DIN EN 16222-2012 Cathodic protection of ship hulls German version EN 16222 2012《船体阴极保护 德文版本EN 16222-2012》.pdf
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1、December 2012 Translation by DIN-Sprachendienst.English price group 19No 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).I
2、CS 77.060; 47.020.01!$0“1931393www.din.deDDIN EN 16222Cathodic protection of ship hulls;English version EN 16222:2012,English translation of DIN EN 16222:2012-12Kathodischer Korrosionsschutz von Schiffen;Englische Fassung EN 16222:2012,Englische bersetzung von DIN EN 16222:2012-12Protection cathodiq
3、ue des coques de bateaux;Version anglaise EN 16222:2012,Traduction anglaise de DIN EN 16222:2012-12www.beuth.deDocument comprises 48 pagesIn case of doubt, the German-language original shall be considered authoritative.12.12 DIN EN 16222:2012-12 2 A comma is used as the decimal marker. National fore
4、word This standard has been prepared by Technical Committee CEN/TC 219/WG 3 “Cathodic protection of steel structures in seawater” (Secretariat: BSI, United Kingdom). The responsible German body involved in its preparation was the Normenstelle Schiffs- und Meerestechnik (Shipbuilding and Marine Techn
5、ology Standards Committee), Working Committee NA 132-04-04 AA Korrosion. EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 16222 October 2012 ICS 47.020.01; 77.060 English Version Cathodic protection of ship hulls Protection cathodique des coques de bateaux Kathodischer Korrosionsschutz von Schif
6、fen This European Standard was approved by CEN on 25 August 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
7、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 of
8、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 Mace
9、donia, 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 EUR
10、OPISCHES 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 16222:2012: EEN 16222:2012 (E) 2 Contents Page Foreword 4Introduction .51 Scope 61.1 General 61.2
11、 Structures .61.3 Materials .61.4 Environment .62 Normative references 63 Terms and definitions .74 Competence of personnel .75 Design basis .85.1 General 85.2 Cathodic protection criteria 85.3 Design process 95.4 Design parameters 105.5 Current demand 105.6 Cathodic protection systems 135.7 Electri
12、cal continuity 145.8 Fitting out period 146 Impressed current system . 146.1 Objectives 146.2 Design considerations . 146.3 Equipment considerations . 157 Galvanic anodes system 197.1 Objectives 197.2 Design considerations . 197.3 Anode materials 197.4 Factors determining the anode current output an
13、d operating life 207.5 Location of anodes . 208 Commissioning, Operation and Maintenance . 218.1 Objectives 218.2 Measurement Procedures 218.3 Commissioning: Galvanic Systems 218.4 Commissioning: Impressed Current Systems . 228.5 Operation and maintenance 238.6 Dry-docking period . 249 The protectio
14、n of ships hulls during fitting out and when laid up . 259.1 Fitting out period 259.2 Lay up period 2510 Documentation 2510.1 Objectives 2510.2 Impressed current system . 2610.3 Galvanic anode systems 26Annex A (informative) Impressed current system for hulls of ships based on two cathodic protectio
15、n zones . 28DIN EN 16222:2012-12 EN 16222:2012 (E) 3 Annex B (informative) Guidance on design current values for cathodic protection of hulls of ships 29B.1 Typical design current densities for the cathodic protection of bare steel (Jb) 29B.2 Coating breakdown of conventional paint systems (fc) . 29
16、B.3 Typical current densities for global approach of the cathodic protection of coated ships (Jg) . 30Annex C (informative) Anode resistance, current and life duration formulae 31C.1 Anode resistance formulae 31C.2 Calculation of the anode resistance at the end of life . 32C.3 Electrolyte resistivit
17、y 33C.4 Galvanic anode current output 35C.5 Anode life . 35C.6 Minimum Net Weight Requirement 35Annex D (informative) Electrical bonding systems . 37Annex E (informative) Monitoring of electrical bonding of a ships propeller 39Annex F (informative) Impressed current system for ships based on an aft
18、(stern) system only . 40Annex G (informative) Location of galvanic anodes in the stern area 41Annex H (informative) Electrochemical characteristics of impressed current anodes . 42Annex I (informative) Cofferdam arrangements . 43Annex J (informative) Cathodic protection of a moored ship using suspen
19、ded galvanic anodes 45Bibliography 46DIN EN 16222:2012-12 EN 16222:2012 (E) 4 Foreword This document (EN 16222:2012) has been prepared by 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 stan
20、dard, either by publication of an identical text or by endorsement, at the latest by April 2013, and conflicting national standards shall be withdrawn at the latest by April 2013. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CE
21、N and/or CENELEC shall not be held responsible for identifying any or all such patent rights. 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,
22、 Czech Republic, Denmark, Estonia, Finland, Former 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 Ki
23、ngdom. DIN EN 16222:2012-12 EN 16222:2012 (E) 5 Introduction Cathodic protection is usually applied, mostly as a complement to protective coatings, to protect the external surfaces of ship hulls and immersed appurtenances from corrosion due to seawater. Cathodic protection works by supplying suffici
24、ent direct current to the immersed external surface of the structure in order to change the steel to electrolyte potential to values where corrosion is insignificant. The general principles of cathodic protection are detailed in EN 12473. DIN EN 16222:2012-12 EN 16222:2012 (E) 6 1 Scope 1.1 General
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