EN ISO 12696-2012 4375 Cathodic protection of steel in concrete (ISO 12696 2012)《混凝土中钢的阴极保护》.pdf

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1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 12696:2012Cathodic protection of steel inconcrete (ISO 12696:2012)Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleN

2、o reproduction or networking permitted without license from IHS-,-,-BS EN ISO 12696:2012 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO 12696:2012. It supersedes BS EN 12696:2000 which is withdrawn.The UK participation in its preparation was entrusted to Te

3、chnical Committee GEL/603, Cathodic protection.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 Sta

4、ndards Institution 2012. Published by BSI Standards Limited 2012ISBN 978 0 580 63861 9 ICS 77.060; 77.140.15; 91.080.40 Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Commit

5、tee on 29 February 2012.Amendments issued since publicationDate Text affectedCopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN

6、ISO 12696 February 2012 ICS 77.140.15; 77.060 Supersedes EN 12696:2000English Version Cathodic protection of steel in concrete (ISO 12696:2012) Protection cathodique de lacier dans le bton (ISO 12696:2012) Kathodischer Korrosionsschutz von Stahl in Beton (ISO 12696:2012) This European Standard was a

7、pproved by CEN on 31 January 2012. 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 concerning such nati

8、onal 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 its own langu

9、age 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latv

10、ia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-100

11、0 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 12696:2012: ECopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without l

12、icense from IHS-,-,-BS EN ISO 12696:2012 EN ISO 12696:2012 (E) 3 Foreword This document (EN ISO 12696:2012) has been prepared by Technical Committee CEN/TC 219 “Cathodic protection“, the secretariat of which is held by BSI, in collaboration with Technical Committee ISO/TC 156 “Corrosion of metals an

13、d alloys“. 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 August 2012, and conflicting national standards shall be withdrawn at the latest by August 2012. Attention is drawn to the possibility th

14、at 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 supersedes EN 12696:2000. According to the CEN/CENELEC Internal Regulations, the national standards organization

15、s of the following countries are bound to implement this European Standard: 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,

16、Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN ISO 12696:2012ISO 12696:2012(E) ISO

17、2012 All rights reserved iiiContents PageForeword . vIntroduction . vi1 Scope 12 Normative references . 13 Terms and definitions . 24 General . 24.1 Quality management systems . 24.2 Personnel . 34.3 Design . 35 Structure assessment and repair 35.1 General . 35.2 Records 35.3 Visual inspection and d

18、elamination survey . 45.4 Chloride analysis . 45.5 Carbonation depth measurement . 45.6 Concrete cover and reinforcement location 45.7 Reinforcement electrical continuity . 45.8 Steel/concrete potential . 55.9 Concrete electrical resistivity 55.10 Repair . 55.11 Cementitious overlay . 65.12 New stru

19、ctures . 66 Cathodic protection system components 76.1 General . 76.2 Anode systems 76.3 Monitoring sensors .126.4 Monitoring instrumentation 146.5 Data management system .156.6 D.C. cables 166.7 Junction boxes .176.8 Power supplies .176.9 Transformer-rectifiers 177 Installation procedures 197.1 Ele

20、ctrical continuity 197.2 Performance monitoring system .197.3 Connections to steel in concrete 207.4 Concrete repairs associated with the cathodic protection components .207.5 Surface preparation for anode installation .207.6 Anode installation .217.7 Connections to the anode system 217.8 Anode over

21、lay, surface sealant or decorative coating application 217.9 Electrical installation 227.10 Testing during installation 228 Commissioning 238.1 Visual inspection .238.2 Pre-energizing measurements .238.3 Initial energizing of impressed current systems 238.4 Initial adjustment of impressed current sy

22、stems .248.5 Initial performance assessment 248.6 Criteria of protection: Interpretation of performance assessment data .258.7 Adjustment of protection current for impressed current systems 26Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo repr

23、oduction or networking permitted without license from IHS-,-,-BS EN ISO 12696:2012ISO 12696:2012(E)iv ISO 2012 All rights reserved9 System records and documentation 269.1 Quality and test records 269.2 Installation and commissioning report .279.3 Operation and maintenance manual 2710 Operation and m

24、aintenance .2810.1 Intervals and procedures 2810.2 System review 2910.3 System review report .29Annex A (informative) Principles of cathodic protection and its application to steel in concrete . 30Annex B (informative) Design process .36Annex C (informative) Notes on anode systems 39Bibliography .44

25、Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN ISO 12696:2012ISO 12696:2012(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of

26、 national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. Int

27、ernational organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.International Standards are drafted in accordance with th

28、e rules given in the ISO/IEC Directives, Part 2.The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by

