1、May 2013Translation by DIN-Sprachendienst.English price group 18No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 77.
2、060; 93.140!%#o“2008876www.din.deDDIN EN ISO 13174Cathodic protection of harbour installations (ISO 13174:2012);English version EN ISO 13174:2012,English translation of DIN EN ISO 13174:2013-05Kathodischer Korrosionsschutz fr Hafenbauten (ISO 13174:2012);Englische Fassung EN ISO 13174:2012,Englische
3、 bersetzung von DIN EN ISO 13174:2013-05Protection cathodique des installations portuaires (ISO 13174:2012);Version anglaise EN ISO 13174:2012,Traduction anglaise de DIN EN ISO 13174:2013-05SupersedesDIN EN 13174:2001-07www.beuth.deIn case of doubt, the German-language original shall be considered a
4、uthoritative.Document comprises 40 pages04.13 DIN EN ISO 13174:2013-05 2 A comma is used as the decimal marker. National foreword This document (EN ISO 13174:2012) has been prepared by Technical Committee CEN/TC 219 “Cathodic protection”, Working Group WG 3 “Cathodic protection of steel structures i
5、n seawater” (Secretariat: BSI, United Kingdom) in collaboration with Technical Committee ISO/TC 156 “Corrosion of metals and alloys” (Secretariat: SAC, China), Working Group WG 10 “Cathodic protection of buried and immersed metallic structures”. The responsible German body involved in its preparatio
6、n was the Normenstelle Schiffs- und Meerestechnik (Shipbuilding and Marine Technology Standards Committee), Working Committee NA 132-04-04 AA Korro-sionsschutz. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 9001 DIN EN ISO 9001 ISO 12
7、696 DIN EN ISO 12696 ISO 12944-1 DIN EN ISO 12944-1 ISO 12944-2 DIN EN ISO 12944-2 Amendments This standard differs from DIN EN 13174:2001-07 as follows: a) Clause 1 “Scope” has been extended; b) Figure 1 has been revised; c) requirements for the personnel relating to the design, installation, commi
8、ssioning and measurements have been included; d) Subclauses 5.6 “Electric continuity” and 5.7 “Interactions” have been revised; e) specifications relating to impressed current systems and galvanic anodes have been rendered more precise; f) Clause 8 “Commissioning, operation and maintenance” has been
9、 added; g) Annex B “Anode resistance, current and life determination” has been extended to include B.2 “Calculation of the anode resistance at the end of life”, B.4 “Galvanic anode current output” and B.5 “Anode life”; h) Annex D “Guidance related to the design process” has been added; i) the standa
10、rd has been editorially revised. Previous editions DIN EN 13174: 2001-07 DIN EN ISO 13174:2013-05 3 National Annex NA (informative) Bibliography DIN EN ISO 9001, Quality management systems Requirements DIN EN ISO 12696, Cathodic protection of steel in concrete DIN EN ISO 12944-1, Paints and varnishe
11、s Corrosion protection of steel structures by protective paint systems Part 1: General introduction DIN EN ISO 12944-2, Paints and varnishes Corrosion protection of steel structures by protective paint systems Part 2: Classification of environments DIN EN ISO 13174:2013-05 4 This page is intentional
12、ly blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 13174 December 2012 ICS 77.060; 47.020.99 Supersedes EN 13174:2001English Version Cathodic protection of harbour installations (ISO 13174:2012) Protection cathodique des installations portuaires Kathodischer Korrosionsschutz fr Hafenb
13、auten This European Standard was approved by CEN on 18 December 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 bibliographi
14、cal 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 the responsibility
15、 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 Yugoslav Republic of
16、Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, 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
17、 EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 13174:2012: E(ISO 13174:2012) (ISO 13174:2012) Contents Page Foreword . 3 Introduction .
