EN ISO 12696-2016 en Cathodic protection of steel in concrete《混凝土中钢的阴极保护》.pdf

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1、BS EN ISO 12696:2016Cathodic protection of steel inconcrete (ISO 12696:2016)BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN ISO 12696:2016 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO 12696:2016. It supersedes BS EN

2、ISO 12696:2012 which iswithdrawn.The UK participation in its preparation was entrusted to Technical 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

3、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 94154 2 ICS 77.060; 77.140.15; 91.080.40 Compliance with a British Standard cannot confer immunity from legal obligations.This Bri

4、tish Standard was published under the authority of the Standards Policy and Strategy Committee on 31 January 2017.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 12696 December 2016 ICS 77.140.15; 77.060 Supersedes EN

5、 ISO 12696:2012English Version Cathodic protection of steel in concrete (ISO 12696:2016)Protection cathodique de lacier dans le bton (ISO 12696:2016) Kathodischer Korrosionsschutz von Stahl in Beton (ISO 12696:2016) This European Standard was approved by CEN on 24 November 2016. CEN members are boun

6、d 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 national standards may be obtained on application to the CE

7、N-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 language and notified to the CEN-CENELEC Management Centre h

8、as 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, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, L

9、uxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey andUnited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Bru

10、ssels 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 12696:2016 EBS EN ISO 12696:2016EN ISO 12696:2016 (E) 3 European foreword This document (EN ISO 12696:2016) has been prepared by Technical Committee ISO/TC 156 “Corrosi

11、on of metals and alloys“ in collaboration with Technical Committee CEN/TC 219 “Cathodic protection” the secretariat of which is held by BSI. 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 June 20

12、17, and conflicting national standards shall be withdrawn at the latest by June 2017. 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.

13、This document supersedes EN ISO 12696:2012. According to the CEN-CENELEC Internal Regulations, the 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

14、 Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 12696:20

15、16 has been approved by CEN as EN ISO 12696:2016 without any modification. BS EN ISO 12696:2016ISO 12696:2016(E)Foreword 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

16、repair 35.1 General . 35.2 Records 45.3 Visual inspection and delamination 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 resist

17、ivity . 55.10 Repair 55.10.1 General 55.10.2 Concrete removal. 55.10.3 Reinforcement preparation 65.10.4 Concrete reinstatement . 65.11 Cementitious overlay . 65.12 New structures 76 Cathodic protection system components 76.1 General . 76.2 Anode systems . 86.2.1 Conductive coating anode systems 86.

18、2.2 Activated titanium anode systems 96.2.3 Titania ceramic anodes .116.2.4 Conductive cementitious anodes 116.2.5 Embedded galvanic anodes . 116.2.6 Surface-mounted galvanic anodes .116.2.7 Buried and immersed anodes 116.3 Monitoring sensors 136.3.1 General. 136.3.2 Portable reference electrodes .

19、146.3.3 Other sensors . 146.4 Monitoring instrumentation 156.4.1 General. 156.4.2 Digital meters 156.4.3 Data loggers 156.5 Data management system 166.6 Direct current cables . 176.7 Junction boxes . 186.8 Power supplies . 186.9 Transformer-rectifiers . 187 Installation procedures 207.1 Electrical c

20、ontinuity 207.2 Performance monitoring system 20 ISO 2016 All rights reserved iiiContents PageBS EN ISO 12696:2016ISO 12696:2016(E)7.3 Connections to steel in concrete . 217.4 Concrete repairs associated with the cathodic protection components 217.5 Surface preparation for anode installation 217.6 A

21、node installation . 227.7 Connections to the anode system 227.8 Anode overlay, surface sealant or decorative coating application 227.9 Electrical installation 237.10 Testing during installation . 238 Commissioning 248.1 Visual inspection 248.2 Pre-energizing measurements . 248.3 Initial energizing o

22、f impressed current systems 258.4 Initial adjustment of impressed current systems 258.5 Initial performance assessment 258.6 Criteria of protection: Interpretation of performance assessment data 268.7 Adjustment of protection current for impressed current systems .289 System records and documentatio