29、 at least 75 % of the member bodies casting a vote.Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights.ISO 12696 was prepared by the European Committee fo

30、r Standardization (CEN) Technical Committee CEN/TC 219, Cathodic protection, in collaboration with Technical Committee ISO/TC 156, Corrosion of metals and alloys in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).This first edition cancels and replaces E

31、N 12696:2000, which has been technically revised. ISO 2012 All rights reserved vCopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN ISO 12696:2012ISO 12696:2012(E)IntroductionT

32、his International Standard applies to cathodic protection of steel in concrete, with the concrete atmospherically exposed, buried or immersed.Because the criteria of protection for steel in buried or immersed concrete are those applicable to cathodic protection of steel in atmospherically exposed co

33、ncrete, this revision of EN 12696:2000 incorporates cathodic protection of steel in buried and immersed concrete. The provision of cathodic protection current can often be more economically provided to steel in buried and immersed concrete by using buried or immersed anode systems detailed in Intern

34、ational Standards for buried and immersed steel structures, rather than the anode systems that are suitable for applications to steel in atmospherically exposed concrete. Therefore reference is made to other International Standards in this respect whilst the cathodic protection performance criteria

35、for steel in concrete are defined in this International Standard for all exposures.There are other electrochemical treatments intended to provide corrosion control for steel in concrete. These techniques include re-alkalisation and chloride extraction and are not incorporated into this International

36、 Standard. CEN/TS 14038-1:20047and CEN/TS 14038-2:201127 have been published.Cathodic protection of steel in concrete is a technique that has been demonstrated to be successful in appropriate applications in providing cost effective long-term corrosion control for steel in concrete. It is a techniqu

37、e that requires specific design calculations and definition of installation procedures in order to be successfully implemented. This International Standard does not represent a design code for cathodic protection of steel in concrete but represents a performance standard for which it is anticipated,

38、 in order to comply with this standard, a detailed design and specification for materials, installation, commissioning and operation will be prepared.vi ISO 2012 All rights reservedCopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or

39、 networking permitted without license from IHS-,-,-BS EN ISO 12696:2012Cathodic protection of steel in concrete1 ScopeThis International Standard specifies performance requirements for cathodic protection of steel in cement-based concrete, in both new and existing structures. It covers building and

40、civil engineering structures, including normal reinforcement and prestressed reinforcement embedded in the concrete. It is applicable to uncoated steel reinforcement and to organic-coated steel reinforcement.This International Standard applies to steel embedded in atmospherically exposed, buried, im

41、mersed and tidal elements of buildings or structures.NOTE 1 Annex A gives guidance on the principles of cathodic protection and its application to steel in concrete.NOTE 2 This International Standard, whilst not specifically intended to address cathodic protection of steel in any electrolyte except

42、concrete, may be applied to cathodic protection of steel in other cementitious materials such as are found, for example, in early 20th century steel-framed masonry, brick and terracotta clad buildings. In such applications, additional considerations specific to these structures are required in respe

43、ct of design, materials and installation of cathodic protection; however, the requirements of this International Standard may be applied to these systems.2 Normative referencesThe following referenced documents are indispensable for the application of this document. For dated references, only the ed

44、ition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 8044, Corrosion of metals and alloys Basic terms and definitionsISO 13174, Cathodic protection for harbour installationsEN 1504 (all parts), Products and systems for the

45、protection and repair of concrete structures Definitions, requirements, quality control and evaluation of conformityEN 12954, Cathodic protection of buried or immersed metallic structures General principles and application for pipelinesEN 14629, Products and systems for the protection and repair of

46、concrete structures Test methods Determination of chloride content in hardened concreteEN 14630, Products and systems for the protection and repair of concrete structures Test methods Determination of carbonation depth in hardened concrete by the phenolphthalein methodEN 15257, Cathodic protection C

47、ompetence levels and certification of cathodic protection personnelIEC 60502-1, Power cables with extruded insulation and their accessories for rated voltages from 1 kV (Um= 1,2 kV) to 30 kV (Um= 36 kV) Part 1: Cables for rated voltages of 1 kV (Um= 1,2 kV) and 3 kV (Um= 3,6 kV) IEC 60529, Degrees o

48、f protection provided by enclosures (IP Code)IEC 61140, Protection against electric shock Common aspects for installation and equipmentIEC 61558-1, Safety of power transformers, power supplies, reactors and similar products Part 1: General requirements and testsIEC 61558-2-1, Safety of power transformers, power supplies, reactors and similar products Part 2-1: Particular requirements and tests for separating transformers and power supplies incorporating separating transformers for general applicationsINTERNATIONAL STANDARD ISO 12696:2012(E) ISO 2012 All rights reserved 1Copyright European Com