18、4 1 Scope . 5 1.1 General 5 1.2 Structures . 5 1.3 Materials 5 1.4 Environment . 5 1.5 Safety and environment protection 6 2 Normative references. 6 3 Terms and definitions 6 4 Competence of personnel . 8 5 Design basis . 9 5.1 Objectives . 9 5.2 Cathodic protection criteria 9 5.3 Design parameters
19、. 10 5.4 Electrical current demand . 11 5.5 Cathodic protection systems 13 5.6 Electrical continuity . 15 5.7 Interactions . 15 6 Impressed current systems 16 6.1 Objectives . 16 6.2 Design considerations . 16 6.3 Equipment considerations 17 7 Galvanic anode systems . 20 7.1 Objectives . 20 7.2 Desi
20、gn . 20 7.3 Materials 20 7.4 Location of anodes 21 7.5 Installation 21 8 Commissioning, operation and maintenance . 22 8.1 Objectives . 22 8.2 Commissioning: galvanic systems 22 8.3 Commissioning: Impressed current systems . 22 8.4 Operation and maintenance 23 9 Documentation . 24 9.1 Objectives . 2
21、4 9.2 Impressed current system 24 9.3 Galvanic anodes system . 25 Annex A (informative) Guidance for current requirements for cathodic protection of harbour installations 26 Annex B (informative) Anode resistance, current and life determination 28 Annex C (informative) Typical electrochemical charac
22、teristics of impressed current anodes . 33 Annex D (informative) Guidance related to the design process . 34 Bibliography 36 2DIN EN ISO 13174:2013-05 EN ISO 13174:2012 (E) Foreword This document (EN ISO 13174:2012) has been prepared by Technical Committee CEN/TC 219 “Cathodic protection , the secre
23、tariat of which is held by BSI, in collaboration with Technical Committee ISO/TC 156 Corrosion of metals and 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 June 2013, and conflicting nat
24、ional standards shall be withdrawn at the latest by June 2013. 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. This document supersede
25、s EN 13174:2001. According to the CEN/CENELEC Internal Regulations, the national standards organisations 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 Maced
26、onia, 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. “ ”3DIN EN ISO 13174:2013-05 EN ISO 13174:2012 (E) IntroductionCathodi
27、c protection is applied, sometimes in conjunction with protective coatings, to protect the external surfaces of steel harbour installations and appurtenances from corrosion due to seawater, brackish water, saline mud or soil fill.Cathodic protection works by supplying sufficient direct current to th
28、e immersed external surface of the structure to change the steel to electrolyte potential to values where corrosion is insignificant.The general principles of cathodic protection in seawater are detailed in ISO 12473. The general principles of cathodic protection in soils are detailed in EN 12954.4D
29、IN EN ISO 13174:2013-05 EN ISO 13174:2012 (E) 1 Scope1.1 GeneralThis International Standard defines the means to be used to ensure that cathodic protection is efficiently applied to the immersed and driven/buried metallic external surfaces of steel port, harbour, coastal and flood defence installati
30、ons and appurtenances in seawater and saline mud to provide protection from corrosion.1.2 StructuresThis International Standard specifies cathodic protection of fixed and floating port and harbour structures. This includes piers, jetties, dolphins (mooring and berthing), sheet or tubular piling, pon
31、toons, buoys, floating docks, lock and sluice gates. It also specifies cathodic protection of the submerged areas of appurtenances, such as chains attached to the structure, when these are not electrically isolated from the structure.This International Standard is to be used in respect of cathodic p
32、rotection systems where the anodes are exposed to water or saline mud. For buried areas, typically in soil or sand filled areas behind piled walls or within filled caissons, which may be significantly affected by corrosion, specific cathodic protection design and operation requirements are defined i
33、n EN 12954, the anodes being exposed to soils.This International Standard does not cover the cathodic protection of fixed or floating offshore structures (including offshore loading buoys), submarine pipelines or ships.This International Standard does not include the internal protection of surfaces
34、of any components such as ballast tanks, internals of floating structures flooded compartments of lock and sluice gates or the internals of tubular steel piles.1.3 MaterialsThis International Standard covers the cathodic protection of structures fabricated principally from bare or coated carbon and
