact.
39、NOTE 2 It is recommended that all buried piping be subjected to a formal hazard analysis procedure. NOTE 3 Attention is drawn to appropriate National or Local regulations. c) Additional safety requirements may be specified for group 1 fluids according to EN 134801:2017, including automated means of
40、isolating buried sections of piping. 3.2 Routes All routes for buried piping shall be agreed with the owner and operator of the site. The site owner shall be required to furnish details of all other actual or planned buried services (including cables) and all roadways or other surface loads within t
41、he construction working width or zone of the proposed pipe. Piping in category III according to EN 134801:2017 shall be separated from any other pipe or service by a minimum distance of 0,25 m unless it can be demonstrated that a smaller distance is acceptable. 3.3 Depth of installation In the absen
42、ce of special protection (e.g. concrete slabs) buried piping shall be provided with a minimum cover of 0,8 m. The designer shall consider increasing the extent of cover above the minimum where penetrating cold or frost heave of the ground is likely, or where damage from excavation activities is a po
43、ssibility. 3.4 Pipes marking and recording Buried pipes shall be marked by a continuous tape or other agreed means placed directly above the pipe and no closer than 0,3 m. All buried pipes shall be identified on asinstalled drawings which accurately locate the route relative to structures or other p
44、ermanent features. The site owner may require the route to be physically marked by the use of identification posts or cover slabs at appropriate intervals. 3.5 Internal inspection provisions Where periodic internal inspection of buried piping is anticipated, and the specification identifies the meth
45、od proposed, the designer shall incorporate appropriate means of introducing and removing the inspection devices. Such closures, and openings for inspection shall be designed in accordance with EN 134803:2017. BS EN 134806:2017EN 134806:2017 (E) Issue 1 (201706) 7 3.6 Contents removal The design of
46、the piping system shall make allowance for the safe filling and removal of the contents. This shall include vent and drain points or falls as required, and the selection of appropriate bends and fittings. 3.7 Trench drainage The designer shall recognize that pipe trenches for buried piping can act a
47、s channels for ground water. Appropriate means shall be employed to ensure that the bottom of the trench has sufficient slope to soakaways or sumps to prevent accumulation of water around the piping. Where such measures are not possible, the designer shall include the possibility of flotation in the
48、 design calculations. In addition, the drainage arrangements shall dispose of the hydrostatic test water. Care shall be exercised during this operation to ensure that washout of bedding material does not occur. 4 Materials Materials shall conform to the requirements of EN 134802:2017 except that the
49、 value for the specified minimum elongation after fracture for the longitudinal direction (see EN 134802:2017, 4.1.4.) shall be 20 %. Materials with elongation values less than 20 % shall be avoided, and shall only be used subject to agreement between the purchaser and the designer. 5 Design and calculation 5.1 Minimum wall thickness for buried piping Unless the pressure design calculations lead to a greater thickness, the wall thickness of the pipe shall not be lower than the value g
