BS-EN-13636-2004.pdf
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1、BRITISH STANDARD BS EN 13636:2004 Cathodic protection of buried metallic tanks and related piping The European Standard EN 13636:2004 has the status of a British Standard ICS 23.020.10; 77.060 ? BS EN 13636:2004 This British Standard was published under the authority of the Standards Policy and Stra
2、tegy Committee on 5 August 2004 BSI 5 August 2004 ISBN 0 580 44225 X National foreword This British Standard is the official English language version of EN 13636:2004. It partially supersedes BS 7361-1:1991, Code of practice for land and marine applications, which will be withdrawn when all the CEN
3、standards relating to cathodic protection currently being prepared are published. The UK participation in its preparation was entrusted to Technical Committee GEL/603, Cathodic protection, which has the responsibility to: A list of organizations represented on this committee can be obtained on reque
4、st to its 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 El
5、ectronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers t
6、o understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document c
7、omprises a front cover, an inside front cover, the EN title page, pages 2 to 42, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments EUROPEAN STANDARD NORME E
8、UROPENNE EUROPISCHE NORM EN 13636 July 2004 ICS 23.020.10; 77.060 English version Cathodic protection of buried metallic tanks and related piping Protection cathodique des rservoirs mtalliques enterrs et conduites associes Kathodischer Korrosionsschutz von unterirdischen metallenen Tankanlagen und z
9、ugehrigen Rohrleitungen This European Standard was approved by CEN on 3 November 2003. 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
10、 and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat 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 respons
11、ibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland
12、, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050
13、Brussels 2004 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13636:2004: E EN 13636:2004 (E) 2 Contents Page Foreword. 5 1 Scope 6 2 Normative references . 6 3 Terms and definitions. 8 4 Criteria for cathodic protection . 9 5 Prere
14、quisites for the application of cathodic protection 9 5.1 General. 9 5.2 Electrical continuity 10 5.3 Electrical separation. 10 5.4 External coating 10 6 Base data for design. 11 6.1 General. 11 6.2 Neighbouring structures 11 6.3 Soil environment. 11 6.4 Tank and piping data 11 6.4.1 General. 11 6.4
15、.2 Stored medium 12 7 Design and prerequisites. 12 7.1 Structure materials . 12 7.2 Electrical separation. 13 7.2.1 General. 13 7.2.2 Isolating devices. 13 7.2.3 Temporary connections . 13 7.2.4 Permanently connected electrical equipment . 13 7.3 Explosion hazard prevention. 14 7.3.1 General. 14 7.3
16、.2 Electrical equipment installation. 14 7.3.3 Isolating joints. 14 7.4 Other equipment . 15 7.4.1 Test station 15 7.4.2 Coupons. 16 7.4.3 Mechanical connections including flanges 16 7.4.4 Sleeve pipe 16 7.4.5 Wall entries 16 7.4.6 Drainage station 16 7.4.7 Local earthing systems 16 7.5 Galvanic ano
17、de systems 16 7.5.1 General. 16 7.5.2 Materials. 17 7.5.3 Location . 17 7.5.4 Connection of anodes to the structure. 17 7.6 Impressed current systems . 17 7.6.1 General. 17 7.6.2 Components 17 7.7 Cables. 18 7.8 Interference 19 8 Installation of cathodic protection systems. 19 8.1 General. 19 EN 136
18、36:2004 (E) 3 8.2 Installation of cables. 20 8.2.1 General. 20 8.2.2 Cable connections to structures. 20 8.3 Installation of structures to be protected. 21 8.3.1 Buried structures 21 8.3.2 Above-ground structures. 21 8.3.3 Isolating joints. 21 8.4 Anodes. 22 8.4.1 General. 22 8.4.2 Galvanic anodes 2
19、2 8.4.3 Impressed current anodes. 22 8.5 Impressed current station 23 8.5.1 Location . 23 8.5.2 Electrical installation 23 8.6 Test stations, measuring points and coupons 23 8.7 Bondings and drainage stations . 23 8.8 Labelling 23 8.9 Installation checks 24 8.10 As-built documentation 24 9 Commissio
20、ning . 24 9.1 Preliminary checking 24 9.2 Start-up. 25 9.3 Verification of the cathodic protection effectiveness. 25 9.4 Determination of relevant measuring points . 25 9.5 Commissioning documents. 26 10 Inspection and maintenance 26 10.1 General. 26 10.2 Inspection 26 10.2.1 General. 26 10.2.2 Func
21、tional checks of equipment. 27 10.2.3 Structure measurements 27 10.2.4 Inspection intervals 27 10.2.5 Inspection report. 29 10.3 Maintenance 29 10.3.1 Cathodic protection equipment. 29 10.3.2 Instrumentation. 29 Annex A (informative) Electrical separation between the structure to be cathodically pro
22、tected and the general earthing system . 30 A.1 Isolation of electrical equipment. 30 A.2 Electrical equipment of protection class II or III (double isolation). 31 A.3 Fault current breaker with local earthing system 32 A.4 Isolating transformer 33 A.5 Example with d.c. decoupling unit 34 Annex B (i
23、nformative) Groundbed data 35 B.1 General considerations 35 B.2 Type of groundbed 35 B.2.1 General. 35 B.2.2 Remote located groundbed . 35 B.2.3 Close located groundbed. 35 B.3 Anode type. 36 B.3.1 High-silicon cast iron anodes 36 B.3.2 Mixed-metal oxide anodes . 37 Annex C (informative) Extract of
24、pr EN 50162 . 38 Annex D (informative) Determination of inspection interval 39 D.1 General. 39 D.2 Complexity of the cathodic protection system 39 EN 13636:2004 (E) 4 D.3 Coating imperfections 39 D.4 Environmental conditions 40 D.5 Susceptibility to damage by lightning or mechanical impact 41 D.6 Ri
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