35、carbon manganese steels.As some parts of the structure may be made of metallic materials other than carbon steels, the cathodic protection system should be designed to ensure that there is a complete control over any galvanic coupling and minimize risks due to hydrogen embrittlement or hydrogen-indu
36、ced cracking (see ISO 12473).This International Standard does not address steel reinforced concrete structures (see ISO 12696).1.4 EnvironmentThis International Standard is applicable to the whole submerged zone in seawater, brackish waters and saline mud and related buried areas which can normally
37、be found in port, harbour, coastal and flood defence installations wherever these structures are fixed or floating.For surfaces which are alternately immersed and exposed to the atmosphere, the cathodic protection is only effective when the immersion time is long enough for the steel to become polar
38、ized. Typically, effective cathodic protection is achieved for all surfaces below mid tide.For structures such as sheet steel and tubular steel piles that are driven into the sea bed or those that are partially buried or covered in mud, this International Standard is also applicable to the surfaces
39、buried, driven and exposed to mud which are intended to receive cathodic protection along with surfaces immersed in water.5DIN EN ISO 13174:2013-05 EN ISO 13174:2012 (E) Cathodic protection may also be applied to the rear faces of sheet steel piled walls and the internal surfaces of filled caissons.
40、 Cathodic protection of such surfaces is specified by EN 12954.This International Standard is applicable to those structures which are, or may be in the future, affected by “Accelerated Low Water Corrosion” (ALWC) and other more general forms of microbial corrosion (MIC) or other forms of so-called
41、“concentrated corrosion” associated with galvanic couples, differential aeration and other local corrosion influencing parametersNOTE Information is available in BS 6349-1:2000, Clause 59 and CIRIA C634 (see Bibliography)1.5 Safety and environment protectionThis International Standard does not addre
42、ss safety and environmental protection aspects associated with cathodic protection to which national or international regulations apply.2 Normative referencesThe following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applie
43、s. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 12473, General principles of cathodic protection in sea waterEN 12496, Galvanic anodes for cathodic protection in seawater and saline mudISO 12696, Cathodic protection of steel in concrete
44、EN 12954, Cathodic protection of buried or immersed metallic structures General principles and application for pipelinesEN 13509, Cathodic protection measurement techniquesEN 50162, Protection against corrosion by stray current from direct current systems3 Terms and definitionsFor the purposes of th
45、is document, the terms and definitions in ISO 12473 and the following apply.3.1accelerated low water corrosionALWClocalised corrosion generally found on the sea side at or just below the LAT level of structures, but can be present at all immersed levelsNote 1 to entry: This phenomenon is associated
46、with microbiologically influenced corrosion (MIC) and generally quiescent conditions. (See CIRIA C634.) Corrosion rates, without cathodic protection, can be as high as 2 mm/side/year and the corrosion is typically localized as large, open pitting3.2atmospheric zonezone located above the splash zone,
47、 i.e. above the level reached by the normal swell, whether the structure is moving or not3.3buried zonezone located under the mud line or in soil or fill3.4cathodic protection zonethat part of the structure which can be considered independently with respect to cathodic protection design6DIN EN ISO 1
48、3174:2013-05 EN ISO 13174:2012 (E) 3.5coating breakdown factorFratio of cathodic current density for a coated metallic material to the cathodic current density of the bare material3.6driving voltagedifference between the structure/electrolyte potential and the anode/electrolyte potential when the ca
49、thodic protection is operating3.7HATlevel of highest astronomical tide3.8immersed zonezone located above the mud line and below the extended tidal zone or the water line at a draught corresponding to the normal working conditions3.9LATlevel of lowest astronomical tide3.10MTLmean tide level (also known as MSL mean sea level or MWL mean water level)3.11microbial corrosioncorrosion associated with the action of micro-organisms present in the corrosion systemNote 1 to entry: Also cal