23、n 289.1 Quality and test records . 289.2 Installation and commissioning report 289.3 Operation and maintenance manual . 2910 Operation and maintenance 2910.1 Intervals and procedures 2910.2 System review . 3010.3 System review report . 30Annex A (informative) Principles of cathodic protection and it

24、s application to steel in concrete .31Annex B (informative) Design process 37Annex C (informative) Notes on anode systems .41Bibliography .46iv ISO 2016 All rights reservedBS EN ISO 12696:2016ISO 12696:2016(E)ForewordISO (the International Organization for Standardization) is a worldwide federation

25、of 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. I

26、nternational 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.The procedures used to develop this document and those

27、intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see

28、 www.iso.org/directives).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. Details of any patent rights identified during the development of the docume

29、nt will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and ex

30、pressions related to conformity assessment, as well as information about ISOs adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html.The committee responsible for this document is ISO/TC 156, Corrosion

31、of metals and alloys.This second edition cancels and replaces the first edition (ISO 12696:2012), of which it constitutes a minor revision with the following changes: figures for MnO2, NaOH (0,5 M) in Table A.1 have been updated; general editorial corrections throughout the document. ISO 2016 All ri

32、ghts reserved vBS EN ISO 12696:2016ISO 12696:2016(E)IntroductionThis document 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 cathodi

33、c protection of steel in atmospherically exposed concrete, 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

34、buried or immersed anode systems detailed in International 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

35、while the cathodic protection performance criteria for steel in concrete are defined in this document for all exposures.There are other electrochemical treatments intended to provide corrosion control for steel in concrete. These techniques include re-alkalization and chloride extraction and are not

36、 incorporated into this document. CEN/TS 14038-1:2004 and CEN/TS 14038-2:2011 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 concr

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

38、cipated, in order to comply with this document, a detailed design and specification for materials, installation, commissioning and operation will be prepared.vi ISO 2016 All rights reservedBS EN ISO 12696:2016Cathodic protection of steel in concrete1 ScopeThis document specifies performance requirem

39、ents for cathodic protection of steel in cement-based concrete, in both new and existing structures. It covers building and civil engineering structures, including normal reinforcement and prestressed reinforcement embedded in the concrete. It is applicable to uncoated steel reinforcement and to org

40、anic-coated steel reinforcement.This document applies to steel embedded in atmospherically exposed, buried, immersed 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 document, whi

41、le not specifically intended to address cathodic protection of steel in any electrolyte except concrete, can 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

42、such applications, additional considerations specific to these structures are required in respect of design, materials and installation of cathodic protection; however, the requirements of this document can be applied to these systems.2 Normative referencesThe following documents are referred to in

43、the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.EN 1504 (all parts), Products and systems

44、 for the protection and repair of concrete structures Definitions, requirements, quality control and evaluation of conformityEN 14629, Products and systems for the protection and repair of concrete structures Test methods Determination of chloride content in hardened concreteEN 14630, Products and s

45、ystems for the protection and repair of concrete structures Test methods Determination of carbonation depth in hardened concrete by the phenolphthalein methodIEC 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

46、 1: Cables for rated voltages of 1 kV (Um = 1,2 kV) and 3 kV (Um = 3,6 kV)IEC 60529, Degrees of 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

47、 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 applications

48、IEC 61558-2-2, Safety of power transformers, power supplies, reactors and similar products Part 2-2: Particular requirements and tests for control transformers and power supplies incorporating control transformersINTERNATIONAL STANDARD ISO 12696:2016(E) ISO 2016 All rights reserved 1BS EN ISO 12696:

49、2016ISO 12696:2016(E)IEC 61558-2-4, Safety of transformers, reactors, power supply units and similar products for supply voltages up to 1 100 V Part 2-4: Particular requirements and tests for isolating transformers and power supply units incorporating isolating transformersIEC 61558-2-13, Safety of transformers, reactors, power supply units and similar products for supply voltages up to 1 100 V Part 2-13: Particular requirements and tests for auto transformers and power supply units incorporating auto transformersIEC 61558-2-16, Safety